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KLEIN CL320 HVAC Digital Clamp Mete

Manufacturer: Klein Tool | Catalog # CL320 | North Coast Part # 1984805

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Klein Tools CL320 Clamp Meter is an automatically ranging true root mean square (TRMS) digital clamp meter that measures AC current and NCVT via the clamp, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, and tests diodes via test-leads, and temperature via a thermocouple probe. Features include Auto Range to improve efficiency and speed when making measurements; Diode Test to troubleshoot malfunctioning diodes; Max/Min to understand the variability from average of an electrical property being measured, and DC Microamps measurements when working with flame sensors.

Technical Information

Measures AC Current and NCVT via Clamp and AC/DC Voltage, Resistance, Frequency, DC Micro-Amp, Capacitance, Duty Cycle, Diode Test, and Continuity via Test Leads, and Temperature with Thermocouple
Battery Type
(3) AAA
Blade Dimensions
8.45 in L x 3.51 in W x 1.51 in H
400 Amp
Display Type
4000 Count Backlit LCD
-1 MHz
Jaw Capacity
1.61 in
ABS Plastic
40 m?
600 Volt

Manufacturer Information

Family Brand Name
Klein Tools

General Product Info

Product UPC
11 oz


8.45 Inch
1.56 Inch
8.45 Inch
Overall Length
8.45 in
3.512 in
  • Do not use the meter during electrical storms or in wet weather, and do not use the meter or test leads if they appear to be damaged.
  • Do not attempt to measure resistance or continuity on live circuits.
  • Before each use verify meter operation by measuring a known voltage or current.
  • Usage of this meter in any way other than that specified by the manufacturer can impair safe operation, resulting in severe injury or death.
  • Read, understand and follow all instructions, cautions and warnings attached to and /or packed with all test and measurement devices before each use.
  • Non-contact voltage tester integrated into the clamp jaw
  • Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy
  • Test lead holder on side of clamp and optional magnetic hanger for meter (Cat. Nos. 69445 or 69417) for hands free operation
  • CAT III 600V, Class 2, Double insulation safety rating
  • Measures temperature with a K-Type thermocouple probe
  • Clamp Meter measures AC current and NCVT via clamp and AC/DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode test, and continuity via test-leads, and temperature with thermocouple
  • Auto-Range, Data Hold, and Max/Min value
  • Auto-power off after 10 minutes to conserve battery life
  • Low battery indicator and easily accessible battery compartment
  • Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations
  • Backlit LCD for ease of viewing in low light
  • Includes a carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries
  • Built to withstand a 6.6-Foot (2 m) drop