Model 421 Gaussmeter
Contents
1. 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 of 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 lakeshore com Model 421 Gaussmeter Model 421 Rear Panel 1 BERA TE Line Input Assembly Serial 1 0 Interface Relay Terminals Corrected Analog Output Monitor Analog Output Probe Input Ga USSM eter Hall Prob QS The Model 421 includes one of the Lake Shore probes listed below specify probe model number when ordering See page 25 for details on properly selecting a probe and for a complete listing of available probe models ene sl 2 5 in 64 mm ne 2 L Tina 6 6 ft 2 m p Axial Probes 0 36 20030 in diameter 9 1 20 76 mm L Active area Stem Frequency Usable full Corrected Operating Temp Temp material range scale ranges accuracy temp range coefficient coefficient rdg max zero max calibration MMA 2502 VH 2 in 0 25 india 0 015 in Aluminum 0 063 in 0 006in2. 0 005 in 30 G 300 G 0 25 MNA 1904 VH 4in 0 187india 0 005 in Fiberglass 3 kG 30 kG to 30 kG 0 09 GC 0 04 6 C 0 125in 0 005in 0 003 in 0 030 in dia epoxy DC and 10 Hz 0 C to 75 C MMA 2502 VG din 0 25india 0 015in approx to 400 Hz 0 063 in 0 006in 0 005 in 300 G 3 kG winnie MNA 1904 VG 4in 0 187india 0 005 in Fiberglass 30 kG 0 13 GC 0 005 C 0 125in 0 005in 0 003 in epoxy Transverse Probes oe bl alae 2 5 in 64 mm to L j length T B 6 6 ft 2 m CRENTE E 4 A j i l i 0 56 0 090 in diameter MEE 9 1 40 76 mm 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 0 125 in max 0 005 in 30 G 300 G 0 25 oy Jo l Rigid glass DC and 10Hz 3kG 30 kG to 30 KG 0 09 G C 0 04 C 0 040 in dia epoxy to 400 Hz MNT 4E04 VH 4 in 0 045 in 0 150 in 0125 in max 0 005 in MMT 6J04 VG 4in 0 061in 0 180in approx Aluminum DC 0 125 in max 0 005 in 300 G 3 KG 0 15 aie MNT 4E04 VG 4in 0 045in 0 150in Rigid glass DC and10Hz 30KG to 30 kG E013 GPC 0 005 C 0 125 in max 0 005 in epoxy to 400 Hz Flexible Transverse Probes cable sle 2 5 in 4 mm h 3 40 5 0 125 in 7
3. 9 DTE configuration Software support LabView driver consult Lake Shore for availability compatible with Model 420 command set Alarm Settings High and low set point 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 at2A Operation Follows alarm Connector Detachable terminal block Monitor analog output Configuration Real time analog voltage output Range 3 V Scale 3 V FS on selected range Frequency response DC to 400 Hz Accuracy Probe dependent Minimum load resistance 1 KO short circuit protected Connector BNC Corrected analog output Configuration Voltage output generated by DAC Range 3 V Scale 3 V FS on selected range Resolution 1 25 mV Update rate 5 updates s Accuracy 0 35 Minimum load resistance 1 KO 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 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 421 Model 421 gaussmeter plus one probe 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 univ
4. 6 413 3 mm ie length 0 125 in diameter max wasn a 1 6 6 ft 2 m l 3 18 mm 9 53 mm B tT ae A L 0 36 20 030 in diameter 9 1 0 76 mm T _ e 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 C MFT 3E03 VG max max 0 005 in approx tubing to 400 Hz 300 G 3 kG 0 15 0 13 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 Specitications 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 amp 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 3 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 G UHS Probe 30 G 3G 300 mG 0 01 kG 0 001
5. M Resolution to 43 digits 1 part out of 30 000 E Large vacuum fluorescent display E Serial interface E Analog voltage outputs E Sort function displays Pass Fail message Alarm with relay Product Description The Model 421 Hall Effect Gaussmeter is Lake Shore s 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 longer 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 Or 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 Cryotroni
6. cs Inc Model 421 Gaussmeter Model 421 Gaussmeter Automation The Model 421 has a variety of interface features that are compatible with automated test configurations The RS 232C 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 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 two 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 cE BLakeShore 421 Gaussmeter Following are four examples of the various display configurations
7. ersal 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 Terminal block for relay outputs 115 006 Detachable line cord U S 115 007 Detachable line cord European 4060 Zero gauss chamber MAN 421 Model 421 user manual Accessories available 106 741 Terminal block mating connector 3 pin connector for alarm relay CAL 421 CERT Instrument recalibration with certificate 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 2 rack gaussmeter in 483 mm 19 in rack RM 2 Rack mount kit for two 2 rack gaussmeter in 483 mm 19 in rack One probe included additional probes ordered separately Custom probes available consult Lake Shore fax 614 818 1600 e mail info lakeshore com
8. kG 0 0001 kG 0 01 G 0 1 kG 0 01 kG 0 001 kG ol lo i 0 001 kG 0 0001 kG a Zog a N N 20D G Seo S h S2 S DoD 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 4 digits Probe type Range HST probe 300 kG 30 kG 3 kG 300 G 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 3G 0 001 G 300 mG 0 1 mG AC frequency range 10 Hz to 400 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 by 20 character vacuum fluorescent display Display resolution To 4 digits Display update rate 5 rdg s Display units Gauss G Tesla T Units multipliers u m K Annunciators RMS AC input signal DC DC input signal MAX Max Hold value s Relative reading R Remote operation Alarm on Keypad 12 key membrane Front panel features Intuitive operation 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
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