Analog (4-20 Ma) Inputs And Sensor Excitation Voltage (Pl4 - Green); Light Guide - Michell Instruments XTP601 Series User Manual

XTP601 User's Manual
4.5.7

Analog (4-20 mA) Inputs and Sensor Excitation Voltage (PL4 - Green)

PIN 6
Ch2
I/P
-
The XTP601 features 2 input channels for 4-20 mA signal from external instruments such
as pressure transmitters or other devices to compensate for pressure or background gas
influence.
The input configured as
Parameters Page under the heading
NOTE 1: Channel 1 is External Compensation input and Channel 2 is External
Sensor input.
NOTE 2: Excitation voltage = Same as power supply ±1 V if JMP4 connected
across top 2 pins and 15 ±0.5 V (max 100 mA per channel) if JMP4 connected
across bottom 2 pins.
4.5.8

Light Guide

The optional light guide can be fitted to the left hand cable entry. If this is required for
the Hazardous Area version of the analyzer this must be specified at time of purchase
order.
NOTE: Only 1 light guide can be fitted to each analyzer.
Michell Instruments
PIN 5 PIN 4
Ch2 Ch2
I/P Exc.V
+
EXT SENS EXT SENS (External Sensor) can be viewed on the Secondary
EXT I/P EXT I/P
If fitted in a Hazardous Area (EX) version of the XTP601
the light guide not be dismantled by the user. Dismantling
the Light Guide will invalidate the the certification.
PIN 3 PIN 2
Ch1 Ch1
I/P I/P
- +
(External Input).
INSTALLATION
PIN 1
Ch1
Exc.V
35