H1U Hydraulic Range DP
Product Information: – Product Name: MD/MT Hydraulic Range
DP – Model: MD or MT – Enclosure Rating: IP66 as per IS/IEC 60529 –
Pressure Range: H1U, H2U, H3U, H4U, H7U, D1T, D2T, D3T, D4T, D1H,
D2H – Differential Type: Fixed or Adjustable – Maximum Working
Pressure: 150 bar (2175 psi) – Diaphragm Material: Not specified –
Cable Entry Size: 1/2 NPT Threads (Options Available) Product
Usage Instructions: 1. Installation: – Refer to Installation
Drawing 147.0 for the correct installation procedure. – Ensure that
the wetted parts mentioned in italics are installed correctly. –
Mount the product using the provided mounting holes. – Connect the
high-pressure port to the desired hydraulic system. – Connect the
low-pressure port to the desired reference pressure point. – For
cable entry, use 1/2 NPT threads or select the appropriate option.
2. Range Selection: – Refer to the Range Selection Table to
determine the desired pressure range. – Choose the appropriate
Range Code based on the required pressure range. – Note that the
differential values mentioned in the table are approximate maximums
for FSR (Full Scale Range). – The actual differential value may
vary depending on the pressure range selected and microswitch type.
– Contact the sales office for accurate differential values. 3.
Differential Type: – Choose between fixed differential (DF) or
adjustable differential (DA) based on your requirements. – Fixed
differential models have a set differential value without a scale.
– Adjustable differential models allow you to set the desired
differential within a given range. 4. Ordering: – Use the provided
How to Order guide to specify the required product configuration. –
Select the appropriate options for each group (1 to 8) to customize
the product according to your needs. – For non-standard options not
covered in the catalogue, contact the manufacturer for further
assistance. Note: It is important to follow the product manual and
consult with the sales office or manufacturer for specific details
and accurate differential values.
MD/MT HYDRAULIC RANGE DP MD
PRESSURE CAPSULE DETAILS
3
2
Note : wetted parts are mentioned in italics.
INSTALLATION DRAWING 147.0
(5.78)
Set Screw Cap
112.5 (4.43)
130.0 (5.11)
No. Description 1. Pressure Housing (SS) 2. Diaphragm (SS or PTFE®)
3. Plunger (SS)
1
4. O-Ring (Viton)
5. Disc (Al)
4
5
62 (2.44)
20 (0.78)
71 (2.79) 78 (3.07)
161 (6.33)
Mounting Holes
2 Nos, Ø6.5 0.25
High Pressure Port
37 (1.45)
Bulletin No. KA220802
Cable Entry 1/2″ NPT Threads (Options Available) Low pressure Port
96
L
Pressure port
1/4″ BSP (F)
30
(1.18)
APPROX. DIMENSIONS IN
mm inches
MD/MT HYDRAULIC RANGE DP
RANGE SELECTION TABLE
Range Code H1U
Range bar (psi) 0.1 – 1.0 (1.45 – 14.50)
Differential* bar (psi)
Approximate Maximum for “A1″
microswitch
0.30 (4.35)
Maximum Working Pressure
bar (psi) 150
(2175)
H2U
0.2 – 1.5 (2.90 – 21.75)
0.30 (4.35)
150 (2175)
H3U
0.2 – 2.6 (2.90 – 37.7)
0.40 (5.8)
150 (2175)
H4U
0.2 – 3.6 (2.90 – 52.2)
0.40 (5.8)
150 (2175)
H7U
0.5 – 7.0 (7.25 – 101.5)
0.80 (11.60)
150 (2175)
D1T
1.0 – 10.0 (14.50 – 145)
1.00 (14.50)
200 (2900)
D2T
2.0 – 20.0 (29.00 – 290.70)
2.00 (29.00)
200 (2900)
D3T
3.0 – 30.0 (43.51 – 435.11)
2.50 (36.25)
200 (2900)
D4T
5.0 – 40.0 (72.50 – 580)
4.00 (58)
400 (5800)
D1H
10 – 100 (145.00 – 1450)
10.00 (145)
400 (5800)
D2H
10.0 – 200 (145.00 – 2900)
20.00 (290)
400 (5800)
Note:
1. The minimum differential increases with the setpoint. The differential values mentioned in the above table are approximate maximum for FSR. The differential value will vary according to the pressure range selected and microswitch type. For actual values of differential please contact sales office.
2. When using 2SPDT switching arrangement, both microswitches may not actuate and/or deactuate at the same point. A small stage gap, normally upto +/- 5% FSR (depending on range code) may be observed. The On-Off differential (hysterisis) typically tends to be atleast double of those published for 1SPDT pressure switches.
If actuation and/or deactuation at same point is critical part of operation, then it can be achieved by using a separate DPDT relay. This relay will need a separate power supply for it’s coil.
75Bulletin No. KA220802
98
HOW TO ORDER INDUSTRIAL HYDRAULIC RANGE DP SWITCHES
HYDRAULIC RANGE MD/MT DP
99
Group 1
Non standard allocation
Group 2 Model
Group 3 Cable Entry Size
Group 4 Switch Type
Group 5
Range Code (values in bar)
Group 6
Microswitch Type
Group 7
Pressure Port Material / Size
Group 8 Diaphragm
Reserved for non-standard options not covered in catalogue. Will be given by manufacturer, only after agreement of supply details with customer.
MD = Industrial pressure switch with IP66 rated enclosure as per IS/IEC 60529
MT = Industrial pressure switch with IP66 rated enclosure as per IS/IEC 60529
1 = Al. enclosure ½” NPT threads *2 = Al. enclosure ¾” NPT threads 3 = Al. enclosure M20 X 1.5 threads 7 = SS enclosure, ½” NPT threads *8 = SS enclosure, ¾” NPT threads 9 = SS enclosure, M20 X 1.5 threads
*Not available for MT model For dual cable entry contact Sales Office
DF1 = pressure H1U =
difference switch, (0.1 – 1.0)
fixed differential without scale
DF2 = pressure difference switch, fixed differential with
H2U = (0.1 – 1.5) H3U = (0.2 – 2.6)
scale in bar
H4U =
DF3 = pressure (0.2 – 3.6)
difference switch, fixed differential with scale in psi
H7U = (0.5 – 7.0)
*DA1 = pressure D1T = difference switch, (0.5 – 10.0)
adjustable differential D2T =
without scale
(1.0 – 15.0)
*DA2 = pressure difference switch,
adjustable differential
D3T = (5.0 – 25.0)
with scale in bar D4T =
*DA3 = pressure (5.0 – 40.0)
difference switch, D1H =
adjustable differential (10 – 100)
with scale in psi
D2H =
*Available with A6, (7.0 – 200)
A7, A9 & B9
(in group 6) only
A1 = General purpose microswitch, rated at 15 A; 250 VAC
*A6 = Adjustable deadband
*A7 = 2SPDT switching elements
*A8 = General purpose microswitch
*A9 = General purpose microswitch
*B7 = 2SPDT Switching Elements
S1 =
0 =
SS316 / ¼” BSP(F) Neoprene
S2 = SS316 / ¼” NPT(F)
1 = PTFE
H1 = Hastelloy C / ¼” BSP(F)
2 = SS 316L
H2 = Hastelloy C / ¼” NPT(F)
N1 = Monel / ¼” BSP(F)
3 = Hastelloy C 4 = Monel
N2 = Monel / ¼” NPT(F)
*B9 = 2SPDT Switching Elements
for adjustable
differential
* For detailed specifications of microswitches, please refer note under Range Selection Table
More options available. Please contact sales office.
For additional wetted parts please contact sales office
eg. A high range pressure difference industrial switch, with ½” NPT cable entry in aluminium housing as 1SPDT pressure switch, fixed differential without scale, having 0.1 bar to 1 bar pressure range, with 15 Amp. microswitch, SS316 pressure housing with ¼” BSP port size & neoprene diaphragm shall be specified by
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 8
MD
1
DF1
H1U
A1
S1
0
Please specify full model number to avoid ambiguity.
Bulletin No. KA220802
