Clamp Meters: Martindale CM1000 pages

SpeciÀcation
CM100
Flexible Current Meter

Note 1: Measurement accuracy assumes a centrally positioned conductor, no
external electrical or magnetic eld and within operating temperature range.
See gure 2 and the position sensitivity error table below for additional errors
where the conductor is not centrally positioned.

Position from
loop centre
(refer to gure 2)
A

Resolution

30 A

0.01 A

300 A

0.1 A

3000 A

Accuracy (45 Hz to 500 Hz)

1A

± (3.0 % of rdg + 5 dgts) Note 1

AC conversion: True rms.
True rms AC current accuracy is specied from 2 % of range to 100 % of
range.
Crest factor: d 1.6 at full scale (30.00A/300.0A/3000A).
d 3.2 at half scale (15.00A/150.0A/1500A).

2” (5.1cm)

C

Range

1” (2.54cm)

B

ELECTRICAL
All specied accuracies are at 23°C ± 5°C, <80% RH for 1 year.
Temperature Coefcient: 0.1 x (specied accuracy) per °C. (0°C to 18°C, 28°C
to 40°C).

Distance

3” (7.6cm)

3.0 %

CM100/18

CM100/60

Error

Distance

Error

1.0 %

3” (7.6cm)

2.0 %

2.0 %

6” (15.2cm)

3.0 %

9” (22.9cm)

4.0 %

ENVIRONMENTAL
Operating environment: 0°C to 50°C, <80% RH, non-condensing
Storage temperature: -10°C to 60°C, 70% RH
Altitude: Up to 2000m
GENERAL
Display: Liquid crystal display with a maximum reading of 3150 digits.
Overrange: “–OL–” is displayed
Low battery indication: symbol is displayed when the battery voltage drops
below the operational level
Sampling rate: 2 times per second.
Auto power off: After approx. 15 minutes
Power: 2 x 1.5 V AAA batteries (IEC LR03, NEDA 24A)
Battery life: 120 hours typical with alkaline
Dimensions:
Meter: 120mm (L) x 70mm (W) x 26mm (D)
Probe cable length: 457mm (CM100/18), 1524mm (CM100/60)
Probe cable diameter: 8.5mm nominal
Cable length (probe to meter): 1.8m
Weight: 286g approx. including batteries
Includes: 2 x 1.5V AAA batteries and instructions