HIGH RANGE PRESSURE DIFFERENCE SWITCHES
DP
PRESSURE CAPSULE DETAILS
Note : wetted parts are mentioned in italics.
1
1
2
2
3
3
Description
Pressure housing
Diaphragm
Plunger
No.
1.
2.
3.
INSTALLATION DRAWING
APPROX. DIMENSIONS IN
mm
inches
Set
Screw
Terminal
Strip
120
55
85
4.72
2.17
3.35
25
0.98
Low Pr. Port
High Pr. Port
1/4” BSP Fem.
1/4” BSP Fem.
4 Nos. Mtg.
Ø0.22
Holes Ø5.5
104
4.09
LP
HP
25
0.98
Cable Gland
7
278
Bulletin No. KA121024
General information:
DP series pressure difference switches are housed in
pressure die cast aluminium powder coated enclosure
and are recommended for panel mounting or indoor
service based on the type of enclosure opted for. The
repeat accuracy is better than ± 1 % FSR. A 3/8" cable
entry is provided for cables and a terminal strip suitable
for wired ends is provided inside the enclosure. Pressure
ports are ¼ " BSPF standard.
Features:
!
Compact
!
Separate chamber for working parts
!
Choice of wetted parts to suit working media
!
Electrical rating : 5A, 250 VAC; 0.2 A, 250 VDC
(res.)
!
Pressure ports: ¼" BSPF
Some Applications : Works on opposed diaphtagm
principle, diaphragm seals can be coupled to this
switch. Used in water treatment plants, bag filters,
strainers, etc.
HIGH RANGE PRESSURE DIFFERENCE SWITCHES
DP
*Minimum differential increases with setpoint (Graphs available on request)
Range Selection Table
Maximum Working
Pressure bar (psi)
12
(174.05)
12
(174.05)
12
(174.05)
12
(174.05)
12
(174.05)
25
(362.6)
25
(362.6)
35
(507.63)
Range
Code
H01
H02
H03
H04
H07
H10
H15
H30
Range
bar (psi)
0.1 - 1.0
(1.45 - 14.50)
0.1 - 1.5
(1.45 - 21.76)
0.2 - 2.6
(2.90 - 37.71)
0.2- 3.6
(2.90 - 52.21)
0.5 - 7.0
(7.25 - 101.52)
0.5 - 10.0
(7.25 - 145.04)
1.0 - 15.0
(14.50 - 217.71)
5.0 - 25.0
(72.52 - 362.6)
?P
Approximate Maximum
Differential* bar (psi)
0.15
(2.18)
0.15
(2.18)
0.2
(2.90)
0.2
(2.90)
0.2
(2.90)
0.5
(7.25)
0.5
(7.25)
1.0
(14.50)
Please specify full model number to avoid ambiguty. If only the first two groups are specified while ordering, uncalibrated switches
with standard wetted parts and enclosures will be supplied.
How to order DP series high range pressure difference switches
DP -
Pressure Difference
Switch (Can be used
for both side Positive`
Pressures Only)
H - High Pressure
Range
U - Uncalibrated
C -Calibrated
A -Aluminium
B -Brass
S -SS 316
0 - Neoprene
1 - Teflon
0 - IP 54
Group 1
Model
Group 2
Range Code
Group 3
Range Scale
Group 4
Pressure Housing
Group 5
Diaphragm
Group 6
Enclosure
eg. A pressure difference switch, high pressure range from 0.1-1.5 bar in calibrated style with brass pressure housing & a teflon diaphragm as
wetted parts, with IP54 Enclosure shall be specified by
Group 1 Group 2
Group 3 Group 4 Group 5 Group 6
DP
H02
C
B
1
0
7
279
Bulletin No. KA121024
for special wetted parts through chemical seals,
please refer page 330,331 & 332
and specify in text accordingly.