Horizontally Mounted Hazardous Area Float Switch for Intrinsically Safe Systems (HFS FP)
Product Description
The HFS FP intrinsically safe switch is a horizontal magnetic float switch for control and indication of a liquid level whilst in a potentially explosive atmosphere. Manufactured in 316L Stainless Steel, it is a horizontally mounted Liquid Level Sensor ideally suited to high temperature or pressure operation. It is also suitable for harsh environments and chemically aggressive liquids. It can be changed from Normally Open to Normally Closed operation to allow for sensing of high or low conditions by rotating the orientation of the body through 180°.
Refer to certificate ExVeritas 14ATEX0427X for clarification of system suitability and conditions for safe use. This switch must be used in conjunction with an intrinsically safe barrier when used in a potentially explosive atmosphere.
Download the Datasheet here: HFS-FP Datasheet and Certificate
Technical data and ATEX coding
HFS FP-xxx-01/02
Ex II 1G IIC T4/T6 Ga
Ex II 1D IIIC 135°C/85°C Da
-20°C≤Tamb≤+100°/+60°C
HFS FP-xxx-02DIN
Ex II 1G IIA T4/T6 Ga
Ex II 1D IIIA 135°C/85°C Da
-20°C≤Tamb≤+100°C/+60°C
| Minimum Liquid Specific Gravity | 0.9 |
| Maximum pressure | 350psi 24bar |
| Ambient and liquid Temperature | -20°C to +100°C-20°C to +60°C in Gas T6 / Dust T85°C environment |
| Switch contact Rating | FormA: <240V*, 1A*, 50Watts* MAXFormC: <175V*, 500mA*, 10Watts *MAX*Maximum safety barrier ratings apply when used in hazardous area |
| Cable type | 1 Metre PTFE insulated 7/0.2mm3 Metre on request |
| Cable colours | Form A: 2x Blue Form C: Violet: Common Yellow: Normally open Blue: Normally closed |
| Mounting | M16 internal mount3/4” NPT external mount |
| Wetted Materials | 316L Stainless Steel |