Simarine and Sensor Wiring Manual

14 STLWXXX WEMA STYLE TANK LEVEL SENSOR Description Technical Specification

STLW200, STLW400 & STLW450 WEMA Style Sensors for both fuel and water provides highly accurate level measurement for a wide variety of applications, including those in severe environments. Measurement is done using “hall effect” with reed switches positioned inside the level tube. A float with built-in magnets then triggers the reed relays generating a potential - free resistance with an ohm value that increases or decreases. The float is the only moving part of the sensors, thereby minimising potential mechanical failures. All sensors are fully insulated to protect against voltage inside the tank. The level sensors are made of stainless steel and can be mounted in almost any tank shape either by standard 5-hole configuration.

Parameter

200mm, 400mm, 450mm 240-33 Ω

Sensor Size

Measuring medium Fuel,Oil, Water

Signal output

Resolution 21mm

Working Temperature -40°C~85°C

Response time 0.1s

316 Stainless Steel OR 304 Stainlless Steel

Housing material

Mounting method Standard SAE 5 hold pattern

Protection Rank

IP67

Cable specs

50cm PVC cable

Dimension and Drawing (mm)

Instructions

To test correct operation, unscrew fuel sender, connect two wires to multimeter, set to resistance and move float up and down by hand. With float at the bottom it should read 0 ohm and at the top 180 ohm.