The Model 3131A offers unmatched performance, and feature including test lead resistance zero adjustment for time-saving continuous operation, a clear ease to read illuminated scale, and a live circuit warning.
• Test insulation up to 100MΩ at 250V, 200MΩ at 500V, 400MΩ at 1000V and continuity up to 20Ω.
• LIVE circuit warning lamp plus audible warning.
• Automatic discharge of circuit capacitance when TEST button is released.
• Fuse protected (continuity range only).
• Battery check LED.
• Front panel zero adjust.
• Back light function to facilitate working at dimly lit situations.
• PRESS TO TEST button with lock down feature.
Insulation Resistance
Test voltage | 250V/500V/1000V |
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Measuring ranges<br>(Mid-scale value) | 100MΩ/200MΩ/400MΩ (1MΩ) / (2MΩ) / (4MΩ) |
Output voltage on open circuit | Rated test voltage+20%, -0% |
Nominal current | 1mA DC min. |
Output short circuit current | 1.3 mA DC approx. |
Accuracy | 0.1 – 10MΩ/0.2 – 20MΩ/0.4 – 40MΩ (Accuracy Guaranteed Ranges) ±5% of indicated value |
Continuity
Measuring ranges<br>(Mid-scale value) | 2Ω/20Ω (1Ω)/(10Ω) |
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Output voltage on open circuit | 4 – 9V DC |
Measuring current | 200mA DC min |
Accuracy | ±3% of scale length |
General
Safety Standard | IEC 61010-1 CAT III 300V Pollution Degree 2 IEC 61010-2-031 IEC 61557-1/2/4 |
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IP Rating | IEC 60529-IP54 |
EMC Standard | IEC 61326-1 |
Power source | R6 (AA) (1.5V) × 6 |
Dimensions | 167(L) × 185(W) × 89(D)mm |
Weight | 860g approx. |
Included Accessories | 7122B (Test leads) Pouch for test leads 8923 (F500mA/600V fuse) × 2 R6 (AA) × 6 9121 (Shoulder Strap) Instruction Manual |