Valhalla Scientific 4300B Digital Ohmmeter
Description
The 4300B Digital μ-Ohmmeter quickly and accurately measures a wide variety of low resistance devices ranging in value from 100nΩ to 20kΩ. The flexible measurement format of the 4300B provides six ranges of user selectable test current (from .1mA to 10A) and three voltage sensitivity settings (20mV, 200mV and 2V). The unit's 4½ digit resistance readings are displayed on a high contrast LCD display and are optionally available via optional BCD, RS-232 or GPIB interface. Features of the 4300B include: four terminal compensation, a very low 2mΩ range, selectable test current levels (up to 10 amps), a fast settling charge inductor mode, safety disconnect status indicators, automatic temperature compensation, a basic accuracy of ±0.03% and a push button or GPIB controlled current on/off selector.
Features
- User Selectable Test Current Up to 10 Amps.
- Boosted Compliance Voltage Mode for rapid charging of Motors and Transformers.
- Safety Disconnect Status L.E.D.s.
- Test Current On/Off Switch.
- Selectable Voltage Sensitivity:1μV-10μV-100μV
- 18 Combinations of Voltage Sense/Current provide optimum measurement conditions
Specifications
|
Accuracy |
±.04% of reading ± 3 digits (add ± 3 digits on 20mV range; ± .02% of reading on 10A range) |
|
Temperature Coefficient |
(5°C – 21°C and 29°C – 50°C) ± .005% of reading per °C |
|
Temperature Sensor |
AL” and “CU” add ± .05% of reading to accuracy specification (Temperature compensators are accurate to ± 0.1% of the rated coefficient) |
|
CMR Ratio |
60dB at DC, 50Hz, and 60Hz |
|
Display |
4 ½ digit (19999) Liquid Crystal Display |
|
Overload Indication |
Display Flashes “-1” |
|
Terminal Configuration |
Four-Wire Kelvin |
|
Conversion Rate |
~ 400msec |
|
Maximum Kick-Back Protection |
500Amp Peak Induced Current |
|
Compliance Voltage (Normal Mode) |
7.5 VDC nominal at 10A resistive |
|
Compliance Voltage (Charging Inductor Mode) |
> 20VDC when indicator is lit |
|
Open Circuit Voltage (Test Current Off) |
<20mV between IHI and ILO terminals |
|
Physical Dimensions |
17 x 17x 4 in. |
|
Weight |
20 lbs (9.1 Kg) |
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