The SP 100 is a 200mV DC measurement range, auto-zero and auto-polarity panel voltmeter. Decimal points can be user selectable. The SP 100 features a negative rail generator which enables the meter to measure a signal referenced to its own power supply 0V. The bright red LED display ensures excellent readability under low light conditions. It can be blanked in applications requiring low power operation. The module is easily fitted into the panel, using the fixing clip provided. The module's low cost means it will suit high and low volume applications. The design of the panel meter's housing and seal ensures splash proofing in many applications.
The SP 100 module provides a 200 mV d.c. full‑scale reading with auto‑zero and auto‑polarity, a bright red LED display and selectable decimal points. It includes a negative rail generator for measuring signals referenced to its own power supply and can be blanked for low‑power operation. The compact 9.4 mm digit height and splash‑proof housing make it suitable for panel‑mount applications.
Electrical specifications include 0.7 % overall accuracy, 2.5 samples/sec sample rate, 4.75‑5.25 V supply voltage and 50 mA @ +5 V supply current. Pin functions are detailed for power, display enable, reference voltage, measurement inputs and test modes. Safety compliance follows the Low Voltage Directive (LVD 93/68/EEC) with a maximum input voltage of 60 Vdc.
| Accuracy (overall error) | 0.7 % (+1 count) |
|---|---|
| Linearity | ±7 count |
| Sample rate | 2.5 samples/sec |
| Operating temperature range | 0 °C to 50 °C |
| Supply voltage | 4.75 V – 5.25 V |
| Supply current (DE connected to V+) | 50 mA |
The module operates from a supply voltage of 4.75 V to 5.25 V.
Leave the DE (Display Enable) pin unconnected; the display blanks and current drops to about 400 µA typical.
The Low Voltage Directive (LVD 93/68/EEC) requires input voltages not to exceed 60 Vdc.