Handheld Micro-Ohmmeter OM 10

Handheld Micro-ohmmeter OM 10


High-precision resistance and voltage measurement
Pulsed or DC current

Functions: OM 10

Measurements:
Low impedance values measurement in 4-wire configuration
Inductive and non-inductive impedances
DC and AC voltage

High accuracy: 0.05 % RDG

Current: Pulsed or DC current

Range: Up to 50 KΩ

Resolution: 10 μΩ

Protection: Up to 250 V / Up to 430 V for voltage measurement

Power supply: Mains power and internal battery

Communication: RS 232

Resistance calculation:
Automatic compensation for EMF and ambient temperature
Display of temperature-compensated resistance values
Selection of metal temperature coefficients
Selection and display of ambient temperature (measured with integrated sensor)

Additional functions: Calibration, no internal adjustments

Applications: Cable impedance, motors, contact resistance, metallized and ground connection resistance, transformers...


Compact, wear-resistant, heavy-duty chassis.
Dimensions: 120 x 65 x 245 mm
Weight: 1.1 Kg
Operating conditions: 0 / 50 °C, 20 / 75 % RH


The OM10 micro-ohmmeter is used for four-wire impedance measurements, from low values (resolution 10 μΩ) up to 50 KΩ, with exceptional accuracy. It includes thermal EMF compensation and temperature compensation. It can also measure DC and AC voltage and ambient temperature.

Easy to use
High resolution: 10 μΩ
Resistance and voltage measurement
Temperature compensation and measurement


Applications

Field, workshop, or laboratory, main applications include:
1. Cable impedance and resistivity measurement
2. Inductive impedance measurement (motors, transformers, etc.)
3. Contact resistance measurement (connectors, switches, relays, contact quality...)
4. Metal coating and grounding measurement
5. Testing and measurement of electrical components: resistors, fuses, thermistors, heating elements, PCB traces, etc.
6. Surface condition, mechanical bonding impedance, and material testing.


General Description

Display of measured values in units and ambient temperature.

Display: Measurement range, current type, possible temperature compensation.

50,000 counts (4 1/2 digits) LCD 13 mm high (0.5″).

Selection of range, current waveform, temperature compensation, and triggering via keyboard.

Four-wire measurement with automatic compensation for thermoelectric EMF and automatic ambient temperature compensation.


Measurement Current

User can choose between two current waveforms:

- Continuous (DC) for inductive impedance measurement (constant current)

- Pulsed, in other cases: current stops between measurements (advantage: low heating of test impedance and low consumption)


Measurement Time

In DC: 0.5 s,

In pulsed: 1 s.


Protection

1. Electronic protection up to 250V on inputs (430V for voltage measurement)

2. Electronic protection against current interruption when measuring an inductive impedance.



Calibration

No need to open the instrument for calibration; simply connect a standard resistor and enter its value via the keyboard.


Operating Conditions

Nominal operating temperature and humidity: 0 to +50°C, 20 to 75% RH.

Extended operating temperature and humidity: -10 to +55°C, 10 to 80% RH.

Storage and transport temperature: -30 to +60°C

Protection according to IP41.


Power Supply

Internal Ni-Cd battery pack: 1.7 AH

Battery life (typical use) > 10 h. An external main charger is included as standard with the instrument. It allows either battery charging or fixed use with mains power.


Introduction

Rugged ABS plastic housing for field or bench use.

Dimensions: 120 x 65 x 245 mm.

Weight: 1.1 kg.

Delivered with carrying case and mains power adapter.



Resistance Measurement

From very low values (resolution 10 μΩ) up to 50 KΩ with:

Measurement and automatic compensation for thermoelectric EMF

Measurement and compensation (user-selectable) for ambient temperature

With temperature compensation, OM10 displays the theoretical resistance value of copper or aluminum at 20°C (other metals on request). Ambient temperature is measured with a built-in sensor in the instrument and displayed.