DGH Corporation, D1221, D1200 Current Input Module, 1mA/RS-232
Features:
- Two open-collector digital outputs or (HI/LO alarms)
- One digital input/60 Hz events counter
- ASCII format command/response protocol
- 500V rms analog input isolation
- 15 bit measurement resolution
- Continuous self-calibration; no adjustments of any kind
- Programmable digital filter
- Digital limit setting and alarm capability
- Digital inputs and outputs connect to solid state relays
- Events counter to 10 million
- Requires +10V to +30Vdc unregulated supply
- Screw terminal plug connectors supplied
The D1200 current input modules contain an isolated 15-bit analog to digital converter and measure DC current with full scale input ranges from +/-1mA to +/-1Amp, including 4-20mA. Each module is hardware optimized for the best measurement performance over the full-scale input range. The module performs all signal conditioning, analog to digital conversion and linearizes the digital data into scaled engineering units.
The D1200 current input modules include one discrete digital input and two open-collector digital outputs for monitoring On/Off signals or controlling solid-state relays and annunciators. The digital outputs can also be programmed to operate as HI/LO alarm outputs based on the input current level.
The digital outputs can be pulled up to +30Vdc and sink up to 30mA without damage. The discrete digital input contains an internal pull up resistor and can accept +/-30Vdc signals without damage. The input switching levels are <+1Vdc = logic "0", >+3.5Vdc equals a Logic "1".
The D1200 current input modules can be mounted on a DIN-Rail using the MK-1 mounting kit.
For more information, please see 
Data Sheet
