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 All Categories    Loop 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 > Loop Calibrator - Altek > Item # AL/334A  
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Item # AL/334A, Milliamp Loop Calibrator with Carrying Case

Milliamp Loop Calibrator with Carrying Case

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  • Source to 24mA, Read to 52mA
  • Measure to ±99.9V DC
  • Quickly Simulate 2-wire Transmitterss
The versatile 334A will check, calibrate and troubleshoot all the signals in a 4-20mA process control loop. Simultaneously power and measure two-wire transmitters up to 27V. Simulate the transmitter in circuits from 3 to 45V. Overload protected to 135VAC.

Batteries & three year warranty included



0.00 to 24.00mA, -25.0 to 125.0% of 4 to 20mA


0.00 to 52.00mA, -25.0 to 300.0% of 4 to 20mA


0-24mA: ±0.05% of reading ± 1 digit
Quik-Chek: ±0.03% of reading ± 0.01mA


1200ohm at 20mA with fresh batteries

Battery Life

100hr simulate, 20hr source from 9V batteries (supplied)


 width= Altek Process Calibrators Catalog Page
(PDF, 157KB)

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