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3-24
1010PVNFM-3A
Section 3
3.2.4 CLAMP-ON RESISTIVE TEMPERATURE DEVICE (RTD) INSTALLATION
NOTES
The Clamp-On RTD sensor, with which your 1010PVN is supplied, is extremely sensitive and
precise. Its contribution to the performance of your meter can be as important as that of the
liquid flow sensors. Please consult the installation drawings for details on physical installa-
tion and wiring of the RTD. In order to produce the best possible tracking of the true liquid
temperature, try to make your installation conform to the notes on the installation drawing
and these following tips:
l
Prepare the pipe surface by removing paint to expose bare metal and by smoothing out any
remaining rough spots.
l
Use the thermal couplant compound (CC#117) between the face of the RTD element and the
pipe surface to improve the conductivity of the metal-to-metal contact.
l
Keep the RTD out of direct sunlight or other non-pipe sources of heat or cold that may
affect their temperature sensing. The foam insulator supplied helps in this regard, but
consider using additional pipe insulation for all installations exposed to extreme ambient
conditions. Consider mounting the RTD under the pipe in order to keep it out of direct
sunlight.
l
In installations where RTD elements are exposed to harsh conditions such as condensation,
salt spray, etc., use CC#110 couplant compound to coat the connection between the cable
and the RTD sensor. Consult Installation Drawing 991TN-7 for details.
®
Be sure to install the supply RTD Sensors (see diagram on previous page) in the appropriate
locations.
®
Be sure to correctly indicate where the flow is being measured in the “Location” item of the
1010 menu; either supply or return.
Содержание 1010PVDN
Страница 185: ...APPENDIX A Couplant Installation Instructions...