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).

• Electrically isolates an analog DC signal from 0(4) to 20 mA / prevents the formation of parasitic voltages and currents / eliminates grounding problems with interconnected and intermeshed signal lines.
• Highly accurate: fulfills the isolation function with practically no transmission errors.
• No auxiliary power terminals: eliminates the need to lay and connect power supply lines, well suited for subsequent retrofitting to signal circuits.
• N-type rail mount housing for G rail per EN 50 035-G32, or top-hat rail per EN 50 082