Martindale CM84 AC/DC Clamp Meter
Test more with the CM84, the upgraded version of Martindale's CM82 clamp meter!
The main difference between the two testers is that the CM84 is both an AC and DC clamp, whereas the CM82 is only AC. It can test AC current from 400A to 1000A and also tests DC current across the same range, with both measurements carried out with high levels of accuracy.
It doesn't stop there either; the CM84 has a built-in multimeter so it can calculate DC voltage to 1000V, AC voltage to 750V, resistance to 40MΩ, frequency to 1MHz and continuity/diode testing.
The CM84 has 57mm jaws and is CAT IV 600V and CAT III 1000V rated.
Martindale CM84 AC/DC Clamp Meter Key Features
- Measurements of AC and DC current to 1000A
- DC voltage measurements to 1000V
- AC voltage measurements to 750V
- Resistance measurements to 40MΩ
- Frequency measurements to 1MHz
- Continuity/diode test
- 57mm jaws
What's Included?
- Martindale CM84 AC/DC Clamp Meter
- Carrying Case
- TL16 Test Leads
- 9V PP3 Battery (Installed)
- Instructions
Martindale CM82 Technical Specifications
All specified accuracies are at 23°C ± 5°C, <70% RH for 1 year
Temperature Coefficient: 0.1 x (specified accuracy) per °C (0°C to 18°C, 28°C to 50°C)
All accuracies below are expressed as ± (percentage of reading + digits)
| DC Voltage | |||
|---|---|---|---|
| Range | Resolution | Input Impedance | Accuracy |
| 400mV | 0.1mV | >100MΩ | 0.5% + 2 |
| 4V | 0.001V | 10MΩ | |
| 40V | 0.01V | 9.1MΩ | |
| 400V | 0.1V | ||
| 1000V | 1V | ||
| AC Voltage | |||
| Range | Resolution | Input Impedance | Accuracy (50Hz to 500Hz) |
| 400mV | 0.1mV | >100MΩ | Not specified |
| 4V | 0.001V | 10MΩ | 1.5% + 5 |
| 40V | 0.01V | 9.1MΩ | |
| 400V | 0.1V | ||
| 750V | 1V | ||
| AC Current | |||
| Range | Resolution | Accuracy 50Hz to 60Hz/60 to 400Hz |
|
| 40A | 0.01A | 2.0% + 6 3.0% + 6 |
|
| 400A | 0.1 | ||
| 1000A | 1A | 2.0% + 6 (≤600A) 2.5% + 6 (>600A) 3.0% + 6 (≤600A) 3.5% + 6 (>600A) |
|
| DC Current | |||
| Range | Resolution | Accuracy | |
| 400A | 0.1A | 2.0% + 5 | |
| 1000A | 1A | 2.0% + 5 (≤600A) 3.0% + 5 (>600A) |
|
| Resistance | |||
| Range | Resolution | Open Circuit Voltage | Accuracy |
| 400Ω | 0.1Ω | -1.2V DC | 1.0% + 5 |
| 4kΩ | 0.001kΩ | -0.45V DC | |
| 40kΩ | 0.01kΩ | ||
| 400kΩ | 0.1kΩ | ||
| 4MΩ | 0.001MΩ | 2.0% + 5 | |
| 40MΩ | 0.01MΩ | 3.5% + 5 | |
| Capacitance | |||
| Range | Resolution | Accuracy | |
| 4nF | 0.001nF | Not specified | |
| 40nF | 0.01nF | ||
| 400nF | 0.1nF | ||
| 4μF | 0.001μF | 3.0% + 15 | |
| 40μF | 0.01μF | 3.0% + 10 | |
| 400μF | 0.1μF | ||
| 4mF | 0.001mF | 5.0% + 10 | |
| Frequency | |||
| Range | Resolution | Accuracy | |
| 4kHz | 0.001kHz | 0.1% + 3 | |
| 40kHz | 0.01kHz | ||
| 400kHz | 0.1kHz | ||
| 1MHz | 0.001MHz | ||
(further tech specs in attached datasheet/manual)
| SKU | MARCM84 |
|---|---|
| Manufacturer Part Code | MARCM84 |
