Gossen Metrawatt, M227F, Milliohmmeter for Use in Potentially Explosive Atmospheres
M227F Includes Only:
- 1 METRA HIT 27EX
- 1 GH18 protective rubber holster (blue) including carrying strap
- 8 Ex-approved batteries
- 1 KC27 Kelvin probe (1 ea. - not a set)
- 1 KC4 Kelvin clip (1 ea. - not a set)
- 1 HC30 hard case
- 1 DAkkS calibration certificate
- 1 Ex certificate: INERIS 05 ATEX 0040
- 1 set of operating instructions
Features:
- Indicator Displays: LCD panel with 4¾-place display for measured values, two auxiliary displays for special functions, background illumination, LCD test and overload display; 2 LEDs (red and green) for evaluating contact quality
- Kelvin Connection (4-wire measurement): Suppresses influence from conductor and contact resistance on measuring results
- Offset Balancing: Automatic offset balancing in lower measuring ranges via thermovoltage compensation
- DATA Hold: Quickly stores individual measured values for reliable measurement
- Auto-Ranging: Instrument equipped with automatic and manual measuring range selection
- Power Supply: Operates with two Ex-approved batteries; automatic shutdown after prolonged inactivity or if minimum voltage is insufficient for measurement
- Protective Cover for Harsh Conditions: Compact, rugged design with soft protective rubber holster and tilt stand; prevents damage from impacts, dropping, or vibration
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).
For more information, please see 
Data Sheet
