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Magnetic Measurement and Control Catalog

1. m3 mol H m mol Pme deseen Volume energy density 101 energy product Gaussian units cgs emu are the same for magnetic properties The defining relation is 4nM b Multiply a number in Gaussian units by to convert it to SI e g 1 G x 10 10 SI Syst me International d Unit s has been adopted by the National Bureau of Standards Where two conversion factors are given the upper is recognized under or consistent with SI and is based on the definition u H M where u 4n x 10 H m The lower one is not recognized under SI is based on the definition B J where the symbol I is often used in place of J 1 gauss 10 gamma Both oersted and gauss are expressed as cm g st in terms of base units A m was often expressed as ampere turn per meter when used for magnetic field strength Magnetic moment per unit volume The designation emu is not a unit Recognized under SI even though based on the definition B J See footnote H 7 Mug 1 all in SI 15 equal to Gaussian p k B Hand uM H have SI units J m H and B H 4n have Gaussian units cm mol emu mol Molar susceptibility Xma Kma Q cS SOQ R B Goldfarb and F R Fickett U S Department of Commerce National Bureau of Standards B
2. c x x ce AC frequency range 10 Hz to 400 Hz AC RMS accuracy 2 of reading 50 Hz to 60 Hz AC RMS frequency response 0 to 3 5 of reading 10 Hz to 400 Hz All AC RMS specifications for sinusoidal input gt 1 of range peak accuracy 5 typical AC peak speed 5 ms for single peak Front Panel Display type 4 line x 20 character vacuum fluorescent Display resolution Up to 5 digits Display update rate 4 rdg s with vector off 3 rdg s with vector on Displays units Gauss G tesla T Units multipliers Annunciators RMS AC input signal DC DC input signal max hold value 5 relative reading remote operation gt alarm on Keypad 25 full travel keys Front panel features Display prompts front panel lockout brightness control www lakeshore com Lake Shore Cryotronics Inc Interfaces RS 232C capabilities Baud 300 1200 9600 Connector RJ 11 configuration Update rate Up to 14 rdg s at 9600 baud IEEE 488 capabilities Complies with IEEE 488 2 SH1 AH1 SR1 RL1 PPO DC1 DTO CO E1 Update rate 18 rdg s with vector off 14 rdg s with vector on Alarm Settings High and low setpoint inside outside audible Actuators Display annunciator beeper Monitor analog output 3 Configuration Real time analog voltage output Scale 3 V full scale on selected range Frequency response DC to 400 Hz Accuracy Probe dependent Minimum load resistance 1 short ci
3. ET 0 76 mm diameter 0 36 0 030 Active area Stem Frequency Usable full Corrected Operating Temp Temp material range scale ranges accuracy temp range coefficient coefficient rdg max zero max calibration MMT 6J04 VH 4 in 0 061 in 0 180 in Aluminum DC and 10 Hz 0 125 in max 0 005 in to 100 Hz 30 G 300 G 0 25 T 0 040 in dia approx MNT 4E04 VH 4 in 0 045 in 0 150 in x 0 125 in max z 0 005 in MMT 6J04 VG 4 in 0 061 in 0 180in 0 125 in max 0 005 in MNT 4E04 VG 4 in 0 045 in 0 150 in 0 125 in max 0 005 in Rigid glass DC and 10 Hz epoxy to 400 Hz mal 300 G 3 kG 0 15 Rigid glass DC and10Hz 30KG to 30 kG 0 13 8 20 epoxy to 400 Hz 0 005 C Flexible 64 2 5 76 13 3 mm 3 0 5 0 125 in 2 6 5 9 53 mm 3 18 mm diameter max 2 gu in 0 375 in 1 robes al i M x 9 1 0 76 mm diameter 0 36 0 030 in T w Active area Stem material Frequency Usable full Corrected Operating Temp Temp range scale ranges accuracy temp range coefficient coefficient rdg max zero max calibration MFT 3E03 VH 30 G 300 G 0 25 0 09 G C 0 04 C 0 135in 0 025in 0 125in 0 040 india Flexible plastic DC and 10 Hz 3 kG 30 kG to 30 kG 0 C to 75 MFT 3E03 VG max max 0 005 approx tubing to 400 Hz 300 G 3 kG 0 15 0 13
4. 0 3 0 18 C approx 0 15 C approx 0 18 C approx fax 614 818 1600 poly nylon insulation poly nylon insulation poly nylon insulation poly nylon insulation Ic 100 mA Ic 100 mA Room temperature 30 kG data supplied e mail info lakeshore com Magnetic Field Sensors Transverse Hall Generators HGT 1010 HGT 1020 2 1 65 2 nimi 3 18 mm 0 50 ir 254 mm 10 in min 0 065 in 0 50 ir 0 125 active area 3 30 mm X 2 16 mt CIO MEN gt gt B B 0 51 mm 0 020 in max over Hall plate 0 51 mm 0 020 in 0 71 mm 0 028 over leads max over Hall plate 0 64 mm 0 025 over leads HGT 1070 HGT 2101 4 2 08 0 08 mm 5 21 mm a 190 5 12 7 0 082 0 003 0 205 7 5 20 5 in F 1 5 mm 0 060 in 0 9 mm 0 035 in 2 BLACK 34GA Teflon typ He VH 1 us Er 60 in B 998 ir al max in in j 4 MCBLUE RED Vy l Lead Colors ey 06 mm 0 024 in Red e TY Green I 1070 black M p 7 Blue V 0 012 in Clear V 1070 yellow typical HGT 1020 HGT 1050 HGT 1070 HGT 2010 Description General purpose Low field for transverse magnetic circuit flat mount applications 1 52 x 2 03 mm 0 06 0 08 in rectangle 40 max 250 mA 7 5 mV kG to 12 5 mV kG General p
5. 141 2 m 6 5 ft _T B 4 0 125 0 187 dia 0 005 Yes 0 13 G C 0 005 C c ojo oO O1 mua Lia 0 76 mm diameter 0 36 0 030 L in T in W in A in Active Stem Frequency Usable full scale Corrected Operating Temp Temp coefficient Contains area material range ranges accuracy temp coefficient max calibration temp in rdg range max zero sensor 0 061 0 180 DC to HSE 0 20 420 125 max 0 005 Aluminum 3004 356 356 to 30 kG 0 09 G C 0 04 C 40495 0 045 0 150 Fiberglass DCto 350G 3 5kG 0 25 30 e max 0 005 0 1 50 0 040 20 kHz 35 kG to 35 kG 0 ep to 420425 0 061 0 180 0 050 ms DC to 0 10 5 0 n 019 max 0 005 mmm 400 Hz ide to 30 kG SME 0 13 6 0 005 4 0125 0 045 0 150 Fiberglass DC to 3 5 kG 35 kG 9 15 ud max 20 005 epoxy 800 Hz to 35 kG cable length 64 mm 2 5 in 9 1 0 76 mm diameter 0 36 0 030 in T am A Active Stem Frequency Usable full scale ranges Corrected accuracy Operating Temp Temp coefficient Contains in area in material range rdg temp coefficient max calibration temp range max zero sensor 76 13 3 mm 3 0 5 0 125 in gt 3 18 mm diameter max 9 53 mm n in 0 375 in B DC to
6. Auxiliary 1 0 Probe input Model 455 DSP Gaussmeter AD amp ERVICEABLE SERVICING TO TRAINED SERVICE PERSONNEL Chi 4550008 PROBE INPUT The Model 455 includes one of the Lake Shore probes listed below specify probe model number when ordering Gaussmeter Hall Probes pecify Axial Probes HMNA 1904 VR HMMA 2502 VR HMNA 1904 VF HMMA 2502 VF Transverse Probes HMMT 6J04 VR HMNT 4E04 VR HMMT 6J04 VF HMNT 4E04 VF Flexible Transverse Probes HMFT 3E03 VR HMFT 3E03 VF See page 26 for details on properly selecting a probe and for a complete listing of available probe models m cable length T mm 2 5 in oO 1 4 i 2 4 9 1 0 76 mm diameter 0 36 0 030 in Active Stem Frequency Usable full scale Corrected Operating Temp Temp Contains area in material ranges accuracy temp coefficient coefficient temp rdg range C max zero max sensor calibration 0 005 Fiberglass DC to HSE 0 20 to 0 003 epox 20 kHz 3 5 G 35 G 30 kG and cel 3506 3 5kG 0 25 30 eee 10 kHz 35 kG to 35 kG 0 to 2 0 063 20008 oan az 4 0125 0 187 dia 0 005 2 approx Fiberglass 0 10 to 75 C K 0 003 PP 800 Hz HST 4 2 35 G 350 6 2 0 063 0 25 0 006 bon 35 kG 35 kG 2 cable length 64 mm 2 5 4
7. oim f LU 1 4 57 mm 0 180 HGCT 3020 Cryogenic transverse ceramic package 1 02 mm 0 040 in diameter circle HGCA 3020 Cryogenic axial phenolic package 0 76 mm 0 030 in diameter circle Description Active area approx Input resistance approx Output resistance approx Nominal control current lcn Maximum continuous current non heat sinked 25 C Magnetic sensitivity nominal control current Maximum linearity error Sensitivity vs field Zero field offset voltage Ic nominal control current Operating temperature range Mean temperature coefficient of magnetic sensitivity Mean temperature coefficient of offset nominal control current Mean temperature coefficient of resistance Leads Data Temperature Error Table The magnetic sensitivity generally increases as the temperature drops below 300 K However this trend reverses between 200 K and 100 K and the sensitivity decreases at an increasing rate as the temperature cools The sensitivity increase versus room temperature is as follows Change in Magnetic Sensitivity approximate Room Temp Ref 200 K 0 05 100 K 0 04 80 K 0 09 20 K 0 4 4 0 7 1 5 1 05 Ordering Information Part number Description HGCA 3020 HGCT 3020 Accessories available CAL 1X DATA All specifications are subject to change without notice www lakeshore com Cryogenic axial Hall gener
8. 178 mm 7 in continuously variable Up to 160 mm 6 3 in continuously variable Field strength See page 56 Consult Lake Shore Power supply ww 668 _5 page 48 for detailed specifications Output MEM BEEN Linear bipolar m Current output 35 A per coil 50 A per coil 67 5 A per coil Voltage 35 V nominal 50 V nominal 65 V nominal Power output 2 5 kW O 8 8 AC line input 200 208 220 230 380 400 415 VAC 208 220 380 400 VAC 208 and 400 VAC 3 phase 3 wire plus ground 3 phase 3 wire plus ground 3 phase 3 wire plus ground Gaussmeter _See page 3 for detailed specifications Resolution 5 3 4 digit 1 part out of 350 000 Ranges 8 ranges from 35 mG to 350 kG full scale Basic DC accuracy 0 05 Frequency ranges DC 1 Hz to 1 kHz and 50 Hz to 20 kHz Update rate Display 5 readings per 5 IEEE 488 30 rdg 5 HMMT 6J04 VF See page 31 for detailed specifications Length 5 1 3 2 mm 2 0 125 in 10 2 3 2 4 0 125 20 3 3 2 mm 8 0 125 Electromagnet 0 41 x 0 41 x 0 81 m 16 x 16 x 32 in 0 94 x 0 66 x 1 02 m 37 x 26 x 40 in 0 87 x 0 64 x 0 92 m 34 x 25 x 36 in 202 kg 445 Ib 614 kg 1350 Ib 1800 kg 3970 Ib Power supply 0 31 x 0 57 x 0 48 m 12 x 23 x 19 in 1 35 x 0 70 x 0 60 m 53 x 28 x 24 in 1 35 x 0 70 x 0 60 m 53 x 28 x 24 in 74 kg 163 Ib 250 kg 550 Ib 354 kg 780 Ib Gaussmeter Hall probe 89 x 318 x 216 mm 3 5 x
9. EH ALi DC GO ET COIL INPUT 4 PROBE INPUT D CAUTION POWER OFF MATE PROBE The Model 480 terminal block has connections for external reset With this feature a foot pedal or programmable logic controller PLC can be used to start a new measurement cycle The external reset is TTL compatible and a logic low will activate a reset The signal is internally pulled up to allow operation with a simple switch closure between pins 12 and 13 Display The Model 480 has a 2 line by 20 character vacuum fluorescent display During normal operation the display is used to report field readings and give results of other features such as max min or relative When setting instrument parameters the display gives the operator meaningful prompts and feedback to simplify operation The operator can also control display brightness Following are three examples of the various display configurations Normal Reading the default mode with the display of the live DC flux reading DC Positive and Negative Peak On the display shows both the positive and negative DC peak readings Alarm On the alarm gives an audible and visual indication of when the flux value 15 selectively outside or inside a user specified range www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Helmholtz and Search Coils Coils and probes wound by the user or from other manufacturers can be
10. Probe extension cable with EEPROM 30 m 100 ft calibrated Probe extension cable with EEPROM 30 m 100 ft uncalibrated Rack mount kit for gt gaussmeter in 483 mm 19 in rack Rack mount kit for two 72 gaussmeters in 483 mm 19 in rack 4065 HMCBL 6 HMCBL 20 HMPEC 10 HMPEC 10 U HMPEC 25 HMPEC 25 U HMPEC 50 HMPEC 50 U HMPEC 100 HMPEC 100 U RM 2 Calibration services CAL N7 DATA CAL 455 CERT CAL 455 DATA New instrument calibration for Model 455 475 with certificate and data Instrument recalibration with certificate Instrument recalibration with certificate and data All specifications are subject to change without notice Custom probes available consult Lake Shore 614 891 2244 fax 614 818 1600 e mail info lakeshore com Model 460 Gaussmeter Model 460 3 Channel Gaussmeter lt akeShore 460 3 Channel Gaussmeter an be operated with three individual probes a single 2 axis probe and one individual probe or a single 3 axis probe Displays each axis simultaneously Vector magnitude reading Resolution to 534 digits 1 part out of 300 000 Accuracy to 0 10 of reading Peak capture Analog voltage outputs IEEE 488 and serial interface Product Description The Model 460 3 channel Hall effect gaussmeter is the best choice for applications requiring 3 axis measurements or three simultaneous single axis measurements The Model 460 combines the
11. 0 25 x 0 5 x Model 460 450 and 421 Gamma Probes MLA 5006 HJ Gamma probe non metallic axial 0 25 0 5 x Model 460 2 Axis Probes MMY 1802 UH MMY 1808 UH MMY 1818 UH MMY 1836 UH 2 axis probe 2 in long 2 axis probe 8 in long 2 axis probe 18 in long 2 axis probe 36 in long Model 460 3 Axis Probes MMZ 2502 UH MMZ 2508 UH MMZ 2512 UH MMZ 2518 UH MMZ 2536 UH MMZ 2560 UH 3 axis probe 2 in long 3 axis probe 8 in long 3 axis probe 12 in long 3 axis probe 18 in long 3 axis probe 36 in long 3 axis probe 60 in long All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc Model 460 450 and 421 Transverse Probes MNT 4E02 VG MNT 4E04 VG MNT 4E02 VH MNT 4E04 VH MMT 6J02 VG MMT 6J04 VG MMT 6J08 VG MMT 6J18 VG MMT 6J02 VH MMT 6J04 VH MMT 6J08 VH MMT 6J18 VH Probe non metallic transverse 0 04 x 0 14 x 2 in Probe non metallic transverse 0 04 x 0 14 x 4 in Probe non metallic transverse 0 04 x 0 14 x 2 in Probe non metallic transverse 0 04 x 0 14 x 4 in Probe metal transverse 0 06 x 0 18 x 2 in Probe metal transverse 0 06 x 0 18 x 4 in Probe metal transverse 0 06 x 0 18 x 8 in Probe metal transverse 0 06 x 0 18 x 18 in Probe metal transverse 0 06 x 0 18 x 2 in Probe metal transverse 0 06 x 0 18 x 4 in Probe metal transverse 0 06 x 0 18 x 8 in Probe metal transverse 0 06 x 0 18 x 18 in Model 460 450 and 42
12. 3 Update rate Up to 4 rdg s on display up to 18 rdg s with IEEE 488 interface Measurement modes DC RMS Peak Probe compatibility Standard multi axis and custom probes Probe features Linearity Correction Temperature Correction Auto Probe Zero Measurement features Autorange Max Hold Relative Mode Filter Vector Magnitude Differential Reading Probe connector 15 pin D style DC Measurement Probe type Range 974 digits with filter 4 4 digits without filter HST Probe 300 kG 30 kG 3 kG 300 G HSE Probe 30 kG 3 kG 300 G 306 UHS Probe 306 3G 300 mG 0 001 kG 0 0001 kG 0 00001 kG 0 001 G 0 01 kG 0 001 kG 0 0001 kG 0 01 G 0 0001 kG 0 00001 kG 0 001 G 0 0001 G 0 001 kG 0 0001 kG 0 001 G C C 0 0001 G 0 00001 G 0 001 mG ee 3 DC accuracy 0 10 of reading 0 005 of range DC temperature coefficient 0 05 of reading 0 003 of range per C AC RMS and Peak Measurement AC display resolution 43 digits Probe type Range HST Probe 300 kG 30 kG 3 kG 300 G HSE Probe 30 kG 3 kG 300 G 306 UHS Probe 30 G 3G 300 mG RMS resolution Peak resolution 0 01 kG 0 001 kG 0 0001 kG 0 01 G 0 01 kG 0 001 kG 0 0001 kG 0 001 kG 0 0001 kG 0 01 G 0 001 G 0 001 kG 0 0001 kG 0 01 6 0 001 G 0 0001 G 0 01 mG 0 00 0 x
13. W in A in Frequency range at 25 C for Models 475 and 455 2 0 125 BEAD ETE 40 125 iod os Aluminum DC to 800 Hz HSE 8 0125 mex 0005 3 5 G 35 G w TEER Me 18 0 25 350 2 kG mE 2 012 0 045 0 150 Fiberglass DC to 20 kHz eM 0 125 max 0 005 9459 004048 Yes 2 0 125 0 050 approx HMMT 6J04 VF 4 x 0 125 0 061 0 180 Aluminum DC to 400 Hz Rema 80 125 max 0 005 HST 4 35 G 350 G 0 13 G C 0 005 18 0 25 3 5 KG 35 KG HMNT 4E02 VF 2 31 125 0 045 0 150 Fiberglass DC to 800 Hz Tee 40 125 max 0 005 epoxy for Models 460 450 and 421 MMT 6J02 VH 2 30 125 MMT 6J04 VH 420 125 0 061 0 180 Aluminum DC and 10 Hz MMT 6J08 VH 8 0125 max 0 005 to 100 Hz HSE 1 0 25 450 460 30 G 300 G 0 09 G C 0 015 C Yes MMT 6J18 VH 18 0 25 ake 30kG 190 6 421 0 04 MNT 4E02 VH 2 50125 0 045 0 150 Fiberglass DC and 10 Hz MNT 4E04 VH 4 0 125 max 0 005 0150 0 040 dia epoxy to 400 Hz 0 C to MMT 6J02 VG 2 0 125 0 050 approx 75 MMT 6J04 VG 4 0 125 0 061 0 180 Aluminum DC MMT 6J08 VG 8 0 125 max 20 005 0 13 G C 0 005 C MMT 6J18 VG 18 0 25 MNT 4E02 VG 250 125 0 045 0 150 Fiberglass DC and 10 Hz MNT 4E04 VG 4 0 125 max 0 005 epoxy to 400 Hz www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info
14. exhibit their full accuracy specifications when used without an extension cable Model 460 2 and 3 axis probes require 2 and 3 extension cables respectively Extension cables for Models 475 and 455 are field programmable but can be ordered factory calibrated Probe Extension Cables Probe Extension Cables for Model 460 450 for Model 475 and 455 Gaussmeters and 421 Gaussmeters Length HMPEC 10 3 m 10 ft calibrated MPEC 10 3 m 10 ft HMPEC 10 U 3 m 10 ft uncalibrated 7 6 m 25 ft HMPEC 25 7 6 m 25 ft calibrated MPEC 50 15 m 50 ft HMPEC 25 U 7 6 m 25 ft uncalibrated MPEC 100 30 m 100 ft HMPEC 50 15 m 50 ft calibrated HMPEC 50 U 15 m 50 ft uncalibrated HMPEC 100 30 m 100 ft calibrated HMPEC 100 U 30m 100 ft uncalibrated Hall Probe Stands These moveable probe stands consist of a 30 mm 1 2 in square post mounted on 180 mm x 130 mm 22 5 mm 7 1 x 5 1 x 0 9 in thick base plate A probe holder is integrated into the stand The holder can be moved up or down and fixed at any angle and location along the post Two standard models are available Consult Lake Shore for other post heights Reterence Magnets High quality reference magnets are available in transverse flat and axial round configurations also see Helmholtz coil low field references on page 45 46 9 mm dia 50 3 mm 1 845 2 1 98 0 0 7 EN 8 1 mm 0 32 dia working space N 2 Transverse 1
15. metal transverse 0 06 x 0 18 x 8 in Probe metal transverse 0 06 x 0 18 x 18 in Probe metal transverse 0 06 x 0 18 x 2 Probe metal transverse 0 06 x 0 18 x 4 in Probe metal transverse 0 06 x 0 18 x 8 in Probe metal transverse 0 06 x 0 18 x 18 in Model 475 and 455 Flexible Transverse Probes HMFT 3E03 VF HMFT 3E03 VR HMFT 4F15 VF HMFT 4F15 VR HMFT 4F15 VR HF HMFT 2903 VH HMFT 2903 VJ Probe flexible transverse 0 03 x 0 14 x 3in Probe flexible transverse 0 03 x 0 14 x 3in Probe flexible transverse 0 04 x 0 15 x 15 in Probe flexible transverse 0 05 x 0 15 x 15 in Probe flexible transverse 0 05 x 0 15 x 15 in Probe flexible transverse 0 02 x 0 09 x Probe flexible transverse 0 02 x 0 09 x in Model 475 and 455 Cryogenic Transverse Probes HMCT 3160 WN Probe cryogenic transverse 0 25 dia x 60 in Model 475 and 455 Tangential Probes HMNTAN DQ02 TH Probe tangential 0 125 x 0 38 x 1 5 in Model 475 and 455 Brass Stem Probes HMMTB 6J02 VF HMMTB 6J04 VF HMMTB 6J08 VF HMMTB 6J02 VR HMMTB 6J04 VR HMMTB 6J08 VR Ordering Information Gamma 2 and 3 Axis Probes Probe brass stem 0 06 x 0 22 x 2 Probe brass stem 0 06 x 0 22 x 4 in Probe brass stem 0 06 x 0 22 x 8 in Probe brass stem 0 06 x 0 22 x 2 Probe brass stem 0 06 x 0 22 x 4 in Probe brass stem 0 06 x 0 22 x 8 in Model 475 and 455 Gamma Probes HMLA 5006 HJ Gamma probe non metallic axial
16. uncalibrated extension cables 0 02 of field reading error and 1 C temperature reading error 475 475 DSP gaussmeter with standard probe choice specify selected probe number for HWXX XXXX XX see list on page 7 Specify line power option VAC 100 VAC 120 VAC 220 VAC 240 VAC 120 ALL Accessories included 106 253 0 mating connector 106 264 mating connector shell 4060 Zero gauss chamber MAN 475 Model 475 user manual Accessories available 100 VAC configured includes U S power cord 120 VAC configured includes U S power cord 220 VAC configured includes universal Europe power cord 240 VAC configured includes universal Europe power cord 120 VAC configured includes U S and universal Europe power cords and all fuses 4005 1 m 3 3 ft long IEEE 488 GPIB computer interface cable assembly includes extender required for simultaneous use of IEEE cable and auxiliary 1 0 connector 4065 Large zero gauss chamber for gamma probe HMCBL 6 HMCBL 20 HMPEC 10 HMPEC 10 U HMPEC 25 HMPEC 25 U HMPEC 50 HMPEC 50 U HMPEC 100 HMPEC 100 U User programmable cable with EEPROM 1 8 m 6 ft User programmable cable with EEPROM 6 1 m 20 ft Probe extension cable with EEPROM 3 m 10 ft calibrated Probe extension cable with EEPROM 3 m 10 ft uncalibrated Probe extension cable with EEPROM 7 6 m 25 ft calibrated Probe extension cable with EEPROM Probe extension cable
17. 043G C 0 01 C TTT MOAI 2 0125 Mm 356 356 TEM 4025 0 080dia 0 005 0010 DC e 80 125 225005 40125 0 187 dia 0 005 2 75 TSCM 5 0125 ad SPEM TO GRAN 2 0 063 0 20 to HMMA 1808 VR 8 0125 0 180 dia 0 002 356 35G 30 kG TTT GEER 15 025 0 004 0 015 ucl 0 09 G C 0 015 36 025 0 005 10 kHz a 0 25 30 20 063 2 4 sang 0356 80125 0 20 dla 0 2 18 05 0 25 dia 0 005 9355 Sum TNT GCA aa 2 0125 0005 0090 Fiberglass Bo 4 0125 0 187 dia 0 005 approx 52 0 125 ER TTT GRAY ae 2 0 063 HST 4 272 MIREA 5 0125 0 180dia 0 002 35 3506 20 Ka and MIRESI 15 025 0 004 356 356 50 086 55 025 DC to 0 13G C 0 005 0 220063 0 015 400 Hz MM ae 640 125 225 18 0 006 Aluminum 0 180 dia 0 002 HST 3 a 5 0 004 35 350 1 to WAKA 36 0 25 0 25 dia 0 006 3 5 r S kG 100 6 for Models 460 450 and 421 MMA 0602 TH 2 40 125 ea 0604 450125 0 060 dia 0 001 0 005 1 0 25 to 0608 8 0125 0003 0008 HST 2 10 kG MMA 0618 TH 18 025 m is Aluminum 300 G 3 KG 043G C 0 01 No MMA 0802 UH 2 0 125 30 kG 0804 4 40125 0 080 dia 0005 0010 DC n MMA 0808 UH 8 0125 29 MNA 1902 VH 2 0 125 MNA 1904 VH 40125 0 187 dia 0 005 2 79 io MNA 1908 VH
18. 12 5 x 8 5 in 3 kg 6 6 b Ordering Information Customer specifies single phase voltage 3 phase voltage and pole cap diameter Part number Description FC EM4 HVA Field controlled platform with EM4 HVA S electromagnet FC EM7 Field controlled platform with EM7 HV electromagnet FC EM10 Field controlled platform with EM10 HV electromagnet All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Units for Magnetic Measurement Units for Magnetic Measurement EL NEN ILLO Conversion Factor C 1 amp rationalized mks Magnetic flux density B gauss G 10 tesla T Wb m magnetic induction Magnetic flux maxwell Mx G cm weber Wb volt second Vs Magnetic potential difference U F gilbert Gb 10 4 ampere magnetomotive force Magnetic field strength H oersted Oe Gb cm 103 4 A m magnetizing force Magnetic polarization J emu cm 4 x 10 T Wb m intensity of magnetization Mass magnetization o M emu g 1 A m kg An x 107 Wb m kg Magnetic moment m emu erg G A m joule per tesla J T dimensionless emu cm az dimensionless 4 107 henry meter Wb A m m kg H m kg Magnetic dipole moment Volume susceptibility X K Mass susceptibility cm g emu g
19. 180 diameter x 8 in HMMA 1818 VR Probe metal axial 0 180 diameter x 18 in MMA 1818 VH Probe metal axial 0 180 diameter x 18 in HMMA 1836 VR Probe metal axial 0 180 diameter x 36 in MMA 1836 VH Probe metal axial 0 180 diameter x 36 in HMMA 1808 WL Probe metal axial 0 180 diameter x 8 in MMA 1808 WL Probe metal axial 0 180 diameter x 8 in HMMA 2502 VF Probe metal axial 0 25 diameter x 2 in MMA 2502 VG Probe metal axial 0 25 diameter x 2 in HMMA 2508 VF Probe metal axial 0 25 diameter x 8 in MMA 2508 VG Probe metal axial 0 25 diameter x 8 in HMMA 2502 VR Probe metal axial 0 25 diameter x 2 in MMA 2502 VH Probe metal axial 0 25 diameter x 2 in HMMA 2508 VR Probe metal axial 0 25 diameter x 8 in MMA 2508 VH Probe metal axial 0 25 diameter x 8 in HMMA 2536 WL Probe metal axial 0 25 diameter x 36 in MMA 2536 WL Probe metal axial 0 25 diameter x 36 in HMNA 1902 VF Non metallic axial 0 187 diameter x 2 in MNA 1902 VH Non metallic axial 0 187 diameter x 2 in HMNA 1904 VF Non metallic axial 0 187 diameter x 4 in MNA 1904 VH Non metallic axial 0 187 diameter x 4 in HMNA 1908 VF Non metallic axial 0 187 diameter x 8 in MNA 1908 VH Non metallic axial 0 187 diameter x 8 in HMNA 1902 VR Non metallic axial 0 187 diameter x 2 in MNA 1902 VG Non metallic axial 0 187 diameter x 2 in HMNA 1904 VR Non metallic axial 0 187 diameter x 4 in MNA 1904 VG Non metallic axial 0 187 diameter x 4 in HMNA 1908 VR Non metallic axial 0 187 diameter x 8
20. 95 in 100 mm 110 mm 4 33 1n p 4 0 10 20 EU AD 80 80 70 Current EM4 HVA 76 mm 3 Pole Face Field Plot x 5 mm 0 20 10 mm 0 39 20 T 115 0 59 16 3 mm 0 64 1n 20 mm 0 79 in 22 9 mm 0 90 in 45 1 Ui i 25 mm 0 98 in i 28 4 mm 1 12 1n 38 1 mm 1 5 50 mm 1 97 50 8 mm 2 00 P 75 mm 2 95 in P 100 mm 3 94 1n l PLE 7110 mm 4 33 22 2 0 10 20 30 40 50 50 Current 51 mm 2 in Pole Face Field Plot 35 sn 5 mmn 5 26 0 NET 10 mm 0 39 in 15 mm 0 59 11 15 3 mm 0 64 in D nun 0 79 iri cnr C BO in mm 0 98 11 amp 4 Tm 1 22 in M Wn LI MIN 25 ha 2 2 2 2 38 1 1 5 17 p 50 1 97 irr 40 8 7 90 in 75 mm 2 95 in 1604 mm 3 54 inj 125 mm 4 92 in 133 5 riri 6 256 irj ndr p a o 10 en in 52 he r go at 160 Current A 102 mm 4 in Pole Face Field Plot 5 mm 0 20 in 16 mm 0 39 in 15 mm 0 59 in 15 3 mm 0 6 in 20 mm 0 79 1 22 9 vr 0 90 in 25mm 9 98 in 28 4 1 2 dn 3 amp 1 nm 1 5 17
21. Absolute maximum input voltage 100 V WARNING voltages between 60 V and 100 V will not damage the instrument but could result in personal injury or damage to other instruments Update rate 5 rdg s display 30 rdg s IEEE 488 30 rdg s serial DC DC resolution 5 digits DC integrator capacitance 1 uF nominal DC input resistance DC ranges DC resolution DC accuracy Offset 10 uVs DC integrator drift gain 0 25 of reading 10 Vs s maximum rate of change DC minimum d dt 20 uVs min DC maximum d dt 60 Vs s DC integrator drift 1 uVs min 0 0004 full scale min on 300 mVs range 100 input resistance constant temperature environment DC Peak DC peak resolution 4 digits DC peak integrator capacitance 1 uF nominal 100kQ 100kO 10 10 KO 300 mVs DC peak input resistance DC peak ranges DC peak resolution DC peak minimum reading DC peak accuracy Offset 100 uVs DC integrator drift gain 5 of reading 10 Vs s maximum rate of change DC peak maximum d dt 60 Vs s DC peak update rate Reduces update rate to 1 4 normal AC AC resolution 4 digits reduced to 334 digits on the 30 uVs range AC integrator capacitance 0 1 uF nominal AC input resistance 100 kO 100 100 100 AC ranges 300 uVs AC resolution AC minimum reading AC frequency response 2 Hz to 50 kHz AC accuracy 1 rdg 10 uVs 10 Hz to 10 kHz sinusoidal 5 rdg 10 uVs 2 Hz to 50 kHz sin
22. DCto 350G 3 5kG 0 25 30 2 max 0 005 0150 po epoxy 20 kHz 35 kG to 35 kG 0 C to P 4 0125 0 061 0 180 0 050 Tum m DC to 0 10 575 us max 0 005 400 hz HST 4 155016 35 G 350 6 0 13G C 0 005 0 045 0 150 Fiberglass DC to 3 5 KG 35 kG 0 15 30 0 005 800 Hz to 35 KG cable length 64 mm 2 5 in 9 1 0 76 mm diameter 0 36 0 030 in T Active Stem Frequency Usable full scale ranges Corrected accuracy Operating Temp coefficient Contains in area in material range rdg temp coefficient max calibration temp range max zero sensor 76 13 3 mm 3 0 5 0 125 in gt 3 18 mm diameter max 9 53 mm oi in 0 375 in B DC to HSE 0 20 to 30 KG 0 135 0 025 0 125 0 040 dia hes 20kHz 3 56 35 6 350 3 5 35KG 0 25 301035kG 7009 GPC 0 015 m max max 0 005 approx tubing DC to HST 4 0 10 to 30 75 C 0 13 6 _0 005 800 Hz 35 G 350G 3 5KG 35kG 0 15 30 to 35 kG MOD www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com EN EN Model 475 DSP Gaussmeter Model 475 Specifications General Measurement Does not include probe error unless otherwise specified Input type Single Hall effect sensor Probe features Line
23. G C 0 005 C 30 kG to 30 kG www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Model 421 Specifications General Measurement Number of inputs 1 Update rate 5 rdg s on display up to 18 rdg s with serial interface Probe compatibility Standard and custom probes including Model 420 and 450 probes Probe features Linearity Correction Auto Probe Zero Measurement features Autorange Max Hold Relative Mode Filter Probe connector 15 pin D style DC Measurement DC display resolution 4 digits with filter 33 digits without filter Probe type Range Resolution with filter Resolution without filter HST Probe 300 kG 30 kG 3 kG 300 G HSE Probe 30 kG 3 kG 300 G 30 6 UHS Probe 30 G 3G 300 mG 0 1 kG 0 01 kG 0 001 kG 0 0001 kG 0 01 G 0 01 kG 0 001 kG Z5 Pr Sis log NU AD 0 001 kG c Gq DC accuracy 0 20 of reading 0 05 of range DC temperature coefficient 0 05 of reading 0 03 of range per C AC RMS Measurement AC display resolution 33 digits Probe type Range HST probe 300 kG 30 kG 3 kG 300 0 HSE probe 30 kG Resolution 0 1 3 kG 001 kG 300 G 0 1G 30 G 0 01 G UHS probe 30 G 0 01 G 918 0 001 G 300 mG 0 1 mG AC frequency range 10 Hz to 400
24. Hz AC accuracy 2 of reading 50 Hz to 60 Hz AC frequency response 0 to 3 5 of reading 10 Hz to 400 Hz All AC specifications for sinusoidal input gt 1 of range Front Panel Display type Large 2 line x 20 character vacuum fluorescent display Display resolution To 4 digits Display update rate 5 rdg s Display units Gauss G tesla T Units multipliers m Annunciators RMS AC input signal DC DC input signal MAX max hold value 5 relative reading remote operation alarm on Keypad 12 key membrane Front panel features Display prompts front panel lockout brightness control www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Model 421 Gaussmeter Interfaces RS 232C capabilities Baud 300 1200 9600 Connector DE 9 DTE configuration Software support LabVIEW driver consult Lake Shore for availability compatible with Model 420 command set Alarm Settings High and low setpoint Inside Outside Audible Sort Actuators Display annunciator sort message beeper relay Relay Number 1 Contacts Normally open NO normally closed NC and common C Contact rating 30 VDC at 2 A Operation Follows alarm Connector Detachable terminal block Monitor analog output Configuration Real time analog voltage output Range 3 V Scale 3 V full scale on selected range Frequency response DC to 400 Hz Accuracy Probe dependent Minimum load resistance 1 short circuit prot
25. conductor is called the Hall voltage and can be measured by attaching two electrical contacts to the sides of the conductor The Hall voltage can be given by the expression V YB 110 where V Hall voltage mV Magnetic sensitivity mV per kG at a fixed current B Magnetic field flux density kG Angle between magnetic flux vector and the plane of Hall generator As can be seen from the above formula the Hall voltage varies with the angle of the sensed magnetic field reaching a maximum when the field is perpendicular to the plane of the Hall generator www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Hall generators come in axial and transverse configurations Transverse devices are generally thin and rectangular in shape They are applied successfully in magnetic circuit gaps surface measurements and general open field measurements Axial sensors are mostly cylindrical in shape Their applications include ring magnet center bore measurements solenoids surface field detection and general field sensing See the individual Hall generator illustrations for physical dimensions Active Area The Hall generator assembly contains the sheet of semiconductor material to which the four contacts are made This entity is normally called a Hall plate The Hall plate is in its simplest form a rectangular shape of fixed length width and thickness Due to the shorting effect of the current sup
26. details on properly selecting a probe and for a complete listing of available probe models cable length 64 mm 2 5 in 1 i 2 4 9 1 0 76 mm diameter 0 36 0 030 in Active Stem Frequency Usable full scale Corrected Operating Contains area in material ranges accuracy temp coefficient coefficient temp rdg range C max zero max sensor calibration 0 005 Fiberglass DC to HSE 0 20 to 0 003 epox 20 kHz 3 5 G 35 G 30 kG and cm 3506 3 5kG 0 25 30 eee nidi 10 kHz 35 kG to 35 kG 0 C to n 0 005 0 030 dia Fiberglass DC to 0 4 0125 0 187 dia 0 005 0 003 approx 800 Hz HST 4 aye is 75 C 363506 15 30 2 0 063 0 25 dia 0 006 0 005 Aluminum 400 Hz 3 5 kG 35 kG 0 35 KG cable length 64 mm 2 5 4 141 2 m 6 5 ft _T B 4 0 125 0 187 dia 0 005 Yes 0 13 G C 0 005 C c ojo oO O1 mua Lia 0 76 mm diameter 0 36 0 030 L in T in W in A in Active Stem Frequency Usable full scale Corrected Operating Temp Temp coefficient Contains area material range ranges accuracy temp coefficient max calibration temp in rdg range max zero sensor 0 061 0 180 4 0 125 max 0 005 DC to HSE 0 20 Aluminum 800 Hz 3 5 6 35 G to 30 kG 440125 0045 0 150 Fiberglass
27. display LCD 3 digits Resolution 0 1 G on the 200 G range DC accuracy 2 reading 0 1 full scale at 25 C includes instrument probe and a calibration transfer AC accuracy 5 of reading Frequency response DC and 20 Hz to 10 kHz Ranges 200 0 G 20 00 mT 2 000 kG 200 0 mT 220 00 kG 2 000 Temperature range 0 C to 50 C operating Instrument temperature coefficient 0 05 rdg C Instrument and probe temperature coefficient 0 1 rdg C Weight 0 45 kg 1 Ib Size 193 H x 99 mm W x 43 2 mm D 7 6 in x 3 9 in x 1 7 in Power 4 AA battery operated battery life gt 160 h Approval CE mark 614 891 2244 Model 410 shown in the 4107 bench support Ordering Information Part number 410 SCT 410 SCA 410 SCAT 410 HCAT 410 in soft case with a transverse probe 410 in soft case with an axial probe 410 in soft case with a transverse and axial probe 410 in a hard case with a transverse and axial probe Accessories included MST 410 MSA 410 Transverse and or axial probe MPEC 410 3 4106 4102 Extension cable Set of 4 AA batteries Model 410 user manual Accessories available 4060 4106 4107 4141 4142 CAL 410 CERT CAL 410 DATA CAL N1 DATA MSA 410 MST 410 MSA 2202 410 MSA 2204 410 MST 9P02 410 MST 9P04 410 MPEC 410 3 MPEC 410 10 Zero gauss chamber Set of 4 AA batteries Model 410 bench support Soft case Hard case Instrument recalibration with ce
28. in dia bore for optical access through one pole EM4 1PB 0 2 4 Pole cap 1 pair 102 mm 4 in tapered to 25 mm 1 in face 6 4 1 4 in dia bore for optical access through both poles EM4 2PB 0 1 2 Pole cap 1 pair 102 mm 4 in tapered to 51 mm 2 in face 3 2 mm 1 in dia bore for optical access through one pole EM4 2PB 0 2 2 Pole cap 1 pair 102 mm 4 in tapered to 51 mm 2 in face 3 2 1 in dia bore for optical access through both poles EM4 2PB 0 1 4 Pole cap 1 pair 102 mm 4 in tapered to 51 mm 2 in face 6 4 mm 1 4 in dia bore for optical access through one pole EM4 2PB 0 2 4 Pole cap 1 pair 102 mm 4 in tapered to 51 mm 2 in face 6 4 1 4 in dia bore for optical access through both poles EM4 3PB 0 1 2 Pole cap 1 pair 102 mm 4 in tapered to 76 mm 3 in face 3 2 mm 1 in dia bore for optical access through one pole EM4 3PB 0 2 2 Pole cap 1 pair 102 mm 4 in tapered to 76 mm 3 in face 3 2 mm 1 dia bore for optical access through both poles EM4 3PB 0 1 4 Pole cap 1 pair 102 mm 4 in tapered to 76 mm 3 in face 6 4 mm 1 4 in dia bore for optical access through one pole EM4 3PB 0 2 4 Pole cap 1 pair 102 mm 4 in tapered to 76 mm 3 in face 6 4 1 4 in dia bore for optical access through both poles EM4 4PB 0 1 2 Pole cap 1 pair 102 mm 4 in dia with 102 mm 4 in face 3 2 mm 1 in dia bore for optical access through one pole EM4 4PB 0 2 2 Pole cap 1 pair 102 mm
29. kG 00 001 kG 0 0002 kG 000 02 G 00 020 G 00 001 kG 0 0001 000 02 00 002 0 0020 00 001 396G 0 0002 350 mG 000 02 mG 35 mG 00 020 mG Measurement resolution RMS noise floor Indicated by value in above table for periodic mode and shorted input Display resolution Indicated by number of digits in above table Max reading rate periodic mode 30 rdg s Peak accuracy 5 Hz to 20 kHz 2 of reading 1 of full scale range 50 us or longer pulse width Peak frequency range periodic mode 10 Hz to 5 kHz Peak frequency range pulse mode 5 Hz to 20 kHz Temperature Measurement Temperature range Probe dependent typically 0 C to 75 C Measurement resolution 0 01 C Temperature display resolution 0 01 C Electronic accuracy 0 7 C Front Panel Display type 2 line x 20 character vacuum fluorescent with 9 mm high characters Display resolution 5 digits Display update rate 5 rdg s Display units gauss tesla T oersted 0e and ampere per meter A m Units multipliers m M Display annunciators DC DC measurement mode RMS AC RMS measurement mode PK Peak measurement mode hold value MN Min hold value SP Relative setpoint value LED annunciators Relative reading mode Alarm active Remote IEEE 488 operation Keypad 22 full travel keys Front panel features Display prompts front panel lockout and b
30. lakeshore com Gaussmeter Hall Probes Transverse Flexible Transverse Probes m cable length 2 m 6 5 ft 64 mm 2 5 in L A 9 1 0 76 0 36 0 030 in diam 4 3 2 mm 0 125 in diam max M w W in T in A in L in in Active Stem Frequency Usable full Corrected Operating Temp Temp coefficient Contains area material range scale ranges accuracy temp coefficient max calibration temp in rdg range max zero sensor at 25 C for Models 475 and 455 HSE 0 20 DC to 356 356 to30kG 20kHz 350G 3 5kG 0 25 30 0 09 0 20 lt 0 015 70 0 040 35 kG to 35 kG dia approx Flexible HST 4 0 10 DC to 35 G 350 G to 30 kG 013 G C 800 oe 0 15 30 0 13 G 0 005 3 5 35 plastic to 35 kG tubing HSE DCto 356 356 0 50 to 0 030 20kHz 350G 3 5kG 35kG 0 09 G C 0 015 C dia 35 kG 0 C to approx m HST 4 mm 75 C 396 3506 72 0 13 G C 0 005 3 5 kG 35 kG DC to HSE 0 20 7 Flexible 3 5 6 356 to 30 kG 0 09 G C 0 015 0 040 plastic DC to 390 G 3 5 kG 0 25 30 dia tubing 50 kHz 35 kG to 35 kG M n DC to ichs e e fiberglass 800 Hz in e 0 15 30 0 13 G C 0 005 C aA to 35 kG HMFT 3E03 VR 0 135 0 025 0 125 max max 0 005 HMFT 3E03 VF HMFT 2903 VJ 0 085 0 020 0 065 max max 0 005 HMFT 2903 V
31. mV s 300 mV s TE 3 5 30 mV s E E 300 uV s ioo E 3 5 30 mT 30 uV s 10 mT 300 uV s m 3 mT 3 UV s 1 30 uV s 10 mT FNT 5P04 30 5 LE 0 36 in dia x 0 0 055 in 102 3 18 4 0 125 3 sensing coil 8 13 mm 0 32 in NOTE is designated as that flux passing through the coil into the side with the Lake Shore logo on the probe handle Ordering Information Part number Description FNT 5P04 30 Field probe 30 cm FNT 6R04 100 Field probe 100 cm All specifications are subject to change without notice fax 614 818 1600 e mail info lakeshore com Model 642 Electromagnet Power Supply Model 642 Electromagnet Power Supply Bipolar linear true 4 quadrant output 70 A 35 V 2 5 kW Can be modulated to frequencies up to 0 17 Hz at 70 A Low noise 0 1 mA of programmed gt current resolution Analog programming IEEE 488 and 5 232 interfaces akeShore Mose 642 Electromagnet Power Sapoty Built in fault protection e Compact design Introduction Output architecture compliant to both the The Model 642 electromagnet power The Model 642 output architecture relies on low low voltage directive and the supply is a linear bipolar current noise linear input and output stages The linear electromagnetic compatibility EMC source providing true 4 quadrant circuitry
32. pulse widths Data buffer sampling rates to 1000 readings per s Computer interface sampling rates to 100 new readings per s Integrated electromagnet field control algorithm Standard probe included Standard and custom probes available The First Gaussmeter with DSP Technology Model 475 DSP Gaussmeter Model 475 DSP Gaussmeter CC 475 DSP Gaussmeter The First DSP Gaussmeter Lake Shore combined the technical advantages of digital signal processing with over a decade of experience in precision magnetic field measurements to produce the first commercial digital signal processor DSP based Hall effect gaussmeter the Model 475 DSP technology creates a solid foundation for accurate stable and repeatable field measurement while simultaneously enabling the gaussmeter to offer an unequaled set of useful measurement features The Model 475 is intended for the most demanding DC and AC applications In many cases it provides the functionality of two or more instruments in a field measurement system The power of DSP technology is demonstrated in the superior performance of the Model 475 in DC RMS and Peak measurement modes DC Measurement Mode Field Uniformity Plot Across on Electromagnet Pole Face Static or slowly 2 3800 changing fields are measured in 2 3700 DC mode where the accuracy 2 3600 resolution and stability of the Model 475 are 2 3500 Field Tesla most evident 2 3400 In
33. show the X Y and Z axis as three separate gaussmeters the X axis as a DC field reading with audible and visual alarm the Y axis as an RMS field value and the Z axis as a peak field value www lakeshore com Lake Shore Cryotronics Inc ANAUDO QUT O 1 0 614 891 2244 Model 460 Gaussmeter TARSAN OTE TE TE CEET meh T E CE CHANNEL 7 INPUT CHANNEL X CHARBNEL Vite See PROBE vt mmm AL OUT 9 Moni Probes and Sensors Lake Shore offers an extensive line of single two and three axis probes standard Hall sensors and probe accessories Lake Shore probes are factory calibrated for accuracy and interchangeability Factory calibrated probes feature a PROM in the probe connector so that calibration data can be read automatically by the instrument If the probe is equipped with a temperature sensor the Model 460 reads both temperature and field signal and continuously adjusts the calculated field value The customer can also download sensitivity for discrete Hall sensors In addition Lake Shore can custom design probes and assemblies to meet specific application needs Model 460 Rear Panel Configurations Model 460 configured as a 3 axis gaussmeter fax 614 818 1600 e mail info lakeshore com Model 460 Gaussmeter Model 460 Specifications General Measurement Number of inputs
34. temperature reading error Ordering Information Part number Description 455 Model 455 DSP gaussmeter 455 HMXX XXXX XX Model 455 DSP gaussmeter with standard probe choice specify selected probe number for HWXX XXXX XX see list on page 13 Specify line power option VAC 100 100 VAC configured includes U S power cord VAC 120 120 VAC configured includes U S power cord VAC 220 220 VAC configured includes universal Europe power cord VAC 240 240 VAC configured includes universal Europe power cord VAC 120 ALL 120 VAC configured includes U S and universal Europe power cords and all fuses Accessories included 106 253 106 264 4060 MAN 455 mating connector V O mating connector shell Zero gauss chamber Model 455 user manual Accessories available 4005 1 m 3 3 ft long IEEE 488 GPIB computer interface cable assembly includes extender required for simultaneous use of IEEE cable and auxiliary 1 0 connector Large zero gauss chamber for gamma probe User programmable cable with EEPROM 1 8 m 6 ft User programmable cable with EEPROM 6 1 m 20 ft Probe extension cable with EEPROM 3 m 10 ft calibrated Probe extension cable with EEPROM 3 m 10 ft uncalibrated Probe extension cable with EEPROM 7 6 m 25 ft calibrated Probe extension cable with EEPROM 7 6 m 25 ft uncalibrated Probe extension cable with EEPROM 15 m 50 ft calibrated Probe extension cable with EEPROM 15 m 50 ft uncalibrated
35. the peak of a periodic waveform for evaluation of crest factor The Model 475 can also be used to sample field changes at 1000 readings per second that can later be read over the interface to illustrate the shape of pulses or other waveforms High Speed Data Transfer The IEEE 488 interface can be set to send readings in binary format rather than the more common ASCII format This reduces interface overhead enabling real time reading rates up to 100 new readings per second Temperature compensation is not available at the highest interface rate Magnetizing Pulse with 20 ys Width Field Data Buffer Internal memory provides storage for 1024 field readings in a data buffer The buffer can be filled at high speed up to 1000 readings per second which is as much as ten times faster than the computer interface Stored readings can then be retrieved over interface at slower speed and processed offline A trigger input can be used to initiate the data log sequence Slower sample rates can be programmed if desired Trigger In and Trigger Out A TTL level hardware trigger into the instrument can be used to initiate the data log sequence A TTL level hardware trigger out indicates when the instrument completes a reading and can be used to synchronize other instruments in the system An IEEE 488 software based trigger can be used like the hardware trigger in The Probe Connection The Model 475 is only half of the magnetic fie
36. with certificate and data All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 HGA 2302 3 30 mm in diameter max 254 mm 10 i 06 mm 0 16 in ye e e e ne 67 mm o 105 in 2 79 mm 11 n diameter max HGA 3010 HGA 3030 TE mm CER a 2 67 mm 0 105 in dL 254 mm 10 iti sos mm 0 20 in Be gt 5 08 mm 0 20 in diameter The active area is symmetrical with the center line of the assembly and is located approximately 0 030 in behind the front surface of the assembly HGA 2303 General purpose axial 4 95 mm 0 195 in diameter 0 51 x 1 02 mm 0 020 x 0 040 in rectangle 200 mA 40 C to 100 C 0 08 C max 1 pV C max Lead Colors Red e Green k Bue Clear V Instrumentation quality axial low temperature coefficient 0 76 mm 0 030 in 100 mA HGA 3010 HGA 3030 Instrumentation quality axial phenolic package 0 76 mm 0 030 in diameter circle phenolic package diameter circle 300 mA 11 mV kG to 28 mV kG 9 9 mV kG to 11 0 mV kG 5 5 mV kG to 11 0 mV kG 0 55 mV kG to 1 05 mV kG 6 0 mV kG to 10 0 mV kG 10 kG to 10 kG 100 uV max 2 pV max E JV max 30 kG to 30 kG Ain kG to 100 v kG to 10 kG 30 kG to 30 kG ip to 0 1 0 005 C max 0 04 C max 0 4 uV C
37. 0 030 d DC HSE Eu 0 C 015 ia plastic to to C to 6 Jo HMFA 181 5 VR 15 0 5 0 005 10 kHz es e ae G 75 oC 0 09 G b 0 015 Yes aluminum to 35 for Models 460 450 and 421 Flexible 0 180 DC and HSE 1 0 015 0 030 dia plastic 0 to on 450 0 015 1 81 5 VH 15 05 RUE 0 005 approx tubing and 30 1 3 kG 0 25 to 30 kG 75 C 0 09 G 421 0 04 C Yes aluminum Cryogenic Axial Probes cable length 64 mm 2 1 3 m 10 ft 9 1 0 76 mm 0 36 0 030 in L in D in A in Active Stem Frequency Usable full Corrected accuracy Operating Temp Temp error Contains area in material range scale ranges rdg at 25 C temp range coefficient approx temp sensor max zero calibration for Models 475 and 455 _ HST 3 200 K CAT oso 20008 0005 aon ated 35 6 3500 2 10 100 kG 013G C 100K 350kG for Models 460 450 and 421 20 0 40 50 025dia 0 025 0 030dia Stainless 2 totooke 15 4049676 E a 0 50 0 006 0 005 approx steel 30kG 300kG 350 K 15K Axial Probes for Model 410 Gaussmeter E 66 16 4 mm 4 4 mm Stem material Usable full scale gt 2 6 40 25 in 7 0 4 175 in ranges MSA 410 0 005 x 0 005 Flexible plastic tu
38. 020 x 0 040 in rectangle 0 127 x 0 127 mm 0 005 in x 0 005 in square Input resistance approx Output resistance approx Nominal control current lcn Maximum continuous current non heat sinked 25 C Magnetic sensitivity nominal control current Maximum linearity error Zero field offset voltage nominal control current Operating temperature range sensitivity vs field rdg 450 Q to 9000 550 to 1350 O 1 mA 10 mA 150 mA 10 kG to 10 kG 20 kG to 20 kG 2 8 mV max 1 2 Mean temperature coefficient of magnetic sensitivity Mean temperature coefficient 0 06 C max 1 2 max of offset nominal control current Mean temperature coefficient of resistance Leads Data Compatible with Lake 0 15 C approx 0 18 C approx 34 AWG copper with poly nylon insulation Single sensitivity value at Ic 1 mA Shore Model 410 gaussmeter only Ordering Information Part number HGA 2010 HGA 2302 HGA 2303 HGA 3010 HGA 3030 Accessories available CAL 1X DATA Description General purpose axial Hall generator plastic package General purpose axial Hall sensor phenolic shoulder General purpose axial Hall sensor phenolic shoulder Instrumentation quality axial Hall generator phenolic package Instrumentation quality axial Hall generator phenolic package 1 axis Hall generator recalibration
39. 1 Flexible Transverse Probes MFT 3E03 VG MFT 3E03 VH MFT 4F15 VG MFT 4F15 VH MFT 2903 VH MFT 2903 VJ Probe flexible transverse 0 03 x 0 14 x 3in Probe flexible transverse 0 03 x 0 14 x 3in Probe flexible transverse 0 04 x 0 15 x 15 in Probe flexible transverse 0 05 x 0 15 x 15 in Probe flexible transverse 0 02 x 0 09 x 3 in Probe flexible transverse 0 02 x 0 09 x 3 in Model 460 450 and 421 Cryogenic Transverse Probes MCT 3160 WN Probe cryogenic transverse 0 25 dia x 60 in Model 460 450 and 421 Tangential Probes MNTAN DQ02 TH Probe tangential 0 125 x 0 38 x 1 5 in Model 460 450 and 421 Brass Stem Probes MMTB 6J02 VG MMTB 6J04 VG MMTB 6J08 VG MMTB 6J02 VH MMTB 6J04 VH MMTB 6J08 VH Probe brass stem 0 06 x 0 22 x 2in Probe brass stem 0 06 x 0 22 4 Probe brass stem 0 06 x 0 22 x 8 in Probe brass stem 0 06 x 0 22 x 2 Probe brass stem 0 06 x 0 22 x 4in Probe brass stem 0 06 x 0 22 x 8 in Model 410 Transverse Probes MST 410 MST 9P02 410 MST 9P04 410 CAL N1X DATA CAL N2X DATA CAL N3X DATA CAL 1X1 CERT CAL 1X1 DATA CAL 1X5 CERT CAL 1X5 DATA CAL 1X7 CERT CAL 1X7 DATA CAL 2X6 CERT CAL 2X6 DATA CAL 3X6 CERT CAL 3X6 DATA CAL G5 CERT CAL G5 DATA CAL G7 CERT CAL G7 DATA Probe transverse for the 410 Probe brass transverse for the 410 2 in Probe brass transverse for the 410 4 in Ordering Information Data and Certificates New Product Cal
40. 11 28 1 1 16 0 6 102 4 0 25 1 0 0 05 64 2 5 25 1 0 51 2 0 25 1 0 0 33 10 0 4 25 1 0 76 3 0 25 1 0 0 06 46 1 8 25 1 0 102 4 0 16 0 6 0 03 74 2 9 16 0 6 91 2 0 25 1 0 0 3596 18 0 7 25 1 0 102 4 0 25 1 0 0 03 66 2 6 25 1 0 51 2 0 13 0 5 _ 0 16 36 1 4 7 13 05 102 4 0 38 1 5 0 05 48 1 9 38 1 5 The third column gives uniformity over one cubic centimeter volume centered the a SUE ARMS magnet gap The last two columns give the cylindrical volume within which the magnetic field deviates by less than 196 from the central field The cylindrical volume is coaxial with the magnet poles and centered in the gap Up to 109 mm 4 3 in continuously variable Up to 178 mm 7 in continuously variable 0 25 per coil 0 5 Q total wired in series 1 0 Q per coil 0 5 total wired in parallel 51 mm 2 in 76 mm 3 25 76 102 1 4 51 mm 102 mm 152 mm 2 in 4 in in Tap water or closed cooling system Air gap Coil resistance nominal Standard pole cap diameter Optional pole cap diameter Cooling water Water flow rate 7 6 L min 2 gal min 11 4 L min 3 gal min Pressure drop 200 kPa 30 psi 220 kPa 32 psi Water chiller cooling capacity 2 5 KW 8 530 BTU h E 5 0 kW 17 060 BTU h Water inlet te
41. 4 in dia with 102 mm 4 in face 3 2 1 in dia bore for optical access through both poles EM4 4PB 0 1 4 Pole cap 1 pair 102 mm 4 in dia with 102 mm 4 in face 6 4 mm 1 4 in dia bore for optical access through one pole EM4 4PB 0 2 4 Pole cap 1 pair 102 mm 4 in dia with 102 mm 4 in face 6 4 mm 1 4 in dia bore for optical access through both poles EM4 CABLE Cable from magnet to supply 4 AWG m 10 ft EM4 FLOW Flow switch replacement EM4 HSTAND 3 3 level support structure for EM4 HVA with leveling feet EM4 STAND 2 2 level support structure for EM4 HVA with leveling feet All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 178 mm 7 in Electromagnets EM7 HV H yoke variable gap up to 178 mm 7 in with stand EM7 HV 0 H yoke variable gap up to 178 mm 7 in with optical access and stand Accessories included 1 set of pole caps corresponding pair of lead screws flow switch 3 m 10 ft 4 AWG cables Accessories available EM7 2P FECO Pole cap 1 pair 178 mm 7 in dia tapered to 51 mm 2 in face FeCo EM7 2P Pole cap 1 pair 178 mm 7 in dia tapered to 51 mm 2 in face EM7 3P Pole cap 1 pair 178 mm 7 in dia tapered to 76 mm 3 in face EM7 4P Pole cap 1 pair 178 mm 7 in dia tapered to 102 mm 4 in face EM7 6P Pole cap 1 pair 178 mm 7 in dia tapered to 152 mm 6 in face EM7 3P 0 1 2 Pole 1 pair 178 m
42. 50 mm 1 9 inj 55 8 nrr 2 00 mm 2 95 in 103 mm 13 26 in 125 mm 4 92 in 131 5 riri 256 in 100 Current A www lakeshore com Lake Shore Cryotronics Inc Magnetic Field kG Magnetic Field kG Magnetic Field kG Magnetic Field kG 614 891 2244 EM4 HVA 51 mm 2 in Pole Face Field Plot eo 5 inm 0 20 1 10 mm 0 39 imi AL a e 20 mm 0 7 in 23 mm 0 98 in po ac puer 28 4 1 22 im 5G mm 1 97 11 2 00 in E 15 mm 0 5 ini 18 3 0 64 m 75 mm 2 95 in 1020 mm 3 94 in 119 mm 4 33 in 10 e 30 e ro Current A EM4 HVA 102 mm 4 in Pole Face Field Plot 25 5 mm 0 20 in 20 110 mm 0 39 15 mm 0 59 in 16 3 mm 0 64 in 20 mm 0 79 in 22 9 mm 0 90 1n 125 mm 0 98 in 28 4 mm 1 12 in 138 1 mm 1 5 in 50 mm 1 97 in 50 8 mm 2 00 in 75 mm 2 95 in 3 94 in 110 mm 4 33 in T 1 80 70 Current EM7 HV 76 mm 3 in Pole Face Field Plot 5 mm 0 20 in 10 mm 0 39 im 15 mm 0 59 in 16 3 mm 0 64 1n 20 mm 0 79 in 22 9 mm 0 90 in 25 mm 0 98 in 28 4 mm 1 12 in 38 1 mm 1 5 in 50 mm 1 37 in 50 8 mm 2 00 1n 75 mm 2 95 in 100 mm 3 94 in 125 mm 4 92 in 133 7 mm 5 265 i
43. 56G 350 mG 35 mG 00 001 kG 0 0002 kG 000 02 G 00 020 G 00 001 kG 0 0001 kG 000 02 G 00 002 G 0 0020 G 00 001 G 0 0002 G 000 02 mG 00 020 mG Measurement resolution RMS noise floor Indicated by value in above table for shorted input Display resolution Indicated by number of digits in above table Max reading rate 30 rdg s 100 to 1000 rdg s limited feature set interface dependent www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 AC accuracy 1 of reading gt 1 of full scale range AC frequency range 1 Hz to 1 kHz narrow band mode 100 Hz to 20 kHz wide band mode AC band limiting filters 18 user selected frequencies of 3 low pass or 15 band pass Peak Measurement Probe Type 4 digit Ranges Resolution HST Probe 350 kG 35 kG 3 5 kG 350 G 35 G HSE Probe 35 kG 3 5 kG 350 G 35 G 35G UHS Probe 000 01 kG 00 001 kG 0 0002 kG 000 02 G 00 020 G 00 001 kG 0 0001 kG 000 02 G 00 002 G 0 0020 G 00 001 G 0 0002 G 000 02 mG 00 020 mG Measurement resolution RMS noise floor Indicated by value in above table for periodic mode and shorted input Display resolution Indicated by number of digits in above table Max reading rate periodic mode 30 rdg s 100 to 1000 rdg s limited feature set interface dependent Peak accuracy 5 Hz to 20 kHz 2 of rdg gt 1 o
44. 57 mm 0 062 12 7 mm 0 5 in wide 062 200 1 accuracy MRT 062 500 1 accuracy Axial 7 92 mm 0 312 in diameter working space MRT 062 1K 0 5 accuracy MRA 312 2K 1 accuracy MRT 062 2K 0 5 accuracy MRA 312 1K 1 accuracy MRT 062 5K 0 5 accuracy 100 1 mm dia 39 6 3 94 in pi v 22 6 pus 1 56 0 0 2 19 7 9 42 0 31 in min dia 04 8 mm 27m park 1 al 12 7 mm working space 4 125 0 5 in dia entry hole LL W center line of magnet is center of gap Axial 7 92 mm 0 312 in diameter working space 312 100 1 accuracy 1 57 i ein in gap MRA 312 200 1 accuracy 12 7 mm 0 5 in wide php MRT 062 10K 0 5 accuracy 314 500 1 accuracy 100 1 mm 85 85 mm 3 94 in 3 38 in dia 12 7 mm 12 7 mm 0 50 in dia 0 50 in dia entry hole entry hole 86 61 mm sal 3 41 in t amp 2 62 mr 41 91 mm 1 65 in 2 07 1n A calibrated field B calibrated field on center line of center line of gap 31 75 mm 1 25 in to 30 48 mm 1 2 in to 8 71 mm 0 343 in gap 8 71 mm 0 343 in gap MRT 343 1K 1 accuracy MRT 343 50 1 accuracy MRT 343 2K 1 accuracy MRT 343 100 1 accuracy MRT 343 200 1 accuracy Gaussmeter Hall Probe Accessories lero Gauss Chambers To obtain a null field reference a zero gauss chamb
45. 8 0 125 id poy MMA 1802 VH 2 0 063 HSE 1 450 MMA 1808 VH 8 0 125 0 180 dia 0 002 306 3006 50795 0 09 G C 0 015 C Yes MMA 1818 VH 18 025 0 004 0 015 ae 3 kG 30 KG 421 0 04 MMA 1836 VH 36 0 25 0 005 0 C to 2502 2 0 063 75 MMA 2508 VH 820 125 0 22 dla 0 006 MNA 1902 VG 2 0 125 190416 4 0125 0 187 dia 0 005 00 0 030dia Fiberglass MNA 1908 VG 8 0125 ib approx epoxy MMA 1802 VG 2 0 063 f MMA 1808 VG 8 0 125 0 180 dia 0 002 ES 0 1818 6 18 025 0 004 m 3 105 0 13G C 0 005 2502 6 2 0 063 Aluminum 820125 0254 0006 0005 MMA 1808 WL 8 0125 01904 4 7 2790 MMA 2536 WL 56 025 0 25 dia 0 006 30kG 300kG 05 www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Gaussmeter Hall Probes Axial Flexible Axial Probes cable length 64 mm 2 5 in 2 m 6 5 ft 25 mm 1 in b A D L in D in A in Active Stem Frequency Usable full scale Corrected Operating Temp Temp coefficient Contains area in material range ranges accuracy temp range coefficient max calibration temp rdg at 25 C max zero sensor 9 1 0 76 mm 0 36 0 030 in ree 3 2 mm 0 125 in diam max for Models 475 and 455 0 01
46. A i ce 25 11 p v in 25 om _ 9 8 3 5 1 5 EA P 55 9 cm 22 int r m ee in L3 em pain Jar mounting te floor for mounting flacr ad em 20 5 1 em 210 www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 EM4 HSTAND 3 Aluminum 3 level support structure for EM4 HVA magnets Bottom access to the center of the magnet Compact 0 86 34 in high 3 level aluminum structure supports the magnet and provides a flexible structure for mounting of additional hardware Leveling feet Raises the center of the magnet 0 61 m 2 ft above the ground to provide a comfortable height for sample exchange Plate below and above the magnet provided to support test structures or instrumentation Weight 54 4 kg 120 Ib not including magnet Dimensions 0 58 m W x 0 51 m D x 0 86 m H 23 in W x 20 in D x 34 in H Shipping weight 269 9 kg 595 Ib with EM4 HVA magnet Shipping dimensions 0 91 m W x 0 61 mD x 1 09 m H 36 in x 24 in x 43 in EM4 STAND 2 2 level support structure for all 4 magnets Compact 0 53 m 21 in high 2 level aluminum support structure supports the magnet and provides a flexible mounting structure B leveling feet Weight 35 4 kg 78 Ib not including magnet Dimensions 0 58 m W x 0 51 m D x 0 53 23 in W x 20 in D x 21 in H Sh
47. ATA Instrument recalibration with certificate and data 6041 Water flow switch 6042 Water valve All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Linear bipolar water cooled power supply 100 ppm class current stability Low ripple noise from 5 mV 5 kW and 8 8 kW CE compliant Local and remote programming and monitoring LEDs indicating power supply status Power output disable upon fault detection Thermally protected B Output connectors at cabinet rear protected by removable cover Steel cabinet with wheels and leveling feet The 660 series are true linear bipolar DC power supplies using a fixed diode rectifier to convert AC to DC and a pass transistor stage to regulate the output to the power supply They act as a DC current source and can be operated manually from the front panel or remotely via a 10 V input The user can also set current and voltage limits The bipolar operation of these power Supplies provides a smooth transition through zero eliminating the need for current reversal contactors or relays Linear magnet power supplies have several advantages over switch mode power supplies including smooth field generation that is nearly free from offending electromagnetic signatures The clean field background allows greater resolution and finer detail in results drawn f
48. H HMFT 4F15 VR ieee 0150 0045 0 150 0 005 0 050 HMFT 4F15 VF for Models 460 450 and 421 HSE 1 450 460 MFT 3E03 VH um 30 G 300 G to 0 09 G C 0 015 C Yes 0 135 0 025 0 125 3 kG 30 kG 421 0 04 M dia max max 0 005 HST 2 MFT 3E03 VG approx 300 G 3 E 0 0 13 G C 0 005 C 3 exible 30 kG 0 5 0 375 lastic 99 0 125 MET eee 450 460 MFT 2903 VJ T 0 6 3006 7 45 0 09 G C 0 015 C Yes 0 085 0 020 0 065 DC and 3 3056 0 C to 421 0 04 C dia 10 Hz to 0 005 approx 400 Hz HST 2 75 C MFT 2903 VH 300 G 3 kG 0 13 6 26 0 005 C 30 kG 0 25 to Flexible HSE 1 30 kG 450 460 MFT 4F15 VH plastic 30 G 300 G 0 09 G C 0 015 C Yes 0 150 0 045 0 150 15 0 75 tubing 3 kG 30 kG 421 0 04 C 0 005 0 050 0 5 HST 2 0 15 to epoxy 300G 3kG 74 0 13 G C 0 005 C fiberglass 30 kG MFT 4F15 VG www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Gaussmeter Hall Probes Transverse Cryogenic Transverse Probes cable length 3 m 10 ft 64 i 2 5 in SS Ems m L in D in A in Active area Stem Frequency Usable full scale Corrected Operating Temp Temp error Contains in material range ranges accuracy temp range coefficient approx temp sensor rdg max z
49. HSE 0 20 to 30 kG 0 135 0 025 0125 0 040 dia jos 20kHz 356 35 6 350 3 5 35KG 0 25 3040356 0 00 1009870 gt 0 015 0 max max 0 005 approx DC to HST 4 0 10 to 30 kG 75 C 0 13 GC _0 005 800 Hz 35 G 350 G 3 5 35kG 0 15 30 to 35 kG n TE www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Model 455 DSP Gaussmeter Model 455 Specifications General Measurement Does not include probe error unless otherwise specified Input type Single Hall effect sensor Probe features Linearity compensation temperature compensation auto probe zero and hot swap Measurement features Autorange max min hold relative mode and frequency Connector 15 pin D style DC Measurement Probe type 534 08 434 digit 3 digit ranges resolution resolution resolution HST Probe 350 kG 000 001 kG 000 01 kG 000 1 kG 00 001 kG 00 01 kG 0 0001 kG 0 001 kG 000 01 G 000 1 G 00 0001 kG 0 00001 kG 000 003 0 00 0020 G 35 kG 3 5 kG 350 6 35G HSE Probe 35 kG 3 5 kG 350 G 00 0001 0 00001 kG 000 001 35 G 00 0003 G 00 002 G 00 01 G 3 5 6 0 00020 G 0 0015 G 0 004 G UHS Probe 35 G 3 5 G 00 0001 0 00001 G 00 001 G 00 01 G G 0 0001 G 0 001 G 350 mG 000 003 mG 000 02 mG 000 1 mG 35 mG 00 0020 mG 00 015 mG 00 04 mG Measur
50. MPEC 25 460 450 421 calibrated probe extension cable 25 ft MPEC 50 460 450 421 calibrated probe extension cable 50 ft MPEC 100 460 450 421 calibrated probe extension cable 100 ft MPEC 410 10 410 universal probe extension cable 10 ft MPEC 410 3 410 universal probe extension cable 3 ft Hall probe stands 4030 12 Hall probe stand 12 in post accepts 3 8 in dia Hall probe handle 4030 24 Hall probe stand 24 in post accepts 3 8 in dia Hall probe handle Zero gauss chambers 4060 Zero gauss chamber 4065 Zero gauss chamber for gamma probe Reference magnets MRA 312 100 Axial reference magnet 0 312 in inside diameter 100 G 1 MRA 312 200 Axial reference magnet 0 312 in inside diameter 200 G 1 MRA 312 300 Axial reference magnet 0 312 in inside diameter 300 G 1 MRA 312 500 Axial reference magnet 0 312 in inside diameter 500 G 1 MRA 312 1K Axial reference magnet 0 312 in inside diameter 1 kG 1 MRA 312 2K Axial reference magnet 0 312 in inside diameter 2 1 MRT 062 200 Transverse reference magnet 0 062 in gap 200 G 1 MRT 062 500 Transverse reference magnet 0 062 in gap 500 G 1 MRT 062 1K Transverse reference magnet 0 062 in gap 1 kG 0 5 MRT 062 2K Transverse reference magnet 0 062 in gap 2 kG 0 5 MRT 062 5K Transverse reference magnet 0 062 in gap 5 kG 0 5 MRT 062 10K Transverse reference magnet 0 062 in gap 10 kG 0 5 MRT 343 50 Transverse reference magnet 0 343 in gap 50 G 196 MRT 343 100
51. Model 475 and 455 Axial Probes Model 460 450 and 421 Axial Probes Gaussmeter Hall Probes HMMA 0602 TH Probe metal axial 0 06 diameter x 2 in MMA 0602 TH Probe metal axial 0 06 diameter x 2 in HMMA 0604 TH Probe metal axial 0 06 diameter x 4 in MMA 0604 TH Probe metal axial 0 06 diameter x 4 in HMMA 0608 TH Probe metal axial 0 06 diameter x 8 in MMA 0608 TH Probe metal axial 0 06 diameter x 8 in HMMA 0618 TH Probe metal axial 0 06 diameter x 18 in MMA 0618 TH Probe metal axial 0 06 diameter x 18 in HMMA 0802 UH Probe metal axial 0 08 diameter x 2 in MMA 0802 UH Probe metal axial 0 08 diameter x 2 in HMMA 0804 UH Probe metal axial 0 08 diameter x 4 in MMA 0804 UH Probe metal axial 0 08 diameter x 4 in HMMA 0808 UH Probe metal axial 0 08 diameter x 8 in MMA 0808 UH Probe metal axial 0 08 diameter x 8 in HMMA 1802 VF Probe metal axial 0 180 diameter x 2 in MMA 1802 VG Probe metal axial 0 180 diameter x 2 in HMMA 1808 VF Probe metal axial 0 180 diameter x 8 in MMA 1808 VG Probe metal axial 0 180 diameter x 8 in HMMA 1818 VF Probe metal axial 0 180 diameter x 18 in MMA 1818 VG Probe metal axial 0 180 diameter x 18 in HMMA 1836 VF Probe metal axial 0 180 diameter x 36 in MMA 1836 VG Probe metal axial 0 180 diameter x 36 in HMMA 1802 VR Probe metal axial 0 180 diameter x 2 in MMA 1802 VH Probe metal axial 0 180 diameter x 2 in HMMA 1808 VR Probe metal axial 0 180 diameter x 8 in MMA 1808 VH Probe metal axial 0
52. P L 305 mi 12 in www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Search Coils for use with the Model 480 tluxmeter only Search Coils Search Coils 100 field probe is the most commonly used search coil while the 30 field probe is useful for measurements in narrow gaps or where field gradients dictate the use of a smaller coil diameter FNT 6R04 100 Calibration accuracy 0 2596 Area turns approx 100 cm Coil resistance approx 550 Average coil diameter 10 4 mm Operating temperature range Input resistance fluxmeter 10 30kQ DC ranges 30 mV s 300 mV s 5 2 30 mV s Additional ranges 300 uV s 30 mT 3 5 30 uV s 3 mT 300 uV s 3 V s 300 uT 30 uV s 6 04 100 oo m 5 ft 19 1 mm 0 75 in dia max plastic stem 0 6 062 in _ 8 9 0 35 in t o mm 4 i 102 3 18 mm approx 4 20 125 sensing coil NOTE is designated as that flux passing through the coil into the side with the Lake Shore logo on the probe handle www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 FNT 5P04 30 0 3596 30 cm 110 0 3 9 mm S T 60 pa 30
53. SE probes use a highly doped indium arsenide active material The HST material is the more highly doped of the two and therefore will be less affected by radiation Some general information relating to highly doped indium arsenide Hall generators is as follows Gamma radiation seems to have little effect on the Hall generators Proton radiation up to 10 Mrad causes sensitivity changes less than 0 5 Neutron cumulative radiation 20 1 MeV 10 per sq cm can cause a 3 to 5 decrease in sensitivity In all cases the radiation effects seem to saturate and diminish with length of time exposed 1350 kG with Models 475 and 455 300 kG range with Models 460 450 and 421 35 kG with Models 475 and 455 30 kG range with Models 460 450 and 421 www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Selecting a Gaussmeter Hall Probe Orientation Getting to the field is part of the challenge in selecting a probe Field orientation dictates the most basic probe geometry choice of transverse versus axial Other variations are also available for less common more challenging applications Listed below are the standard configurations for HSE and HST probes UHS probes require special packaging that is not described here Transverse Transverse probes most often rectangular in shape measure fields normal to their stem width They are useful for most general purpose field measurements and are essential for work in magnet g
54. SP gaussmeter the Model 642 and continuous allowing the user to readily provides a versatile field control control the magnetic field as polarity changes system ideal for a wide range of user This is achieved without reversal contactors or defined applications These include but relays which would produce unintended field are not limited to magneto optical spikes and other discontinuities As a result magnetic hysteresis and susceptibility field hysteresis and other biases are avoided in and Hall effect measurements as well experimental data as in line annealing www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Model 642 Electromagnet Power Supply Output programming The Model 642 output current is programmed internally via the keypad or the computer interface externally by analog programming input or by the sum of the external and internal settings For internal programming the Model 642 incorporates a proprietary 20 bit digital to analog converter DAC that is monotonic over the entire output range and provides resolution of 0 1 mA External programming provides unlimited resolution The Model 642 generates extremely smooth and continuous ramps with virtually no overshoot The digitally generated constant current ramp rate is variable between 0 1 mA s and 99 999 A s To ensure smooth ramp rate the power supply updates the high resolution DAC 23 7 times per seco
55. Transverse reference magnet 0 343 in gap 100 G 1 MRT 343 200 Transverse reference magnet 0 343 in gap 200 G 1 MRT 343 1K Transverse reference magnet 0 343 in gap 1 kG 1 MRT 343 2K Transverse reference magnet 0 343 in gap 2 kG 1 All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Magnetic Field Sensors Magnetic Field Sensors Hall Generators Hall Generator Theory A Hall generator is a solid state sensor which provides an output voltage proportional to magnetic flux density As implied by its name this device relies on the Hall effect The Hall effect is the development of a voltage across a sheet of conductor when current is flowing and the conductor is placed in a magnetic field Electrons the majority carrier most often used in practice drift in the conductor when under the influence of an externally produced electric field These moving electrons experience a force proportional and perpendicular to the product of their velocity and the magnetic field vector This force causes the charging of the edges of the conductor one side positive with respect to the other resulting in an internally generated transverse electric field which exerts a force on the moving electrons equal and opposite to that caused by the magnetic field related Lorentz force The resultant voltage potential across the width of the
56. Update rate 30 rdg s ASCII to 100 rdg s binary no temperature compensation Software support LabVIEW driver Data Buffer Capacity 1024 field readings Reading rate 1 to 1000 rdg s Data transfer Through computer interface after data is logged Trigger Hardware trigger to begin data log sequence Alarm Settings High low setpoint Inside outside Audible and Sort Actuators LED annunciator beeper and relays Relays Number 2 Contacts Normally open NO normally closed NC and common C Contact rating 30 VDC at 2 A Operation Follows alarm or operated manually Connector 25 pin 1 0 connector Voltage output 1 Configuration Real time analog voltage output of wide band AC signal Range 3 5 V Scale 3 5 V full scale on selected range Frequency response 1 Hz to 40 kHz wide band AC Accuracy Probe dependent Noise 1 0 mV Minimum load resistance 1 short circuit protected Connector In 25 1 0 connector Voltage Output 2 Configuration Voltage output of field value generated by DAC Range 5 V Scale 43 5 V full scale on selected range Resolution 16 bit 0 15 mV Update rate 40 000 updates s Accuracy 10 mV Noise 0 3 mV Minimum load resistance 1 short circuit protected Connector In 25 pin 1 0 connector www lakeshore com Lake Shore Cryotronics Inc Model 475 DSP Gaussmeter EN Voltage Output 3 Configuration Voltage output of compensa
57. V 400 V 3 phase 60Hz9A 50 29 50 Hz 9 A 60 Hz 15A 50 Hz 15A 50 Hz 8A Volume 379pmat35psi 3 1gpmat35psi 3 1gpmat35psi 6gpmat40psi 329pmat30psi 3 2 gpm at 30 psi Pump PD 2 PD 2 PD 2 CP 55 PD 2 PD 2 Temperature range 5 C 10 30 C 9 10 C 5 C 10 359b 5 35 T 5 010 3596 Temperature stability 0 15 C 0 15 C 0155 04570 4015 046 Reservoir volume gal L 0 5 1 8 0 5 1 8 0 5 1 8 0 5 1 8 0 5 1 8 0 5 1 8 Case dimensions in 26 2 x 16 3 x 240 262x163x240 26 2x 163x240 304x213x293 304x213x293 30 4 21 3 293 mm 664 413 x 610 664x413x610 664x413x610 772 541 743 772x541x743 772x541 x 743 Shipping weight 91 kg 200 Ib 91 kg 200 Ib 91 kg 200 1300 2875 130 kg 287 1b 130 kg 287 Ib Performance specifications will be affected by changes in temperature ambient or coolant M 150 can be used with the EM7 magnet but do not operate the magnet above the rated wattage The chillers we offer are rated at 65 duty Ordering Information cycle This is appropriate for many common Part number Description magnet testing applications such as hysteresis RC EM4 200230 60 CE 2410 W 60 Hz recirculating chiller loops and other measurement applications RC EM4 200 50 CE 2180 W 50 Hz recirculating chiller where the operating cycle is spent at low to RC EM4 230 50 CE 2180 W 50 Hz recirculating chiller 3 medium current with only limite
58. ameter circle HGT 3030 Instrumentation quality transverse ceramic package HGT 2101 Low cost high Sensitivity surface mount 100 mA 300 mA 8 mV at 0 55 mV kG 6 0 mV kG 100 Oe min 11 mV kG to 28 to 1 05 mV kG to 10 0 mV kG 1 rdg 10 to 10 kG 1 rdg 30 to 30 kG 1 5 rdg 100 to 100 kG 0 30 rdg 10 to 10 kG 1 25 rdg 30 to 30 kG 2 0 rdg 10 to 10 kG in nominal control 100 uV max 150 uV max 2 8 mV max 50 uV max 75 uV max Operating temperature range 40 C to 100 C 65 C to 100 C 40 C to 100 C 55 C to 125 C 40 C to 100 C Mean temperature coefficient noe nma m 0 08 C max 0 15 C max 0 06 C max 0 005 C max 0 04 max Mean temperature coefficient of offset Ic nominal control 1 pV C max 3 uV C 1 2 pV C 6 uV C max x 0 4 uV C max x 0 3 uV PC current Mean temperature coefficient m 0 15 C 0 15 C 0 18 C of resistance 0 3 approx Leads 34 AWG copper 36 AWG copper 34 AWG copper 34 AWG copper 34 AWG copper with poly nylon with poly nylon with poly nylon with Teflon with poly nylon NA 34 AWG copper with poly nylon insulation insulation insulation insulation _ insulation _ _ insulation _ d single sensitivity value at Single Single 4 Room temperature 400 mA val
59. ance approx 128 mH x axis 74 mH y axis 2 A DC or RMS Max continuous current Operating temp range 20 C to 40 C 4 F to 104 F MH 12 107 mm 32 4 2 in 1 25 N wide 25 N 1 00 in high opening through banana jacks current input 59 2 mm a 2 33 in 305 mm 12 in 152mm 10 of x coil i X 6 in ID 15i 248 mm VN iin 9 75 in iA V y coil Support bd E Pith 1 4 A with 1 4 20 He _ tapped holes gto T s 108 mm i 4 25 in banana jacks X current input 1 to top of support L platform 254 mm 10 in 137 mm 5 4 in LI ABIIT 305 mm 12 in NOTE The MH Series coils are for use as low field standards Ordering Information They cannot be used with the Model 480 fluxmeter Part number Description MH 2 5 64 mm 2 5 in inside diameter maximum field approximately 60 G MH 6 152 mm 6 in inside diameter maximum field approximately 50 G MH 12 305 mm 12 in inside diameter maximum field approximately 26 G MH 2X 10 305 mm 12 in inside diameter x axis 248 mm 9 75 in inside ETS EAT EEN 0 All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronic
60. aps Several stem lengths and thicknesses are available as standard probes Axial Axial probes usually round measure fields normal to their end They can also be used for general purpose measurements but are most commonly used to measure fields produced by solenoids Several stem lengths and diameters are available as standard probes Flexible Flexible probes have a flexible portion in the middle of their stem while the active area at the tip remains rigid and somewhat exposed This unique feature makes them significantly more fragile than other transverse probes Flexible probes should only be selected for narrow gap measurement applications Tangential Tangential probes are transverse probes designed to measure fields parallel to and near a surface The active area is very close to the stem tip These probes are intended for this specific application and should not be selected for general transverse measurements Frequency Hall effect gaussmeters are equally well suited for measuring either static DC fields or periodic AC fields but proper probe selection is required to achieve optimal performance Metal Stem Metal stem probes are the best choice for DC and low frequency AC measurements Non ferrous metals are used for probe stems because they provide the best protection for the delicate Hall effect sensor without altering the measured field Aluminum is the most common metal stem material but brass can also be us
61. are factory calibrated for accuracy and interchangeability Factory calibrated probes feature a programmable read only memory PROM in the probe connector so that calibration data can be read automatically by the instrument Lake Shore can also custom design a probe to meet your specific application requirements Display The Model 421 has a 2 line by 20 character vacuum fluorescent display During normal operation the display is used to report field readings and give results of other features such as max min or relative When setting instrument parameters the display gives the operator meaningful prompts and feedback to simplify operation The operator can also control display brightness 614 891 2244 fax 614 818 1600 d 421 Gaussmeter Anm Following are four examples of the various display configurations Normal Reading the default mode with the display of the live DC field reading Max DC Hold On the maximum value is shown in the lower display while the upper display contains the live DC field reading Alarm On the alarm gives an audible and visual indication when the field value is selectively outside or inside a user specified range An output relay facilitates pass fail actuation Sort On the live reading is shown in the upper display while the lower display contains the pass fail repetitive sorting or testing message e mail info lakesh
62. arity Compensation Temperature Compensation Auto Probe Zero and Hot Swap Measurement features Autorange Max Min Hold Relative Mode and Frequency Connector 15 pin D style DC Measurement 534 008 434 digit 3 digit Ranges Resolution Resolution Resolution HST Probe 350 kG 000 001 kG 000 01 kG 000 1 kG 35 kG 3 5 kG 350 G 35 6 HSE Probe 35 kG 3 5 kG 350 G 35G Sod UHS Probe 39G DING 350 mG 35 mG 00 0001 kG 0 00001 kG 000 003 G 00 0020 G 00 001 kG 00 01 kG 00 001 G 00 01 G 0 0001 G 0 001 G 000 02 mG 000 1 mG 00 015 mG 00 04 mG Measurement resolution RMS noise floor Indicated by value in above table for shorted input Display resolution Indicated by number of digits in above table 534 00 494 9100 3 digit Resolution Resolution Resolution 00 0001 kG 0 00001 kG 000 001 G 00 0003 G 0 00020 G 00 0001 G 0 00001 G 000 003 mG 00 0020 mG 3 dB bandwidth 1Hz 10 Hz 100 Hz Time constant 15 Maximum reading rate 10 rdg s 30 rdg s 100 to 1000 rdg s 1mited feature set interface dependent DC accuracy 0 05 of rdg 0 005 of range DC temperature coefficient 0 01 of rdg 0 003 of range C AC RMS Measurement Probe Type 434 digit Ranges Resolution HST Probe 350 kG 000 01 kG 35 kG 3 5 kG 350 6 35 6 HSE Probe 35 kG 3 5 kG 350 G 35 6 356G UHS Probe 35 6 3
63. ate range for the measured field Autorange works in DC and AC measurement modes Auto Probe Zero Allows the user to zero all ranges for the selected measurement mode with the push of a key Display Units Field magnitude can be displayed in units of G T Oe and A m Max Min Hold The instrument stores the fully processed maximum and minimum DC or RMS field value This differs from the faster peak capture feature that operates on broadband unprocessed field reading information Relative Reading Relative feature calculates the difference between a live reading and the relative setpoint to highlight deviation from a known field point This feature can be used in DC RMS or Peak measurement mode Instrument Calibration Lake Shore recommends an annual recalibration schedule for all precision gaussmeters Recalibrations are always available from Lake Shore but the Model 455 allows users to field calibrate the instrument if necessary Recalibration requires a computer interface and precision low resistance standards of known value www lakeshore com Lake Shore Cryotronics Inc Model 455 DSP Gaussmeter Instrument Probe Features The Model 455 has the best measurement performance when used along with Lake Shore Hall probes Firmware based features work in tandem with the probe s calibration and programming to ensure accurate repeatable measurements and ease of setup Many of the features require probe characteristic
64. ations Magnet power supply Area that can support the magnet weight fax 614 818 1600 e mail info lakeshore com Recirculating Chillers EJ B CFC free refrigeration system Recirculating Chillers User adjustable low Lake Shore offers the NesLab 75 high temperature safety DER Lake Shore Model 4 and 150 Lake Shore Model RC EM7 recirculating chillers in order to provide a complete laboratory solution The NesLab chillers feature a CFC free refrigeration system with audible alarm A fully hermetic compressor provides trouble free long life performance m The refrigeration system utilizes a hermetically sealed compressor and hot gas bypass system of temperature control This system eliminates on off cycling and premature wear of the compressor Strong pumps provide continuous flow even through cooling lines with small IDs Specifically designed for 24 hour continuous duty circulation Compact design minimizes use of limited floor space Specifications Electromagnet EM4 EM4 EM4 EM7 EM7 EM7 NesLab model number M 75 75 75 150 150 M 150 Capacity 240W 80 WW 5045W 454W Power requirements 20010230V 200 V 220V10230V 20010230V 200
65. ator phenolic package Cryogenic transverse Hall generator ceramic package Lake Shore Cryotronics Inc Lead Colors Red Black Blue Yellow 1 axis Hall generator recalibration with certificate and data 614 891 2244 10 10 100 mA 300 mA 0 55 mV kG to 1 05 mV kG 1 096 rdg 30 kG 30 kG x 2 096 rdg 150 kG to 150 kG 200 uV max 1 5 K to 375 K see temperature error table below 0 4 uV K max 0 6 K max 34 AWG copper with Teflon insulation Room temperature 30 kG data supplied fax 614 818 1600 e mail info lakeshore com Helmholtz Coils Helmholtz Coils Field Standards for use with current source or power supply only We offer four Helmholtz coils for field standards 64 mm 2 5 in 152 mm 6 in and 305 mm 12 in diameter single axis and the MX 2X 10 double axis coil Field accuracy center 0 75 Inside diameter 64 mm 2 5 in 152 mm 6 in 305 mm 12 in x axis and EE mm 9 75 in y axis note coils are not exactly matched 0 5 within a 64 mm 2 5 in cube at center of MH 2X 10 0 5 within a cylindrical volume 76 mm 3 0 in long 76 mm 3 0 in diameter 0 5 within a cylindrical volume 41 mm 1 6 in long 0 5 within a cylindrical volume 19 mm 0 75 in long 19 mm 0 75 in diameter Field uniformity 41 mm 1 6 in diameter at center of coil at center of coil at center of coil DC coil resistance 3 Q 6 3 mH 20 Q x axis 15 y axis induct
66. automatic or manual control Connector Shared 4 pin detachable terminal block Flow or temperature switch and water valve not included Auxiliary Emergency stop Requires 1 A 24 VAC normally closed contact closure to enable power up jumper required if unused Fault output Relay with normally open or normally closed contact 30 VDC at 1 A Remote enable input TTL low or contact closure to enable output jumper required if unused Connector Shared 8 pin detachable terminal block Emergency stop and inhibit switches not included fax 614 818 1600 e mail info lakeshore com Model 642 Electromagnet Power Supply General Line power Power 5200 VA max Voltage and current 204 208 VAC 10 13 A phase 220 230 VAC 10 12 A phase 380 VAC 10 7 A phase 400 415 VAC 10 6 5 A phase Protection 3 phase thermal relay with adjustable current setting two class cc 1 4 A fuses over voltage lockout circuit Frequency 50 or 60 Hz Configuration 3 phase delta Connector 4 pin terminal block Line voltage must be specified at time of order but is field reconfigurable cable from power supply to facility power not included Cooling water Flow rate 5 7 L 1 5 gal per min minimum Pressure range 34 kPa 5 PSI to 552 kPa 80 PSI Pressure drop 10 kPa 1 5 PSI at 5 7 L 1 5 gal per min minimum for power supply only Temperature 15 C to 30 C non condensing Connection Two 10 mm 0 375 in hose barbs CAUTION Internal conde
67. bing 200 G 2 kG 20 kG 3 2 mm 0 125 in nominal 28 1 5 mm d 09 in Operating temp Temp coefficient Temp coefficient max Contains temp pa mae a in max max zero calibration sensor a 114 6 4 mm 4 5 0 25 in 10 C to 75 C 0 06 C No Brass Stem Axial Probes for Model 410 Gaussmeter rigid Se stem Active area in Frequency Accuracy Moni length 1 m mm gt 2 in approx 22 in dia ix MEN j 1mm J 1 3 mm 0 050 0 36 dia 4 amp 4 L E to sensor L in Active area Stem material Frequency Usable full Accuracy Operating Temp Temp Contains temp in range scale ranges rdg temp range coefficient coefficient sensor at 25 C max zero max calibration MSA 2202 410 2 20 125 0 005 x 0 005 Brass DC MC 2 s 0 1 G C 0 06 2204 410 4 30 125 www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Gaussmeter Hall Probes Transverse Transverse Probes cable length 2 m 6 5 ft ME 64 mm 2 5 in LN 9 1 0 76 mm 0 36 0 030 4 wW Contains temp sensor Usable full scale ranges Temp coefficient max calibration Corrected accuracy rdg Operating temp range Temp coefficient max zero Stem material Active area in L in T in
68. certificate and data Calibration data for a new Model 480 Rack mount kit for mounting one Model 480 in 483 mm 19 in rack Rack mount hit for mounting two Model 480s in 483 mm 19 in rack CAL 480 CERT CAL 480 DATA CAL N8 DATA RM RM 2 Coils see pages 46 and 47 for more information FNT 6R04 100 100 cm search coil FNT 5P04 30 30 search coil FH 2 5 Helmholtz coil 64 mm 2 5 in ID FH 6 Helmholtz coil 152 mm 6 in ID FH 12 Helmholtz coil 305 mm 12 in ID FCBL 6 User programmable cable with PROM 1 5 m 5 ft long All specifications are subject to change without notice Custom probes coils fixtures available consult Lake Shore fax 614 818 1600 e mail info lakeshore com EJ Selecting a Gaussmeter Hall Probe Gaussmeter Hall Probes Characteristics to be Considered when Selecting a Probe Proper selection of a Hall probe is probably the most difficult and important decision to make after choosing a gaussmeter Using the improper probe could lead to less than optimal accuracy or even worse costly damage Lake Shore offers a complete line of gaussmeter probes to work in a variety of magnetic measurement applications Lake Shore probes are factory calibrated for accuracy and interchangeability Factory calibrated probes feature a programmable read only memory PROM in the probe connector so that calibration data can be read automatically by the instrument The next few pages will help you make an in
69. cluded with the Model 475 serial 5 232 parallel IEEE 488 Both allow setup of all instrument parameters and read back of measured values The maximum reading rate over the interface is nominally 30 readings per second during field control LabVIEW driver for the Model 475 is provided Application software is not included with the FCP 614 891 2244 fax 614 818 1600 Following are examples of the various display configurations and setup screens The display configured to turn the field control On Off The display configured to enter the field control setpoint The display configured to enter the field control P value The display configured to enter the field control value The display configured to enter the field control ramp rate The display configured to set the field control slope limit The display configured to show the field control setpoint and current field value when field control 1s active e mail info lakeshore com Field Controlled Electromagnet Platforms Specifications The features and specifications of Lake Shore field control platforms are consistent with their individual components and are summarized below Detailed component specifications are included in their individual sections Typical system performance illustrates how the components behave as a system Field stability values were measured on a FC EM7 system Results will vary with magnet size magnet
70. d excursions RC EM7 200230 60 CE 5045 W 60 Hz recirculating chiller to high fields It may be appropriate to choose RC EM7 200 50 CE 4540 W 50 Hz recirculating chiller a larger chiller for higher duty cycle needs RC EM7 400 50 CE 4540 W 50 Hz recirculating chiller when large magnetic fields must be maintained continuously Please consult Lake Shore for an appropriate chiller for these applications All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Product Description The electromagnet field control platform FCP integrates hardware and firmware components to form a variable magnetic field platform that can be utilized independently or as the foundation for a user designed magnetic measurement system The FCPs include a Lake Shore electro magnet a bipolar magnet power supply a DSP gaussmeter with integrated field control firmware and a gaussmeter Hall probe and holder www lakeshore com Lake Shore Cryotronics Inc EN Field Controlled Electromagnet Platforms Field Controlled Electromagnet Plattorms Lake Shore FCPs can be configured to accommodate specific user requirements based on magnetic field strength field uniformity sample size and custom measurement applications The platforms are ideally suited for integration into user designed magnetic test systems for applications includ
71. dback control capability directly into the Model 475 DSP gaussmeter eliminating the need for a separate computer with redundant software control The Model 475 includes the electronics and firmware to perform closed loop digital PI field control of the electromagnet and magnet power supply cable length up to 16 ft d L B i T me p 614 891 2244 0 36 in zb 40 030 in 614 818 1600 lt Ae i le e mail info lakeshore com Control Features The Model 475 attempts to keep the magnetic field density at exactly the user entered control setpoint expressed in gauss tesla oersted or ampere meter To do this the Model 475 uses feedback from the gaussmeter Hall probe to calculate and actively adjust the control analog output In order to maximize control stability the Model 475 updates the analog output every 33 ms The result is an internal PI controller providing peak to peak field stability of 0 5 G When the setpoint ramp is enabled the instrument will start ramping from the current field reading rather than the current setpoint based on the user settable P and I settings In addition the 475 can be configured to ramp the control setpoint from the present field reading to a new value by using a smooth linear transition in field rather than the step response PI control Open loop field control is also possible by using the Model 475 analog output in manual out
72. e in the desired measurement range High Stability HST 1 HST 2 HST 3 HST 4 With a high field range of up to 350 35 high stability probes are used when fields exceed the limit of other probe types Their low field performance is slightly degraded with a minimum sensitivity of 50 mG 5 uT HST probes are also inherently more temperature stable than other probes and should be used when large temperature fluctuations are expected They are offered in a variety of stem geometries High Sensitivity HSE and HSE 1 High sensitivity probes are the most common for general purpose field measurement They operate effectively in fields up to 35 3 5 T with excellent sensitivity At low fields their sensitivity can be as low as 5 mG 0 5 uT Convenient for many applications because of their relatively small active area HSE probes are offered in the same geometries as HST probes Ultra High Sensitivity UHS and UHS 1 Low magnitude large volume fields are most effectively measured with ultra high sensitivity probes which have unbeatable low field resolution to 0 02 mG 2 nT UHS probes or gamma probes are ideal for measuring fringe fields or variations in the earth s field They should never be used in fields over 30 G UHS probes are larger than other probes and have a very large active area making them impractical for small volume fields or tight spaces Radiation Effects on Gaussmeter Hall Probes The HST and H
73. easily used with the Model 480 The Model 480 allows the user to save parameters for up to 10 existing coils probes and quickly switch between them Lake Shore also offers several sensing coils and probe assemblies for use with the Model 480 that have several conveniences They are factory calibrated for accuracy and interchangeability Calibration data is loaded into memory in the probe connector so it does not have to be entered by the user Special coil assemblies are also available and can be designed to meet customer specifications FH Series Helmholtz Coils Lake Shore coils can be used with the Model 480 fluxmeter as well as with other fluxmeters When used with a Model 480 fluxmeter calibration and set up data are automatically loaded into the instrument These probes and coils are accurately calibrated using field standards maintained at Lake Shore Most standards are traceable to physical standards such as a coil or probe of carefully controlled dimensions or in some cases to proton resonance The coil constants are measured on the basis of the field generated by a current through the coil See pages 46 and 47 for more information about available Helmholtz and search coils fax 614 818 1600 e mail info lakeshore com Model 480 Specifications Measurement Number of inputs 1 Input type 2 lead ground referenced Input resistance 100 or 10 Maximum operating input voltage 60 V
74. ected Connector BNC Corrected analog output Configuration Voltage output generated by DAC Range 3 V Scale 3 V full scale on selected range Resolution 1 25 mV Update rate 5 updates s Accuracy 0 35 Minimum load resistance 1 short circuit protected Connector BNC General Ambient temperature 15 to 35 C at rated accuracy 5 to 40 C with reduced accuracy Power requirement 100 120 220 240 VAC 5 10 50 or 60 Hz 20 VA Size 216 W x 89 mm H x 318 mm D 8 5 in x 3 5 in x 12 5 in half rack Weight 3 kg 6 6 Ib Approval CE mark Ordering Information Part number Description 421 Model 421 gaussmeter plus one probe 421 MXX XXXX XX Model 421 gaussmeter with standard probe specify selected probe number for see list on page 20 Specify line power option VAC 100 100 VAC includes U S power cord VAC 120 120 VAC includes U S power cord VAC 220 220 VAC includes universal Europe power cord VAC 240 240 VAC includes universal Europe power cord VAC 120 ALL 120 VAC includes U S amp universal Europe power cords amp all fuses Accessories included 106 741 115 006 115 007 4060 MAN 421 Terminal block for relay outputs Detachable line cord U S Detachable line cord Europe Zero gauss chamber Model 421 user manual Accessories available 106 741 Terminal block mating connector 3 pin connector for alarm relay CAL 421 CERT Instrument recalibration with certi
75. ed Metal stems do have one drawback eddy currents are generated in them when they are placed in AC fields These eddy currents oppose the field and cause measurement error The error magnitude is proportional to frequency and is most noticeable above 800 Hz fax 614 818 1600 e mail info lakeshore com EN EJ Selecting a Gaussmeter Hall Probe Non metal Stem Non metal stems are required for higher frequency AC fields and for measuring pulse fields fiberglass epoxy is a common non metal stem material Alternatively the Hall effect sensor can be left exposed on its ceramic substrate which provides less protection for the sensor Eddy currents do not limit the frequency range of these non conductive materials but other factors may Please note No gaussmeter probe type is suitable for direct exposure to high voltage Gradient Probe selection would be easier if all fields were large and uniform but most fields are limited in volume and contain gradients changes in magnitude Hall effect probes measure an average magnitude over their active area making it necessary to understand the relationship between active area and field gradients Severe field gradients are always experienced as the active sense element is moved away from a permanent magnet pole making it important to know the distance between the active area and probe tip The distance between probe tip and active area is specified for axial probes but is less easi
76. ed or bolt on mounting that provides easy pole cap exchange The EM series incorporate water cooled coils and precision yokes made of magnetically soft ultra pure steel assuring precise pole cap alignment as well as excellent field homogeneity and stability The yoke is oriented at a 45 angle and the EM4 yoke at a 40 angle for optimum air gap accessibility The EM4 series are also compact in size and have steel eyebolts permitting convenient bench top mounting to optical tables 614 891 2244 fax 614 818 1600 Model EM7 HV Electromagnet The EM series coupled with a Lake Shore magnet power supply MPS form a versatile laboratory electromagnet characterization system This system with true bipolar MPS power output provides rapid uniform magnetic field ramping and field reversal to avoid discontinuities that occur during zero crossover when using unipolar power supplies Larger magnets are also available from Lake Shore e mail info lakeshore com Electromagnets Specifications Typical Field Uniformity EM7 Magnet Typical Field Uniformity EM4 Magnets Magnet configuration Uniformity 1 cylindrical volume Magnet configuration Uniformity 1 cylindrical volume Pole cap Air gap over 1 cm Diameter Length Pole cap Air gap over 1 cm Diameter Length mm in mm in mm in mm in mm in mm in mm in 102 4 0 51 2 0 0 15 18 0 7 51 20 51 2 0 16 0 6 0
77. ement resolution RMS noise floor Indicated by value in above table for shorted input Display resolution Indicated by number of digits in above table 55 digit 494 9101 3 digit resolution resolution resolution 3 dB bandwidth 1 Hz 10 Hz 100 Hz Time constant 18 30 rdg s 30 rdg s Max reading rate 10 rdg s DC accuracy 0 075 of reading x 0 00596 of range DC temperature coefficient 0 01 of reading 0 003 of range C AC RMS Measurement Probe type 434 digit ranges resolution HST Probe 300 kG 000 01 kG 35 kG 00 001 kG 3 5 KG 0 0002 kG 350 G 000 02 G 35 G 00 020 G HSE Probe 35 kG 3 5 kG 350 G 35 G 35G UHS Probe 00 001 kG 0 0001 kG 000 02 00 002 G 0 0020 G 35 6 00 001 G 396G 0 0002 G 350 mG 000 02 mG 35 mG 00 020 mG Measurement resolution RMS noise floor Indicated by value in above table for shorted input Display resolution Indicated by number of digits in above table Max reading rate 30 rdg s AC accuracy 1 of reading gt 1 of full scale range 10 Hz to 20 kHz AC frequency range 10 Hz to 1 kHz narrow band mode 135 Hz to 20 kHz wide band mode www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Peak Measurement Probe type ranges HST probe 350 kG 35 kG 3 5 KG 350 G 35 G HSE probe 35 kG 3 5 KG 350 G So 3 5 G UHS probe 35 G 43 4 digit resolution 000 01
78. er must be used to shield the probe sensing area from external field The 4065 should be ordered with the gamma probe and can be used with the other probes Bore 13 mm diameter x 51 mm 0 5 in diameter x 2 in 19 mm diameter x 279 mm 0 75 in diameter x 11 in 4060 Standard 33 mm x 33 mm x 61 mm 1 3 in x 1 3 in x 2 4 in 58 mm x 53 mm x 305 mm 2 3 in x 2 1 in x 12 in 4065 Large for gamma probe 4060 Zero Gauss Chamber 4065 Zero Gauss Chamber front view 19 mm 0 8 in 5 D diamet i side view N iameter opening 58 mm 33 mm 2 3 1 3 3m 53mm 61 mm 24 in 2 1 in 305 mm 12 in depth of opening 279 mm 11 in 2 o side view Ordering Information Part number Description Extension cables HMPEC 10 415 455 probe extension cable with EEPROM 10 ft calibrated HMPEC 10 U 475 455 probe extension cable with EEPROM 10 ft uncalibrated HMPEC 25 475 455 probe extension cable with EEPROM 25 ft calibrated HMPEC 25 U 475 455 probe extension cable with EEPROM 25 ft uncalibrated HMPEC 50 475 455 probe extension cable with EEPROM 50 ft calibrated HMPEC 50 U 475 455 probe extension cable with EEPROM 50 ft uncalibrated HMPEC 100 475 455 probe extension cable with EEPROM 100 ft calibrated HMPEC 100 U 475 455 probe extension cable with EEPROM 100 ft uncalibrated MPEC 10 460 450 421 calibrated probe extension cable 10 ft
79. er temperature Connector Two lugs with 6 4 mm 0 25 in holes for M6 or 0 25 in bolts Output Programming Internal current setting Resolution 0 1 mA 20 bit Settling time 600 ms for 1 step to within 1 mA of internal setting Accuracy 10 mA 0 05 of setting Operation Keypad computer interface Protection Programmable current setting limit Internal current ramp Ramp rate 0 1 mA s to 99 999 A s compliance limited Update rate 23 7 increments s Ramp segments 5 Operation Keypad computer interface Protection Programmable ramp rate limit External current programming Sensitivity 10 V 70 A Resolution Analog Accuracy 10 mA 1 of setting Input resistance 20 Operation Voltage program through rear panel can be summed with internal current setting Limits Internally clamped at 10 1 V and bandwidth limited at 40 Hz to protect output Connector Shared 15 pin D sub Readings Output current Resolution 0 1 mA Accuracy 5 mA 0 05 of reading Update rate 2 5 rdg s display 10 rdg s interface Output voltage at supply terminals Resolution 1 mV Accuracy 5 mV 0 05 of rdg Update rate 2 5 rdg s display 5 rdg s interface www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Model 642 Electromagnet Power Supply Front panel Display type 8 line by 40 character graphic vacuum fluorescent module Display readings Output current output voltage and internal water tempe
80. erformance The exclusive DSP algorithms free the Model 455 from the Zero Probe Probe Peak Measurement Mode Pulsed fields are measured in Peak mode which is a natural extension of the high speed data acquisition necessary for DSP operation Fast instrument sample rates permit capture of positive and negative transient fields as narrow as 50 us pulse widths The peak reading can be held for an unlimited length of time with no sag This is ideal for most magnetizers and other fast pulse applications The Model 455 can also be configured to follow the peak of a periodic waveform for evaluation of crest factor The Probe Connection The Model 455 is only half of the magnetic measurement equation For the complete solution Lake Shore offers a full complement of standard and custom Hall effect probes in a variety of sizes and sensitivities One of ten common standard Hall probes is included with the Model 455 See page 13 for details on the ten Hall probes you can choose to get with the Model 455 limitations of conventional RMS conversion hardware and provide for an excellent dynamic range resolution and frequency response 614 891 2244 fax 614 818 1600 e mail info lakeshore com Measurement Features The Model 455 offers a variety of features to enhance the usability and convenience of the gaussmeter Autorange In addition to manual range selection the instrument automatically chooses an appropri
81. ero calibration at 25 C 9 94 0 76 mm 0 36 0 030 in diam for Models 475 and 455 HST 3 0 05 4 25 di 0 040 dia Stainless 35 G 350 G 0 HMCT 3160 WN 2n Mice me 2 0 13G C 100K 0 04 350 kG 80K 0 09 for Models 460 450 and 421 0 40 Mcrsicown iua 0254 0210 o040dia Stainless ut aye 2 t0 15Kt0 0 70 RS 0 010 0 050 steel 400 Hz 30 kG 300 KG 100 kG 350 K 1 5K 1 05 Tangential Probes length 2 m 6 5 ft 76 mm 3 in L t p aly 9 1 0 8 mm 0 36 0 030 in diam Ww cr L in T in W in Active Stem Frequency Usable full Corrected Operating Temp coefficient Temp coefficient Contains area in material range scale ranges accuracy temp range max zero max calibration temp sensor rdg at 25 C for Models 475 and 455 HSE i 0 020 dia 3 5 35 0 25 to HMNTAN DQ02 TH 0 approx Plastic 350 G 3 5 KG 20 KG 35 kG 0 02 C for Models 460 450 and 421 DC and HSE 1 MNTAN DQ02 TH 9 011 026 0 030 0 020dia plaste 10Hzto 306 3006 0 060 max max 0 005 approx 400 Hz 3 kG 30 kG 0 25 to 0 C to 20kG 75 C 0 05 www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Gaussmeter Hal
82. erse Transverse Probes for Model 410 Gaussmeter 114 46 4 mm 4 4 mm 0 175 in 1 1 0 045 in 3 2 mm 0 125 in A nominal diameter EH flexible stem ii mm flexible stem 1 40 06 in L in Active area Stem material Frequency Usable full Accuracy Operating in range scale ranges rdg temp range at 25 C MST 410 26 025 0 005 0 005 08 pasie 2006 26 Contains temp coefficient coefficient sensor max zero max calibration 0 06 C tubing 20 kG 75 Brass Stem Transverse Probes for Model 410 Gaussmeter rigid brass stem 5 6 mm 0 22 in dia max 1 3 0 050 1 max to sensor mm 0 36 in dia cable length 1 m 39 lt 51 mm in bw Temp Temp Contains temp coefficient coefficient sensor max zero max calibration Active area Stem material Frequency Usable full Accuracy Operating in range scale ranges rdg temp range at 25 C MST 9P02 410 2 3D 125 4n 0 005 x 0 005 Brass DC E cin 2 2 MST 9P04 410 4 0 125 T www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 0 1 0 06 C No e mail info lakeshore com Gaussmeter Hall Probes Gamma 2 Axis and 3 Axis cable length SEP L Gamma Probes 2m 65f Small variations in or low values of large volume magnet
83. f full scale range 20 us or longer pulse width Peak accuracy 20 kHz to 50 kHz 5 of rdg gt 1 of full scale range 20 5 or longer pulse width Peak frequency range periodic mode 50 Hz to 5 kHz Peak frequency range pulse mode 5 Hz to 50 kHz Temperature Measurement Temperature range Probe dependent typically 0 C to 75 C Measurement resolution 0 01 C Temperature display resolution 0 01 C Electronic accuracy 0 7 C Front Panel Display type 2 line x 20 character vacuum fluorescent with 9 mm high characters Display resolution 5 digits Display update rate 5 rdg s Display units gauss tesla T oersted and ampere per meter A m Units multipliers m M Display annunciators DC DC measurement mode RMS AC RMS measurement mode PK Peak measurement mode Max hold value MN Min hold value SP Relative setpoint value CSP Field control setpoint value LED annunciators Relative reading mode Alarm active Remote IEEE 488 operation Keypad 22 full travel keys Front panel features Display prompts front panel lockout and brightness control fax 614 818 1600 e mail info lakeshore com Interfaces RS 232C Baud 9600 19200 38400 and 57600 Update rate 30 rdg s ASCII Software support LabVIEW driver Connector 9 pin D style DTE configuration IEEE 488 2 Capabilities SH1 AH1 T5 L4 SR1 RL1 PPO DC1 DT1 CO and E1
84. fax 614 818 1600 e mail info lakeshore com www lakeshore com Electromagnets Continuously adjustable poles allow rapid air gap changes to suit individual experiments assuring magnet versatility Exceptional field intensities achieved with cylindrical or tapered pole caps Water cooled coils provide excellent field stability and uniformity Removable pole caps facilitate variable pole face configurations and easy pole cap exchange Accurate pole alignment by precise construction of the air gap adjustment mechanism The EM7 yoke is oriented at a 45 angle and the EM4 yoke at a 40 angle for optimum air gap accessibility Compact size of the EM4 permits convenient bench top mounting Optional optical access pole caps available Lake Shore Cryotronics Inc Electromagnets EM7 HV Model EM4 HVA Electromagnet with optional stand The Lake Shore EM4 and EM7 series electromagnets EM produce variable magnetic fields with a variety of air gap and pole cap configurations The EM series are ideally suited for integration into customer designed magnetic test platforms for applications including magneto optical studies magnetic hysteresis studies in line annealing Hall effect studies susceptibility measurements spin magnetic resonance demonstrations and biological studies The HV series feature continuously adjustable poles allowing rapid air gap changes to suit individual experiments and thread
85. fiberglass with its exposed Hall sensor Note never fasten a probe stem to another object If a probe is clamped always apply the clamp to the handle Polarity of Transverse Probes The output will be positive when the direction of the flux density vector is into the Lake Shore logo 1 the logo is toward the north pole Polarity of Axial Probes Except in rare special cases the output will be positive when the field vector is into the tip of the probe Definitions A Distance from the tip of the probe to the center line of the active area B Magnetic flux density vector positive gaussmeter reading fax 614 818 1600 e mail info lakeshore com Axial Probes E 00 m n for Models 475 and 455 Gaussmeter Hall Probes Axial EJ cable length 2 m 6 5 ft EE 64 mm 2 5 in 9 1 0 76 mm 0 36 0 030 in diam 2 D in A in Stem material Active area in range Frequency Usable full scale Contains temp sensor Corrected accuracy rdg at 25 C Operating temp range C Temp coefficient max zero Temp coefficient max calibration ranges 2 0 125 TTR RCM 40125 0 060dia 0 001 0 005 DC to 0 25 to TURES 8 0 125 0 003 0003 400 Hz HST 4 10 kG 18 0125 Aluminum 35 G 350 G
86. ficate CAL 421 DATA Instrument recalibration with certificate and data CAL N5 DATA Calibration data for a new Model 421 RM Rack mount kit for one gt gaussmeter in 483 mm 19 in rack RM 2 Rack mount kit for two 2 gaussmeter in 483 mm 19 in rack All specifications are subject to change without notice Custom probes available consult Lake Shore fax 614 818 1600 e mail info lakeshore com Handheld Resolution to 3 digits 1 part out of 2000 Ranges Autoranging 200 2 kG and 20 kG ranges Accuracy 2 of reading Frequency response DC 20 Hz to 10 kHz Front panel key functions include Max Hold Relative Alarm Filter Custom liquid crystal display Max Hold The largest field magnitude measured since the last reset is displayed with the Max Hold function Filter When the field being measured is noisy using the Filter function will average readings to produce a more stable display Alarm An audible alarm is sounded and the display indicator flashes when the measured field is higher than the keypad entered alarm point Zero Probe Used to eliminate probe offsets and small external fields Relative Reading Used to show small variations in large background fields When activated Relative function displays deviation from a specific setpoint Autoranging Automatically selects the appropriate range Memory Hold On power down
87. field value generated by DAC Range 10 V Scale User specified defaults same as voltage output 2 Resolution 16 bit 0 3 mV Update rate 30 updates s Accuracy 2 5 mV Noise 0 3 mV RMS Minimum load resistance 1 short circuit protected Connector Shared 25 pin 1 0 connector www lakeshore com Lake Shore Cryotronics Inc Model 455 DSP Gaussmeter General Ambient temperature 15 C to 35 C at rated accuracy 5 C to 40 C with reduced accuracy Power requirement 100 120 220 and 240 VAC 6 10 50 Hz or 60 Hz 20 VA Size 216 W x 89 mm H x 318 mm D 8 5 in x 3 5 in x 12 5 in half rack Weight 3 kg 6 6 Ib Approval CE mark Probes and Extensions Probe compatibility Full line of standard and custom probes available not compatible with Model 450 421 probes see page 13 for included additional standard probes available Hall sensor compatibility Front panel programmable sensitivity and serial number for user supplied Hall sensor Extension cable compatibility Calibrated or uncalibrated probe extension cables with an EEPROM are available from 10 ft to 100 ft Lake Shore calibrated extension cables maintain the same accuracy as the Model 455 probe The uncalibrated version requires the operator to load the matching probe data file into the cable PROM directly from the Model 455 front panel Additional errors caused by the uncalibrated extension cables are 0 02 of field reading error and 1 C
88. formed probe choice If you have additional questions contact Lake Shore and our experts can guide you through the selection process Lake Shore can also custom design a probe to meet your specific application requirements Use these guidelines to help choose a probe Choose a probe to match the application Do not buy more accuracy field range or fragility than is actually needed B The thinner a probe the more fragile it is Try to avoid the temptation to select an easily damaged probe based on a possible but not required future application For instance avoid using an exposed device probe such as a model MFT 3E03 type for general field measurements Once a stem or sensor has been damaged the probe is not repairable Usable Full Scale Ranges vs Probe Type for Model 475 and 455 HST 3 HST 4 UHS 356 Metal enclosed probes such as the MMT 6J08 and MMA 2508 types offer good protection to the Hall sensor Brass stem transverse probes are even more rugged than the aluminum type probes and offer the greatest amount of protection unu Be cautious about using aluminum stemmed transverse probes such as the MMT 6J08 type where AC magnetic fields are to be measured Eddy currents in the stem material can affect reading accuracy A superior choice for AC measurements would be the MNT 4E04 type fiberglass epoxy stem probes Several stem lengths are offered for each probe type User preference or
89. g at 25 C range max zero max calibration sensor for Model 460 ONLY MMY 1802 UH 2 0 125 0 25 to 20 kG 25 10 Aluminum 068910 306 3006 o 5 trom20kGto 10 1040 gt 0090 0 0 015 C Yes MMY 1818 UH 18 025 400 Hz 221 he MMY 1836 UH 36 0 25 3 Axis Probes 5 to end all yr T 83 mm 3 y ahs vam end view 8 63 in ae B Bz 12 7 mm 4 6 E 12 7 mm 0 5 in diameter 0 5 in u 0 18 in 8 9 mm 0 35 in square square L in Stem Frequency Usable full scale Corrected accuracy Operating temp Temp coefficient Temp coefficient Contains temp material range ranges rdg at 25 C range max zero max calibration sensor for Model 460 ONLY MMZ 2502 UH 2125 0 125 MMZ 2508 UH 8125 0125 T 2596 to 3 ee 1e 153 0153 Aluminum Dani 30G 3006 0 5 from20kGto 10 Cto40 C 0 09 GC 0 015 C Yes MMZ 2518 UH 18125 0 25 to 400 Hz 2 A MMZ 2536 UH 36 125 0 25 MMZ 2560 UH 60 375 0 5 The sensors at the ends of the multi axis probes are quite fragile and susceptible to damage Lake Shore offers an assortment of brass covers for probe protection during use with DC fields Consult Lake Shore for model numbers and pricing www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Ordering Information Axial Probes
90. gap and system setup ase eC LL qp Hp Field stability peak to peak 0 5 G at 0 G and 1 kG 1 Control type Closed loop Control output resolution 0 001 of full scale output Control output update period 33 ms ee See page 56 for field plots and detailed specifications Frame gap uM H frame variable gap mE EN Nominal coil 0 50 100 0 25 Q Coil connection Series Parallel d Series Pole size MEN mE u Customer specified _ mu Air gap Up to 102 mm 4 in continuously variable Up
91. ibration Data and Certificates CAL N1X1 DATA Calibration data for new Model 410 probe Calibration data for new 1 axis Hall probe Calibration data for new 2 axis Hall probe Calibration data for new 3 axis Hall probe Recalibration Data and Certificates 1 axis probe for 410 recalibrated with certificate 1 axis probe for 410 recalibrated with certificate and data 1 probe for 460 450 421 recalibrated with certificate 1 5 probe for 460 450 421 recalibrated with certificate and data 1 probe for 475 455 recalibrated with certificate 1 axis probe for 475 455 recalibrated with certificate and data 2 axis probe for 460 recalibrated with certificate 2 axis probe for 460 recalibrated with certificate and data 3 axis probe for 460 recalibrated with certificate 3 axis probe for 460 recalibrated with certificate and data Gamma probe for 460 450 421 recalibrated with certificate Gamma probe for 460 450 421 recalibrated with certificate and data Gamma probe for 475 455 recalibrated with certificate Gamma probe for 475 455 recalibrated with certificate and data 614 891 2244 fax 614 818 1600 e mail info lakeshore com Extension Cables To maintain probe accuracy probes and extension cables for Models 460 450 and 421 must be calibrated together at Lake Shore When ordering an extension cable and more than one probe it is necessary to specify with which probe the cable will be used It should be noted that probes will
92. ic fields such as that of the earth or fringe fields around large i solenoids can be measured with these ultra high sensitivity 7 ee _ probes Resolutions of several gammas 10 6 to tens of aive senina _ gammas are available depending on the mating gaussmeter length 79 38 mm 3 125 in Application is optimum when fields are homogeneous over lengths greater than 1 ft The active sensing length of the gamma probe is ar approximately 3 125 in active volume For absolute zero a 4065 zero gauss chamber is required The standard 4060 zero gauss chamber is too small for the gamma probe W in T in A in L in Frequency Usable full scale Corrected accuracy Operating Temp coefficient Temp coefficient max Contains range ranges rdg at 25 temp range max zero calibration temp sensor for Models 475 and 455 UHS HMLA 5006 HJ 22 DC to 400 Hz 35 mG 350 mG 2 1 0 02 a 35 6 356 for Models 460 450 and 421 0 25 DC and UHS 1 MLA 5006 HJ NS 0 5 22 5 7 10 Hz to 300 mG 3 G id 400 Hz 306 0 5 0 C to 450 460 0 02 926 75 1 mac 421 0 05 2 Axis Probes n end f 4 6 mm 0 18 in diameter 12 7 mm 0 5 in diameter L in Stem material Frequency range Usable full scale Corrected accuracy Operating temp Temp coefficient Temp coefficient Contains temp ranges rd
93. in MNA 1908 VG Non metallic axial 0 187 diameter x 8 in HMNA 2518 VR HF Non metallic axial 0 25 diameter x 18 in Model 460 450 and 421 Flexible Axial Probes Model 475 and 455 Flexible Axial Probes MFA 1815 VH Probe flexible axial 0 180 diameter x 15 in HMFA 1815 VR Probe flexible axial 0 180 diameter x 15 in Model 460 450 and 421 Cryogenic Axial Probes Model 475 and 455 Cryogenic Axial Probes MCA 2560 WN Probe cryogenic axial 0 25 diameter x 60 in HMCA 2560 WN Probe cryogenic axial 0 25 diameter x 60 in Model 410 Axial Probes MSA 410 Probe axial for the 410 Model 410 Brass Stem Axial Probes MSA 2202 410 Probe brass axial for the 410 2 in MSA 2204 410 Probe brass axial for the 410 4 in All specifications are subject to change without notice www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com dM Gaussmeter Hall Probes Ordering Information Transverse Probes Model 475 and 455 Transverse Probes HMNT 4E02 VF HMNT 4E04 VF HMNT 4E02 VR HMNT 4E04 VR HMMT 6J02 VF HMMT 6J04 VF HMMT 6J08 VF HMMT 6J18 VF HMMT 6J02 VR HMMT 6J04 VR HMMT 6J08 VR HMMT 6J18 VR Probe non metallic transverse 0 04 x 0 14 x 2 in Probe non metallic transverse 0 04 x 0 14 x 4 in Probe non metallic transverse 0 04 x 0 14 x 2 in Probe non metallic transverse 0 04 x 0 14 x 4 in Probe metal transverse 0 06 x 0 18 x 2 Probe metal transverse 0 06 x 0 18 x 4 in Probe
94. ing magneto optical studies in line annealing Hall effect studies susceptibility measurements spin magnetic resonance demonstrations B H curves and precision sensor calibration Gaussmeter Hall Probe System Features The FCP electromagnets feature continuously adjustable air gaps allowing rapid air gap changes to suit individual experiments They have water cooled coils and precision yokes made of magnetically soft ultra pure steel assuring precise pole cap alignment as well as excellent field homogeneity and stability The H yoke configurations are oriented at a 45 angle for optimum air gap accessibility The electromagnets also incorporate compact size with steel eyebolts permitting convenient bench top mounting to optical tables The FCP magnet power supplies provide stable current regulation and true bipolar power output The bipolar output allows rapid uniform magnetic field ramping and field reversal avoiding discontinuities that occur during zero crossover when using unipolar power supplies The bipolar output also eliminates the need for current reversal contactors or relays The magnet power supplies are CE compliant and include features such as automatic power output disable upon failure detection operation as a current or voltage source and operation in either manual or remote mode Unlike other commercial solutions the Lake Shore FCP system incorporates closed loop field control also called fee
95. int sensitivity data to the cable EEPROM through the gaussmeter serial port This program must be installed on an IBM PC compatible computer A null modem cable or adapter is required For the Model 475 and 455 Gaussmeters 2 m 6 ft and 6 1 m 20 ft cables are available The Model 475 and Model 455 offer the convenience of front panel programming No external computer is required The Hall generator serial number and single point sensitivity are directly entered using the keypad Ordering Information Part number MCBL 6 MCBL 20 HMCBL 6 HMCBL 20 Description 1 8 m 6 ft long cable for Model 460 450 and 421 6 1 m 20 ft long cable for Model 460 450 and 421 1 8 m 6 ft long cable for Model 475 and 455 6 1 m 20 ft long cable for Model 475 and 455 All specifications are subject to change without notice fax 614 818 1600 e mail info lakeshore com Magnetic Field Sensors Axial Hall Generators HGA 2010 2 29 mm E 09 in 31 75 mm iL max 127 12 7 mm 5 0 5 in 1 25 in 0 175 in 1 hoo lt gt active area HGA 2303 4 95 mm diameter max 3 18 mm 0 125 Description Active area approx 254 mm 10 in min 4 45 mm 0 175 in n mw sox 4 24 mm 0 167 in diameter max HGA 2010 HGA 2302 General purpose axial General purpose axial high sensitivity 3 30 mm 0 13 in diameter 0 51 x 1 02 mm 0
96. ipping weight 252 kg 555 Ib with EM4 HVA magnet Shipping dimensions 0 91 mW x 0 61 mD x 0 76 m H 36 in W x 24 in D x 30 in H e mail info lakeshore com EN EJ Electromagnets Ordering Information 102 mm 4 in Electromagnets EM4 HVA EM4 HVA 0 EM4 HVA S Accessories included H yoke variable gap up to 102 mm 4 in H yoke variable gap up to 102 mm 4 in H yoke variable gap up to 102 mm 4 in 4 5 0 yoke variable gap up to 102 mm 4 in without stand with optical access with stand with optical access amp stand 1 set of pole caps 4 2 51 2 in pole standard different size be Specified at time of order corresponding pair of lead screws flow switch 3 m 10 ft 4 AWG cables Accessories available EM4 1PB Pole cap 1 pair 102 mm 4 in dia tapered to 25 mm 1 in face EM4 2PB Pole cap 1 pair 102 mm 4 in dia tapered to 51 mm 2 in face EM4 3PB Pole cap 1 pair 102 mm 4 in dia tapered to 76 mm 3 in face EM4 4PB Pole cap 1 pair 102 mm 4 in dia with 102 mm 4 in face EM4 1PB 0 1 2 Pole cap 1 pair 102 mm 4 in tapered to 25 mm 1 in face 3 2 mm 1 in dia bore for optical access through one pole EM4 1PB 0 2 2 Pole cap 1 pair 102 mm 4 in tapered to 25 mm 1 in face 3 2 1 in dia bore for optical access through both poles EM4 1PB 0 1 4 Pole cap 1 pair 102 mm 4 in tapered to 25 mm 1 in face 6 4 mm 1 4
97. ire cable assembly used with RS 232C interface cable is 4 3 m 14 ft long RJ 11 to DB 25 adapter connects computer to RS 232C port RJ 11 to DE 9 adapter connects computer to RS 232C port IEEE 488 interface cable connects customer supplied computer to IEEE 488 interface cable is 1 m 3 3 ft long Instrument recalibration with certificate Instrument recalibration with certificate and data Calibration data for a new Model 460 Rack mounting shelf to attach one Model 460 gaussmeter to a 483 mm 19 in rack mount space All specifications are subject to change without notice Probes ordered separately see page 26 Custom probes available consult Lake Shore 614 891 2244 fax 614 818 1600 e mail info lakeshore com Resolution to 434 digits 1 part out of 30 000 Large vacuum fluorescent display Serial interface Analog voltage outputs Sort function displays Pass Fail message Alarm with relay Product Description The Model 421 Hall effect gaussmeter is Lake 5 5 answer to the need for high performance at an affordable price in the rapidly changing permanent magnet industry The Model 421 offers faster update higher resolution and more repeatable flux density measurements to meet the demands of manufacturing quality assurance and R amp D As an added advantage the Model 421 includes one of Lake Shore s Hall probes Performance High performance instrumentation is no l
98. ize the integrators low drift characteristics The IEEE 488 and serial computer interfaces included with the 480 allow automated data taking AC Magnetic Fields Sensing coils are sensitive to AC magnetic fields but many conventional integrating fluxmeters can not measure AC fields The Model 480 has an AC mode that enables it to measure fields over a wide frequency range using simple sensing coils Applications are limited to field volumes as large as or larger than the coil but for some it is an inexpensive way to make low drift AC field measurements Drift Adjustment Adjusting or nulling the drift of an analog integrator wastes time it can be the only unpleasant part of using an integrating fluxmeter Lake Shore innovation brings some relief The Model 480 has a built in drift algorithm that continually adjusts drift when the instrument and coil are idle It is ready when you are to make precision low drift measurements The adjustment algorithm has no effect during flux integration Manual drift adjustment is also available fax 614 818 1600 e mail info lakeshore com Model 480 Fluxmeter Model 480 Rear Panel Line input assembly Serial 0 interface IEEE 488 interface Terminal block for relays and analog signals Coil input for user coils oo 80086 Probe input for Lake Shore probes 4 Wotage 100200 OSATEN 0250126 53480 40 220040 O25 ATPEUV 2 IEEE 488 INTERFACE
99. l 668 flow rate 8 L min 2 1 gal min pressure drop 0 14 MPa 20 psi Cooling water connections Model 665 and 668 inch NPT female thread inch NPT male to 10 mm 3 8 in hose barb included Operating environment Ambient temperature 10 C to 30 C 50 F to 86 F Humidity 55 10 non condensing Cooling water 15 C to 25 C 59 F to 77 F CAUTION Internal condensation can cause damage to the power supply Mechanical outline Freestanding rack cabinet with locking wheels and 4 lifting eye bolts Size and weight Model 665 1 35 m high x 0 7 m deep x 0 6 m wide 53 1 in x 27 6 in x 23 6 in 250 kg 550 Ib Model 668 1 35 m high x 0 7 m deep x 0 6 m wide 53 1 in x 27 6 in x 23 6 in 354 kg 780 Ib Shipping size and weight Model 665 1 52 m x 0 84 m x 0 76 m 60 in x 33 in x 30 in 295 kg 650 Ib Model 668 1 78 m x 0 91 m x 0 76 m 70 in x 36 in x 30 in 400 kg 880 Ib Ordering Information Part number Model 665 208 Model 665 220 Model 665 380 Model 665 400 Model 668 208 Model 668 220 Model 668 380 Model 668 400 Description 100 A 50 V 5 0 kW 208 VAC 100 A 50 V 5 0 kW 220 VAC 100 A 50 V 5 0 kW 380 VAC 100 A 50 V 5 0 kW 400 VAC 135 A 65 V 8 8 kW 208 VAC 135 A 65 V 8 8 kW 220 VAC 135 A 65 V 8 8 kW 380 VAC 135 A 65 V 8 8 kW 400 VAC Consult Lake Shore for other available voltages All specifications are subject to change without notice
100. l Probes Transverse Brass Stem Transverse Probes Short Stem cable length 2 m 6 5 ft 64 mm 2 5 in rigid brass stem 1 5 5 6 0 06 x 0 22 in at flat 8 c T 44 5 mm 1 5 mm thick 1 1 75 in 0 06 in thick ae pu 9 4 mm 0 37 in diameter Corrected accuracy rdg at 25 C Usable full scale ranges Stem material Active area Width in L in T in A in Frequency range temp range for Models 475 and 455 g 0 20 to 30 KG HMMTB 6J02 VR 36 99 and 0 25 0 061 0150 0040 350 3 56 3019 35 kG 0 C to 2 0 125 ia 0 22 0 050 dia Brass DC 35 kG 75 5 4 0 10 to 30 kG HMMTB 6J02 VF 35G 350G and 0 15 35kG 35kG 30to35 KG for Models 460 450 and 421 HSE 1 MMTB 6J02 VH 2 0 125 306 3006 0 25 to 30 KG 0 061 01450 0 040 3 kG 30 kG 02010 max 022 0050 da Brass uS HST 2 75 C MMTB 6J02 VG 2 0 125 3009 39 0 15 to 30 KG 30 kG Brass Stem Transverse Probes Long Stem a LAG cable length 2 6 5 ft lt 64 2 5 in m rigid brass stem 1 5 x 5 6 mm 0 06 x 0 22 in at flat 9 4 mm 0 37 in diameter 5 1 mm 0 20 in dia max 0 06 in max Operating 89 102 mm 3 5 4 0 in flat end view S Contains temp se
101. ld measurement equation For the complete solution Lake Shore offers a full complement of standard and custom Hall effect probes in a variety of sizes and sensitivities See page 26 for complete details on properly selecting a Hall effect probe See pages 29 38 for a complete listing of available probe models www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Measurement Features The Model 475 offers a variety of features to enhance the usability and convenience of the gaussmeter Autorange In addition to manual range selection the instrument automatically chooses an appropriate range for the measured field Autorange works in DC and AC measurement modes Auto Probe Zero Allows the user to zero all ranges for the selected measurement mode with the push of a key Display Units Field magnitude can be displayed in units of G T Oe and A m Max Min Hold The instrument stores the fully processed maximum and minimum DC or RMS field value This differs from the faster peak capture feature that operates on broadband unprocessed field reading information Relative Reading Relative feature calculates the difference between a live reading and the relative setpoint to highlight deviation from a known field point This feature can be used in DC RMS or Peak measurement mode Instrument Calibration Lake Shore recommends an annual recalibration sched
102. ld time with no decay The Model 475 DSP gaussmeter is a good choice if faster peak or RMS measurements are required Range and Resolution When used with appropriate probes the Model 460 3 channel gaussmeter offers full scale ranges from 300 mG to 300 kG A different range can be used with each input With 534 digit resolution DC field variations approaching 0 010 mG can be detected in larger DC fields resolution to one part in 300 000 is possible For RMS and Peak measurement resolution is 434 digits or one part in 30 000 because in these modes environmental noise is more difficult to separate from the desired signal The filter feature of the Model 460 improves resolution in noisy environments by taking a running average of field readings DC mode requires filtering to achieve 534 digit resolution Interface The Model 460 is equipped with both parallel IEEE 488 and serial RS 232C computer interfaces for command and data exchange maximum reading rate can be achieved with the IEEE 488 interface Nearly every function on the Model 460 front panel can be performed via computer interface The Model 460 also includes one corrected and three monitor analog voltage outputs Corrected for sensor linearity offset and temperature effects the corrected output is a DC voltage proportional to the display reading It is generated by a digital to analog converter programmed at the update rate of the Model 460 with software error correction Co
103. ltage output The Model 642 is also protected against power loss under full operation and nominal magnet load Both low and high power line conditions are reported on the front panel display www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Interfaces The Model 642 includes both parallel IEEE 488 and serial RS 232C computer interfaces that provide access to operating data stored parameters and remote control of all front panel operating functions The Model 642 also provides two analog monitors for output current and voltage Each monitor is a buffered differential analog voltage representation of the signal being monitored The current monitor has a sensitivity of 7 V 70 A output while the voltage monitor has a sensitivity of 3 5 V 35 V output Display and keypad The Model 642 incorporates a large 8 line by 40 character vacuum fluorescent display Output current and output voltage readings are displayed simultaneously Five front panel LEDs provide quick verification of instrument status including ramping compliance fault power limit and computer interface mode Error conditions are indicated on the main display along with an audible beeper Extended error descriptions are available under the status key The keypad is arranged logically to separate the different functions of the power supply The most common functions of the power supply are accessed using a single button press The keypad can be locked in order
104. ly defined for transverse probes Nominal Active Area HSE and HST probes have a nominal active area on the order of 1 mm diameter which is useful for all but the most stringent applications The measured field is the average of the active area but without severe gradients therefore the measured value accurately represents the true field Field mapping with standard probes is also practical if a mapping resolution of 1 mm or greater is acceptable Small Active Area HSE and HST probes with a smaller active area are also available from Lake Shore for measurements in severe gradients or for high resolution mapping applications UHS Probes UHS probes have a very large active length up to 3 5 in 89 mm They are designed to measure very low magnitude large volume ambient fields with little gradient www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Probe Durability All Hall effect probes are fragile The sensor normally located at the tip of the probe stem must not be bent physically shocked or abraded It may be tempting to choose a probe with the thinnest transverse stem or smallest diameter axial stem however it is always best to choose the most robust probe that fits the immediate application For example the HMMT 6J04 VR aluminum stem is less prone to damage than the HMFT 3E03 VR flexible stem and the HMMA 2502 VR 1 4 in diameter aluminum is more durable than the HMNA 1904 VR 3 16 in diameter
105. m 7 in tapered to 76 mm 3 in face 3 2 mm 1 in dia bore for optical access through one pole EM7 3P 0 2 2 Pole cap 1 pair 178 mm 7 in tapered to 76 mm 3 in face 3 2 mm dia bore for optical access through both poles EM7 3P 0 1 4 Pole 1 pair 178 mm 7 in tapered to 76 mm 3 in face 6 4 mm 1 4 in dia bore for optical access through one pole EM7 3P 0 2 4 Pole 1 pair 178 mm 7 in tapered to 76 mm 3 in face 6 4 mm 1 4 in dia bore for optical access through both poles EM7 6P 0 1 2 Pole cap 1 pair 178 mm 7 in tapered to 152 mm 6 in face 3 2 mm 1 dia bore for optical access through one pole EM7 6P 0 2 2 Pole cap 1 pair 178 mm 7 in tapered to 152 mm 6 in face 3 2 mm 1 in dia bore for optical access through both poles EM7 6P 0 1 4 Pole 1 pair 178 mm 7 in tapered to 152 mm 6 in face 6 4 mm 1 4 in dia bore for optical access through one pole EM7 6P 0 2 4 Pole cap 1 pair 178 mm 7 in tapered to 152 mm 6 in face 6 4 mm 1 4 in dia bore for optical access through both poles EM7 CABLE Cable from magnet to supply 4 AWG 3 m 10 ft EM7 FLOW Flow switch replacement Consult Lake Shore for FeCo and other pole cap materials Additional Requirements for EM4 and Electromagnets 1 Water supply see flow rate in specifications table or recirculating water chiller Crane or lifting equipment capable of lifting or moving the weight of magnet see specific
106. mation and materials analysis Field Control A built in PI control algorithm turns the Model 475 into an essential building block for magnetic field control in electromagnet systems It along with a voltage programmable magnet power supply is all that is needed to control stable magnetic fields in an electromagnet at the user specified setpoint One of the built in analog voltage outputs drives the program input of the power supply for either bipolar or unipolar operation See page 60 for more information performance The exclusive Frequency Hz Lake Shore DSP algorithms also free the Model 475 from the limitations of conventional RMS conversion hardware and provide better dynamic range resolution and frequency response than ever before These improvements permit meaningful RMS field measurements with broad frequency content or in noisy environments Peak Measurement Mode Pulsed fields are measured in Peak mode which is a natural extension T I of the high speed 30 kG data acquisition necessary for DSP operation Fast instrument sample rates permit capture of positive and negative field pulses as narrow as 20 us in width which can be held for an unlimited length of time with no sag sige This is ideal for most Time magnetizers and other fast pulse applications For more moderate field changes the Model 475 can process the captured data to create other features The gaussmeter can be configured to follow
107. minal sensitivity of the probe Voltage Output 3 The third voltage output provides a voltage proportional to measured field with the most signal processing of the three outputs All probe compensation available to the display readings including temperature compensation can be performed on this output The output is produced by the microprocessor through a high resolution 16 bit D A converter updated at 30 readings per second This output can also be used for field control Computer Interface Two computer interfaces are included with the Model 475 serial RS 232C and parallel IEEE 488 Both allow setup of all instrument parameters and read back of measured values The reading rate over the interface is nominally 30 readings per second but settings from 10 to 100 readings per second are available LabVIEW drivers are provided to instrument users consult Lake Shore for availability e mail info lakeshore com Line input assembly Serial 1 0 DTE 488 interface Auxiliary 1 0 Probe input Model 475 DSP Gaussmeter The Model 475 includes one of the Lake Shore probes listed below specify probe model number when ordering Gaussmeter Hall Probes pecify Axial Probes HMNA 1904 VR HMMA 2502 VR HMNA 1904 VF HMMA 2502 VF Transverse Probes HMMT 6J04 VR HMNT 4E04 VR HMMT 6J04 VF HMNT 4E04 VF Flexible Transverse Probes HMFT 3E03 VR HMFT 3E03 VF See page 26 for
108. minals allow for foot pedal reading reset to keep hands on the work not the instrument Configurable alarms give an audible signal or relay closure to signify pass fail Automated Magnet Testing In automated testing time is money The Model 480 has many features to enhance throughput The instrument has a fast update rate and fast settling time It recovers quickly from reading reset to start a new reading cycle The IEEE 488 and serial computer interfaces included with the 480 can be used to control most instrument functions Relays and analog outputs can be used for automation without a computer interface Magnetizing The magnetizing process places unique demands on all associated electronics The Model 480 responds with a very fast peak capture that can keep up with the fastest magnetizing pulses Both a positive and negative peak can be captured from the same pulse The input of the Model 480 is protected against the high voltages present during magnetizing www lakeshore com Lake Shore Cryotronics Inc Model 480 Fluxmeter akeShore 614 891 2244 Model 480 Fluxmeter 480 Fluxmeter Peak Drift Reading Adjust Reset ES E m Materials Analysis High resolution and low drift define a fluxmeter s role in analytical measurement The high resolution of the Model 480 is reinforced by a low noise floor A configurable filter helps keep the readings quiet Automatic and manual drift adjustment modes help optim
109. mperature 15 C to 25 59 F to 77 F MEM Coil over temperature limit 70 158 Coil spacing nominal 121 mm 4 75 in 178 mm 7 in Coil size width nominal 121 mm 4 75 in a 132 mm 5 2 in Coil size diameter nominal 311 mm 12 25 in 445 mm 17 5 in Current maximum continuous operating 50 coil Voltage nominal l 35 V 50 V Continuous input power nominal 2 5 KVA 9 KVA Shore supply suggested Model 642 d Model 665 Height 0 39 m at 40 angle 15 25 in without stand 0 94 m 37 in Width 0 84 m 33 25 in 1 02 m 40 in Depth 0 51 m 20 in d 0 66 m 26 in Weight 201 9 kg 445 Ib d 635 kg 1400 Ib Shipping weight 215 5 kg 475 Ib E 660 kg 1500 Ib Shipping dimensions 0 97 m x 0 58 m x 0 56 m 0 86 m x 122m x 1 19 38 in x 23 in x 22 in 34 in x 48 in x 47 in www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com EJ Electromagnets Magnetic Field kG Magnetic Field kG Magnetic Field kG Magnetic Field kG EM4 HVA 25 mm 1 in Pole Face Field Plot 38 mm 0 20 in 30 4 10 mm 0 39 in 25 15 mm 0 59 15 3 mm 0 64 1n 20 mm 0 79 im 22 9 mm 0 90 in 25 mm 0 98 im 28 4 mm 1 12 in 20 38 1 mm 1 5 in 4 _ 50 mm 1 97 in 50 8 mm 2 00 in 5 75 mm 2
110. n 100 Current A EM7 HV 152 mm 6 in Pole Face Field Plot 25 5 mim 0 20 10 mm 0 39 in 15 mm 0 59 in 15 3 mm 0 64 1n 20 mm 0 79 in 22 9 mm 0 90 in 25 mm 0 98 in 28 4 mm 1 12 1n 38 1 mm 1 5 in 50 mm 1 97 in 50 8 mm 2 00 tn 75 mm 2 95 in 100 mm 3 94 in 125 mm 4 92 1n 150 mm 5 91 in 177 8 mm 7 00 Current A fax 614 818 1600 e mail info lakeshore com Electromagnets EM4 HVA without stand and EM4 HVA S with stand 83 6 cm 32 9 in 831 1 cm 12 25 in 43 8 cm 17 25 in 33 7 cm 13 25 in 10 7 cm 4 2 in 42 5 cm 12 16 75 in 1 cm 4 75 in 15 2 cm 6 in 19 5 cm 7 58 in 80 9 cm e 31 86 in 3 2 1 25 L 30 5 cm 12 in 4 12 3 4 85 j 4 5 cm 1 77 in 0 78 cm 0 32 in thru 2 places STAND 41 9 cm 7 6 cm 3 in 16 5 28 9 11 36 1 4 x 20 in tar 61 4 through 2 places 24 18 in 7 6 cm 3 in 7 6 cm 3 in 7 6 cm 3 in 6 5 cm 2 61 in 45 1 cm 17 75 in 44 1 cm 17 37 in 51 7 cm 20 36 in EM7 HV 318 16 tam holes 27 i 6 1 om d 2 4 in 44 5 cm 13 5 in J Mo p il 1 6 spem 25 E Fd 101 5 in 24 in e j E Lu 5 a 63 5 em
111. ncy range peak field detection to 50 us pulse widths DC accuracy of 0 075 and up to 5 digits of display resolution make the Model 455 ideal for both industrial and research applications For added functionality and value the Model 455 includes a standard Lake Shore Hall probe 50 us Wide Magnetizing Pulse 30 kG 50 ys Time www lakeshore com Lake Shore Cryotronics Inc Autorange Select Units Range 292 DC Measurement Mode Static or slowly changing fields are measured in DC mode In this mode the Model 455 takes advantage of the internal auto zero function and probe linearity compensation to provide a basic DC accuracy of 0 075 Measurement resolution is enhanced by advanced signal processing capability allowing users the choice of reading rates to 30 readings per second or high resolution to 534 digits Front end amplification specifically designed to complement DSP data acquisition provides high stability and repeatability That along with probe temperature compensation provides superior stability ideally suited for demanding DC measurement applications such as field mapping RMS Peak Mode Periodic AC fields are measured in RMS mode The Model 455 provides an overall RMS frequency range of 10 Hz to 20 kHz and is equipped with both narrow and wide band frequency modes While in narrow band mode frequencies above 1 kHz are filtered out for improved measurement p
112. nd A low pass filter on the output DAC smooths the transitions at step changes during ramping Output reading The Model 642 provides high resolution output readings The output current reading reflects the actual current in the magnet and has a resolution of 0 1 mA The output voltage reading reports the voltage at the output terminals with a resolution of 100 uV output readings can be prominently displayed on the front panel and read over the computer interface Protection The Model 642 provides built in protection against short circuit open circuit line loss low line voltage high line voltage output over voltage output over current over temperature and abrupt change of the external programming input In the event of water flow failure flow sensors provide feedback to the Model 642 and output current is set to 0 A Internal heat sink cold plate and transformer temperatures are also monitored Warnings are displayed before temperature limits are exceeded and current is set to 0 A If temperatures continue to increase over safety limits the Model 642 turns off A proprietary circuit limits the power dissipated in the water cooled cold plate if low resistance and high line conditions exist The Model 642 protects itself if operated into resistances outside of nominal limits By limiting current output the power supply will safely operate into a shorted load and it operates safely into high resistance loads by limiting vo
113. nd AC modes because modulation of the probe signal prevents a clear view of the field response 614 891 2244 fax 614 818 1600 Voltage Output 2 The second voltage output provides a voltage proportional to measured field with the benefits of some signal processing The output is produced by the DSP through a fast D A converter The output signal is updated at 40 kHz giving good response for low to mid frequency fields Signal quality degrades at high frequency because of the sampling rate This voltage can be corrected for probe offset and for the nominal sensitivity of the probe Voltage Output 3 The third output provides a voltage proportional to measured field with the most signal processing of the three outputs All probe compensation available to the display readings including temperature compensation can be performed on this output The output is produced by the microprocessor through a 16 bit D A converter updated at 30 readings per second Computer Interface Two computer interfaces are included with the Model 455 serial RS 232C and parallel IEEE 488 Both allow setup of all instrument parameters and read back of measured values The reading rate over the interface is nominally 30 readings per second LabVIEW drivers are provided to instrument users consult Lake Shore for availability e mail info lakeshore com Line input assembly um Serial 1 0 DTE _ A 5 IEEE 488 interface
114. nsation can cause damage to the power supply Enclosure type 7 U high 19 in rack mount with integral rack mount ears 25 mm 1 in air space required on each side for ventilation Size 483 W x 310 mm H x 572 mm D 19 in x 12 2 in x 22 5 in with handles removed Weight 74 kg 163 Ib Shipping size 635 mm W x 559 mm H x 737 mm D 25 in x 22 in x 29 in Shipping weight 80 kg 175 Ib Ambient temperature 15 C to 35 C at rated accuracy 5 C to 40 C at reduced accuracy Humidity non condensing Warm up 30 min at output current setting Approvals CE mark low voltage compliance to EN61010 3 EMC compliance to EN55022 1 Calibration schedule 1 year Ordering Information Part Number Description 642 204 Model 642 70 A 35 V 2 5 kW 204 208 VAC 642 225 Model 642 70 A 35 V 2 5 kW 220 230 VAC 642 380 Model 642 70 A 35 V 2 5 kW 380 VAC 642 408 Model 642 70 A 35 V 2 5 kW 400 415 VAC Accessories Included 6031 Two front handles 6032 Two rear handles 6051 Terminal block 4 pin 6052 Terminal block 8 pin 6252 15 pin D sub mating connector analog 1 0 Hose clamps Power cable strain relief power cable not included Calibration certificate MAN 642 Model 642 user manual Accessories Available 6201 1 m 3 3 ft long IEEE 488 GPIB computer interface cable assembly 6261 3 m 10 ft magnet cable kit AWG 4 6262 6 m 20 ft magnet cable kit AWG 4 CAL 642 CERT Instrument recalibration with certificate CAL 642 D
115. nsor Temp coefficient max calibration Temp coefficient max zero 0 09 G C 0 015 C 0 13 G C 0 005 C 450 460 0 09 G C 0 015 C Yes 421 0 04 C owe we end view gt lt a 1 5 mm 0 061 in max 7 G Corrected accuracy rdg at 25 C Usable full scale ranges Operating temp range Stem material Width in Active area in L in T in A in Frequency range for Models and 455 HMMTB 6J04 VR 4 430125 125 HSE 0 20 3 5 6 356 to 30 and 350 6 3 5 kG 0 25 8 0 125 E 0 040 dia 35 kG 30 to 35 kG 0 050 0 10 to 30 and 0 15 30 to 35 KG approx HMMTB 6J04 VF 4 pe 125 HST 4 35 G 350 G 3 5 kG 35 kG HMMTB 6J08 VF mp 20 125 for Models 460 450 and 421 HSE 1 MMTB 6J04 VH 4 0 125 0 25 to 30 G 300 G 0061 0 150 0 040 m 3 kG 30 KG 0 C to ass o MMTB 6J04VG 40125 X EUR SIS MMTB 6J08 VG 850 125 30 kG www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 Contains temp sensor Temp coefficient max zero Temp coefficient max calibration 0 09 G C 0 015 C Yes 0 13 G U 0 005 C 450 460 0 09 G C 0 015 C Yes 421 0 04 C 0 13 G C 0 005 C e mail info lakeshore com Gaussmeter Hall Probes Transv
116. ntly used features Menus are reserved for less frequently used setup operations The keypad can be locked out to prevent unintended changes of instrument setup Alarm and Relay High and low alarms are included in the instrument Alarm actuators include display annunciator audible beeper and two relays The relays can also be controlled manually for other system needs Voltage Output 1 The first voltage output gives access to amplified voltage signal directly from the probe This voltage is corrected for the nominal sensitivity of the probe and provides the widest bandwidth of the three voltage outputs In wide band AC mode the signal can be viewed on an oscilloscope to observe the shape of AC fields In Peak mode the output can be used to view a pulse shape or other characteristic of a momentary signal Output 1 serves only as a diagnostic tool in DC and narrow band AC modes because modulation of the probe signal prevents a clear view of the field response 614 891 2244 fax 614 818 1600 Voltage Output 2 The second voltage output provides a voltage proportional to measured field with the benefits of some signal processing The output is produced by the DSP through a fast D A converter The output signal is updated at 40 kHz giving good response for low to mid frequency fields Signal quality degrades at high frequency because of the sampling rate This voltage can be corrected for probe offset and for the no
117. of full scale range Output settings Current setpoint current limit and voltage limit Output programming Local via two 10 turn potentiometers 100 1 remote via 10 V programming input BR2 connector Output displays Current and voltage outputs displayed with digital resolution of 0 1 Output voltage monitor 10 V full scale BR2 connector Output current monitor 10 V full scale BR2 connector Current output connections 9 5 mm threaded studs with nuts On off control Front panel separate on off and reset push buttons remote on off capable Power supply fault detection circuitry Transistor fault detect Slew rate limit protection Internal condensation protection Overheat protection Overpower protection Overload protection External interlocks Input power Model 665 7 6 kVA max 21 A phase with 208 220 VAC between phases 11 A phase with 380 400 VAC between phases Model 668 15 5 max 39 A phase with 208 VAC between phases 19 A phase with 400 VAC between phases Custom voltage configurations are available 50 60 Hz 3 phase plus ground 4 wire Line voltage must be specified at time of order Cable from power supply to facility power not included www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Bipolar Magnet Power Supplies Cooling water requirements minimum at 0 5 nominal load Model 665 flow rate 8 L min 2 1 gal min pressure drop 0 12 MPa 17 psi Mode
118. of the Model 642 permits operation directive which includes the radiated output eliminating the need for with less electrical noise than switch mode emissions requirements external switching or operator electromagnet power supplies The clean field intervention to reverse current background allows greater resolution and finer polarity The Model 642 is capable of detail in results drawn from data taken during supplying 70 A 35 V to a nominal high sensitivity experiments One key benefit 0 5 0 5 load and the output can of this architecture is CE compliance to the be modulated from an external source electromagnetic compatibility EMC directive to frequencies up to 0 17 Hz at 70 A including the radiated emissions requirement Internally programmed output provides 20 bit resolution while externally The true 4 quadrant output capability of the programmed output provides unlimited Model 642 is ideal for sweeping through both resolution positive and negative fields Tightly integrated analog control of the 4 quadrant output The compact low noise design of the provides smooth current change with very low Model 642 makes it the ideal supply overshoot This eliminates the need for external for use in laboratory settings When switching or operator intervention to reverse the combined with a Lake Shore EM4 polarity significantly simplifying system design 4 inch electromagnet and Model 475 The transition through zero current is smooth D
119. on The operator can also control display brightness Following are three examples of the various display configurations The display configured to show the RMS field value and frequency and the probe temperature The display configured to show both the maximum and minimum DC field values The display configured to simultaneously show the positive and negative Peak readings www lakeshore com Lake Shore Cryotronics Inc Model 455 DSP Gaussmeter Keypad The instrument has a 22 position keypad with individual keys assigned to frequently used features Menus are reserved for less frequently used setup operations The keypad can be locked out to prevent unintended changes of instrument setup Alarms and Relays High and low alarms are included in the instrument Alarm actuators include display annunciator audible beeper and two relays The relays can also be controlled manually for other system needs Voltage Output 1 The first voltage output gives access to amplified voltage signal directly from the probe This voltage is corrected for the nominal sensitivity of the probe and provides the widest bandwidth of the three voltage outputs In wide band AC mode the signal can be viewed on an oscilloscope to observe the shape of AC fields In peak mode the output can be used to view a pulse shape or other characteristic of a momentary signal Output 1 serves only as a diagnostic tool in DC and narrow ba
120. onger the exclusive domain of research laboratories Performance requirements are tightening in every magnetic measurement application In response the Model 421 offers improved accuracy resolution noise floor and update rate Throughput Throughput involves much more than update rate of an instrument Usability of an instrument is just as important The Model 421 has a large bright vacuum fluorescent display that can be seen easily in any lighting condition The display updates quickly for fast feedback of probe magnet positioning The operation is straightforward with display prompts for the user Max Hold Alarm and Sort features are included to streamline sorting and testing operations www lakeshore com Lake Shore Cryotronics Inc Model 421 Gaussmeter Model 421 Gaussmeter Zero Pange Hold Proba Ed GDE Gauss Tesl Automation The Model 421 has a variety of interface features that are compatible with automated test configurations The 5 232 serial computer interface can perform nearly every function of the instrument front panel Two analog voltage outputs and an alarm relay facilitate automation without a computer Probes The Model 421 is compatible with most Lake Shore gaussmeter Hall probes When ordering the Model 421 with one of the gaussmeter Hall probes on the following page a discounted package price is available Lake Shore probes
121. ore com EN EJ Model 421 Gaussmeter Model 421 Rear Panel SERIAL DTE MO LISER sate EXHI TO TRANEN Line input assembly i Serial 1 0 interface DTE S Relay terminals Corrected analog output Monitor analog output d juss Q Probe input Powen rr TO MATE PROBE e ANALOG OUTPUTS mos ice INPUT Ga Ussm eter Prob Model 421 includes of the Lake Shore probes listed below specify probe model number when ordering See page 26 for details on properly selecting a probe and for a complete listing of available probe models Axial Probes 4 9 1 0 76 mm diameter 0 36 0 030 in Active area Stem Frequency Usable full Corrected Operating material range scale ranges accuracy temp range coefficient coefficient rdg max zero max calibration MMA 2502 VH 2 in 0 25india 0 015 Aluminum 0 063 in 0 006in 0 005 in 30 G 300 G 0 25 MNA 1904 VH 4 in 3 kG 30 kG to 30 kG 0 09 6 20 0 04 0 125 0 005 0 003in 0 030 dia DC and 10 Hz 0 C to 75 MMA 2502 VG 2 in approx to 400 Hz 0 063 0 006in 0 005 300 3 kG 0 0 125in 0 005in 0 003 in epoxy 0 13 G C 0 005 C Transverse cable length 64 mm 2 5 in 2 m 6 5 ft _ B Probes P A
122. oulder Colorado 80303 March 1985 NBS Special Publication 696 for sale by the Superintendent of Documents 5 Government Printing Office Washington DC 20402 www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com LakeShore Lake Shore Cryotronics Inc 575 McCorkle Boulevard Westerville OH 43082 USA Tel 614 891 2243 Fax 614 818 1600 e mail info lakeshore com www lakeshore com Established 1968 Lake Shore Cryotronics Inc is an international leader in developing innovative measurement and control solutions Founded by Dr John M Swartz a former professor of electrical engineering at the Ohio State University and his brother David Lake Shore produces equipment the measurement of cryogenic temperatures magnetic fields and the charactenzation of the physical properties of materials in temperature and magnetic environments
123. output display or the down stream electronics A Typical Hall Effect Measurement Scheme Ic Model 120CS Current Source Hall Generator Digital _ Voltmeter Load resistor required for optimum linearity if specified www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Magnetic Field Sensors Attaching Discrete Hall Generators to Lake Shore Gaussmeters Lake Shore provides cable assemblies containing the necessary electronic memory EEPROM to interface a Hall generator to a gaussmeter This allows users to assemble a Hall sensor into a difficult to access area prior to gaussmeter attachment The figure below shows the general cable configuration While convenient this method provides less than optimum performance Because of the intricacies involved with proper calibration the user is responsible for the measurement accuracy A probe fully calibrated by Lake Shore is always suggested Special probe mechanical configurations are also available 1 8 m 6 ft 6 1 m 20 ft Certain Hall generator sensitivity constraints are applicable Sensitivities between 5 5 and 10 5 mV kG at 100 mA control current Sensitivities between 0 55 and 1 05 mV kG at 100 mA control current For the Model 460 450 and 421 Gaussmeters 2 m 6 ft and 6 1 m 20 ft cables are available The cable is shipped with a disk containing the small program Hallcal exe which is used to transfer the Hall generator single po
124. performance of three gaussmeters into one package making it an excellent value for materials analysis and field mapping applications The large vacuum fluorescent display shows readings for all three channels simultaneously as well as vector magnitude or differential readings The full function keypad provides easy access to measurement features Measurement Modes The Model 460 operates in DC RMS and Peak modes with superior accuracy and resolution in DC measurement mode Measurements to 53 4 digits are possible due to the low noise floor With low noise and high stability the Model 460 is ideal for multiple axis field mapping applications Changing fields that are often used in material analysis systems can be measured on all three inputs up to 18 times per second over the computer interface with excellent resolution www lakeshore com Lake Shore Cryotronics Inc E ET BSS mme miim i 614 891 2244 Best suited for fringe field measurements measurement of magnets and solenoids driven at line frequency RMS mode measures periodic AC fields from 10 Hz to 400 Hz Instrument circuitry accommodates wave forms with crest factors up to 7 with true RMS conversion Peak circuitry in the Model 460 captures single event peaks or monitors the peak amplitude of periodic wave forms from 10 Hz to 400 Hz with reproducible single peak measurements down to 5 ms rise time Instrument software accommodates indefinite ho
125. ply contacts most of the sensitivity to magnetic fields is contained in an area approximated by a circle centered in the Hall plate whose diameter is equal to the plate width Thus when the active area is given the circle as described above is the common estimation fax 614 818 1600 e mail info lakeshore com Using Hall Generator Hall generator is 4 lead device The control current 1 leads are normally attached to a current source such as the Lake Shore Model 120CS The Model 120 5 provides several fixed current values compatible with various Hall generators red conventional current e v x B force on electron Vu clear or yellow High mobility III V semiconductor Indium arsenide b Gallium arsenide NR Caution Do not exceed the maximum continuous control current given in the specifications The Hall voltage leads may be connected directly to a readout instrument such as a high impedance voltmeter or can be attached to electronic circuitry for amplification or conditioning Device signal levels will be in the range of microvolts to hundreds of millivolts The Hall generator input is not isolated from its output In fact impedance levels on the order of the input resistance are all that generally exist between the two ports To prevent erroneous current paths which can cause large error voltages the current supply must be isolated from the
126. put meaning feedback is ignored and the analog output stays at the manual user setting This method makes the magnet power supply operate in constant current mode The Model 475 also incorporates user settable control slope limits and analog output voltage limits These software limits assure that the magnet power supply is not damaged if the field control system is improperly tuned or begins to oscillate Measured at 0 G and 1000 G www lakeshore com Lake Shore Cryotronics Inc Field Controlled Electromagnet Platforms Gaussmeter Display The Model 475 has a 2 line by 20 character vacuum fluorescent display During normal operation the display is used to report the current field value and field control setpoint When setting instrument field control parameters the display provides prompts for turning the control on off entering the control setpoint entering the control P and I values entering a ramp rate and entering the control slope limit When field control is not active the display can be configured to show features such as maximum and minimum DC field values RMS field value frequency or probe temperature Keypad The instrument has a 22 position keypad with individual keys assigned to frequently used features Menus are reserved for less frequently used setup operations The keypad can be locked out to prevent unintended changes of instrument setup Computer Interface Two computer interfaces are in
127. r Detachable terminal block Monitor analog output Scale 3 V full scale on Vs range Accuracy 1 of reading 10 mV DC to 10 kHz 5 of reading 10 mV 10 kHz to 50 kHz Minimum load resistance 1 Connector Detachable terminal block Corrected analog output Scale User selected Range 10 V Resolution 0 3 mV Accuracy 2 5 mV Minimum load resistance 1 Connector Detachable terminal block General Ambient temperature 15 C to 35 C at rated accuracy 5 C to 40 C with reduced accuracy Power requirement 100 120 220 240 VAC 5 10 50 or 60 Hz 20 VA Size 216 mm W x 89 mm H x 318 mm D 8 5 in x 3 5 in x 12 5 in half rack Weight 3 kg 6 6 Ib Approval CE mark Ordering Information Part number Description 480 Model 480 fluxmeter Specify line power option VAC 100 100 VAC includes U S power cord VAC 120 120 VAC includes U S power cord VAC 220 220 VAC includes universal Europe power cord VAC 240 240 VAC includes universal Europe power cord VAC 120 ALL 120 VAC includes U S and universal Europe power cords and all fuses Accessories included 106 739 Two 8 pin terminal block mating connectors MAN 480 Model 480 user manual Accessories available 4005 1 3 3 ft long IEEE 488 GPIB computer interface cable assembly includes extender required for simultaneous use of IEEE cable and auxiliary terminal block Instrument recalibration with certificate Instrument recalibration with
128. r property of Lake Shore Cryotronics Inc or their respective companies www lakeshore com Lake Shore Cryotronics Inc DIE Locate Download and Order from www lakeshore com 22 locate 23 product and support information quickly with helpful dropdown menus and improved webpages easily access application notes product overviews technical details manuals software news releases product registration and so much more 40 Get local dealer and representative listings customer support and repair services all in one comprehensive site a 46 Download helpful application notes installation instructions Specifications curve loading software and manuals Order Lake Shore temperature controllers temperature monitors temperature sensors temperature transmitters AC resistance bridge current sources cryogenic accessories power supplies gaussmeters fluxmeters Hall effect sensors and probes all in a few easy clicks fast and convenient ell itti fi ba EET AM ENTE 614 891 2244 fax 614 818 1600 e mail info lakeshore com Full scale ranges from 35 mG to 350 kG DC measurement resolution to 0 02 mG Basic DC accuracy of 0 05 DC to 50 kHz frequency range probe dependent 15 band pass and 3 low pass AC filters Peak capture to 20 us
129. rature Display settings Output current and ramp rate Display annunciators Status and errors LED annunciators Fault Compliance Power Limit Ramping Remote Audible annunciator Errors and faults Keypad type 26 full travel keys Keypad functions Direct access to common operations menu driven setup Power White flush ON and black extended OFF push buttons Interface IEEE 488 2 interface Features SH1 AH1 T5 L4 SR1 RL1 PPO DC1 DTO CO E1 Reading rate To 10 rdg s Software support National Instruments LabVIEW driver consult Lake Shore for availability Serial interface Electrical format RS 232C Baud rates 9600 19200 38400 57600 Reading rate To 10 rdg s Connector 9 pin D sub DTE Output current monitor Sensitivity 7 V 70 A Accuracy 1 of full scale Noise 1 mV RMS Source impedance 20 Connector Shared 15 pin D sub Output voltage monitor Sensitivity 3 5 V 35 V Accuracy 196 of full scale Noise 1 mV RMS Source impedance 20 Connector Shared 15 pin D sub Power supply cooling water Remote enable input TTL low or contact closure to enable output jumper required if unused Valve power output 24 VAC at 1 A maximum automatic or manual control Connector Shared 4 pin detachable terminal block Flow switch and water valve optional Magnet cooling water Remote enable input TTL low or contact closure to enable output jumper required if unused Valve power output 24 VAC at 1 A maximum
130. rcuit protected Connector BNC Corrected analog output 1 Configuration Voltage output generated by DAC Range 3 V 10 V for the Model 460 10 Scale User defined Resolution 0 366 mV of 3 V Update rate Same as field measurement Accuracy 0 196 full scale in addition to measurement error Minimum load resistance 1 short circuit protected Connector BNC General Ambient temperature 15 to 35 C at rated accuracy 5 to 40 C with reduced accuracy Power requirement 100 120 220 240 VAC 4 596 10 50 or 60 Hz 40 VA Size 432 mm W x 89 mm H x 368 mm D 17 in x 3 5 in x 14 5 in full rack Weight 7 5 kg 16 5 Ib Approval CE mark Ordering Information Part number 460 460 10 Description Model 460 gaussmeter Model 460 gaussmeter with corrected analog output set to 10 V instead of 3 V Specify line power option VAC 100 VAC 120 VAC 220 VAC 240 VAC 120 ALL 100 VAC includes U S power cord 120 VAC includes U S power cord 220 VAC includes universal Europe power cord 240 VAC includes universal Europe power cord 120 VAC includes U S amp universal Europe power cords amp all fuses Accessories included 115 006 115 007 4060 MAN 460 Detachable line cord U S Detachable line cord Europe Zero gauss chamber Model 460 user manual Accessories available also see Gaussmeter Accessories section 4001 4002 4003 4004 CAL 460 CERT CAL 460 DATA CAL N6 DATA RM 1 RJ 11 4 w
131. rightness control fax 614 818 1600 e mail info lakeshore com Interfaces RS 232C Baud 9600 19200 38400 and 57600 Update rate 30 rdg s ASCII Software support LabVIEW driver Connector 9 pin D style DTE configuration IEEE 488 2 Capabilities SH1 AH1 T5 L4 SR1 RL1 PPO DC1 DT1 60 and E1 Update rate 30 rdg s Software support LabVIEW driver Alarm Settings High low setpoint inside outside and audible Actuators LED annunciator beeper and relays Relays Number 2 Contacts Normally open NO normally closed NC and common C Contact rating 30 VDC at 2 A Operation Follows alarm or operated manually Connector Shared 25 pin 1 0 connector Voltage Output 1 Configuration Real time analog voltage output of wide band AC signal Range 3 9 V Scale 3 5 V full scale on selected range Frequency response 10 Hz to 20 kHz wide band AC Accuracy Probe dependent Noise 1 0 mV RMS Minimum load resistance 1 short circuit protected Connector Shared 25 pin 1 0 connector Voltage Output 2 Configuration Voltage output of field value generated by DAC Range 5 V Scale 3 5 V full scale on selected range Resolution 16 bit 0 15 mV Update rate 40 000 updates s Accuracy 10 mV Noise 0 3 mV RMS Minimum load resistance 1 short circuit protected Connector Shared 25 pin 1 0 connector Voltage Output 3 Configuration Voltage output of compensated DC or RMS
132. rom data taken during high sensitivity experiments www lakeshore com Lake Shore Cryotronics Inc EN Bipolar Magnet Power Supplies Bipolar Magnet Power Supplies Models 665 and 668 0 0 OU jj iB me JD gt 9 B sene Bipolar architecture furthers the idea of clean field generation The 660 series power supplies maintain tight control over the entire output range including zero output This is achieved without reversal contactors or relays which produce unintended field spikes and other discontinuities As a result field hysteresis and other biases are avoided in experimental data The front panel displays the current and voltage outputs with 0 1 A and 0 1 V resolution The current can be controlled via 100 full scale and 1 fine adjust ten turn indexed potentiometers The voltage limit is also set via potentiometer The front panel has connectors for external monitoring of both of these signals There are 4 green LEDs to indicate when the power supply is on the status of interlocks and when the unit is ready for operation Displaying faults for internal and external failures overheating overload 614 891 2244 fax 614 818 1600 Model 665 and Model 668 Bipolar Magnet Power Supply 665 50 V 100 A 5 kW 668 65 V 135 A 8 8 kW and overpower are 9 red LEDs High speed fault detection for transistors helps avoid cascade output failures The front panel also incl
133. rrected output is compatible with the Model 460 vector calculation software The three monitor outputs are real time analog voltages proportional to each input s field uncorrected they provide output across the full DC to 400 Hz bandwidth at real time speed fax 614 818 1600 e mail info lakeshore com Model 460 Rear Panel Line input assembly 488 interface Serial 1 0 interface Corrected analog output Monitor analog outputs Q Probe inputs Display The Model 460 has a 4 line by 20 character vacuum fluorescent display During normal operation the display is used to report field readings and give results of other features such as max min or relative When setting instrument parameters the display gives the operator meaningful prompts and feedback to simplify operation The operator can also control display brightness Following are four examples of the various display configurations Normal Reading the display configured to show the live DC field readings for the X Y and Z axis as well as the vector magnitude DC Hold On the display configured to show the live DC field readings for the X Y and Z axis as well as the maximum field reading settable to any axis Differential Reading On the display configured to show the live DC field readings for the X and Y axis as well as the X Y axis differential reading 3 Separate Probe Readings On the display configured to
134. rtificate Instrument recalibration with certificate and data Calibration data for a new Model 410 Axial probe for Model 410 Transverse probe for Model 410 91 mm 2 in brass axial probe for Model 410 102 mm 4 in brass axial probe for Model 410 51 mm 2 in brass transverse probe for Model 410 102 mm 4 in brass transverse probe for Model 410 Probe extension cable 1 m 3 ft Probe extension cable 3 m 10 ft All specifications are subject to change without notice fax 614 818 1600 e mail info lakeshore com 53 digit DC resolution 1 part out of 300 000 Automatic drift compensation Very fast peak capture AC frequency response to 50 kHz IFEE 488 serial interfaces a Storage of parameters for up to 10 existing coils Product Description An advanced tool designed primarily for use in industrial and measurement systems settings the Model 480 fluxmeter measures total flux from which B flux density and H magnetic field strength can be determined The Model 480 is valuable for magnetizing manual and automated magnet testing and sorting and as the main component in BH loop or hysteresis measurement system applications The Model 480 is compatible with most sensing coils and fixtures Manual Magnet Testing A bright display and fast update rate make the Model 480 ideal for manual magnet sorting and testing The instrument s low drift improves productivity with fewer adjustments Remote ter
135. s Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Helmholtz Coils Helmholtz Coils Magnet Moment Measurement for use with the Model 480 tluxmeter only We offer three Helmholtz coils for fluxmeter moment measurements 64 mm 2 5 in 152 mm 6 in and 305 mm 12 in diameter Calibration accuracy 0 75 Inside diameter 64 mm 2 5 in 152 mm 6 in 305 mm 12 in Coil resistance approx 350 1100 1400 Operating temperature range 0 to 60 C Coil constant approx 0 013 Wb cm V s 102 mm 4 0 in F 107 mm 4 2 in 59 mm 2 33 in j t 32mm Pt l 152 64 mm M gt 1 25 in ID 2 5 in bore 77 2 3 wide PX P 1 00 in 1 1 opening through both sides y banana jacks PI voltage output 1 banana jacks 89 mm 3 5 voltage output 220 mm 8 65 in 12 305 12 10 P T a i NOTE The FH Series coils Ordering Information Part number Description the Lake Shore FH 2 5 64 mm 2 5 in Helmholtz coil Model 480 FH 6 152 mm 6 in Helmholtz coil FH 12 305 mm 12 in Helmholtz coil fluxmeter only They cannot imm All specifications are subject to be used with the 33 change without notice Model 475 455 P a 460 450 or 421 J T815 in gaussmeters ee i 7 4 n
136. s that are stored in the probe connector s non volatile memory Probe Field Compensation The Hall effect devices used in gaussmeter probes produce a near linear response in the presence of magnetic field The small nonlinearities present in each individual device can be measured and subtracted from the field reading Model 455 probes are calibrated in this way to provide the most accurate DC readings Probe Temperature Compensation Hall effect devices show a slight change in sensitivity and offset with temperature Probe temperature effects can be measured and subtracted out of field readings A temperature sensor in the probe tip relays real time temperature to the gaussmeter enabling compensation Although temperature effects contribute only a small fraction of the overall probe measurement accuracy temperature compensation will often improve measurement and control stability Probe Temperature Display The gaussmeter can display the probe s temperature in C along with a field reading when using a probe that includes a temperature sensor Frequency Display When operating in RMS mode the gaussmeter can display the frequency of the measured AC field along with a field reading Probe Information The gaussmeter reads the probe information on power up or any time the probe is changed to allow hot swapping of probes Critical probe information can be viewed on the front panel and read over the computer interface to en
137. sitivity and serial number into an optional MCBL 6 blank connector to provide all gaussmeter functions except field and temperature compensation If no sensitivity information is available the Model 475 reverts to resistance measurement e mail info lakeshore com Display and Interface Features Display The Model 475 has a 2 line by 20 character vacuum fluorescent display During normal operation the display is used to report field readings and give results of other features such as max min or relative The display can also be configured to show probe temperature or frequency When setting instrument parameters the display gives the operator meaningful prompts and feedback to simplify operation The operator can also control display brightness Following are four examples of the various display configurations Normal Reading the display configured to show the RMS field value and frequency and the probe temperature Max DC Hold On the display configured to show both the Maximum and Minimum DC field values Max Peak Hold On the display configured to both show the positive and negative Peak readings Field Control On the display configured to show the field control setpoint and current field value when field control is active www lakeshore com Lake Shore Cryotronics Inc Model 475 DSP Gaussmeter Keypad The instrument has a 22 position keypad with individual keys assigned to freque
138. sure proper system configuration Extension Cables The complex nature of Hall effect measurements make it necessary to match extension cables to the probe when longer cables are needed Keeping probes and their extensions from getting mixed up can become a problem when more than one probe is in use The Model 455 alleviates most of the hassle by allowing users to match probes to extensions in the field Stored information can be viewed on the front panel and read over the computer interface to ensure proper mating Hall Effect Generators Magnetic Field Sensors The Model 455 will operate with a discrete Hall effect generator when a suitable probe is not available Users can program nominal sensitivity and serial number into an optional MCBL 6 blank connector to provide all gaussmeter functions except field and temperature compensation If no sensitivity information is available the Model 455 reverts to resistance measurement 614 891 2244 fax 614 818 1600 e mail info lakeshore com Display and Interface Features Display The Model 455 has a 2 line by 20 character vacuum fluorescent display During normal operation the display is used to report field readings and give results of other features such as max min or relative The display can also be configured to show probe temperature or frequency When setting instrument parameters the display gives the operator meaningful prompts and feedback to simplify operati
139. ted DC or RMS field value generated by DAC also used for field control Range 10 V Scale User specified defaults same as Voltage Output 2 Resolution 16 bit 0 3 mV Update rate 30 updates s Accuracy 2 5 mV Noise 0 3 mV Minimum load resistance 1 short circuit protected Connector In 25 pin 1 0 connector General Ambient temperature 15 C to 35 C at rated accuracy 5 C to 40 C with reduced accuracy Power requirement 100 120 220 and 240 VAC 6 10 50 Hz or 60 Hz 20 VA Size 216 mm W x 89 mm H x 318 mm D 8 5 in x 3 5 in x 12 5 in half rack Weight 3 kg 6 6 Ib Approval CE mark Ordering Information Part number Description 475 Model 475 DSP gaussmeter Probes and Extensions Probe compatibility Full line of standard and custom probes available not compatible with Model 450 421 probes see page 7 for included additional standard probes available Hall sensor compatibility Front panel programmable sensitivity and serial number for user supplied Hall sensor see page 40 Extension cable compatibility Calibrated or uncalibrated probe extension cables with an EEPROM are available from 10 ft to 100 ft see page 39 Lake Shore calibrated extension cables maintain the same accuracy as the Model 475 probe The uncalibrated version requires the operator to load the matching probe data file into the cable PROM directly from the Model 475 front panel Additional errors caused by the
140. test set up dimensions usually determine the final selection Longer stems are more susceptible to accidental bending in many cases not Usable Full Scale Ranges vs Probe Type catastrophic but bothersome Stem length does not affect performance for Models 460 450 and 421 HST 2 HSE 1 Be aware of the differences in the probe active areas shown on the data sheet A Hall effect probe will indicate the average field value sensed over that total active area Thus when measuring magnetic fields with a high gradient across the sensor width choose the smallest active area practical Keep in mind the fragility rule see the second bullet above Lake Shore gaussmeter probes exhibit different ranges of magnetic fields over which they will provide valid readings Check the specification sheet and the tables at the right for these usable ranges B If none of the standard probe configurations fit your needs Lake Shore can provide custom probes to meet your physical temperature and accuracy requirements Contact us with your special requirement details www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Magnitude Typical Hall effect probes cover an operating range of 3 to 5 orders of magnitude Operation beyond this field range requires some compromise in performance often including higher noise or loss of resolution Choosing the correct probe type ensures optimal performanc
141. the Model 410 stores the complete instrument configuration in nonvolatile memory including the calibration number and probe offset making it unnecessary in most cases to go through a setup procedure on power up www lakeshore com Lake Shore Cryotronics Inc EJ Model 410 Gaussmeter Model 410 Gaussmeter The Model 410 is a handheld gaussmeter designed for accurate magnetic field measurements from 0 1 G to 20 kG 0 01 mT to 2 T Most operating functions can be selected via the front panel keypad with one or two keystrokes The Model 410 displays in gauss or tesla AC or DC magnetic field values with resolution to 100 mG Operating functions include Max Hold Filter Relative Reading Zero Probe and an audible Alarm 114 6 4 m 4 5 0 25 66 6 4 2 6 in 0 25 in 4 4 mm 1 1 mm 0 045 Tem 0 060 in 28 o max 0 060 in 3 2 mm 0 125 in nominal diameter flexible stem Transverse Probe The transverse probe measures magnetic fields perpendicular to the probe axis vem roc o SA EY 33 os 3 2 mm a 125 in noms diameter 1 mm V 09 m flexible stem max Td 4 114 6 4 pu 4 5 0 25 in Axial Probe The axial probe has the Hall sensor mounted perpendicular to the probe axis and measures magnetic fields parallel to the probe axis Model 410 Specifications Display Digital liquid crystal
142. this mode the gaussmeter pondo takes advantage of the internal iA 80 60 40 20 0 20 40 60 80 auto zero function X Position mm and probe linearity compensation to provide its best accuracy Measurement resolution is enhanced by advanced signal processing capability allowing users the choice of high reading rates to 100 readings per second or high resolution to 534 digits The Model 475 also features front end amplification specifically designed to complement DSP data acquisition providing high stability and repeatability That along with probe temperature compensation makes the Model 475 the most stable gaussmeter ever produced by Lake Shore suiting it perfectly for demanding DC measurement applications such as field mapping and field control www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com RMS Measurement Mode Periodic AC fields are measured in RMS mode which highlights the uniquely flexible filter functions of the Model 475 An overall RMS frequency range of 0 5 Hz to 50 kHz is offered by the gaussmeter Selectable band pass and low pass filters allow users to reject unwanted signals and improve measurement EPS BP Model 475 DSP Gaussmeter Selective Bandpass Filters 4 of a possible 15 1000 10000 Advanced Features The Model 475 combines hardware and firmware elements to create advanced features that facilitate auto
143. to secure either all changes or just the instrument setup parameters allowing the supply output to be changed fax 614 818 1600 e mail info lakeshore com Model 642 Specifications Output Type Bipolar 4 quadrant DC current source Current generation Fully linear regulation with digital setting and analog control Current range 70 A Compliance voltage DC 35 V nominal Power 2450 W nominal Load resistance range 0 4 to 0 6 Q Load inductance range 0 to 1 H Nominal load 0 5 0 5 H Current ripple 5 mA RMS 0 007 at 70 A into nominal load Current ripple frequency Dominated by the line frequency and its harmonics Temperature coefficient 15 ppm of full scale C Line regulation 60 ppm of full scale 10 line change Stability 1 h 1 mA h after warm up Stability 24 h 5 mA 24 h typical dominated by temp coefficient and line regulation Isolation Differential output is optically isolated from chassis to prevent ground loops Slew rate 50 A s into nominal load 650 A s minimum into a resistive load Compliance voltage AC 43 V nominal Settling time 1 s for 1096 step to within 1 mA of output into nominal load Modulation response 0 17 Hz at 70 A sine wave into nominal load 0 0296 THD lt 10 Hz at 10 A sine wave into nominal load 0 1096 THD Attenuation 0 5 dB at 10 Hz Protection Short circuit line loss low line voltage high line voltage output over voltage output over current and ov
144. udes switches for standby output start polarity and local remote mode The 660 Series can be controlled by the user via any 10 V input or by a Lake Shore Model 475 gaussmeter The combination of these power supplies with an electromagnet and Model 475 gaussmeter form a versatile electromagnet field control system This system is ideally suited for integration into customer designed magnetic test platforms for applications including magneto optical studies magnetic hysteresis studies in line annealing Hall effect studies susceptibility measurements Spin magnetic resonance demonstrations and biological studies Refer to page 60 for more information e mail info lakeshore com Specifications Output current and voltage Model 665 100 A x50 V 5 kW Model 668 135 A 65 V 8 8 kW Ramp rate Up to 10 A s Load Resistive electromagnet or any equivalent resistive load Supplies are compensated for typical electromagnets highly inductive loads may require tuning in the field Nominal load Model 665 0 5 Model 668 0 5 Minimum load consult Lake Shore for other magnet load requirements Model 665 0 25 O Model 668 0 35 O Output current stability 0 01 of reading 0 01 of full scale range under conditions of constant line voltage load and temperature Current noise 0 00196 of reading 0 001 of full scale range peak to peak between 0 01 Hz and 1 Hz Voltage ripple 5 mV RMS 0 01
145. ue at value at ncalibrate 30 kG data supplied 100 Ic 1 mA Cannot be used with Lake Shore gaussmeters Compatible with Lake Shore Model 410 gaussmeter only Model 2101 is a replacement for the Model 2100 consult Lake Shore for comparison HGT 2101 HGT 3010 HGT 3030 Accessories available CAL 1X DATA Ordering Information Part number Description HGT 1010 General purpose transverse Hall generator HGT 1020 General purpose transverse Hall generator HGT 1050 General purpose transverse Hall generator flat mount HGT 1070 Ferrite embedded transverse Hall generator HGT 2010 General purpose transverse Hall generator www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 Surface mount transverse Hall generator Instrumentation quality transverse Hall generator ceramic package Instrumentation quality transverse Hall generator ceramic package 1 axis Hall generator recalibration with certificate and data not available for HGT 2101 All specifications are subject to change without notice e mail info lakeshore com Magnetic Field Sensors Cryogenic Hall Generators HGCA 3020 HGCT 3020 254 mm 10 in min ad 254 mm 10 in min um 5 08 mm 0 20 in 6 10 mm 0 240 in max 16 mm lead length 0 63 in center of active area s L 6 1 14 mm NL 0 045 in protective ceramic case 2 67 mm 0 105 Lt 5 08 mim 0 20 1n
146. ule for all precision gaussmeters Recalibrations are always available from Lake Shore but the Model 475 allows users to field calibrate the instrument if necessary Recalibration requires a computer interface and precision low resistance standards of known value www lakeshore com Lake Shore Cryotronics Inc Model 475 DSP Gaussmeter EN Instrument Probe Features The Model 475 has several capabilities that allow the best possible measurements with Lake Shore probes These firmware based features work in tandem with the probe s calibration and programming to ensure accurate repeatable measurements and ease of setup Many of the features require probe characteristics that are stored in the probe connector s non volatile memory Probe Field Compensation The Hall effect devices used in gaussmeter probes produce a near linear response in the presence of magnetic field The small non linearities present in each individual device can be measured and subtracted from the field reading Model 475 probes are calibrated in this way to provide the most accurate DC readings Probe Temperature Compensation Hall effect devices show a slight change in sensitivity and offset with temperature Probe sensitivity temperature effects can be measured and subtracted out of field readings A temperature sensor in the probe tip relays real time temperature to the gaussmeter enabling compensation Although temperature effects contribute onl
147. urpose transverse sensitivity Active area approx 1 02 mm 0 040 in diameter circle 0 76 mm 0 030 in diameter circle 20 Input resistance approx Output resistance approx Nominal control current Icn 100 mA 200 mA 200 mA Maximum continuous current 300 mA non heat sinked 25 C Magnetic sensitivity Ic nominal control current Maximum linearity error sensitivity versus field 250 mA 1 0 rdg 10 to 10 kG 1 0 rdg 0 to 10 kG 2 rdg 20 to 20 kG Zero field offset voltage General purpose transverse high 0 127 x 0 127 mm 0 005 x 0 005 in square 4500009000 10 E NENNEN NN HGT 1050 t m 254 mm 10 in min G acti area D or 3 18 mm 0 125 in 4 47 0 51 mm 0 020 in max over active area and leads HGT 2010 4 45 mm 12 7 mm 5 0 5 0 175 in 31 75 mm 1 25 in max oo OOOOOcCcC lt a 8 T 1 14 mm 0 045 in center of active area 1 52 mm 0 060 HGT 3010 HGT 3030 6 10 mm 254 mm 10 in min 0 240 in max 16 00 mm lead length gt center of active area LOO lt gt So i 7 protective ceramic case 4 57 mm 0 180 in AL 1 09 0 043 HGT 3010 Instrumentation quality transverse low temp coefficient ceramic package 1 02 mm 0 040 in di
148. usoidal AC integrator drift NA AC Peak AC peak resolution 3 digits AC peak integrator capacitance 0 1 uF nominal AC input resistance 100 kO 100 kO 100 kO AC peak ranges 300 uVs AC peak resolution AC minimum reading AC peak accuracy 5 rdg 10 Vs 10 Hz to 10 kHz sinusoidal 10 rdg 10 uVs 2 Hz to 50 kHz sinusoidal AC peak update rate Reduces update rate to 1 4 normal Front Panel Display type 2 line x 20 character vacuum fluorescent display Display resolution 5 digits Display update rate 5 rdg s Display units Vs MxN WbN Vs Wb a A 96 Units multipliers p n u m k M G Annunciators input signal DC DC input signal v positive and negative peaks R remote operation alarm on Keypad 21 full travel keys www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Model 480 Fluxmeter 25 Interfaces 488 2 capabilities SH1 AH1 T5 L4 SR1 PPO DC1 DTO CO E1 Serial interface RS 232C electrical DA 9 connector 9600 baud External reset type Contact closure Alarms Number 2 Settings High and low setpoint Inside Outside Audible Actuators Display annunciator beeper relays Relays Number 3 Contacts Normally open NO normally closed NC and common C Contact rating 30 VDC at 2 A Operation Follow high low alarms with third relay indicating no alarm state can be operated manually Connecto
149. with EEPROM Probe extension cable with EEPROM 15 m 50 ft uncalibrated Probe extension cable with EEPROM 30 m 100 ft calibrated Probe extension cable with EEPROM 30 m 100 ft uncalibrated Rack mount kit for gt gaussmeter in 483 mm 19 in rack 7 6 m 25 ft uncalibrated 15 m 50 ft calibrated RM 2 Rack mount kit for two 2 rack gaussmeters in 483 mm 19 in rack Calibration services CAL N7 DATA CAL 475 CERT CAL 475 DATA New instrument calibration for Model 455 475 with certificate and data Instrument recalibration with certificate Instrument recalibration with certificate and data All specifications are subject to change without notice Custom probes available consult Lake Shore 614 891 2244 fax 614 818 1600 e mail info lakeshore com Model 455 DSP Gaussmeter Model 455 DSP Gaussmeter Field ranges from 35 mG to 350 kG DC measurement resolution to 0 02 mG Basic DC accuracy of 0 075 DC to 20 kHz AC frequency range AC narrow and wide band modes Standard probe included Standard and custom probes available Introduction The Model 455 digital signal processing DSP gaussmeter combines the technical advantages of DSP technology with many advanced features at a moderate price DSP technology creates a solid foundation for accurate stable and repeatable field measurements Advanced features including DC to 20 kHz AC freque
150. www lakeshore com wi Lakeshore EN Contents Magnetic Instruments and Accessories Model 475 DSP 5 Model 455 DSP Gaussmeter Model 460 3 Channel Model 421 Model 410 Hand held Gaussmeter Hall Probes Magnetic Field Sensors Fluxmeter Coils and Accessories Gaussmeter Hall Probes Gaussmeter Hall Probe Accessories 22222 Magnetic Field Sensors Hall Generators Helmholtz Coils Field Standards Fluxmeter Helmholtz Coils Magnet Moment Measurement Search COINS supe omite cutis erste perta e bab Model 642 Electromagnet Power Bipolar Magnet Power Supplies 222222 2 Recirculating Chillers Field Controlled Electromagnet Platforms Units for Magnetic Measurement 2007 Lake Shore Cryotronics Inc All rights reserved The technical and pricing information contained herein is subject to change at any time All trademarks or service marks noted herein are eithe
151. y a small fraction of the overall probe measurement accuracy temperature compensation will often improve measurement and control stability Probe Temperature Display The gaussmeter can display the probe s temperature in C along with a field reading when using a probe that includes a temperature sensor 614 891 2244 fax 614 818 1600 Frequency Display When operating in RMS mode the gaussmeter can display the frequency of the measured AC field along with a field reading up to 20 kHz Probe Information The gaussmeter reads the probe information on power up or any time the probe is changed to allow hot swapping of probes Critical probe information can be viewed on the front panel and read over the computer interface to ensure proper system configuration Extension Cables The complex nature of Hall effect measurements make it necessary to match extension cables to the probe when longer cables are needed Keeping probes and their extensions from getting mixed up can become a problem when more than one probe is in use The Model 475 alleviates most of the hassle by allowing users to match probes to extensions in the field Stored information can be viewed on the front panel and read over the computer interface to ensure proper mating Hall Effect Generators Magnetic Field Sensors The Model 475 will operate with a discrete Hall effect generator when a suitable probe is not available Users can program nominal sen

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