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Rev. 61657
Last modified 2019-12-05
P/N: CM44

CM44

Graphic
High-res image, RGB color space, 1000 px wide

General description
Part number
CM44
Part name
Professional 400A TRMS AC Clamp Meter + Type K
The FLIR CM44 Clamp Meter is a professional and affordable true RMS meter designed for commercial and residential electricians. The FLIR CM44 features AC clamp measurement to meet your unique needs. The meter is equipped with a bright backlit display for ease of use inside electrical panels. Accu-Tip technology delivers amperage measurements on smaller-gauged wires more accurately—to a 10th of a digit. It offers MAX/MIN/AVG recording, frequency measurement, and electrical field detection to help you determine voltage presence and relative strength of the field. Made with an over-molded, easy-to-grip design, the FLIR CM44 clamp meter is durable enough to withstand a 2 m drop, and the slim form factor is convenient to carry in your toolbag anywhere you go.
Professional performance at an affordable price:
  • Operates at –10 to 50°C (14–122°F).
  • Built to accept up to a 30 mm conductor.
  • True RMS measurements.
Features: DC voltage, AC voltage (digital low-pass filter/VFD), clamp-on AC current, Accu-Tip clamp-on AC current, frequency, resistance, capacitance, diode, DC μA, temperature.

Electrical measurement
True RMS voltage
Yes
Auto-ranging
Yes
DC V range
600.0 V
DC V accuracy
±1.0% + 5 digits
AC V range with digital low-pass filter
600.0 V
AC V range with digital low-pass filter: accuracy
±1.0% + 5 digits (50–60 Hz)
Peak RMS inrush current (AC V and AC A)
  
Response
80 ms to >90%
Resistance range
600.0 Ω, 6.000 kΩ, 60.00 kΩ
Resistance
±1.0% + 5 digits
Continuity
600.0 Ω ± 1.0% + 5 digits
Diode
2.000 V ± 1.5% + 5 digits
Capacitance
200.0 μF, 2500 μF ± 2.0% + 4 digits1
DC μA
200.0 μA, 2000 μA
DC μA accuracy (burden voltage)
±1.0% + 5 digits (3.5 mV/μA)

Temperature
Range2, accuracy3
–40.0 to 99.9°C, ±1.0% + 1°C
Range4, accuracy5
100–400°C, ±1.0% + 1°C
Range6, accuracy7
–40 to 99.9°F, ±1.0% + 2°F
Range8, accuracy9
100–752°F, ±1.0% + 2°F

Low-current Accu-Tip clamp-on AC A
Range (50–60 Hz)
60.00 A
Accuracy10111213 (50–60 Hz)
±2.% + 5 digits

Standard clamp-on AC A
Range (50 Hz~60 Hz)
60.00 A, 400.0 A
Accuracy14151617 (50–60 Hz)
±2.0% + 5 digits
Range (60–400 Hz)
60.00 A, 400.0 A
Accuracy 18192021 (60–400 Hz)
±3.0% + 5 digits

Line level frequency
Function (5.00–999.9 Hz)
600 V
Sensitivity22 (Sine RMS) (5.00–999.9 Hz)
50 V
Function (50.00 Hz~400.0 Hz)
60 A (low-current mode)
Sensitivity23 (Sine RMS) (50.00–400.0 Hz)
40 A
Function (50.00 Hz~400.0 Hz)
60 A, 400 A
Sensitivity24 (Sine RMS) (50.00–400.0 Hz)
40 A
Accuracy
1% + 5 digits

Non-Contact EF Voltage Detection
Typical voltage (tolerance: 10–36 V)
20 V
Bar graph indication
-
Typical voltage (tolerance: 23–83 V)
55 V
Bar graph indication
- -
Typical voltage (tolerance: 59–165 V)
110 V
Bar graph indication
- - -
Typical voltage (tolerance: 124–330 V)
220 V
Bar graph indication
- - - -
Typical voltage (tolerance: 250–600 V)
440 V
Bar graph indication
- - - - -
Indication
Number of bar graph segments and audible beep tones proportional to the detected field strength
Detection frequency
50/60 Hz
Detector:
Located Inside the top of the stationary jaw
Additional measurement functions
Data hold, MIN/MAX/AVG, backlit LCD, 80 ms peak RMS inrush current mode, relative/DC zero

General
Jaw opening
30 mm (1.2 in.) maximum
Display counts
6000
Measuring rate
5 times per second nominal
Calibration cycle
1 year calibration cycle recommended
Auto power off
32 minutes of inactivity
Power source
2 × 1.5 V AAA alkaline batteries

Environmental data
Operational temperature
–10 to +50°C (14–122°F) (non‐condensing) 10–30°C (50–86°F) (≤80% relative humidity (RH)) 30–40°C (86–104°F) (≤75% RH) 40–50°C (104–122°F) (≤45% RH)
Storage temperature
–20 to +60°C (4–140°F)
Relative humidity
80% maximum RH up to 31°C (88°F) decreasing linearly to 50% maximum RH at 50°C (122°F)
Temperature coefficient
0.15 × (specified accuracy)/°C, @ 0°C (32°F) to 18°C (64.4°F) or 28°C (82.4°F) to 50°C (122°F), or as otherwise specified
Operating altitude
2000 m (6562 ft.) maximum
Pollution degree
2

Physical data
Dimensions (L × W × H)
217 mm × 76 mm × 37 mm (8.5 in. × 3.0 in. × 1.5 in.)
Weight
186 g (6.6 oz.)

Warranty
Warranty

Certifications
Certifications
CE, cULus
Safety category rating
EN 61010-1 CAT IV—300 V, CAT III—600 V, EN 61010-2-032

Shipping information
Packaging type
Retail color box
Packaging contents
CM4x, 2 × AAA batteries, premium CAT IV silicone test leads, type-K thermocouple, FLIR carrying pouch, quick start guide, warranty registration card
Packaging weight
0.8 kg (1.8 lb.)
Packaging dimensions (H × W × L)
33 cm × 14 cm × 10.7 cm (13 in. × 5.5 in. × 4.3 in.)
Master carton weight
10.6 kg (23.4 lb.)
Master carton dimensions (H × W × L)
62.3 cm × 29.3 cm × 36.1 cm (24.6 in. × 11.6 in. × 14.3 in.)
Master carton quantity
12
UPC
793950370445
EAN
0793950370445
Country of origin
Taiwan
Tariff code
9030.31.0000

Technical support
Website
Supplies & accessories:
Disclaimer
© 2019, FLIR Systems, Inc. All rights reserved worldwide. Names and marks appearing herein are either registered trademarks or trademarks of FLIR Systems and/or its subsidiaries. All other trademarks, trade names or company names referenced herein are used for identification only and are the property of their respective owners. Specifications subject to change without further notice. Camera models and accessories subject to regional market considerations. License procedures may apply. Products described herein may be subject to US Export Regulations. Please refer to [email protected] with any questions.
1. Accuracy specified for film capacitors or better.
2. Supplied thermocouple is rated for –20 to 250°C (–4 to 482°F) only, and therefore not rated for the entire specified temperature range of the meter.
3. K-type thermocouple range and accuracy not included. Accuracies assume the meter interior has the same temperature as the ambient temperature for correct junction voltage compensation. Allow adequate time for stabilization for significant changes of ambient temperature. Up to an hour, for changes >5°C (9°F), may be required.
4. Supplied thermocouple is rated for –20 to 250°C (–4 to 482°F) only, and therefore not rated for the entire specified temperature range of the meter.
5. K-type thermocouple range and accuracy not included. Accuracies assume the meter interior has the same temperature as the ambient temperature for correct junction voltage compensation. Allow adequate time for stabilization for significant changes of ambient temperature. Up to an hour, for changes >5°C (9°F), may be required.
6. Supplied thermocouple is rated for –20 to 250°C (–4 to 482°F) only, and therefore not rated for the entire specified temperature range of the meter.
7. K-type thermocouple range and accuracy not included. Accuracies assume the meter interior has the same temperature as the ambient temperature for correct junction voltage compensation. Allow adequate time for stabilization for significant changes of ambient temperature. Up to an hour, for changes >5°C (9°F), may be required.
8. Supplied thermocouple is rated for –20 to 250°C (–4 to 482°F) only, and therefore not rated for the entire specified temperature range of the meter.
9. K-type thermocouple range and accuracy not included. Accuracies assume the meter interior has the same temperature as the ambient temperature for correct junction voltage compensation. Allow adequate time for stabilization for significant changes of ambient temperature. Up to an hour, for changes >5°C (9°F), may be required.
10. Induced error from adjacent current-carrying conductor <0.06 A/A.
11. Specified with relative/DC zero mode applied to offset non-zero residual readings.
12. Add 10 digits to the specified accuracy at <4nA.
13. Position the conductor at the center of the Accu-Tip area. Conductor size must not exceed 8.8nmm.
14. Induced error from an adjacent current-carrying conductor is <0.06 A/A.
15. Specified accuracy is for measurement made at the jaw center. When the conductor is not positioned at the jaw center, add 2% to the specified accuracy for position errors.
16. Add 10 digits to the specified accuracy at <6 A.
17. Add 3% to the accuracy specification for a crest factor of between 1.0 and 2.0. If the crest factor is >2.0, the reading may not meet specified tolerances.
18. Induced error from an adjacent current-carrying conductor is <0.06 A/A.
19. Specified accuracy is for measurement made at the jaw center. When the conductor is not positioned at the jaw center, add 2% to the specified accuracy for position errors.
20. Add 10 digits to the specified accuracy at <6 A.
21. Add 3% to the accuracy specification for a crest factor of between 1.0 and 2.0. If the crest factor is >2.0, the reading may not meet specified tolerances.
22. DC bias, if any, not more than 50% of sine RMS.
23. DC bias, if any, not more than 50% of sine RMS.
24. DC bias, if any, not more than 50% of sine RMS.