- For liquids limit level sensing on non-conductive (glass or plastic) gauge-pipes, tubes and tank walls
- Miniature performance in plastic housing
- Simple sensitivity setting by means of magnetic pen
- Variants with fi xed cable or a connector
- Two-wire connection directly to the relay circuit or PLC input
- LED state indication
Through wall level switches GPLS–25 are intended for liquid (conductive and non-conductive) level detection on glass or plastic gauge-pipes, tubes and tanks. The sensitivity and modes (SO – normally open or SC – normally closed) of the switches can be easily set by placing magnetic pen on sensitive spot. The connection is done by means of two wires directly into a circuit with relay or to binary input of control system.
FEATURES OF VARIANTS
GPLS–25N –0
- Prismatic (refracted) electrode, shape-adapted to be attached to the gauging pipe or other tube. The fi xing of the sensor onto a pipe is provided by plastic straps
GPLS–25N –1
- Planar electrode, suitable for installation on fl at surfaces (e.g. plastic or glass tanks). The sensor can be fi xed with plastic straps or by double sided adhesive layer
ELECTRICAL CONNECTION
Positive pole (+ U) of power supply is connected through a load (relay) to brown wire or pin connector No. 1, negative pole (0V) is connected to white wire or pin connector No. 3. The sensor output is protected against short circuits. Capacity loads and loads with low sleep resistance (bulb) the sensor evaluates as a short circuit.
SENSOR SETTINGS
The setting is done by placing magnetic pen MP–8 to sensitive spot M located on the front of the sensor. Short time attaching (up to 2 s) of the magnetic pen to the sensitive spot M makes the sensor open, attaching for a longer time (at least 4 s) the sensor closes. In this way is set the sensitivity for the measured medium and switching modes SO (normally open) or SC (normally closed). When changing the fl uid it is necessary to make the new setting.
CORRECT SPECIFICATION EXAMPLES
- GPLS – 25N – 0 – A–S Cable 5 m
- GPLS – 25N – 1 – C – S + Type of the connector
ACCESSORIES
Standard – included in the level sensors price
- 2 pcs of Plastic straps 2.5 x 200 mm
- 1 pc of Double-side self adhesive tape (GPLS–25N–1)
- 1 pc of Magnetic pen MP–8
Optional – for extra charge
SAFETY, PROTECTIONS AND COMPATIBILITY
The level sensor is equipped with a protection against electric shock on electrode, polarity, overvoltage and short-term current overload on the output.
Electromagnetic compatibility is provided by conformity with standards EN 55022 / B, EN 61326-1, EN 61000-4-2 ,-3, -4 and -6.
