top of page

/

/

/

Thermal Flow Switch

Thermal Flow Switch - F20

Highly stable flow switch for all industries.

Compact design, IP67 protection class

F20.jpg
Overview

F20 is based on two temperature sensors which are positioned within the medium. The unheated sensor registers the liquid temperature, the other sensor is heated a few degrees above the medium. When medium flows, the heat generated in the sensor is conducted away by the medium. The temperature of the sensor is measured and compared to the temperature of the medium. The state of flow can be derived by the temperature difference.

Specifications
Measuring range

Water: 1…150 cm/s (0.03...5 ft/s)

Oil: 3…300 cm/s (0.1...10 ft/s)

Gas: 20…2000 cm/s (0.65...65 ft/s)

Accuracy

5% of full span

Applicable medium

Water / Oil / Gas

Repeatability

1% @ <0.6 m/s (2 ft/s)

3% @ <1.5 m/s (5 ft/s)

10% @ >1.5 m/s (5 ft/s)

Display

1 red LED (Flow velocity < switch point)

1 yellow LED (Flow velocity = swtich point)

4 greed LEDs (Flow velocity > switch point)

Electrical connection

M12 x 1

Pressure rating

100 bar (1450 psi)

Medium temperature

-20…85°C (-4...185°C)

Material

Housing: Aluminum

Probe: stainless steel 304

Protection class

IP67

Applications

 

Leak monitoring

Cooling system

Pump protection

Water treatment

Hydraulic and lubrication system

 

......

 

Benefits

Compact design - diameter 36mm

Protection class IP67

8 LEDs for flow and switch state

High turndown ratio

Related products
F10.jpg

Piston flow switch F10

A cost efficiency flow switch for small size pipes, work with either liquid or gas.

bottom of page