Chapter 3 Specifications; Range / Resolution / Test Current; Accuracy; Temperature - Valhalla Scientific 4021 Operation Manual

Chapter 3
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
20Ω 1mΩ
200Ω 10mΩ
2kΩ 100mΩ
20kΩ 1Ω
200kΩ 10Ω
2MΩ 100Ω

Temperature

Temperature Coefficient:
Operating Temperature Range:
Storage Temperature Range:

General Specifications

Full Scale Test Voltage:
Current Source Compliance Voltage:
Terminal Configuration:
Display Type:
Overrange/Overload Indication:
Conversion Rate:
Maximum Nominal
Input Test Current
19.999Ω 10mA
199.99Ω 1mA
1.9999kΩ 100µA
19.999kΩ 10µA
199.99kΩ 1µA
1.9999MΩ 100nA
±0.002% per °C (from 0°C-15°C and 35°C-50°C)
not applicable for 200kΩ range and above.
0°C to 50°C
-10°C to 70°C
200mV
5V
4-Wire
4 ½ Digit LED's
Display Flashes
3 readings/seconds
Specifications

Accuracy

±0.05% of rdg, ±0.025% of rng
±0.05% of rdg, ±0.025% of rng
±0.05% of rdg, ±0.025% of rng
±0.05% of rdg, ±0.025% of rng
±0.07% of rdg, ±0.03% of rng
±0.1% of rdg, ±0.15% of rng
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