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3-25
1010BXFM-3
Section 3
1012EC SERIES CABLE
THREADED PIPE FITTING
THERMOWELL
THERMAL COUPLANT
PIPE WALL
991TW TEMPERATURE SENSOR
CONNECTOR HEAD ASSEMBLY
SPRING LOADED
SENSING ELEMENT
991TW Thermowell Temperature Sensor
3.6
CLAMP-ON RESISTIVE TEMPERATURE DEVICE (RTD) INSTALLATION
NOTES
The Clamp-On RTD sensor, with which your 1010BX is supplied, is extremely sensitive and
precise. Its contribution to the performance of your meter can be as important as that of the
liquid sensors. Please consult the installation drawings for details on physical installation
and wiring of the RTD. In order to produce the best possible tracking of the true liquid tem-
perature, try to make your installation conform to the notes on the installation drawing and
these following tips:
Prepare the pipe surface by removing paint to expose bare metal and by smoothing out any
remaining rough spots.
3.5
NOTES ON SYSTEM 1010 ANALOG INPUT MODULES
Single Channel Models
System 1010 meters report input module temperature sensor connections T1 and T2 as
system variables.
Dual Channel/Path Models
The Dual Channel meters report both T1 and T2 as generic variables for both channels.
The Dual Path meters use T1 to report liquid temperature. (Note that T2 is used to
report ambient temperature in some Leak Detector systems.)
The Analog Input of temperature takes priority over the built-in RTD (Resistive Ther-
mal Device) measurement of temperature.
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