Testo 770-1 TRMS Clamp Meter
The Testo 770-1 Hook-clamp Digital Multimeter (DMM) is ideally suited for electrical work in HVAC applications. Testo’s unique hooking clamp can be used to separate then grab wires. The easy hook-off retractable post releases the wires when testing is complete. You can safely work in tight spaces without using your hands.
Features
- Unique hook-on function separates and grabs wires without using your hands
- Retractable post makes hook release fast and easy
- Meter automatically identifies testing in-process and selects correct meter configuration to save time and optimize accuracy
- Inrush (starting) current capture, APO (Auto Power Off, and Min/Max/Hold)
Overview
The 770 series identifies the testing in-process and automatically selects the correct meter configuration which saves you time and increases your accuracy. The 770 series of instruments are rich in the features HVAC techs need and want including TRMS, starting current, and frequency measurement.
| DC voltage | |
| Resolution | 4.000 V / 1 mV |
| 40.00 V / 10 mV | |
| 400.0 V / 100 mV | |
| 600 V / 1 V | |
| Accuracy | ±(0.8 % of mv + 3 Digit) |
| AC voltage | |
| Resolution | 4.000 V / 1 mV |
| 40.00 V / 10 mV | |
| 400.0 V / 100 mV | |
| 600 V / 1 V | |
| Accuracy | ±(1.0 % of mv + 3 Digit) |
| DC current | |
| Resolution | 400 A / 0.1 A |
| Accuracy | ±(2 % of mv + 5 Digit) |
| AC current | |
| Resolution | 400 A / 0.1 A |
| Accuracy | ±(2 % of mv + 5 Digit) |
| Resistance | |
| Resolution | 400.0 Ohm / 0.1 Ohm |
| 4.000 kOhm / 1 Ohm | |
| 40.00 kOhm / 10 Ohm | |
| 400.0 kOhm / 100 Ohm | |
| 4.000 MOhm / 1 kOhm | |
| 40.000 MOhm / 10 kOhm | |
| Accuracy | ±(1.5 % of mv + 3 Digit) |
| Capacitance | |
| Resolution | 51.20 nF / 0.01 nF |
| 512.0 nF / 0.1 nF | |
| 5.120 μF / 0.001 μF | |
| 51.20 μF / 0.01 μF | |
| 100 μF / 0.1 μF | |
| Accuracy | ±(1.5 % of mv + 5 Digit) |
| Frequency | |
| Resolution | 99.99 Hz / 0.01 Hz |
| 999.9 Hz / 0.1 Hz | |
| 9.999 kHz / 1 Hz | |
| Accuracy | ±(0.1 % + 1 Digit) |
| General technical data | |
| Warranty | 2 years |
| Storage temperature | 5° to 140 °F / -15 to +60 °C |
| Weight | 13 oz. / 378 g |
| Overvoltage Category | CAT IV 600V; CAT III 1000V |
| Authorizations | TÜV; CSA; CE |
| Dimensions | 10 x 4 x 2 in. / 243 x 96 x 43 mm |
| Operating temperature | 14° to 122 °F / -10 to +50 °C |
| Instrument and measurement functions | |
| Diode test | Yes |
| Continuity Testing | Yes |
| Display ligthing | Yes |
| Hold | Yes |
| MinMax | Yes |
| True RMS | Yes |
| Inrush current measurement | Yes |
| Display (counts) | 4,000 |
What’s Included?
- Testo 770-1 400 A with TRMS and Inrush
- 1 set of measuring cables
- Batteries
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