The OEM035C is a complete digital current loop meter module for displaying engineering units from a 4-20mA transmitter. The meter is powered from the transmitter so no external power source is required. The transmitter loop is terminated by a low impedance and a zener diode holding the signal at 2.5V. this voltage powers the circuitry.
The OEM035C is a digital panel module that displays engineering units from a 4‑20 mA transmitter. It is panel‑mounted and can be fitted with an optional bezel. The module draws its power directly from the current loop, so no external power supply is required.
Key features include a 12.7 mm digit height, adjustable offset and span, selectable decimal point, and a screw terminal block for easy wiring. The guide provides electrical characteristics, pin assignments, a calibration procedure for K‑type thermotransmitters, and ordering information for optional accessories.
| Accuracy | 0.141 % + digit |
|---|---|
| Sampling Rate | 25 reading/sec |
| Zero Offset at 4 mA | -350 to 350 counts |
| Temperature Coefficient | 100 PPM/°C |
The module is powered directly from the 4‑20 mA current loop signal, so no external power source is required.
Pin 3 (DPS) selects the decimal point, Pin 4 (DP2) is on when connected to DP.com, and Pin 5 (DP1) is off when left floating.
First set 4 mA and adjust the offset pot for zero reading, then set 20 mA and adjust the span pot for the full‑scale reading, repeat for the low and high temperature points, and iterate for higher accuracy.