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User-Supplied Items
Power Wiring
See Electrical Requirements above:
Interconnect Wiring
The user must supply all wiring for serial communication, analog
output, and alarm relays. Recommended wire is 22 gauge, twisted/
shielded pair. Refer to the "Special Warnings and Information" section
in the beginning of this manual.
External Sample Tubing
Sample input tubing length should be as short as possible.
•
- For optimum performance, sample tubing should be thermally-
controlled to maintain a constant sample input temperature. Op
imal results are obtained with the sample line maintained at 60 °C.
- Recommended sample gas input tubing is 1/4 inch OD, electropolished
316L VAR stainless steel (AMETEK #257707002 or equivalent).
Exhaust pressure must be atmospheric.
•
-
Tubing should not present a back pressure on the sensor.
Input and exhaust tubing must be fitted with female 1/4" VCR® con-
•
nectors.
Rear Panel Connections and Interface Board
See Figures 3-2 and 3-3 for location of analyzer connections on rear panel and interface
board. Remove terminal cover to access interface board.
#
1
2
3
4
Item
Power Conduit
Signal Conduit
Instrument Air Fitting
RS-232 Serial Port
Function
Cable gland for analyzer power cord.
Cable gland for signal connections.
Input port for instrument air used to
operate internal diaphragm valves; 1/4-
inch Swagelok fitting.
User female serial communications
interface. Serial wiring supplied by user.
Observe caution regarding use in haz-
ardous locations.
Installation & Start-Up | 3-5
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