This approval allows direct fitment of the Searchpoint Optima Plus or MPD catalytic sensors to the XNX with a load 250 ohm minimum resistance. This approval

does not cover the remote-mounting of the sensor from the XNX.

•

XNX shall be installed such that the MPD sensor faces downwards. When using the Searchpoint Optima Plus sensor this must be mounted so that the sensor is

horizontal.

•

For the ISA 60079-29-1 assessment, only the 4 to 20 mA output is considered as the safety function. None of the other outputs of the XNX are considered as the

safety function during this assessment.

•

For the compliance to this approval, the adjustable alarm set point shall not exceed 60 %LEL and the highest alarm shall be configured as a latching alarm.

Specifications

157

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