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Earth & Insulation Tester, Industrial Meter, Sew
SEW 1120 ER 3 Wire Digital Earth Resistance Tester
₨ 31,000
The latest SEW 1120 ER 3 Wire Digital Earth Resistance Tester price in Pakistan is Rs. 31,000/- updated on October 20, 2026.
The SEW 1120 ER 3 Wire Digital Earth Resistance Tester is an earth resistance tester for checking earthing systems.
Overview
The 1120 ER is a ‘professional instrument’. The instrument is suitable for the testing of single earth electrodes such as lightning conductors and other small earthing systems. The resistance of conductors such as continuity and conduit coupling joints can also be measured. Two-terminal operation measurement, which reduces the accuracy, can also be done by shorting P and C terminals.
Features
- Capable of measuring earth resistance and earth voltage.
- 2mA measuring current permits the testing of earth
- resistance without tripping earth leakage current
- breakers in the circuit under test.
- In addition, the test leads are supplied as standard accessories for
- simplified two-wire measuring system.
- 0Ω adjustment.
- Battery operated.
- Data hold function.
- Low battery indication.
- Calibration performed with supplied test leads.
Also, you can browse more SEW products at Roshanex. In addition, our team can help you choose the right model before you order.
Summary
| Low battery indication | ” – , + “symbol appears on the display |
| Safety Standard | IEC/EN 61010-1 CAT III 200V IEC 61557-1 IEC 61557-5 EN 61326-1 |
| Accuracy | Earth resistance ±(2%rdg+2dgt) or ±0.1Ω, which is greater Earth voltage ±(1%rdg+2dgt) |
| Measuring range | Earth resistance 0-20Ω / 0-200Ω / 0-2000Ω Earth voltage 0-200 Vac(40-500Hz) |
| Weight | Approx. 600g |
| Measuring Current | Earth Resistance by constant current inverter 820Hz approx. 2mA |
| Output Voltage on Open Circuit | LED will be unlit |
| Power Source | 1.5V (AA) × 8 |
HARDWARE FEATURES
| Data hold indication | ” HOLD “symbol appears on the display |
| Earth resistance resolution | 0-20Ω : 0.01Ω 0-200Ω : 0.1Ω 0-2000Ω : 1Ω |
| Over range indication | “1”(MSD) |
TECHNICAL SPECIFICATION
| Display | 3½ digit (2000 counts) |
General Specification
| Dimensions | 175(L) × 85(W) × 75(D)mm |
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