4 Wire Earth resistance Tester 

The 4234ER 4 wire earth resistance tester is capable of performing 2-pole, 3-pole and 4-pole ground resistance tests. The 4234ER is a microprocessor controlled, auto-ranging instrument, which makes it easy to use, cutting down the operators input and saving time. An automatic C-spike check, and P-spike check are utilised by the 4234ER to ensure correct connections are made, and that current is flowing between the earth rods and high resistances are not encountered across the current and voltage spikes. Supplied as a complete kit comprising of a hard carry case, a 15 metre long red test lead, two 10 metre long black and yellow test leads, and a 5 metre green test lead, four auxiliary earth rods, user manual and batteries.

Product Features 

Microprocessor-controlled.
Earth testing at 2Ω, 20Ω, 200Ω, 2kΩ.
Earth voltage measuring : 0-300V AC.
Automatic C spike check.
Automatic P spike check.
2-Wire test.
3-Wire test.
4-Wire test.
LCM display.
Auto ranging.
Auto power OFF.
Data hold.
Robust, compact and easy-to-carry

Specifications 

Measuring ranges 
Earth Resistance 0-2Ω / 0-20Ω / 0-200Ω / 0-2kΩ Earth Voltage 0-300V AC
Accuracy Earth Resistance ±2%rdg ± 3dgt Earth Voltage ±2%rdg ± 3dgt

Earth resistance resolution
0-2Ω : 0.01Ω
0-20Ω : 0.1Ω
0-200Ω : 1Ω
0-2kΩ : 10Ω

Temperature & humidity Operating: 
0°C~40°C ≤80% R.H.
Storage: -10°C~50°C ≤80% R.H.
Dimensions 250(L) x 190(W) x 110(D)mm
Weight (battery included) Approx. 1500g
Power source 1.5V (AA) x 8

Safety standards

EN 61010-1 CAT IV 300V
EN 61557-1 EN 61557-5
EN 61326-1