DPM 500 is a three-and-a-half-inch LCD multimeter from DPM, Germany. It has auto-zero, auto-polarity, 0.05% (±1 count) measurement accuracy, a power range of 7.5-9V, and a backlight voltage of 5V.
This manual covers the DPM 500 3% digit LCD module, describing its compact construction, optional backlit single‑rail version, and how to mount the unit in a panel. It includes dimensions, safety limits, and wiring details.
Detailed sections explain pin assignments, on‑board links for mode selection, backlight operation, and special notes on annunciators, as well as technical specifications such as full‑scale reading, sample rate, temperature range, and backlight current.
| Digit Height | 12.5mm (0.5”) |
|---|---|
| Full Scale Reading | 200 mV d.c. |
| Sample Rate | 3 samples per second |
| Operating Temperature Range | 0 °C to 50 °C |
| Temperature Stability | 100 ppm/°C |
| Maximum Input Voltage | 60 V dc |
| Backlight Voltage | 5 V dc |
| Backlight Current | Typical 30 mA |
The input voltages to the module’s pins must not exceed 60 V dc.
Apply 5 V dc to the backlight tab on the side of the meter; the typical current is 30 mA.
The full‑scale reading is 200 mV d.c.
It operates from 0 °C to 50 °C.