Gems Sensors & Controls FS-600 Operating Manual
Instruction Bulletin No. 232790
Rev. B
Thermal Dispersion Flow Switch
FS-600 Series — No Moving Part
Operating and Installation Instructions
Prior to installation, confirm system versus sensor specifications and media compatibility of the sensor. Water hammer
effects should be minimized to prevent potential damage to the unit. Sensor can be mounted in any horizontal, vertical
or skewed orientation; however a fully filled flow body is required for accurate sensing. Correctly installed, the sensor
works maintenance free.
Installation
Apply a sparse amount of thread sealant (Permatex "No More Leaks"®) or Teflon® tape to the male threads intended
for installation. Ensure that the sealant does not enter into the sensor flow area. Hand-tighten the unit in place.
Tighten in additional 1/4 turn increments until a seal is achieved. Do not exceed one and one-half additional turns total.
Specifications
Wetted Materials
Probe
Flow Body
316 Stainless Steel
316 Stainless Steel
Operating Pressure (Max.) 363 PSIG (25 bar)
Operating Temperature -14°F to 140°F (-10°C to 60°C)
Power on Delay Time 15 Seconds Max. (Output On)
Response Time 10 Seconds Max.
Inlet/Outlet Ports 1/2", 3/4", 1", 1-1/2” NPT
Operating Voltage 24 Vdc or 24 Vac +/-15%
Current Consumption Less than 50mA
Switch Contact Rating 30Vac@45mA, 42Vdc @65mA
Switch Logic Normally Open
Ingress Protection IP65
Set Point Accuracy 15%
Set Point Differential 20% (Max.) at 5 to 20 CM/SEC,
15% (Max.) at 25 to 60 CM/SEC
Electrical Termination M12 x 1 (4-Pin) (1 meter cable included)
Approvals CE
WIRING DIAGRAM
Pin 1 (V+) - red
Pin 2 (switch) - green
Pin 4 (switch) - yellow
Pin 3 (V-) - blue
Gems Sensors & Controls | One Cowles Road | Plainville, CT 06062-1198
Telephone: 1-800-378-1600 | Email: info@gemssensors.com | www.GemsSensors.com
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