Altek Industries 334A Loop Calibrator has been designed to check, calibrate, and troubleshoot all the signals present within a standard 4 to 20 milliamp process control loop. A 24 mA source, mA meter, Two wire transmitter simulator, and a DC volt meter are combined into one easy-to-operate instrument.
The Altek Industries 334A may also be used when a controller is temporarily removed for repair or replacement. Simply substitute the Model 334A for the controller and use it as a manual loading station. Bench-top accuracy in a toolbox calibrator assures fast, precise setting of current trips, recorders, controllers, loggers, computers, and final control elements.
Dual current ranges allow display of each current function in percent of 4 to 20 mA signal, as well as directly in milliamps. Power and measure two wire transmitters simultaneously in Source Mode. The Altek Industries 334A supplies the required voltage and displays the current as regulated by the 2-wire transmitter.
- 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—
3×9 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.
