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12702A/B
The 12702A/B resistivity chamber is a shield box containing electrodes. Together with an electrometer, it is used to measure the volume resistivity and surface resistivity of sheet, filmy and platy samples.
The pressure of the electrodes can be varied according to the sample used, allowing the sample to be fixed firmly regardless of its hardness.
The chamber has a capability to measure the sample thickness necessary to calculate the volume resistivity by using a micrometer.
In addition, it is provided with a volume/surface resistivity measurement switch and an applied voltage ON/OFF switch which turns on and off according to opening and closing of the cover.
Electrode Diameter
| 12702A | 12702B | ||
| Main electrode | Φ50 mm | Φ70 mm | |
| Guard electrode (outer diameter) Guard electrode (inner diameter) |
Φ80 mm Φ70 mm |
Φ100 mm Φ90 mm |
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| Counter electrode | Φ103 mm | ||
General Specifications
Operating environment: Temperature -20 ℃ to +80 ℃, relative humidity 80 % or less without codensation
Storage environment: Temperature -25 ℃ to + 80 ℃, relative humidity 80 % or less without codensation
Insulation resistance (temperature: 0-40°C, relative humidity: 70% or less, 1000 VDC source):
Main electrode - Chassis 1×1014 Ω or higher
Guard electrode - Chassis 1×1010 Ω or higher
Counter electrode - Chassis 1×109 Ω or higher
Dielectric strength: Counter electrode - Chassis 1.5 kV (1 minute), Guard electrode - Chassis 1.5 kV (1 minute)
Maximum sample dimensions: Approx. 130 (W)×10 (H)×130 (D) mm
Minimum sample dimensions: φ85 mm (12702A) / φ105 mm (12702B) or more
Connector: INPUT A triaxial connector, INPUT B M-type connector, V SOURCE biding post
Electrode pressure range: 2 kg to 5 kg
Sample thickness measurement range: 0 to 10 mm (1/10 mm resolution)
Dimensions: Approx. 167 (W)×197 (H)×192 (D) mm
Mass: 2.6 kg or less
Connection Diagram
Connection Cables to Electrometers
