Fluid Components International RF83 Glossary
APPENDIX B - GLOSSARY FLUID COMPONENTS INTL
Appendix B. Glossary
ABBREVIATIONS
Delta R (
Delta T
DMM Digital Multimeter
FCI Fluid Components Intl
HTR Heater
LED Light Emitting Diode
RA Repair Authorization
RTD Resistance Temperature Detector
DEFINITIONS
Active RTD The flow element part that senses the fluid flow rate.
Balance A number that is used to balance or match the
Control circuit The portion of the flow switch that conditions, converts, and scales
Differential resistance
Delta -R (
DD
DR) Differential Resistance
DD
(D(D
(DT) Differential Temperature
(D(D
active and reference RTDs when the heater is off.
the flow element signal.
DD
DR) The flow element signal.
DD
Differential temperature
Delta -T (
Flow element The portion of the flow switch that contains the thermowells, RTDs,
Heater (HTR) The flow element part that heats the active RTD.
Local enclosure The enclosure attached to the flow element
Reference RTD The flow element part that senses the fluid temperature.
Remote enclosure The enclosure that contains the control circuit, and is
Resistance Temperature
Detector (RTD) A sensor whose resistance changes proportionally to detector
Thermowell The flow element part that protects the heater and RTD's
DD
DT) The difference in temperature between the active and
DD
reference RTDs.
and produces a signal with a defined relationship to the flow rate.
(contains the wiring terminal block when a remote enclosure is used).
connected to the local enclosure by an electrical cable.
temperature changes.
from the process fluid.
Doc. No. 003147 Rev. B B - 1 Model RF83 Flow Switch
FLUID COMPONENTS INTL APPENDIX B - GLOSSARY
Model RF83 Flow Switch B - 2 Doc. No. 003147 Rev. B
Loading...