Datasheet

FLOW SWITCHES
67
FLOW
SWITCHES
www.gems-sensors.co.uk
ROTOR & TURBINE
RotorFlow Switches build an extra level of reliability and protection into your
equipment. By principle of operation, the rotor cannot be deceived into indicating
a positive flow situation when no flow actually exists. Once set to a desired actuation
point, RotorFlow will switch to a ‘no-flow’ condition should the rotor stop for
any reason.
Wetted Materials
Body Polypropylene, Brass, S Steel (Hydrolytically
Stable, Glass Reinforced)
Rotor Pin Ceramic
Rotor Ryton Composite, Colour: Black
Lens Polysulfone
O-Ring Buna N (Metal Body = Viton)
Max. Operating Pressure Polypropylene Body: 7 bar
Metal Body: 14 bar
Max. Operating Temperature Polypropylene Body: 80 °C
Metal Body: 100 °C
Electronics 65°C Ambient
Max. Viscosity 45 cst
Input Power 24 Vd.c. or 110 Va.c.
Relay Contact Ratings (SPDT) 1A, 24 Vd.c. Resistive 0,5 A, 110 Va.c. (230 V a.c.
on request)
Repeatability 2% max. Deviation
Set Point Accuracy (Factory Set) ±5%
Hysteresis max. 15%
Electrical Termination 22 AWG PVC-Jacketed Cable, Length 60 cm,
Colour Code: Red = +Va.c./Vd.c., Black = Ground,
White = N.O., Brown = N.C., Green = Common
Typical Pressure Drop: See Graphs
Specifications
How to Order
Body Port Flow Ranges (l/min) Input Order Number
Material Size Low Range* Standard Range Power BSP NPT
1/4" 0.4 to 4.0 2.0 to 20.0 24 VDC
155425BSPP 155425
Polypropylene 110 VAC 155876BSPP 155876
1/2" 6.0 to 45.0 15.0 to 75.0 24 VDC 155485BSPP 155485
110 VAC 155886BSPP 155886
1/4" 0.4 to 4.0 2.0 to 20.0 24 VDC
156265BSPP 156265
110 VAC 156266BSPP 156266
Brass 1/2" 6.0 to 45.0 15.0 to 75.0 24 VDC 156268BSPP 156268
110 VAC 156269BSPP 156269
3/4" - - - 20 to 112.5 24 VDC 180395BSPP 180395
110 VAC 180396BSPP 180396
1" - - - 30 to 225 24 VDC 181688BSPP 181688
110 VAC 181689BSPP 181689
24 VDC N/A 165073
9/16" - 18UNF 0.4 to 4 2.0 to 20.0
Stainless 110 VAC N/A 165074
Steel 24 VDC 165077BSPP 165077
1/2" 6 to 45 15.0 to 75.0
110VAC 165078BSPP 165078
3/4" - - - 20 to 112.5 24 VDC 181691BSPP 181691
110 VAC 181692BSPP 181692
1" - - - 30 to 225 24 VDC 181693BSPP 181693
110 VAC 181694BSPP 181694
* With use of Low-Flow-Adapter supplied,
Switch Set Point Calibration With LED Signal
(RFS Type)
With the unit installed in the line and power supplied,
complete the following steps to calibrate switch actuation
point with proper flow rate. A small flat-blade screwdriver
is the only tool required.
1. Adjust liquid flow in the line to the rate at which
switch actuation is desired.
2. Insert screwdriver into opening on backside of
housing and fit blade into the potentiometer
adjustment screw inside.
3. If LED is not illuminated, slowly turn screwdriver
counterclockwise and stop as soon as LED
illuminates.
4. If LED is illuminated, turn screwdriver clockwise until
LED light goes out. Then, slowly turn screwdriver
counterclockwise and stop as soon as LED
illuminates.
LED
SCREW
Standard Products in bold
RotorFlow - RFS Types Flow Setpoint Switching