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Altek 334A Loop Calibrator
Part Number:
ALTK 334A
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Price:
$939.00 
USD (change)
USD (change) 
The Altek 334A Loop Calibrator will check, calibrate and measure all your current signal instruments in a 4 to 20 milliamp DC loop. Use at every point in your loop. Source & Read 0.00 to 24.00 mA, Simulate a 2-wire transmitter or use the Loop Calibrator to simultaneously power & measure your 2-wire transmitters. Toggle the
display to show milliamps or percent of 4 to 20.
Calibrate recorders, digital indicators, stroke valves or any other instruments that get their input from a 4 to 20 mA loop. Easily set any value to within 0.01 mA with the speed sensitive digital potentiometer.
The “Quik-Chek” switch provides rapid checking of 4.00, 20.00 and a third point between 0.00 to 24.00 mA.
Check loop wiring and receivers by using the Altek 334A Loop Calibrator in place of a 2-wire transmitter. Simulate a changing process input to check loop response and
control settings. The Altek 334A uses any loop power from 3 to 45V DC.
Check controller outputs or measure the milliamp signal anywhere in the loop. The Altek 334A Loop Calibrator measures 0.00 to 24.00 mA signals with much greater
accuracy than a typical multimeter. Toggle the display to show milliamps or percent of 4 to 20.
Simultaneously measure the output of a 2-wire transmitter while using the internal batteries to supply up to 27V DC to power the transmitter. Handy for checking transmitters in the field or on the bench.
Measure from -99.99 to +99.99 VDC with 10mV resolution. Use it to check loop power supplies, I/V converters, 1 to 5 Volt signals and battery voltages.
What's Included:
display to show milliamps or percent of 4 to 20.
Calibrate recorders, digital indicators, stroke valves or any other instruments that get their input from a 4 to 20 mA loop. Easily set any value to within 0.01 mA with the speed sensitive digital potentiometer.
The “Quik-Chek” switch provides rapid checking of 4.00, 20.00 and a third point between 0.00 to 24.00 mA.
Check loop wiring and receivers by using the Altek 334A Loop Calibrator in place of a 2-wire transmitter. Simulate a changing process input to check loop response and
control settings. The Altek 334A uses any loop power from 3 to 45V DC.
Check controller outputs or measure the milliamp signal anywhere in the loop. The Altek 334A Loop Calibrator measures 0.00 to 24.00 mA signals with much greater
accuracy than a typical multimeter. Toggle the display to show milliamps or percent of 4 to 20.
Simultaneously measure the output of a 2-wire transmitter while using the internal batteries to supply up to 27V DC to power the transmitter. Handy for checking transmitters in the field or on the bench.
Measure from -99.99 to +99.99 VDC with 10mV resolution. Use it to check loop power supplies, I/V converters, 1 to 5 Volt signals and battery voltages.
What's Included:
- Attached test leads with alligator clips
- Data Sheet on 334A
- Manufacturer's Statement of Calibration Practices
- Three Year Warranty
- Padded carrying case with shoulder strap & belt loop
The Good:
The Bad:
The Bottom Line:
The Bad:
The Bottom Line:
Full Review
- All 4 to 20 mA Loop Functions — Source 0.00 to 24.00 mA or -25.0 to 125.0% read mA or percent to 52.00 mA, simulate 2-wire transmitters, measure -99.99 to 99.99 volts DC power & read 2-wire transmitters.
- Quik-Chek Switch — Select 4 or 20 mA output or 2-wire simulation. Accurate to ±0.006 mA.
- Full Range 10 Microamp Resolution — Adjust 4 digit display to ±0.05% without range change.
- Long Battery Life — x9 volt alkaline batteries source 20 mA for over 20 hours, 12 mA for over 33 hours; 2-wire simulate and read for 150 hours. Much longer than NiCd batteries or calibrators with a single 9 V battery!
- Drive Capability — 1200 Ohms with current limited, fuseless protection to 135 V AC/DC.
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