Megger BT51 Milliohmmeter

High test current, four-terminal, low resistance ohmmeter suitable for field and precision laboratory applications.

Retired products cannot be ordered

The Megger DLRO2 Low Resistance Ohmmeter is the suggested replacement

View Company Reviews

Part Number

1006-606

Manufactured

By Megger

Includes

FREE Ground Shipping
FREE Lifetime Tech Support

Product Manual Product Specs (2 Files)

Features

2A nominal test current with limiting circuit
±1% ±2 digits accuracy (32 to 122°F)
Two measuring ranges:
- 2000mΩ with 1mΩ resolution
- 20.00mΩ with 0.01mΩ resolution
Relay protection circuit (effective up to 240VAC)
- Effective whether instrument is on or off
- Protection from inadvertent supply connection
Weatherproof and shockproof portable case
Hinged detachable lid
Can be used with very long test leads
Meets safety requirements for IEC 610101-1
EMC in accordance with IEC61326-1

What's in the Box

4 Ah NiCd rechargeable battery
Supply lead for charging battery
Duplex handspikes with 8ft test leads
Operating instruction book
DH1-C 2-wire, 4-terminal duplex twist probe lead set

The Megger BT51 Milliohmmeter takes measurements by passing a current through two terminals on the conductor as well as monitoring the voltage across it. This measurement is ratiometric, meaning it is unaffected by current variations. The BT51 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, which is important when the resistance is very low.

This meter has a 3 1/2 digit LED display to facilitate use in low light levels. Two LEDs on the front panel indicate battery condition and whether test current is flowing when a measurement is being made. A red warning light indicates the presence of a dangerous voltage if the test leads are accidentally placed across a live circuit. This warning takes place whether or not the instrument has been switched on.

Megger BT51 Milliohmmeter Applications

Measure the resistance of metalwork bonding on large frames, structures, & aircraft
Earth bond testing
Able bond testing
Measure the resistance of lightning conductors
Check bus bar continuity
Check the resistance between metal points on the aircraft structure