Model 480 Fluxmeter - Lake Shore Cryotronics, Inc.
Contents
1. 01 mVs 0 0001 mVs 0 01 uVs 0 01 Vs AC minimum reading 3 000 mVs 0 3000 mVs 30 00 uVs 3 00 Vs 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 sinusoidal AC integrator drift NA AC peak AC peak resolution 334 digits AC peak integrator capacitance 0 1 uF nominal AC input resistance 100 KQ 100 KQ 100 KQ AC peak ranges 30 mVs 3 mVs 300 Vs AC peak resolution 0 01 mVs 0 001 mVs 1 Vs AC minimum reading 0 01 mVs 0 001 mVs 5 uVs AC peak accuracy 5 rdg 10 uVs 10 Hz to 10 kHz sinusoidal 10 rdg 10 Vs 2 Hz to 50 kHz sinusoidal AC peak update rate Reduces update rate to normal Front panel Display type 2 line x 20 character vacuum fluorescent display Display resolution To 5 4 digits Display update rate 5 rdg s Display units Vs MXN WbN VsO Mx Wb G T Wbcm A Units multipliers p n u m kK M G Annunciators AC AC input signal DC DC input signal v positive and negative peaks R remote operation alarm on Keypad 21 full travel keys Interfaces IEEE 488 2 capabilities SH1 AH1 T5 L4 SR1 RL1 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 Cont2. Flux Technology Model 480 FIX Measurement Technology A Model 480 Fluxmeter Model 480 features Reading Chr eft is 2 s Arar Pear Hangi Agnt j Poa l Hold eo g 534 digit DC resolution 1 part out of 300 000 Automatic drift compensation Very fast peak capture AC frequency response to 50 kHz IEEE 488 and serial interfaces Storage of parameters for up to 10 existing coils CE mark certification Lake Shore Cryotronics Inc t 614 891 2244 f 614 818 1600 e info lakeshore com www lakeshore com 99 a Q Flux Measurement Technology Flux Technology Model 480 CcCRYOTRONICS Peak Peak Dritt Reading Adjust Reset m a 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 terminals allow for foot pedal reading reset to keep hands on th
3. able assembly includes extender required for simultaneous use of IEEE cable and auxiliary terminal block Instrument recalibration with certificate Instrument recalibration with certificate and data CAL 480 CERT CAL 480 DATA CAL N8 DATA Calibration data for a new Model 480 RM 1 2 Rack mount kit for mounting one Model 480 in 483 mm 19 in rack RM 2 Rack mount hit for mounting two Model 480s in 483 mm 19 in rack Coils see pages 63 64 and 65 for more information FNT 6R04 100 100 cm search coil FNT 5P04 30 30 cm 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 Lake Shore Cryotronics Inc t 614 891 2244 f 614 818 1600 e info lakeshore com www lakeshore com
4. acts Normally open NO normally closed NC and common C Contact rating 30 VDC at 2A Operation Follow high low alarms with third relay indicating no alarm state can be operated manually Connector 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 KQ 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 KQ 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 Please indicate your power cord configuration 100 V U S cord NEMA 5 15 120 V U S cord NEMA 5 15 220 V Euro cord CEE 717 240 V Euro cord CEE 717 240 V U K cord BS 1363 240 V Swiss cord SEV 1011 220 V China cord GB 1002 Accessories included NO O61 GD 106 739 Two 8 pin terminal block mating connectors 119 028 Model 480 user manual Accessories available 4005 1 m 3 3 ft long IEEE 488 GPIB computer interface c
5. e 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 interfaces included with the Model 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 480 Fluxmeter ACDC Units Local Cr Coil Setup De Alarm E E ae Setup Cal EE Alarm Ser Onvort EJ 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 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 optimize the integrators low drift characteristics The IEEE 488 and serial computer interfaces included with the 480 allo
6. he 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 To 5 4 digits DC integrator capacitance 1 uF nominal DC input resistance 100 KQ 100 KQ 10 KQ 10 KQ DC ranges 300 mVs 30 mVs 30 mVs 3 mVs DC resolution 0 001 mVs 0 0005 mVs 0 0005 mVs 0 0005 mVs DC accuracy Offset 10 Vs DC integrator drift gain 0 25 of reading lt 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 KQ input resistance constant temperature environment DC peak DC peak resolution 4 4 digits DC peak integrator capacitance 1 uF nominal DC peak input resistance 100 KQ 100 KQ 10 KQ 10 KQ DC peak ranges 300 mVs 30 mVs 30 mVs 3 mVs DC peak resolution 0 01 mVs 0 001 mVs_ 0 001 mVs 0 001 mVs DC peak minimum reading 0 05 mVs 0 005mVs 0 005mVs 0 005 mVs DC peak accuracy Offset 100 Vs DC integrator drift gain 5 of reading lt 10 Vs s maximum rate of change DC peak maximum d dt 60 Vs s DC peak update rate Reduces update rate to 14 normal AC AC resolution 43 4 digits reduced to 3 4 digits on the 30 uVs range AC integrator capacitance 0 1 uF nominal AC input resistance 100 KQ 100 KQ 100 KQ 100 KQ AC ranges 30 mVs 3 mVs 300 uVs 30 Vs AC resolution 0 0
7. om other manufacturers can be 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 F ki 5 ANG ae vi a SERIAL I O eae CAUTION POWER OFF TO 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 Lake Shore Cryotronics Inc t 614 891 2244 f 614 818 1600 e info lakeshore com www lakeshore com Flux Measurement Technology Flux Technology Model 480 Model 480 specifications Measurement Number of inputs 1 Input type 2 lead ground referenced Input resistance 100 KQ or 10 kQ Maximum operating input voltage 60 V Absolute maximum input voltage 100 V WARNING voltages between 60 V and 100 V will not damage t
8. ve 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 is selectively outside or inside a user specified range Lake Shore Cryotronics Inc t 614 891 2244 f 614 818 1600 e info lakeshore com www lakeshore com Flux Technology Model 450 Flux Measurement Technology 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 63 64 and 65 for more information about available Helmholtz and search coils Model 480 rear panel Line input assembly Serial 1 0 interface EEE 488 interface Terminal block for relays and analog signals coi input for user coils Probe input for Lake Shore probes SHT AM TA Li SPN ALI PPO C1 DTO CO Ei Helmholtz and search coils Coils and probes wound by the user or fr
9. w 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 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 li
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