K25 4-20mA Level Switch up to 150bar

FOTO K25 OK

DESCRIPTION

The K25 optical level switches are designed for use in level monitoring for controlling the oil or liquid CO2 in transcritical or sub critical applications. They have bodies made of stainless steel and sensor dome made of glass. They are economicaldependable, and compact in size with overall dimensions of 90 x 36 mm and have no moving parts. They not only sense the level but also measure the temperature of the liquid via 4-20mA output. These level switches use infrared technology for their operation. They have an operating temperature range of -40 to 125 deg C. There is a programmable timer inside these K25 optical level switches that allows a delay time to be set for delaying the output switching. The output modes are normally closed in presence of liquids and open in air or vice versa. The DC digital output current is up to 50mA depending on model and the temperature output is 4-20mA analogue current output These level switches must not be installed close to any infrared sources. The dome must be at least 50mm away from any reflective surface (directly contact us for lower distance installations). They have electronic protection against transient over voltage and reverse polarity. The K25 optical level switches have a detection accuracy of +/- 2 mm. They can withstand maximum pressure of 150 bars.






    TECHNICAL DATA:
    Operation mode:
    Detect liquid presence with contact
    Repeatability:
    ± 2 mm
    Body materials:
    Stainless Steel
    Sensible dome:
    Glass
    Enclosure protection class:
    Transient over voltage, reverse polarity
    Max. Temperature range:
    From –40ºC up to +125ºC
    Storage Temperature:
    From –40ºC up to +125ºC
    Supply voltage:
    24 VDC ± 10%
    Supply current:
    20mA max
    Output type:
    NPN
    AC / DC Output current:
    up to 50 mA max
    Output mode:
    Output Normally Open or Closed in the air
    Temperature output type:
    Analogical from 4 to 20 mA
    Max working pressure:
    up to 150 bar
    Delay times:
    Customizable depending on application needings
    TEMPERATURE REFERENCES:
    Temperature (°C) Current (mA) Voltage (mV)(*)
    -40 4 400
    -30 5 500
    -20 6 600
    -10 7 700
    0 8 800
    10 9 900
    20 10 1000
    30 11 1100
    40 12 1200
    50 13 1300
    60 14 1400
    70 15 1500
    80 16 1600
    90 17 1700
    100 18 1800
    110 19 1900
    120 20 2000

    (*) Example with an external load of 100 ohm resistor

    MECHANICAL DIMENSIONS:
    ELECTRICAL CONNECTION: