| General specifications |
| Measuring functions |
3-pole earth ground resistance, 2-pole ac resistance of a conductor, Interference voltage |
| Intrinsic error |
Refers to the reference temperature range and is guaranteed for one year |
| Measuring rate |
2 measurements/second |
| Battery[1] |
One 9 volt alkaline (LR61) |
| Battery condition |
LO-BAT is displayed if voltage drops below 6.5 V |
| Voltages |
Between jacks H/C2 and E/C1: 250 Veff maximum (effective voltage)
Between jacks S/P2 and E/C1: 250 Veff maximum |
| Standard infrared lens type |
Field of view: 17° x 17°
Spatial resolution: (IFOV) 2.50 mRad
Minimum focus distance: 15 cm (approx. 6 in) |
| Climatic class |
VDE/VDI 3540 RZ (conforming to KWG as per DIN 40040, 4/87) |
| Temperature performance[2] |
| Working: |
-10 °C to +50 °C (+14 °F to +122 °F) |
| Operating: |
0 °C to +35 °C (+32 °F to +95 °F) |
| Storage: |
-20 °C to +60 °C (+68 °F to +140 °F) |
| Reference: |
+23 °C ± 2 °C (+73 °F ± 4 °F) |
| Temperature coefficient |
± 0.1 % of range per degree Kelvin |
| Safety |
IEC/EN 61010-1, 600 V CAT II, pollution degree 2 |
| Dimensions |
113 mm x 54 mm x 216 mm (4.5 in x 2.1 in x 8.5 in), including holster |
| Weight |
850 g (1.9 lb), including standard accessories, volume approximately 600 cm3 |
| Note: |
[1]If the tester is not going to be used, or is being stored for a long period, remove the battery and store separately from the tester to avoid damage from battery leakage.
[2]The four temperature ranges for the tester exists to satisfy European Standards requirements; the instrument can be used over the full working temperature range by using the temperature coefficient to calculate accuracy at the ambient temperature of use. |
| Electrical specifications |
| Maximum deviations: |
E1 Influence factor Position
E1 Deviation influence 0 %
E2 Influence factor Supply voltage
E2 Deviation influence 0 %
E3 Influence factor Temperature E3
E3 Deviation influence 2.3 %
E4 Influence factor Serial interference voltage (20 V)
E4 Deviation influence 0.6 %
E5 Influence factor Probe- and auxiliary probe resistance
E5 Deviation influence 10 % |
| Test voltage |
3.7 kV |
| Protection type |
IP 40; IEC/EN 60529 |
| Electromagnetic compatibility |
Emission: IEC/EN 61326 Class B
Immunity: IEC/EN 61326 Annex C |
| RE resistance measurement |
| Measuring method |
Current-voltage measurement with improved cross-talk attenuation, no compensation of measuring lead resistance, with probe (3-pole) or without probe (2-pole), as per IEC/EN 61557-5 |
| Open circuit voltage |
23 to 24 V ac |
| Short circuit current |
> 50 mA ac |
| Measuring frequency |
128 Hz |
| Maximum permissible overload |
250 Veff |
| Measuring time |
8 seconds (average from when START is pressed) |
| Limit input |
Tester retains set value even if instrument is turned off (assuming battery power supply is sufficient) |
| Automatic changeover of resolution |
RH < 7 k Ω
Resolution 0.01 Ω
RH < 50 kΩ
Resolution 0.1 Ω
RH > 50 kΩ
Resolution 1 Ω |
| Interference voltage display dc + ac |
Vmax 30 Veff
Common mode rejection > 80 dB at 50 Hz and 60 HzM
Ri 680 kΩ
Measuring uncertainty < 10 % for pure ac and dc signals |
| Measuring range |
| 0.15 Ω to 20 Ω |
Resolution 0.01 Ω
Display range 0 to 19.99 Ω |
| 200 Ω |
Resolution 0.1 Ω
Display range 20 to 199.9 Ω |
| 2 k Ω |
Resolution 1 Ω
Display range 200 to 1999 Ω |
| Intrinsic uncertainty |
± (6 % of measured value + 5D) |
| Operating uncertainty IEC 61557[1] |
± (18 % of measured value + 5D) |
| Notes: |
[1] Covers all deviations caused by influence quantities E1-E5. If the deviation E4 caused by high probe or auxiliary probe resistance is higher than specified flashes. Measured values are outside of the specified operating uncertainty |