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SAFETY PRECAUTIONS
Step Two
About this Manual:
PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR USING THIS PRODUCT.
This manual includes information on all models of Flowline Thermo‐Flo™ Flow Switches: FT10 and GT10 series.
Please refer to the part number located on the switch label to verify the exact model which you have
purchased.
User’s Responsibility for safety:
Flowline manufactures a wide range of flow switches and technologies,
while each of these sensors is designed to operate in a wide variety of applications, it is the user’s
responsibility to select a sensor model that is appropriate for the application, install it properly, perform tests
of the installed system, and maintain all components. The failure to do so could result in property damage or
serious injury.
Proper Installation and Handling:
Because this is an eclectically operated device, only properly trained
staff should install and/or repair this product. Use a proper sealant with all installations.
Note:
Always install
the 3/4” Viton gasket with all versions of Thermo‐Flo™ with metric threads. The G threaded version will not
seal unless the gasket is properly installed.
Never over tighten the sensor within the fitting, beyond a
maximum of 80 inch‐pounds torque. Always check for leaks prior to system start‐up.
Material Compatibility:
The FT10 and GT10 series sensors are available in two different wetted materials.
Models FT10‐1__5 and GT10‐1__5 are made of Polypropylene (PP) with Ryton® tips. Models FT10‐5__5 and
GT10‐5__5 are made of Polyvinylidene Fluoride (PVDF). Make sure that the model you have selected is
compatible with the application liquid. To determine the chemical compatibility between the sensor and its
application liquids, refer to an industry reference such as the Compass Corrosion Guide (available from
Compass Publications).
Wiring and Electrical:
The supply voltage used to power the sensor should never exceed a maximum of 36
volts DC. Electrical wiring of the sensor should be performed in accordance with all applicable national, state,
and local codes.
Flammable, Explosive and Hazardous Applications: DO NOT USE THE FT10 OR GT10 SERIES GENERAL
PURPOSE FLOW SWITCHES IN HAZAROUS LOCATIONS.
Warning
The rating for the relay is 60 VA, 1Amp max.
Flowline’s Thermo‐Flo™ flow switches are not recommendable for use with electrically charged
application liquids. For most reliable operation, the liquid being measured may need to be
electrically grounded.
The sensing tip of the sensor must always be submersed in the liquid and never exposed to air.
The liquid temperature must remain constant and not change throughout the process.
