The 3235 Earth Tester is used as a convenient test set for simple, accurate measurements of earth resistance. The earth voltage can also be measured on the galvanometer scale by positioning the selector switch.
 

Measuring Range

Earth Resistance:0-10-100-1,000Ω (Min Scale Div 0.1Ω)

Earth Voltage:0-30Volts

Scale

Earth Resistance:3-digit logarithmic continuous scale on measuring dial.

Earth Voltage: Uniform scale on galvanometer.

Accuracy

Earth Resistance:

±5% of 2Ω(±0.1Ω or min one div) in range of 0-2Ω

±2.5% of 20Ω(±0.5Ω or min one div) in range of 2-20Ω

±2.5% of 200Ω(±5Ω or min one div) in range of 20-200Ω

±5% of 1000Ω(±50Ω or min one div) in range of 200-1000Ω

Earth Voltage:±5% of full scale

Measuring Frequency

500Hz

Ambient Temperature Influence

Variation in indication is within one scale division of corresponding range against a temperature change of 20±20°C.

Battery Voltage Influence

Accuracy is maintained within specified limit even if voltage decreases to 4 Volts under operating conditions.

Earth Voltage
Influence

Variation in indication is within one scale division of corresponding range for earth voltages up to 10 Volts at the line frequency.

Power Source

Four 1.5 Volt batteries (IEC R20P, ANSI D, Mono 1.5 V or equivalent).

Insulation Resistance

More than 20MΩat 500 V DC between terminals and case.

Standard Accessories

Supplied With Instrument:

Four 1.5 Volt batteries fitted in Instrument.
Three measuring leads.
Two earth spikes.
One carrying case.
One accessory storage bag.

Optional Accessory

B9646CG Auxiliary earthing net (two sheets per unit).

Size

190mm (W) x 122mm (H) x 124mm (D)

Weight

1.5kg