No longer available — please consider the Model 475 as an alternative.

Model 455 Specifications

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 kG00.0001 kG 00.001 kG 00.01 kG
3.5 kG0.00001 kG 0.0001 kG 0.001 kG
350 G000.003 G 000.02 G 000.1 G
35 G00.0030 G 00.015 G 00.04 G
HSE probe
35 kG00.0001 kG 00.001 kG 00.01 kG
3.5 kG0.00001 kG 0.0001 kG 0.001 kG
350 G000.001 G 000.01 G 000.1 G
35 G00.0003 G 00.002 G 00.01 G
3.5 G0.00030 G 0.0015 G 0.004 G
UHS probe
35 G00.0001 G 00.001 G 00.01 G
3.5 G0.00001 G 0.0001 G 0.001 G
350 mG000.003 mG 000.02 mG 000.1 mG
35 mG00.0030 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 Hz100 Hz
Time constant:1 s 0.1 s 0.01 s
Maximum reading rate :10 rdg/s 30 rdg/s30 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 kG00.001 kG
3.5 kG0.0002 kG
350 G000.02 G
35 G00.020 G
HSE probe
35 kG00.001 kG
3.5 kG0.0001 kG
350 G000.02 G
35 G00.002 G
3.5 G0.0020 G
UHS probe
35 G00.001 G
3.5 G0.0002 G
350 mG000.02 mG
35 mG00.020 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 kG00.001 kG
3.5 kG0.0002 kG
350 G000.02 G
35 G00.020 G
HSE probe
35 kG00.001 kG
3.5 kG0.0001 kG
350 G000.02 G
35 G00.002 G
3.5 G0.0020 G
UHS probe
35 G00.001 G
3.5 G0.0002 G
350 mG000.02 mG
35 mG00.020 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.