M1 MILLIOHM
METER^®

Fast. Convenient. Safe. High Precision.

The M1 Milliohm Meter^® – handheld bonding meter for measuring low electrical resistance in the aviation industry.

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M1 Milliohm Meter

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M1 Milliohm Meter^®

The M1 Milliohm Meter^® is a handheld ground support bonding and grounding meter. It is engineered to measure low electrical resistance with exceptional accuracy and is certified to UL913 standards for intrinsic safety for use in hazardous environments. It is used to ensure the regulated conformity of electrical bonding for structural and safety purposes.

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Technical Specs

OPERATION

Fully automatic – stores 128 readings – RS-232 data por

RANGE

0.01 to 19999 milliohms

BLUETOOTH (optional):

Bluetooth Low Energy v4.2 Easy mobile access to recent and stored readings, and instrument status, with unlimited continuous data export for complete traceability and compliance reporting.

RESOLUTION

0.00 to 19999 milliohms

ACCURACY

<0.1% of readings

CURRENT

100 milliamps DC

VOLTAGE

2.5 volts internally limited

TEMPERATURE

Operating -20ºC to +40°C

QUALIFICATIONS

ISO 9001 registered
NIST accuracy certified
UL913 flightline approved
CE certified

GATT

Support for Generic Attribute Profile (GATT) standard

Features

All measurements are displayed in milliohms. No conversions, no zeroing of the meter or any other compensation for cables, etc. are needed. The meter is totally automatic and self-ranging, always displaying the test measurements on the most appropriate scale that contains the reading, so there is never any need for the operator to change scales or ranges.

The meter will not display a reading unless proper electrical continuity criteria are met, so there is no possibility of erroneous readings. The meter gives accurate, stable values, without fluctuation.

A reading cannot be accidentally lost without the operator making the conscious choice by either taking another reading or turning the power off. The meter also has an internal memory capable of storing up to 128 readings, which can be recalled and/or downloaded at a later time.

The display has adjustable display brightness controls, so that the measurements can be easily read in a wide range of lighting conditions, from inside of dark enclosed areas to direct outdoor sunlight. A choice of green or red display is available.

The M1 Milliohm Meter® has been in industrial use, primarily in aviation, for over fifteen years. It has proven to be a very versatile and reliable test tool, with low maintenance.

The low voltage and current output will not cause ignition of flammable gas, as certified by Underwriters Laboratories per UL 913 standard entitled “Intrinsically Safe Apparatus and Associated Apparatus for use in Division 1, Class I, Groups C, D, Hazardous Locations.” The unit is approved for use in hazardous environments such as in and around aircraft, fuel installations, fuel cells, and gas systems.

It is a highly sophisticated laboratory grade instrument, designed specifically with the field user in mind. Recalibration is not generally needed. The unit comes pre-tested, calibrated and certified directly from the manufacturer. Re-testing and certification schedules will depend on customer regulatory requirements.

The M1 Milliohm Meter® uses a rechargeable 6″C” cell battery pack with special features that extend battery life for many years under normal working conditions and proper care.

Options

Standard M1-G Meter has Green Display with resolution of 0.01 milliohms
Standard M1-R Meter has Red Display with resolution of 0.01 milliohms
M1B Meter has Green Display only and greater maximum display resolution of 0.001 milliohms
Bluetooth capability (optional) for easy access to recent readings, stored readings, and instrument status from mobile devices. Allows for unlimited data output for complete traceability and compliance reporting.

The difference between standard M1-G/R and M1B Meter is in the display resolution only. If the additional resolution has not been specified or not required for your applications, the standard unit would likely be best choice.