SP Series Thermal Dispersion Flow Switch
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PRODUCT INTRODUCTION OPERATING PRINCIPLE Thermal dispersion flow switches measure the velocity of a liquid inside a pipe or channel. The switch’s probe contains two key components – a heating sensor and temperature sensor. The heating sensor is positioned closest to the flowing liquid and provides a consistent heat. The temperature sensor measures the temperature emitted from the heating sensor. When liquid is flowing, there is a temperature difference between the two sensors. The temperature difference has an inverse relationship with the flow velocity (fast flowing liquids will result in...

PRODUCT SPECIFICATIONS SP202-9-99-9-9 High Temp. model Ambient temp. Operating temp. Model Measuring range Open Collector : NPN / PNP (<400mA) Relay : 1A/30Vdc, 0.3A/125Vac (NO or NC) Alarm output Operating pressure Flow velocity below set point- Red LED on, Open Flow velocity equals set point- Yellow LED on, Close Flow velocity above set point- 4 Green LED to indicate flow speed, Close Wetted part Protection level Warm-up time Connection thread Operating voltage Power consumption 3-wire NPN/PNP Power-brown Grounding-blue Output-black

PRODUCT SPECIFICATIONS Model Measuring range Ambient temp. Operating temp. Alarm output Operating pressure Housing Wetted part Protection level Open Collector : NPN / PNP (<400mA) Relay : 1A/30Vdc, 0.3A/125Vac (NO or NC) 100 bar (max.) Flow velocity below set point- Red LED on, Open Flow velocity equals set point- Yellow LED on, Close Flow velocity above set point- 4 Green LED to indicate flow speed, Close PC SUS304 / 316 / 316L IP65 Warm-up time Connection thread Operating voltage Power consumption 3-wire NPN/PNP Power-brown Grounding-blue Output-black Sensitivity and Alarm setting not...

PRODUCT SPECIFICATION SP210 Stainless Steel model Cert. Number GYJ12.1521x Model SP170-(½) Explosion Proof model SP171-(½) Explosion-proof extension model Measuring range Ambient temp. Operating temp. Alarm output Operating pressure 100 bar (max.) Flow velocity below set point- Red LED on, Open Flow velocity equals set point- Yellow LED on, Close Flow velocity above set point- 4 Green LED to indicate flow speed, Close Wetted part Protection level Warm-up time Connection thread Operating voltage Power consumption 60mA (max.) 5-wire Relay Output Power- red Grounding- black COM- white NC-...

INSTALLATION 4. Screw tightly to avoid. Can be installed from various angles. For best sensitivity and response speed, please install using in the demonstrated in Fig. 4 5. Installing a filter upstream can decrease liquid impurities which can reduce wear and tear on the switch. 1. Use the water-proof gasket provided 2. The distance "a" should be 4 times larger than the switches’ screw diameter. (Fig. 1) 3. The pipe is bubble free for proper functioning. (Fig. 2) 4. For not-completely-filled pipes, install from the bottom. The liquid level needs to be higher than the probe height. (Fig. 3)

Fig. 5 Wire terminal diagram (NPN, PNP and 1A relay output type) Fig. 7, NPN output type wiring Brown Blue Green Black Fig. 10, Relay output type wiring (NO) Fig. 8, PNP output type wiring Brown Blue Green Black Fig. 11, Relay output type wiring (NC) SCREW TABLE Black White Yellow Blue Fig. 9, Relay output type wiring

SP29 9- 9 - 99 - 9- 9 - ( 9999 ) Model Description 0 : Compact model 1 : Stainless Steel model f 70X78 (for SPDT 5A/250Vac ) 2 : Economy model ( Plastic Housing ) Probe Type 0: Standard model 1: Probe Extension model 2: 120BC High Temperature model ( Except SP220 ) Output N: NPN (current limit: 400mA) P: PNP (current limit: 400mA) A: Relay 1A/30Vdc (NO) B: Relay 1A/30Vdc (NC) C: Relay 5A/250Vac (SPDT) (for SP210/ SP211/ SP212) Cable Wire Length(unit: m) 2: 2m Length L (Unit: mm) ※ Length tolerance: A5mm ※ Dimensions are subject to change ※ Customized lengths available on request * Max.200mm

Model Description - 70 —Explosion Proof Type Size Specification Dimensions are subject to change Customized lengths available on request * Max.200mm

PADDLE TYPE FLOW SWITCH SECTIONAL DRAWINGS Flow Switch can detect liquid movement in pipes. When the liquid is static or nonexistent, the spring is fully extended pulling the magnet downward and opening the switch. As flow occurs and the paddle is thrusted forward 20BC~30BC (or more) the paddle will push the magnet upward and actuate the switch (closing the circuit) The length of paddle can be adjusted to the pipe's diameter. 2. Paddle 3. Axis 4. Reed switch reed switch axis paddle MODEL: SF1800 MODEL: SF1710 Explosion proof model Standard model 70 Switch on in case of liquid flowing in...

Housing material Operation temp. Wetted material Pressure drop allowance Repeatability tolerance Operation pressure Contact capacity FLOW CONTROL RANGE TABLE 1" Flow Volume Paddle Length Act. De-Act. Act. De-Act. Act. De-Act. Act. De-Act. Act. De-Act. 1. The paddle length is dependent on the lowest paddle point to actuate the switch. Cut the paddle at appropriate pipe size mark or wherever desired. The minimum is 1". 2. The paddle must be at a right angle to the direction of flow 3. The FLOW mark on the screw must be parallel to the pipe. 4. Before installing the unit to a tee pipe, apply...

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