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Megger BT51/120 Low Resistance Ohmmeter
Includes: Supply lead for battery charger, Duplex handspikes with 2,5 m (8 ft.) test leads 6111-022, Megger BT51/120 Operating instruction book.
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Instruments that measure low resistance accurately and give the result directly are invaluable in many applications. The Megger BT51 is a stable, accurate, reliable, low resistance ohmmeter equally suited to precision laboratory applications and to applications in the field.
The Megger BT51/120 uses the four-terminal method of measurement. The main advantage of this method is that the resistance of the test leads is not included in the measurement. The instrument is built into a robust, portable case that is weatherproof and shockproof and has a hinged, detachable lid.
The Megger BT51 ductor uses the four-terminal method of measurement. The main advantage of this method is that the resistance of the test leads is not included in the measurement. This is an important factor when the value of the measured resistance is very low. In the diagram, resistance RX is measured only between points A and B; other resistances in the current loop either side of A and B are ignored.
FEATURES:
High test current – 2 a.c. (e.g., for aircraft bond testing).
Four terminal measurement.
Two measuring ranges (2000 mΩ and 20,00 mΩ) and maximum resolution of 0,01 mΩ.
3½-digit LED display, which is helpful in a poorly lit environment.
Protection against 240 V a.c. and warning lights for added safety.
Robust, shockproof, weatherproof, portable case.
Can use very long test leads.
Ranges | 2000 mΩ, resolution 1 mΩ 20,00 mΩ, resolution 0,01 mΩ. |
Test Current | 2 A nominal, with up to 2Ω across the C terminals. |
Accuracy (0 to 50°C) | ±1% of reading ± 2 digits. |
Display | 3.5 digit LED display. |
Operating Temp | 0 to 50°C (32 to 122°F). |
Storage Temp | -20 to +50°C (-4 to 122°F). |
Protection | Relay protection for up to 240 V mains supply applied from C1/Pl to C2/P2. 250 mA (T) fuse, 20 x 5 mm, ceramic (for charging circuit). |
Power Supply | 4 Ah capacity NiCad rechargeable cells with internal charging unit. Normal charging time of 10 hours on 240 V, 50 Hz mains supply. |
Safety | The instrument meets the requirements for IEC 610101-1. The instrument is intended for use with non powered circuits only. |
EMC | In Accordance with IEC61326-1 |
Dimensions | 245 H x 344 W x 158 D mm (9,6 H x 13,5 W x 6,25 D in. approx). |
Weight | 4.5 kg (10 lb approx). |
Megger BT51 warranty | 2 years. |