Benning CM11

[testian]

Just some Impressions from the Benning CM11 Clamp Meter.

It feels not as solid and high quality as i hoped, but it is one of only a few meters which can measure mA without disconnecting the circuit. The meter is power by two AAA batteries supposed to last 30 - 100 hours. Depending on usage mode and backlight.

Although it is not the smallest device,


the holster is still a bit too large.


The Measurement leads are average, but i trust them their rating. Overall length is 140cm. AWG 18


I can't comment on the input protection. The only thing i can say that there is some build in.


For the measurements there is nothing to complain, except the slow continuity test.


But the measurement for 0-200mA signals is quite reliable. The value does not drift much and opening/closing the clamp has only a low impact. It seems to use some active technology, because it makes a slight humming sound when in DC ampere mode.


Specs:
DC current range:

Measuring range	Resolution	Measurement accuracy	Overload protection
300.0 mA	0.1 mA	± (1.0 % of reading + 10 digits)100 A AC/DC
0.300 A - 3.000 A	1 mA	± (1.0 % of reading + 10 digits)100 A AC/DC
3.00 A - 10.00 A	10 mA	± (3.0 % of reading + 10 digits)100 A AC/DC

AC current range:

Measuring range	Resolution	Measurement accuracy	Overload protection
300.0 mA	0.1 mA	± (1.0 % of reading + 5 digits)100 A AC/DC
0.300 A - 3.000 A	1 mA	± (1.0 % of reading + 5 digits)100 A AC/DC
3.00 A - 10.00 A	10 mA	± (3.0 % of reading + 5 digits)100 A AC/DC

DC voltage range (The input resistance is ≥ 2 MΩ.):

Measuring range	Resolution	Measurement accuracy	Overload protection
60.00 V	0.01 V	± (1 % of reading + 2 digits)	660 V AC/DC
60.0 V - 600.0 V	0.1 V	± (1 % of reading + 2 digits)	660 V AC/DC

AC voltage range:

Measuring range	Resolution	Measurement accuracy	Overload protection
60.00 V	0.01 V	± (1.2% of reading + 5 digits)	660 V AC/DC
60.0 V - 600.0 V	0.1 V	± (1.2 % of reading + 5 digits)	660 V AC/DC

Rating: 1000 V CAT III, 600 V CAT IV