MD PRO
Normally closed proportional solenoid valve
FEATURES
· 2-way normally closed
· Offers automated calibration
· Provides repeatability across its
operating range
· Offers a superior combination of value
and performance
· Rated for 10 million life cycles
MEDIA COMPATIBILITY
Air, argon, helium, hydrogen, methane, nitrogen,
oxygen & others
PHYSICAL PROPERTIES
Operating environment
Storage temperature
Length
Width
0 to 60 °C
-40 to 70 °C
45.3 mm (1.785 in)
16.5 mm (0.625 in)
17 mm (0.67 in)
1/8" barbs;
manifold mount with 43 µm screen
63 g (2.2 oz)
0.508 cm
3
(0.031 in
3
)
43 µm
None required
Available on special request
ELECTRICAL
Power
Voltage
max. 2 W
max. 5.5, 8, 11.5, 13.5, 20 or 29 V
DC
Height
Porting
Weight
Internal volume
Filtration (recommended)
Lubrication
Oxygen clean
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MD PRO
Normally closed proportional solenoid valve
PERFORMANCE CHARACTERISTICS
Part no.
MDPRO4...
MDPRO5...
MDPRO6...
Pressure
0...75 psid
0...100 psid
0...50 psid
Vacuum
Orifice siz es
0.040" (1.02 mm)
Leak rate
1
≤
0.22 sccm
of ai r
(bubble tight)
R esp o n se
0...27 "Hg
(0...13 psi)
0.050" (1.27 mm)
0.065" (1.65 mm)
<30 msec
cycling
FLOW CURVE
2
Notes:
1
sccm denotes Standard Cubic Centimeters per Minute. It is a unit for the flow rate at standard conditions of temperature and
pressure. 1000 sccm = 1 slpm.
2
slpm denotes Standard Liters per Minute. It is a unit for the flow rate at standard conditions of temperature and pressure.
1 slpm = 1000 sccm.
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MD PRO
Normally closed proportional solenoid valve
OUTLINE DRAWING
Basic valve dimensions
Port and mounting hole diagrams
dimensions in inches (mm)
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MD PRO
Normally closed proportional solenoid valve
ELECTRICAL INTERFACE OPTIONS
MDPRO...F...
(Wire leads,
no terminals)
MDPRO...P...
(PC mount, 4 pins)
PNEUMATIC INTERFACE OPTIONS
MDPRO...1...
(No barbs, face seal
to manifold with screeen)
MDPRO...8...
(0.125" barbs,
1/8" I.D. tubing, 1/4" O.D. max)
ORDERING INFORMATION
Model no.
Series
Options
MDPRO
4:
5:
6:
Max.
pressure
Orifice
size
(1.016 mm)
Coil selection
Elastomer
V:
FKM
A:
B:
C:
D:
E:
F:
Max.
Resis-
Current***
voltage* tance**
5.5 V
DC
8 V
DC
11.5 V
DC
13.5 V
DC
11
Ω
23
Ω
47
Ω
68
Ω
0.304 A
0.212 A
0.152 A
0.125 A
0.091 A
0.066 A
Electrical
interface
F:
wire leads,
18"
Pneumatic
interface
1:
manifold
mount with
screens*
8:
1/8" barbs
Cleaning
S:
standard
cleaning
75 psid 0.040"
100 psid 0.050"
(1.270 mm)
50 psid 0.065"
(1.651 mm)
P:
PC board
mount
O:
oxygen
service*
20 V
D C
136
Ω
29 V
D C
274
Ω
* max. voltage for continuous full
flow, ambient temp. 55°C
** coil resistance for room temp.
*** input current for full flow
* 43 µm screen
(port 2)
* this option will
affect price;
contact
Sensortechnics
for details
Example: MDPRO
4
V
A
F
8
S
Note: Not all combinations might be available.
Please contact your nearest Sensortechnics sales representative for further information.
Sensortechnics reserves the right to make changes to any products herein. Sensortechnics does not assume any liability arising out of the
application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others.
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