Pressure switch FF 4 ATEX

Pressure switch FF 4 ATEX

For intrinsically safe circuits

Protection class: IM2 Ex ia IMb for mining applications

Protection class: II 2G Ex ia IIC T6 Gb for chemical applications

Change-over contact

product description Pressure switch FF 4 ATEX

Mechniacal Pressure switch with Protection class: IM2 Ex ia IMb for mining applications
Pressure switch with perbunan diaphragm and Zinc pressure connector:
Pressure range from 0,11...16 bar
High pressure switch with plastic plunger and stainless steel pressure connector:
Pressure range from 4... 250 bar
Pressure connector: H (G 3/8" Female thread, DIN 1725/2), stainless steel. VDE 0660, IEC 337-1, IEC 553-1

Mechanical Pressure switch with Protection class: II 2G Ex ia IIC T6 Gb for chemical applications
Pressure switch with perbunan diaphragm and pressure connector G 3/8“
Pressure range from 0,11...32 bar
Pressure switch with stainless steel bellows:
Pressure range from 1...30 bar
Pressure connector: G (G 1/4“ Female thread and stainless steel pressure connector)
High pressure switch with plastic plunger and stainless steel pressure connector:
Pressure range from 4... 250 bar
Pressure connector: H (G 3/8" Female thread, DIN 1725/2), stainless steel. VDE 0660, IEC 337-1, IEC 553-1

Applies for both ranges:
Ample wiring room
Easy to adjust, upper and lower switch points can be adjusted independently of each other
High repeatability
Easily read scale

Mining applications

Order
reference

Upper
switch point
adjustable (bar)

Lower
switch point
adjustable (bar)
Smallest
diff.*
(bar)
Max.
operating
pressure (bar)
Max.
test
pressure (bar)
Standard
setting
(bar)
Part No.
FF 4-2 AB DAH 0,11 ... 2 0,04 ... 1,89 0,07   0,11 20 40 0,5 / 1,5 1030133
FF 4- 4 AB DAH 0,22 ... 4 0,07 ... 3,75 0,15   0,25 24 40 1 / 3 1030134
FF 4- 8 AB DAH
0,5 ... 8 0,2 ... 7,5 0,3   0,5 30 40 2 / 6 1030135
FF 4-16 AB DAH
1 ... 16 0,4 ... 15 0,6   1 36 48 4 / 12 1030136
FF 4-60 AB PAH
8 ... 60 4 ... 52 4   8 100 120 20 / 40 1030138
FF 4-120 AB PAH
16 ... 120 8 ... 104 8   16 200 240 20 / 80 1030139
FF 4-250 AB PAH
30 ... 250 14 ... 226 12   24 400 500 100 / 200 1030140
          * at lower ... higher end of range

 

Chemical applications

Order
reference

Upper
switch point
adjustable (bar)

Lower
switch point
adjustable (bar)
Smallest
diff.*
(bar)
Max.
operating
pressure (bar)
Max.
test
pressure (bar)
Standard
setting
(bar)
Part No.
FF 4-2 AC DAH 0,11 ... 2 0,04 ... 1,89 0,07   0,11 20 40 0,5 / 1,5 1030141
FF 4- 4 AC DAH 0,22 ... 4 0,07 ... 3,75 0,15   0,25 24 40 1 / 3 1030142
FF 4- 8 AC DAH
0,5 ... 8 0,2 ... 7,5 0,3   0,5 30 40 2 / 6 1030144
FF 4-16 AC DAH
1 ... 16 0,4 ... 15 0,6   1 36 48 4 / 12 1030145
FF 4-12 AC DAH
2 ... 32 0,8 ... 30 1,1   2 52 64 10 / 20 1030146
FF 4-60 AC PAH
8 ... 60 4 ... 52 4   8 100 120 20 / 40 1030147
FF 4-120 AC PAH
16 ... 120 8 ... 104 8   16 200 240 20 / 80 1030149
FF 4-250 AC PAH
30 ... 250 14 ... 226 12   24 400 500 100 / 200 1030150
         

* at lower ... higher end of range

 

Chemical applications

Order
reference

Upper
switch point
adjustable (bar)

Lower
switch point
adjustable (bar)
Smallest
diff.*
(bar)
Max.
operating
pressure (bar)
Max.
test
pressure (bar)
Standard
setting
(bar)
Part No.
FF 4-12 AC AAG
1 ... 12 0,5 ... 11,2 0,5   0,8 12 16 6 / 7 1030131
FF 4-30  AC AAG
4 ... 30 1 ... 26,4 1,8   3,6 30 42 16 / 20 1030132
         

* at lower ... higher end of range