Characteristics: Using the scale formation-proof probe and sealed structure, can prevent the sundries in the medium twining around. Visual display and easy to adjust.

 Profile
Thermal Flow Switches, based on heat exchange principle, are built in a heating module and a temperature sensitive module. Thermal conductivity is closely linked to flowing speed of medium, e.g., temperature sensitive module shall receive a fixed thermal value if there is no flowing medium, on the other hand, the module shall receive a changing thermal value over flowing speed of medium. In process of measurement, temperature sensitive module shall measure the temperature from heat produced by heating module, and then thermal switch shall transfer temperature difference signal into a corresponding electrical signal, thereby displaying through indicators and controlling flowing speed.
Flow probe of flow switch and signal processor are integrated together. The probe is covered with a special anti scaling coating with high-pollution resistant property; six led indicators display current flow speed; action value of the switch can be adjusted through a corresponding adjustment screw; the switch is provided with optional transistor or relay output manner.
To achieve good sealing effects and integrate action point conveniently, the switch adopts special completely sealed adjustment structure. Thereby, the switch is capable of integrate outer adjustment screw directly without affecting product sealing in the filed.
Main Technical Parameters:

Measurement Range:                water:0~3m/s
                                                        oil:0~10m/s
Maximum Pressure:                 10MPa
Corresponding Time for Temperature Change: ≤12s
Switch Time:                        ON, typical 2s (1~13s); OFF, typical 2s (1~15s)
Operating Voltage:                   24Vdc, subject to real goods
Power Loss:                         2W (24Vdc)
Output Mode:                        level output: NPN or PNP
                               relay output: 1 couple of on/off contact
Contact Capacity:               level output: 200mA
                               relay output: 1A/220Vac, 2A/30Vdc
Insulation Resistance:           100MΩ (500Vdc)
Connection Mode:               thread, G1/2", please see dimension diagram
Indicator:                       red light refers to flow speed below settings
                               yellow light refers to flow speed around settings
                               green light refers to flow speed above settings
Visual Direction:                 with a adjustable range of 0~360°
Probe Material:                  SUS304
Enclosure Material:           Aluminium alloy and stainless steel
Ambient Temperature:           -40℃～80℃, ≤95%RH, avoid strong corrosive gas
Protection Class:                IP67