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 All Categories    Multifunction Calibrator - Altek
Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
All Categories > Test Equipment > Altek Process Calibrators > Multifunction Calibrator - Altek > Item # AL/820E  
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Item # AL/820E, TechChek Multifunction Calibrator with Carrying Case

Multifunction Calibrator

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  • Calibrate Milliamps, Battery Life 50hr simulate, 20hr source (AA batteries supplied) Volts & Frequency
  • Check Thermocouple & RTD Sensors
  • Use in Place of a DMM for ACV & Ohms
  • Simulate 2-Wire Transmitters
The deluxe Model 820E combines the functions of the 111, 322-1, 334A and 235 calibrators in one compact unit. It also performs frequency calibration and extended voltage measurements.

Batteries & three year warranty included

Specifications · Function


Simulate Range

3 to 45V

ma Compliance

25V (max 1.9V burden at 24mA)

Transmitter Drive

1200ohm at 20mA typical, Power & Measure mode

Battery Life

50hr simulate, 20hr source (AA batteries supplied)


mA Source/Measure

0.00 to 24.00mA, -18.8 to 125.0% of 4 to 20mA, Accuracy: ±0.05% of FS ± 1d


0.00 to 110.00mV DC (20mA max source/sink), Accuracy: ±0.05% of FS ± 1d


0.00 to 10.25V DC (20mA max source/sink), Accuracy: ±0.05% of FS ± 1d

V (Measure Only)

0.0 to 200.0V DC, Accuracy: ±2% of FS ± 1d

VAC (Measure Only)

0.0 to 250.0V AC TRMS, Accuracy: ±2% of FS ± 1d


J, K, T, E, Accuracy: ±2% typical


100ohm Pt, 385 alpha (2mA max), Accuracy: ±1°C


0 to 400.0ohm source, 0 to 1000.0ohm measure, Accuracy: ±0.06ohms


1-1000 CPM, 1-1000 Hz, 0.01-10.00 kHz, Accuracy: ±0.05% of FS ± 1d


 width= Altek Process Calibrators Catalog Page
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