ALTEK 334A LOOP CALIBRATOR

The Altek Model 334A 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 Model 334A 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. Features: 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 — 3x9 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.