METRAHit 27EX Intrinsically Safe Milliohmmeter, Multimeter

METRAHit 27EX Intrinsically Safe Milliohmmeter, Multimeter and Data Logger

METRAHit 27EX Intrinsically Safe Milliohmmeter for Use in Potentially Explosive Atmospheres.
Compact milliohmmeter for the measurement of low value contact resistance in potentially explosive atmospheres, for example at contacts inside aircraft fuel tanks (bonding test), as well as for general low value resistance measurements inside and outside of potentially explosive atmospheres, for example on aircraft outer skins (lightning protection and wick test).

Milliohmmeter, multimeter,
insulation tester

• Measuring ranges: 30 mΩ, 300 mΩ, 3 Ω, 30 Ω
• Resolution: 10 μΩ
• Measuring method: Kelvin connection (4-wire measurement)
• DATA Hold memory: 1200 measured values
• EX designation: Ex II 2 G EEx ia IIA T4
• Prototype test certificate: INERIS 05ATEX0040
• Guarantee: 3 years material and workmanship,
  1 to 3 years for calibration (depending upon application)
• Included accessories: Kelvin probe, Kelvin clip, NiMH batteries, protective rubber cover, hard case

METRAHit.27EX Features

All-in-one: milliohm resistance meter, multimeter,  and data logger
Compact and rugged for service under harsh conditions and laboratory use, a single device for many applications

Kelvin connection (4-wire measurement)
Suppresses influence from conductor and contact resistances on measuring results

Measuring current can be selected according to the measuring task:
Adaptation to various resistance measuring requirements and optimized battery service life

DATA Hold
For quick, reliable measurement and storage of individual measured values, e.g. voltages at discrete cells in batteries and emergency power supplies

Overload protection
Protects the instrument in the event of inadvertent connection to mains power

Calibration certificate as standard feature
Reduced operating costs for use within ISO 9000 quality systems, documented traceability

Battery operation
The instrument is operated with two Ex approved rechargeable NiMH batteries.
Power management: If none of the keys are actuated for a lengthy period of time,
the milliohmmeter is shut down automatically.
The instrument is also shut down automatically if the minimum voltage required to perform the
selected measurement is fallen short of.

Applications

The METRAHit.27EX is a compact, rugged and reliable instrument, which is equally suitable for precision measuring and recording tasks in the factory, for on-site service and in the laboratory:

• Adjustment of shunts in instrumentation

• Testing of electrical connections at conductor bars for openpit mining, in potential bonding systems, and for industrial and household applications

• Testing of cable resistance, wiring, shunt resistors in PCBs and thick-film circuits

• Measurement of contact resistance in relays, contactors and power interrupters

• Testing of resistance in fuses, as well as conductor resistance in heavy current circuits

• Testing of winding resistance in transformers, coils, small motors etc.

• Testing of discharge resistance on aircraft, and at aircraft outer skin components

• Contact resistance testing in uninterruptible power supplies

• Measurement of cell voltages, for example in on-board batteries and emergency power supplies

• Contact resistance testing at welding seams

* Patented

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

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