K25 Level Switch

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 outputThese 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)(*)
-404400
-305500
-206600
-107700
08800
109900
20101000
30111100
40121200
50131300
60141400
70151500
80161600
90171700
100181800
110191900
120202000

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

MECHANICAL DIMENSIONS:
ELECTRICAL CONNECTION: