Valhalla Scientific 4021, Operation Manual

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Chapter 3 Specifications
This section lists the operating and accuracy specifications for Valhalla Scientific Model 4021
Digital Ohmmeter. Accuracy is valid at 25°C ± 5°C for a period of one year from the date of
calibration.
Range/Resolution/Test Current/Accuracy
Table 1
Range Resolution
Maximum
Input
Nominal
Test Current
Accuracy
20 Ω 1m Ω 19.999 Ω 10mA ±0.05% of rdg, ±0.025% of rng
200 Ω 10m Ω 199.99 Ω 1mA ±0.05% of rdg, ±0.025% of rng
2k Ω 100m Ω 1.9999k Ω 100µA ±0.05% of rdg, ±0.025% of rng
20k Ω 1 Ω 19.999k Ω 10µA ±0.05% of rdg, ±0.025% of rng
200k Ω 10 Ω 199.99k Ω 1µA ±0.07% of rdg, ±0.03% of rng
2M Ω 100 Ω 1.9999M Ω 100nA ±0.1% of rdg, ±0.15% of rng
Temperature
Temperature Coefficient:
±0.002% per °C (from 0°C-15°C and 35°C-50°C)
not applicable for 200k Ω range and above.
Operating Temperature Range:
0°C to 50°C
Storage Temperature Range:
-10°C to 70°C
General Specifications
Full Scale Test Voltage:
200mV
Current Source Compliance Voltage:
5V
Terminal
Configuration: 4-Wire
Display
Type: 4 ½ Digit LED’s
Overrange/Overload Indication: Display
Flashes
Conversion
Rate: 3 readings/seconds