4176 Programmable Micro-Ohmmeter


Best-selling Valhalla 4176 ohmmeter measures transformers, coils, and shunts the competition can’t.  The 4176 provides ultra-stable low-resistance measurements.

  • 7 Ranges from 20mΩ to 20kΩ
  • 1µΩ Resolution
  • Auto Ranging Mode
  • VFD Display with Adjustable Intensity
  • Four Terminal Kelvin Connections
  • RS-232 Interface Standard
  • Automatic Temperature Compensation
  • Internal HI-LO Comparator
  • Run/Hold and Peak Detector
  • Print/Log Function

The Best in Accuracy, Precision, and Ease of Use

4176 Programmable Digital Micro-Ohmmeter

Extraordinary Features

With a basic accuracy of 0.04%, this model allows measurements from 1uΩ to 30kΩ. The seven ranges can be activated manually or through the Auto-Range feature.

For optimal accuracy, connections to the load are made via a four-wire Kelvin binding post terminal that can accept banana plugs, spade lug or wires.

  • 7 Measurement Ranges from 20mΩ to 30KΩ
  • 1uΩ Resolution on lowest range
  • 10uA – 1A Constant Test Current
  • 0.04% Basic Accuracy
  • Four Terminal Kelvin Connections
  • Auto-Ranging Mode
  • Selectable Display Rate (100ms-to-500ms)
  • VFD Display w/Adjustable Intensity
  • RS-232 Serial Interface
  • Programmable Temperature compensation
  • Built-In Limit Comparator w/Visual-Acoustic Indications and Rear Panel Relay Terminals
  • Run/Hold w/Peak Detector
  • Print/Log Function

Automatic Temperature Compensation

Reduce Errors, Improve Productivity, and Expand Possibilities

The 4176 Micro-Ohmmeter was designed to satisfy applications where temperature compensation is mandatory. The resistance of component material such as copper, aluminum, etc., varies greatly with variations in ambient temperature. The Valhalla TCM feature allows these measurements to be accurately made and referenced to a selected temperature point of interest, e.g., 20°C. With just one temperature sensor (the Omni-Temperature-Compensator), the instrument can be programmed to compensate for any temperature coefficient and to any temperature reference. The instrument not only will display the compensated value of your load, but also the non-compensated value and the real-time ambient temperature of the immediate area.

Hi-LO Comparator Reduces Human Error Automatically

Using the 4176 HLC mode (Hi-Lo Limit Resistance Comparator) can save you time and mistakes caused by human error. Once you set your limits, three front panel LEDs allow a visual go/no-go view of the result, a beeper gives an alerts when limits are exceeded, and a rear panel relay closure screw terminal block can be used to implement an automated batch sorting system for components or products, operate counters, custom sound alarms or shut off a process.


A Run/Hold function is also a standard feature of the 4176. The user can also program this function as a peak Hi or peak Low detector. Measurements may be printed or logged and viewed in a spread sheet by using the Print/Log feature also standard.


Full Scale
Test Current
(± % reading ± % range)
TCM Mode Accuracy
(± % reading ± % range ± % ΔT)
20mΩ 20.000mΩ 1µΩ 1A ±0.02 ±0.02 ±0.002%/°C ±0.02 ±0.07 ±0.001
0.2Ω .30000Ω 10µΩ 1A ±0.02 ±0.02 ±0.002%/°C ±0.02 ±0.07 ±0.001
2Ω 3.0000Ω 100µΩ 100mA ±0.02 ±0.02 ±0.002%/°C ±0.02 ±0.07 ±0.001
20Ω 30.000Ω 1mΩ 10mA ±0.02 ±0.02 ±0.002%/°C ±0.02 ±0.07 ±0.001
200Ω 300.00Ω 10mΩ 1mA ±0.02 ±0.02 ±0.002%/°C ±0.02 ±0.07 ±0.001
2kΩ 3.0000kΩ 100mΩ 100µA ±0.02 ±0.02 ±0.002%/°C ±0.02 ±0.07 ±0.001
20kΩ 30.000kΩ 1Ω 10µA ±0.02 ±0.02 ±0.002%/°C ±0.02 ±0.07 ±0.001

Product Specifications

Weight 208 lbs
Dimensions 17 × 11.5 × 4 in
Conversion Rate

45 Readings/Second

Terminal Configuration

4-Wire Kelvin

Test-Current Polarity


Power Requirements

115VAC or 230VAC ±10%

Operating Temperature Range

0°C to 50°C

Storage Temperature Range

-40°C to 85°C


80% RH max @ 40°C (non-condensing)

Display Type

Overload Indication

Display flashes

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