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 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 | 00.0030 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 | 0.00030 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 | 00.0030 mG | 00.015 mG | 00.04 mG |
Measurement resolution (RMS noise floor): Indicated by value in above table for shorted input (probe effects not included); value measured as peak-to-peak divided by 6.6
Display resolution: Indicated by number of digits in above table
| | 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 | 30 rdg/s |
DC accuracy: ±0.075% of reading ±0.005% of range
DC temperature coefficient: ±0.01% of reading ±0.003% of range per °C
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 |
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 = 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
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 |
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 µs or longer pulse width)
Peak frequency range (periodic mode): 50 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 × 20-character, vacuum fluorescent with 9 mm high characters
Display resolution: To ±5¾ digits
Display update rate: 5 rdg/s
Display units: Gauss (G), Tesla (T), Oersted (Oe), and Ampere per meter (A/m)
Units multipliers: µ, m, k, M
Display annunciators :
| | 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 |
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
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
Software support: LabVIEWTM 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: 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 = ±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 kΩ (short-circuit protected)
Connector: Shared 25-pin I/O 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 kΩ (short-circuit protected)
Connector: Shared 25-pin I/O connector
Voltage output 3
Configuration: Voltage output of compensated DC or RMS 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 kΩ (short-circuit protected)
Connector: Shared 25-pin I/O 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 × 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
Probes & extensions
Probe compatibility: Full line of standard and custom probes available — 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 455 probe.
The uncalibrated version involves the operator leading 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 1ºC temperature reading error.