D502/7D. D502/7DK
Pressure Switches
The pressure switches use bellows-type sensors.
Shanghai ZhongHe Automation Instrumentation co., LTD.
They can be used for neutral gases (such as air. Gas. water steam. etc) and liquid medium (such water. refrigerants. oil. etc) The set point of the pressure switch is adjustable. The adjustable range of set point is -0.1—4MPa.
□ Main Technical Data
Working Viscosity:<1×10-3m2/s.
switching Element: micro-switch.
Housing Protection Grade: IP65 (Accord with DIN40050 and corresponding to IP65 in GB4208)
Ambient Temperature: -40 ~ +50℃.
Medium Temperature: 0 ~ +120℃.
Vibration Resistance: D502/7D:40m/s2; D502/7DK:20m/s2.
Repeatability error: ≤1%.
Contactor Capacity: AC 220V 6A (reaistance)
(as for special requirements, you may refer to the Application Manual written by this factory)
□ Features
Suitable for vacuum
Action procedure of the single-pole double throw micro-switch:
The connecting terminals 1-3 will be connected when the pressure rises to the upper limit of the switching value; and the connecting terminals 1-2 will be disconnected when the pressure rises to the upper limit of the switching value.
□ Specifications (D502/7D)
·Switching Difference is Non-adjustable:
Adjustable Range of Set point
MPa
Switching Difference
(Not Ureatar Than)
Max. Allow-able Press-ure*
MPa
Number of Switch-ing Cycles
1/min
Pressure Sensor Materials
Processs-ing Connecti-on (External Thread)
Weight
Kg
Outline Dimen-sions (Drawing Number)
Order Number
Lower Limit of Set Point range
MPa
Upper Limit of Set Point range
MPa
Housing
Bellows
-0.1~0
-0.1~0.1
-0.1~0.16
-0.1~0.25
0.006
0.007
0.008
0.009
0.007
0.008
0.009
0.012
1
1
1
1
20
Brass
Stainese steel
00Gr17
Ni14
Mo2
(316L)
G1/4
G1/4
G1/4
G1/4
1.0
1.0
1.0
1.0
01
01
01
01
0810100
0810200
0810300
0810400
0~0.1
0~0.16
0~0.25
0.007
0.008
0.009
0.008
0.009
0.01
1
1
1
G1/4
G1/4
G1/4
1.0
1.0
1.0
01
01
01
0811100
0811200
0811300
0.02~0.4
0.03~0.6
0.03~1
0.03
0.03
0.03
0.03
0.035
0.04
2
2
2
G1/4
G1/4
G1/4
0.85
0.85
0.85
02
02
02
0811400
0811500
0811600
0.05~1.6
0.05~4
0.07
0.07
0.08
0.09
5
5
G1/4
G1/4
0.9
0.9
03
03
0811700
0811800
·Switching Difference is adjustable: (D502/7D)
Adjustable Range of Set point
MPa
Switching Difference
(Not Ureatar Than)
Max. Allow-able Press-ure*
MPa
Number of Switch-ing Cycles
1/min
Pressure Sensor Materials
Processs-ing Connecti-on (External Thread)
Weight
Kg
Outline Dimen-sions (Drawing Number)
Order Number
Lower Limit of Set Point range
MPa
Upper Limit of Set Point range
MPa
Housing
Bellows
-0.1~0
-0.1~0.1
-0.1~0.16
-0.1~0.25
0.018~0.08
0.019~0.1
0.02~0.2
0.022~0.25
0.019~0.08
0.021~0.1
0.022~0.2
0.024~0.25
1
1
1
1
20
Brass
Stainese steel
00Gr17
Ni14
Mo2
(316L)
G1/4
G1/4
G1/4
G1/4
1.05
1.05
1.05
1.05
01
01
01
01
0800100
0800200
0800300
0800400
0~0.1
0~0.16
0~0.25
0.015~0.08
0.018~0.1
0.02~0.2
0.016~0.08
0.02~0.1
0.024~0.2
1
1
1
G1/4
G1/4
G1/4
1.05
1.05
1.05
01
01
01
0801100
0801200
0801300
0.02~0.4
0.03~0.6
0.03~1
0.08~0.25
0.08~0.5
0.09~0.8
0.08~0.25
0.09~0.5
0.1~0.8
2
2
2
G1/4
G1/4
G1/4
0.9
0.9
0.9
02
02
02
0801400
0801500
0801600
0.05~1.6
0.05~4
0.17~1.2
0.18~2
0.19~1.2
0.2~2
5
5
G1/4
G1/4
0.95
0.95
03
03
0801700
0801800
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