Operating Principle:
The Model 62-9 Thermal Flow Transducer operates using a constant temperature system
that employs two RTD sensors: one for sensing temperature, and one for sensing flow.
The flow sensor is heated to a precise temperature above that of the fluid passing by.
The fluid conducts heat off the sensor in direct proportion to the mass flow rate.
The temperature sensor is used to set the heat on the flow sensor and correct changes
in the fluid temperature.
Thermal Instrument's thermal mass flow meters consist of two pieces; a flow element with
a bridge controller, and a remote signal conditioner with power supply, flow signal,
A/D converter, linearizing network, 4-20 MA DC isolated flow output, operational flow display,
totalizer, pulse and temperature outputs.
