Model 421 Gaussmeter
Contents
1. 001 G 0 01 G UHS Probe 30G 0 001 G 0 01 G 3G 0 0001 G 0 001 G 300 mG 0 01 mG 0 1 mG DC Accuracy 0 20 of reading 0 05 of range DC Temperature Coefficient 0 05 of reading 0 03 of range C AC RMS Measurement AC Display Resolution 334 digits Range Resolution HST Probe 300 kG 0 1 kG 30 kG 0 01 kG 3 kG 0 001 kG 300 G 0 1G HSE Probe 30 kG 0 01 kG 3 kG 0 001 kG 300 G 0 1G 30G 0 01 G UHS Probe 30G 0 01 G 3G 0 001 G 300 mG 0 1 mG AC Frequency Range 10 Hz 400 Hz AC Accuracy 2 of reading 50 Hz 60 Hz AC Frequency Response 0 to 3 5 of reading 10 Hz 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 readings per second Displays Units Gauss G Tesla T Units Multipliers u m k Annunciators RMS AC input signal DC DC input signal MAX Max Hold value A Relative reading R Remote operation Alarm on Keypad 12 key membrane Front Panel Features Intuitive operation display prompts front panel lockout brightness control 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 set point Inside Outside Audible Sort Act2. 3 40 006 0 010 10 005 Aluminum 3 kG 30 kG 30 kG 0 09 GPC 0 04 C 0 187 dia m 0 030 dia Fiberglass DC and MNA 1904 VH 4 10 125 10 005 0 005 0 003 approx epoxy 40 Hz to 400 Hz 0 C to 75 C 0 25 dia if s 300 G 3 kG 0 15 to 7 WaT MMA 2502 VG 2 0 063 40 006 0 010 0 005 Aluminum 30 kG 30 kG 0 13 GPC 0 005 C MNA 1904 VG 4 40 125 0 187 dia o 005 40 003 Fiberglass 0 005 epoxy By 2 5 L gt 7 A Transverse Probes amp BLakeShore w uw i F Cable length 0 36 diameter 6 6 feet 10 030 Temperature Temperature Corrected Operating n dE Model L T Ww A Active area Stem material Frequency Mao Tul accuracy temperature coeficient coemejent range scale ranges of reading rando maximum maximum H 9 9 Zero Calibration n 30 G 300 G 0 25 to 97 5 MMT 6J04 VH 4 10 125 0 061 max 0 180 0 005 Aluminum DC 3 kG 30 kG 30 kG 0 09 G C 0 04 C MNT 4E04 VH 4 40 125 0 045 max 0 150 0 005 0 150 40 050 0 940 dia Rigid glass agian 0 C to 75 C approx epoxy 10 Hz to 400 Hz 300 G 3 kG 0 15 to T PTS MMT 6J04 VG 4 0 125 0 061 max 0 180 0 005 Aluminum DC 30 kG 30 kG 0 13 GPC 0 005 C Rigid glass DC and MNT 4E04 VG 4 10 125 0 045 max 0 150 0 005 epoxy 10 Hz to 400 Hz 4B Y lt gt S gt A yw Flexible Transverse Probes 7s 0 125 diameter T lel 36 di max L 3 S 0 37
3. 5 gable nal opa lial Temperature Temperature j T Frequency Usable full Corrected Operating coefficient coefficient Model Ww T A Active area Stem material accuracy temperature 1 i range scale ranges of reading r nge maximum maximum m 9 9 Zero Calibration 0 040 dia s R DC and 30 G 300 G 0 25 to M 5 S rg MFT 3E03 VH 0 135 max 0 025 max 0 125 0 006 approx Flexible tubing 10 Hzto 400 Hz 3 kG 30 kG 30 kG 0 C to 75 C 0 09 GFC 0 04 C 300 G 3 kG 0 15 to S Ufa MFT 3E03 VG 30 kG 30 kG 0 13 GPC 0 005 C The Model 421 includes one of the Lake Shore probes listed above Please specify probe model number when ordering Model 421 Specifications General Measurement Number of Inputs 1 Update Rate 5 readings per second on display up to 18 readings per second with serial interface Probe Compatibility Standard and custom probes including Model 420 probes Probe Features Linearity Correction Auto Probe Zero Measurement Features Auto Range Max Hold Relative Mode Filter Probe Connector 15 pin D style DC Measurement DC Display Resolution 4 digits with filter 334 digits without filter Range Resolution w Filter Resolution w out Filter HST Probe 300 kG 0 01 kG 0 1 kG 30 kG 0 001 kG 0 01 kG 3kG 0 0001 kG 0 001 kG 300 G 0 01G 0 1G HSE Probe 30 kG 0 001 kG 0 01 kG 3kG 0 0001 kG 0 001 kG 300 G 0 01 G 0 1G 30G 0
4. Model 421 Gaussmeter Resolution to 434 Digits Large Vacuum Fluorescent Display Serial Interface Analog Voltage Outputs MaxHold and Relative Reading Alarm with Relay Product Description The Model 421 Hall Effect Gaussmeter is Lake Shore s answer to the dynamic changes in the permanent magnet industry Faster update higher resolution and more repeatable flux density measurements are being demanded by manufacturing quality assurance and R amp D The Model 421 is well suited to meet these requirements at an affordable price As an added advantage the Model 421 includes one of Lake Shore s Hall probes see following page for selection 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 Useability 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 Automation The Model 421 has a v
5. Rack mount kit for two 1 2 rack gaussmeters in 482 60 mm 19 rack MCBL 6 User programmable cable with PROM 6 long MPEC 10 Probe extension cable with EEPROM 10 long MPEC 25 Probe extension cable with EEPROM 25 long MPEC 50 Probe extension cable with EEPROM 50 long MPEC 100 Probe extension cable with EEPROM 100 long Extension cables must be matched to probes One Probe Included Additional probes ordered separately Custom Probes Available Consult Lake Shore for more information bal akeShore Lake Shore Cryotronics Inc 575 McCorkle Blvd Westerville Ohio 43082 8888 Tel 614 891 2244 Fax 614 818 1600 Email sales lakeshore com www lakeshore com Specifications subject to change without notice Lake Shore Cryotronics Inc 4210 7 99
6. ariety 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 includes one of Lake Shore s Hall probes see following page for selection This group of probes covers a wide variety of application requirements The Model 421 is also compatible with the extensive line of Lake Shore probes Lake Shore probes are factory calibrated for accuracy and interchangeability Calibration data is loaded into a PROM located in the probe connector so that it does not have to be entered by the user Lake Shore can also custom design a probe to meet your specific application requirements El akeShore 421 Gaussmeter Gauss Tesla Relative Normal Reading The Model 421 has a 2 line by 20 character vacuum fluorescent display with resolution to 434 digits The display can accomodate seven measurement ranges from 300 00 mG to 300 00 kG Measurements can be displayed in either gauss or tesla Max Hold On The largest field magnitude seen since the last max reset is displayed with the Max Hold function The maximum value is shown in the lower display while the upper display contains the live reading Alarm On The alarm gives an audible and visual indication of when the field value is selectively
7. outside or inside a user specified range An output relay facilitates pass fail actuation Sort On The sort function allows the Model 421 to display pass or fail when it is used during repetitive testing or sorting The live reading is shown in the upper display while the lower display contains the pass fail message 1 Line Input Assembly 2 Serial I O Interface 3 Corrected Analog Output 4 Monitor Analog Output 5 Probe Input 6 Relay Terminals Model 421 Rear Panel ok sex vonage 50 80 Hz 40VAMAX 220 240V 0 25 AT250V 6X20mm RELAY 30VDC 5A NC C NO l6 SERIAL I O DTE ANALOG OUTPUTS Monitor Corrected e WARNING NO USER SERVICEABLE PARTS INSIDE REFER C SERVICING TO TRAINED SERVICE PERSONNEL PROBE INP CAUTION POWER OFF TO MATE PROBE UT Axial Probes lt BLakeShore Q Hall Probes Em Cable length 0 36 diameter 6 6 feet 0 030 Temperature Temperature i P Frequency Usable full Corrected Operating coefficient coefficient Model L D A Active area Stem material accuracy temperature i range scale ranges of reading range maximum maximum 9 9 Zero Calibration i T 0 25 dia 30 G 300 G 0 25 to o A MMA 2502 VH 2 10 06
8. uators 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 kQ 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 per second Accuracy 0 35 Minimum Load Resistance 1 kQ short circuit protected Connector BNC General Ambient Temperature 15 35 C at rated accuracy 5 40 C with reduced accuracy Power Requirement 100 120 220 240 VAC 5 10 50 or 60 Hz 20 watts Size 217 mm W x 90 mm H x 317 mm D half rack 8 5 x 3 5 x 12 5 Weight 3 kg 6 6 Ibs Approval CE Mark Ordering Information Part number Description Instrument 421 Model 421 Gaussmeter plus one probe Specify line voltage and probe model number Accessories Included 106 741 Terminal block for relay outputs 115 006 Detachable line cord U S 4060 Zero gauss chamber MAN 421 Model 421 Gaussmeter User s Manual Accessories Available RM 1 2 Rack mount kit for one 1 2 rack gaussmeter in 482 60 mm 19 rack RM 2
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