Ametek ASR900, Installation And Maintenance Manual

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3-18 | Heated Acid Gas Sample Probe (Large Diameter)
Wiring Sample Probe Heaters Controlled by Standalone
Temperature Controller (Retrofits)
A separate, external Temperature Controller device must be installed and
connected to provide signals and power to the HAG Probe Heater. This
device can be supplied by AMETEK or by the customer/end-user.
The Temperature Controller must be able to accept a European Curve
three-wire Pt100 RTD (0.00385 alpha coefficient), provide PID control, and
must also meet or exceed the following:
Temperature Range
40 °C to 120 °C, adjustable
Electrical Requirements
Must be able to switch a 150 W load at either 120 VAC or 240 VAC.
To wire the Probe Heater Assembly to the standalone Temperature
Controller:
1. Install the standalone Temperature Controller in a suitable location, as
close as possible to the HAG Sample Probe, to ensure the RTD in the
Sample Probe operates efficiently.
Hazardous Locations
The Temperature Controller must be located in a remote safe area, or
in a purged shelter/enclosure.
All electrical connections, materials, and methods (plus all safety poli-
cies and procedures) must be made in compliance with local wiring
regulations and electrical code for the hazardous area, and be approved
by the Owner Company.
2. The signal and power conductors can be run in separate or common
conduit ( North American/General Purpose installations ) or cable
( European/Hazardous Location installations ). Terminal Box entries
are ½ " NPT.
For wiring gauge (AWG) and other requirements, refer to draw-
ings/documentation shipped with the HAG Probe, analyzer, and/or
Temperature Controller.

NOTE
!
CAUTION