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Explosion Proof Pressure Switch
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Explosion Proof Pressure Switch ( Model - STF )
 
Technical Specification
Product and Description Flame proof pressure switch Exd IP65
Product Code STF
Range As required
Sensing Elements Diaphragm / Piston SS316L
Wetted Part SS 316
Enclosure Flame proof Exd IIA IIB Certified By ERTL , BIS & CCOE
Protection IP65
Enclosure Die cast Aluminum
Micro switch – SPDT/ 2 SPDT Contact
Electrical rating 5A / 15A 250V AC ,
Repeatability + - 1% of FS
Scale accuracy +-3% of FS
Differential Fixed / Adjustable Type
Process Connection 1/4" BSP(F)
Cable entry 3/4" ET
Mounting Wall / Pipe
NOTE: Range & differential value refer attached chart
 
SWITCHING DIFFRENTIAL VALUE: WEATHERPROOF / FLAMEPROOF PRESSURE SWITCH
 
Range(mbar) Differential (mbar) Differential (mbar) Differential Switch HP/LP (mbar) Sensing element
Min. - Max. Fix Adjustable MIN. - Max. MIN. - Max.  
-20 to 20 4 xxx xxx Diaphragm
3 to 20 4 xxx xxx Diaphragm
5 to 60 4 xxx xxx Diaphragm
10 to 100 5 4 to 27 4 to 27 Diaphragm
25 to 250 5 6 to 40 6 to 40 Diaphragm
40 to 400 12 15 to 100 15 to 100 Diaphragm
60 to 600 15 20 to 120 20 to 120 Diaphragm
100 to 1000 15 20 to 140 20 to 140 Diaphragm
 
Range(bar) Differential (bar) Differential (bar) Differential Switch HP/LP (bar) Sensing element
Min. - Max. Fix Adjustable Min. - Max. MIN. - Max.  
-1 to 0 0.04 0.05 to 0.3 xxx Diaphragm
-1 to 2 0.08 0.1 to 0.6 xxx Diaphragm
-1 to 4 0.1 0.1 to 0.8 xxx Diaphragm
0.2 to 2 0.1 0.05 to 0.8 0.05 to 0.8 Diaphragm
0 to 4 0.2 0.5 to 1.5 0.5 to 1.5 Diaphragm
0 to 6 0.2 0.5 to 1.5 0.5 to 1.5 Diaphragm
1 to 10 0.2 1 to 3.5 1 to 3.5 Diaphragm
1 to 16 0.4 2 to 3.5 2 to 3.5 Diaphragm
2 to25 2 2 to 8 2 to 8 Diaphragm
2 to 32 2 2 to 8 xxx Diaphragm
4 to 40 3 3 to 12 xxx Diaphragm
5 to 60 3 xxx xxx Piston
10 to 100 4 xxx xxx Piston
25 to 250 12 xxx xxx Piston
40 to 400 15 xxx xxx Piston
60 to 600 18 xxx xxx Piston
Flameproof Switch 1 SPDT differential will be 1.5 times For 2 SPDT differentials will be 2 times
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Weather Proof Differential Adjustable Pressure Switch
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Weather Proof Differential Adjustable Pressure Switch ( Model - STA )
 
Technical Specification
Product Code STA...
Range As required
Sensing Elements PB Bellows
Enclosure Weather proof
Protection IP65
Enclosure Die cast Aluminum
Micro switch SPDT Contact
Electrical rating 5A 250V AC
Repeatability + - 2% of FS
Scale accuracy +- 5% of FS
Differential Adjustable Type
Process Connection 1/4" BSP(F)
Cable entry 3/4" ET
 
Switching Range
Range(Bar) Min. - Max. Differential (Bar) Min. - Max.
0 to 3 0.25 to 1.5
0 to 6 0.6 to 3
0 to 10 1 to 3`
3 to 16 1 to 4
5 to 20 2 to 5
5 to 30 5 to 12
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