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
GASTEC
tested
Degree of protection:
IP 40
s
Pressure switches of the HCD series are suitable
for neutral and non-aggressive gases. They can
be used for monitoring overpressure and differential pressure. For overpressure detection the
pressure side is connected to the lower connection piece G 1/4”; for vacuum detection the
pressure side is connected to the upper
connection piece G 1/8” (remove sealing chamber). For differential pressure detection the high
pressure is applied to the lower connection
piece (G 1/4”) and the low pressure side to the
upper connection piece (G 1/8”). A pressure
measurement connector (9 mm ø) is available for
accurate setpoint adjustment.
HCD series
Pressure and differential pressure switches for neutral gases
(DVGW-tested)
HCD
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.
Pressure switches
Mechanical pressure switches
Type Setting range Switching differential Max.
in lower range in upper range working
pressure
HCD 6003 0.2…3 mbar 0.3… mbar 0.5 mbar 100 mbar
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
(according to Gas Appliance
Directive 90/396/EEC)
39