DPM 342 is a 4-20mA loop powered indicator produced by Depew Electronics, Germany. The indicator has an accurate zero correction function and can display 4-20mA loop current.
The DPM 342 is a compact, loop‑powered indicator that displays 4‑20 mA current loop values with a backlit LCD. It features two multi‑turn calibration potentiometers, snap‑in bezel mounting, and simple screw‑terminal connections.
The manual covers technical specifications, connector sourcing, dimensions, step‑by‑step calibration, safety requirements, jumper‑link settings, and panel‑fitting instructions to ensure correct installation and reliable operation.
| Digit Height | 11 mm (0.43 in) |
|---|---|
| Accuracy (overall error) | 0.05 count |
| Linearity | 1 count |
| Sample rate | 3 samples/sec |
| Operating temperature range | 0 °C to 50 °C |
| Temperature stability | 200 ppm/°C |
| Loop voltage drop | 5 V to 6 V |
| Supply current | 4 mA |
| Full‑scale reading (20 mA) | 0 to 1999 Count |
| Offset adjustment range | ±950 Count |
The DPM 342 operates between 0 °C and 50 °C.
The device draws 4 mA from the loop.