| 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 |
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| DC Measurement |
| Probe Type Ranges |
5¾-digit
Resolution |
4¾-digit
Resolution |
3¾-digit
Resolution |
| HST Probe |
| 350 kG |
000.001 kG |
000.01 kG |
000.1 kG |
| 35 kG |
00.0001 kG |
00.001 kG |
00.01 kG |
| 3.5 kG |
0.00001 kG |
0.0001 kG |
0.001 kG |
| 350 G |
000.003 G |
000.02 G |
000.1 G |
| 35 G |
00.0020 G |
00.015 G |
00.04 G |
| HSE Probe |
| 35 kG |
00.0001 kG |
00.001 kG |
00.01 kG |
| 3.5 kG |
0.00001 kG |
0.0001 kG |
0.001 kG |
| 350 G |
000.001 G |
000.01 G |
000.1 G |
| 35 G |
00.0003 G |
00.002 G |
00.01 G |
| 3.5 G |
0.00020 G |
0.0015 G |
0.004 G |
| UHS Probe |
| 35 G |
00.0001 G |
00.001 G |
00.01 G |
| 3.5 G |
0.00001 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 |
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Measurement resolution (RMS noise floor): Indicated by value in above table for shorted input
Display resolution: Indicated by number of digits in above table |
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5¾-digit
Resolution |
4¾-digit
Resolution |
3¾-digit
Resolution |
| 3 dB bandwidth: |
1 Hz |
10 Hz |
100 Hz |
| Time constant: |
1 s |
0.1 s |
0.01 s |
| Maximum reading rate : |
10 rdg/s |
30 rdg/s |
100 to 1000 rdg/s* |
| *Limited feature set, interface dependent |
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DC accuracy: ±0.05% of reading ±0.005% of range
DC temperature coefficient: ±0.01% of reading ±0.003% of range per °C |
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| AC RMS Measurement |
| Probe Type Ranges |
4¾-digit Resolution |
| HST Probe |
| 350 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 |
00.001 kG |
| 3.5 kG |
0.0001 kG |
| 350 G |
000.02 G |
| 35 G |
00.002 G |
| 3.5 G |
0.0020 G |
| UHS Probe |
| 35 G |
00.001 G |
| 3.5 G |
0.0002 G |
| 350 mG |
000.02 mG |
| 35 mG |
00.020 mG |
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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)
AC accuracy: ±1% of reading ≥1% of full scale range
AC frequency range: 1 Hz to 1 kHz, narrow band mode‚ 50 Hz to 20 kHz, wide band mode
AC band limiting (filters): 18 user selected frequencies of 3 low-pass or 15 band-pass |
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| Peak Measurement |
| Probe Type Ranges |
4¾-digit Resolution |
| HST Probe |
| 350 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 |
00.001 kG |
| 3.5 kG |
0.0001 kG |
| 350 G |
000.02 G |
| 35 G |
00.002 G |
| 3.5 G |
0.0020 G |
| UHS Probe |
| 35 G |
00.001 G |
| 3.5 G |
0.0002 G |
| 350 mG |
000.02 mG |
| 35 mG |
00.020 mG |
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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 reading ≥1% of full scale range
(20 µs or longer pulse width)
Peak accuracy (20 kHz to 50 kHz): ±5% of reading ≥1% of full scale range
(20 µs or longer pulse width)
Peak frequency range (periodic mode): 50 Hz to 5 kHz
Peak frequency range (pulse mode): 5 Hz to 50 kHz |
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| Temperature Measurement |
Temperature range: Probe dependent (typically 0 °C to
75 °C )
Measurement resolution: 0.01 °C
Electronic accuracy: ±0.7 °C |
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| Front Panel |
Display type: 2 line × 20 character, vacuum fluorescent with 9 mm high characters
Display resolution: To ±5¾ digits
Display update rate: 5 rdg/s
Display units: Gauss (G), Telsa (T), Oersted (Oe), and Ampere per meter (A/m)
Units multipliers: µ, m, k, M
Display annunciators : |
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DC - DC measurement mode
RMS - AC RMS measurement mode
PK - Peak measurement mode
MX - Max Hold value
MN - Min Hold value
SP - Relative setpoint value
CSP - Field Control setpoint value |
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| LED annunciators : |
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Relative - Relative reading mode
Alarm - Alarm active
Remote - Remote IEEE-488 operation |
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Keypad: 22 full travel keys
Front panel features: Display prompts, front panel lockout, and brightness control |
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| Interfaces |
RS-232C
Baud: 9600, 19200, 38400, and 57600
Update rate: 30 rdg/s (ASCII)
Software support: LabVIEWTM driver
Connector: 9-pin D-style, DTE configuration
IEEE-488.2
Capabilities: SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT1, C0, and E1
Update rate: 30 rdg/s (ASCII), to 100 rdg/s (binary, no temperature compensation)
Software support: LabVIEWTM 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 annuciator, 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: In 25-pin I/O connector
Voltage output 1
Configuration: Real-time analog voltage output of wide band AC signal
Range: ±3.5 V
Scale: ±3.5 V = ±FS on selected range
Frequency Response: 1 Hz to 40 kHz (wide band AC)
Accuracy: Probe dependent
Noise: ±1.0 mV
Minimum load resistance: 1 kW (short-circuit protected)
Connector: In 25-pin I/O connector
Voltage output 2
Configuration: Voltage output of field value, generated by DAC
Range: ±5 V
Scale: ±3.5 V = ±FS 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 kW (short-circuit protected)
Connector: In 25-pin I/O connector
Voltage output 3
Configuration: Voltage output of compensated 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 kW (short-circuit protected)
Connector: In 25-pin I/O connector |
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| 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 × 89 mm H × 318 mm D (8.5 in × 3.5 in × 12.5 in), half rack
Weight: 3 kg (6.6 lb)
Approval: CE mark |
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| Probes & Extensions |
Probe compatibility: Full line of standard probes available – custom probes also available (not compatible with Model 450/421 probes) – More information on Probe compatibility
Hall sensor compatibility: Front panel programmable sensitivity and serial number for user supplied Hall sensor – More information on Hall sensor compatibility
Extension cable compatibility: Calibrated or uncalibrated probe extension cables with an EEPROM are available from
10 ft to 100 ft – More information on Extension cable compatibility
Lake Shore calibrated extension cables maintain the same accuracy as the Model 475 probe.
The uncalibrated version involves the operator leading the matching probe data file into the cable PROM directly from the Model 475 front panel. Additional errors caused by the uncalibrated extension cables are ±0.2% of field reading error and 1ºC temperature reading error. |
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