Key facts
- Brand
- EXTECH
- Model
- EX840
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-01
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Extech EX840 True RMS 1000 Amp Clamp Meter with IR Thermometer User's Guide
This manual provides instructions for the Extech EX840 CAT IV True RMS 1000A Clamp Meter, which measures AC/DC Voltage, Current, Resistance, Capacitance, Frequency, and temperature via Type K thermocouple or Non-Contact IR. It includes safety notes, descriptions of meter functions, and step-by-step operation procedures.
Read onlineEXTECH EX840 specifications
| Current Range | 1000A DC/AC |
|---|---|
| Voltage Range | 1000V DC/AC |
| Resistance Range | 250V DC/AC |
| Temperature Range (Type K) | -20 to 250°C |
| Temperature Range (Type K) | -4 to 482°F |
| Continuity Threshold | < 40 Ω |
| IR Spot to Distance Ratio | 8:1 |
Source: Extech EX840 True RMS 1000 Amp Clamp Meter with IR Thermometer User's Guide
All EXTECH EX840 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the maximum current measurement range?
The meter can measure up to 1000A DC/AC.
From: Extech EX840 True RMS 1000 Amp Clamp Meter with IR Thermometer User's Guide
How do I perform a DC Zero measurement?
Select ADC, press the DC ZERO button with no conductor in the jaw, and hold the button until 'ZERO' disappears to exit.
From: Extech EX840 True RMS 1000 Amp Clamp Meter with IR Thermometer User's Guide
What is the NISTL designation on the EX840?
NISTL stands for Limited NIST for Certificate of Traceability to all functions except IR Thermometer.
From: Extech EX840-NISTL AC/DC True RMS Clamp Meter Product Leaflet
Does the EX840 include a laser pointer?
Yes, the built-in non-contact IR Thermometer includes a laser pointer.
From: Extech EX840-NISTL AC/DC True RMS Clamp Meter Product Leaflet