(according to Gas Appliance Directive 90/396/EEC)
P r e s s u r e s w i t c h e s |
39 |
Mechanical pressure switches |
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H C D s e r i e s
P r e s s u r e a n d d i f f e r e n t i a l p r e s s u r e s w i t c h e s f o r n e u t r a l g a s e s ( D V G W - t e s t e d )
Pressure switches of the HCD series are suitable |
connection piece G 1/8” (remove sealing cham- |
for neutral and non-aggressive gases. They can |
ber). For differential pressure detection the high |
be used for monitoring overpressure and differ- |
pressure is applied to the lower connection |
ential pressure. For overpressure detection the |
piece (G 1/4”) and the low pressure side to the |
pressure side is connected to the lower connec- |
upper connection piece (G 1/8”). A pressure |
tion piece G 1/4”; for vacuum detection the |
measurement connector (9 mm ø) is available for |
pressure side is connected to the upper |
accurate setpoint adjustment. |
Technical data
Pressure connection
Pressure connection for overpressure: G 1/4” internal thread.
For vacuum and differential pressure: G 1/8” internal thread.
Switch housing
Diecast aluminium.
Medium temperature
–15 to +60 °C.
Maximum working pressure
See Product Summary
Mounting position
Horizontal with connection pieces pointing downwards.
Type of protection IP 40 according to DIN 40050.
Mounting
Either directly on pipe or with mounting bracket (supplied) on a vertical surface.
Setting the switching point
Remove the cover and turn the setting spindle marked +/– in the corresponding direction. The scale shows only guideline values. For accurate setpoint adjustment it is necessary to use a pressure gauge which can be attached to the measuring point (9 mm ø pressure measurement connector).
Switching function Single pole switching.
Electrical connection
Switching capacity
2 A/220–240 VAC (inductive load)
10 A/220–240 V AC (resistive load)
Cable entry Pg 13.5
Tested according to Gas Appliance Directive 90/396/EEC, DVGW reg. no. E 3085/2.
Type |
Setting range |
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Switching differential |
Max. |
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in lower range |
in upper range |
working |
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pressure |
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HCD 6003 |
0.2…3 mbar |
0.3… |
mbar |
0.5 mbar |
100 |
mbar |
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HCD 6010 |
1…10 |
mbar |
0.3… |
mbar |
1 |
mbar |
100 |
mbar |
HCD 6050 |
5…50 |
mbar |
1.5… |
mbar |
3 |
mbar |
200 |
mbar |
HCD 6150 |
15…150 |
mbar |
4… |
mbar |
10 |
mbar |
300 |
mbar |
The switching differential is not adjustable. The low switching differentials are for the lower setting range; the higher values relate to the upper ranges.
Dimensioned drawing
s |
GASTEC |
IP 40 |
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Degree of protection: |
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tested |
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