XNX Universal Transmitter
Specications
157
Notes
Special notes for ISA 60079-29-1:2013 approval:
• This approval covers XNX in combination with Searchpoint Optima Plus and MPD catalytic sensors only.
• This approval allows direct tment 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 congured as a latching alarm.
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