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1010PVNFM-3A
Section 3
THERMAL COUPLANT
991T CLAMP-ON TEMPERATURE
SENSOR (MATCHED PAIR REQUIRED)
CUSTOMER’S PIPE
1012EC SERIES CABLE
992EMTN MOUNTING
ASSEMBLY
3.2
MOUNTING TEMPERATURE SENSORS
In order to accurately measure temperature differential in energy flow loops, Controlotron’s
Energy Flowmeters are designed to work with a pair of matched temperature sensors. These
are available in clamp-on style 991T, or in insert (thermowell) style 991TW. Both styles incor-
porate 1000 ohm platinum RTD’s for high precision.
1012EC SERIES CABLE
THREADED PIPE FITTING
THERMOWELL
THERMAL COUPLANT
PIPE WALL
991TW TEMPERATURE SENSOR
CONNECTOR HEAD ASSEMBLY
SPRING LOADED
SENSING ELEMENT
Once the transducer is in place, Secure it with its clamping screw. Do not overtighten.
NOTE: Some transducers require a right-angle adapter. This adapter should be in-
stalled before placing the transducer in the tracks.
10. Connect the transducer cable, ensuring that you have observed the Upstream/Downstream
orientation in respect to the cable and the input jack on the flow computer. If this is a dual-
channel unit, make sure you are connecting the cables to the correct channel input jacks.
Clamp-on style sensors are mounted on the surface of the monitored pipe using 992EMT
series mounting assemblies. Apply a generous quantity of the thermal couplant provided
to the tip of the sensor and attach it securely to the cleaned pipe surface with the proper
mounting assembly. Temperature measurement anomalies resulting from variations in the
ambient conditions can be minimized by insulating the pipe and sensor after install-
ation.
Содержание 1010PVDN
Страница 185: ...APPENDIX A Couplant Installation Instructions...