Brymen BM137ma clamp meter
Details
The Brymen BM137ma is a premium clamp meter, suitable for all current and maintenance work on automotive, appliance, HVAC and electronics circuits. This clamp meter uses the patented AmpTip jaws to read currents down to 0.001A right at the jaw tip, so even thin conductors and sub-ampere loads are measured accurately, while the jaw centre handles up to 200A AC and DC. On top of the core functions, the meter adds capacitance for motor capacitors, type-K temperature and a low DCµA range for HVAC flame sensors. True-RMS sensing, a direct LPF mode for variable frequency drives, and dual sensitivity EF detection complete a meter rated to CAT III 600V and CAT IV 300V with 6kV transient protection.
Model overview
| Model | BM135ma | BM137ma |
|---|---|---|
| Resistance | 600 Ω - 6 kΩ | 600 Ω - 6 MΩ |
| Capacitance | No |
2500 µF |
| Temperature | No |
-40 - 400 °C |
| Low current | No |
2000 µA |
| Frequency | No |
5 - 999.9 Hz |
| Price |
Specifications
| Display resolution | 6000 counts, 3-5/6 digits |
| Measurement rate | 5 per second |
| AC/DC current (jaw) | 30 A / 200 A |
| AC/DC current (AmpTip) | 3 A / 30 A, from 0.001 A |
| AC voltage | 600 V |
| DC voltage | 60 V / 600 V |
| True-RMS | Yes |
| EF detection | Non-contact (NCV) and probe contact, dual sensitivity |
| Other functions | BeepLit continuity, diode, MAX hold, data hold, relative |
| Max conductor | 26 mm |
| Safety rating | CAT III 600 V, CAT IV 300 V |
| Transient protection | 6 kV |
| Power | 2x AAA battery |
| Display | Backlit LCD |
| Dimensions | 188 x 66 x 32 mm |
| Weight | 202 g |
Accessories
The BM137ma comes with:
- Test lead set
- Type-K thermocouple
- Soft carrying pouch
Pros and cons
- Capacitance, type-K temperature and low current measurement
- AmpTip jaws for thin conductors
- LPF mode for variable frequency drives
Downloads
| Brymen BM130 series datasheet |  (692.28 KB) | Download |
| Brymen BM130 series manual | (2.06 MB) | Download |
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