Time Electronics 1067 Precision Resistance Box User Manual
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1067 Technical Manual
C ontents
All Time Electronics' instruments are subject to continuous development and improvement and in
consequence may incorporate minor detail changes from the information contained herein.
1.
S pecification
Resistance range:
10 milliohms to 12k ohms
Number of decades:
6, each decade settable from 0 - 11
Increments:
10 milliohms steps
Accuracy:
At calibration temperature of 22°C. ± 0.01% of
setting ± 2 milliohms, after deduction of residual end
resistance ± 1mR for residual variation
Current rating:
10mR range: 3A
100mR range: 2A
1R range: 600mA
10R range: 200mA
100R range: 60mA
1K range: 20mA
Residual end resistance:
Less than 10 milliohms
Less than 1 milliohm variation
Temperature coefficient:
Less than 10 ppm per °C (> 1 ohm)
Less than 20 ppm per °C (< 1 ohm)
Maximum voltage:
200 DCV at maximum resistance setting
Insulation:
Case to resistance terminals 2kV / 50Hz max
Operating torque:
Less than 0.1 Nm
Stability:
Better than 20 ppm per year (>1 ohms)
Better than 100 ppm per year (<1 ohms)
Contacts:
Make before break - Silver Alloy
Dimensions/Weight:
87mm x 63mm x 355mm. Weight: 1.1Kg
Options:
19” rack mount case, 2U height : 445 x 85 x 255mm
Calibration certificates (NPL and UKAS)
If voltages above 70V DC or 30V AC (RMS) are present the optional terminal shroud
kit (Part No. 9723) must be fitted.