GPS-230 / GPS-232
GPS-230 & GPS-232 Mini Clamp Meters
23 mm jaw · up to 400 A · auto-ranging
Two auto-ranging clamp meters built around a 23 mm jaw, small enough to get between conductors in a crowded panel where a full-size clamp will not fit. Current is read without breaking the circuit, and voltage, resistance, continuity and diode testing are on the leads.
GPS-232 · AC and DC, 4000 counts
Built for the panel, not the bench
A digital multimeter will not carry 10 A for more than about thirty seconds without damage. A clamp reads the same current from outside the insulation, with nothing disconnected and nothing in series.
0.9 in (23 mm) jaw
Small enough to get between conductors in a crowded board, where a full-size clamp will not fit.
Up to 400 A
AC on both models, AC and DC on the GPS-232, read without breaking the circuit.
1 mA resolution
Four AC ranges on the GPS-230 resolve to 1 mA, for tracing small loads and confirming a dead circuit.
Zero for low-level DC
The GPS-232 nulls the display before a DC reading, which matters at the bottom of the range.
Capacitance and frequency
The GPS-232 adds 100 µF and 150 kHz with duty cycle, for motor, control and HVAC faults.
Backlit, holds, sleeps
Backlit display, data hold, low battery indication and auto power off on both models.
Which model?
Same jaw, same case, same batteries. The question is whether you need DC current and the extra measurement functions.
| Model | Current | AC ranges | Best resolution | Counts | Extra key | Also measures |
|---|---|---|---|---|---|---|
| GPS-230 | AC | 2.000 / 20.00 / 200.0 / 400 A | 1 mA | 2000 | Max hold | — |
| GPS-232 | AC and DC | 40.00 / 400.0 A | 10 mA | 4000 | Zero for DC | Capacitance, frequency, duty cycle |
The GPS-230 resolves ten times finer on AC current, so it is the better choice for small loads. The GPS-232 trades that for DC measurement, a 4000-count display and the capacitance, frequency and duty cycle functions.
Technical specifications
| Specification | GPS-230 | GPS-232 |
|---|---|---|
| Current measurement | AC | |
| AC current ranges | 2.000 / 20.00 / 200.0 / 400 A | 40.00 / 400.0 A |
| AC current resolution | 0.001 / 0.01 / 0.1 / 1 A | 0.01 / 0.1 A |
| AC current accuracy | ±(3.0% + 4 digits) | |
| DC current ranges | — | 40.00 / 400.0 A |
| DC current accuracy | — | ±(2.5% + 5 digits) |
| DC voltage | 600 V · ±(0.5% + 1 digit) | |
| AC voltage | 600 V · ±(1.5% + 2 digits) | |
| Resistance | 20 MΩ · ±(3.0% + 5 digits) | 40 MΩ · ±(3.0% + 5 digits) |
| Capacitance | — | 100 µF · ±(2.5% + 5 digits) |
| Frequency | — | 150 kHz · ±(1.2% + 2 digits) |
| Duty cycle | — | 0.5 to 99.0% |
| Continuity | Buzzer sounds below 100 Ω | |
| Diode test | 0.3 mA test current · 1.5 V open circuit | |
| Display | 2000 counts, backlit | 4000 counts, backlit |
| Data hold | Yes | Yes |
| Max hold | Yes | — |
| Zero function for DC current | — | Yes |
| Auto power off · low battery | Yes | Yes |
| Jaw size | 0.9 in (23 mm) | |
| Safety | EN 61010-1, EN 61010-2-031 and EN 61326 · CAT III 600 V · CE, EMC and LVD · pollution degree 2 | |
| Power | 2 × 1.5 V AAA alkaline | |
| Dimensions · mass | 200 × 50 × 47 mm · 0.2 kg approx. | |
Where they are used
Distribution boards
Crowded consumer units and control panels where the conductors are close together and a large jaw cannot be threaded in.
HVAC and refrigeration
Compressor and fan currents, capacitor checks on the GPS-232, and continuity on control wiring.
Automotive and EV
DC current on the GPS-232 with the zero function, for battery, charging and traction circuits.
PV and battery systems
String and battery currents in DC, and AC on the inverter side, from one instrument.
What’s in the box
- Clamp meter, model as ordered
- Test leads
- Two 1.5 V AAA batteries
- Carrying case, supplied in a gift box
Neither model measures temperature. Calibration certification is available on request; ask us to quote a traceable certificate with the instrument.