40

s

Protection Class:

IP 54

Mechanical pressure switches

Liquids and gases

This universal pressure switch can be used in

general mechanical engineering and the printing

machine industry, as well as in pneumatics and

hydraulics.

SIL 2 according IEC 61508-2

DCM/DNM

Pressure switches and pressure monitors for overpressure

DCM25

Switching

250 VAC 250 VDC 24 VDC

capacity

(ohm) (ind)

(ohm)

(ohm)

Normal

8 A

5 A

0.3 A

8 A

Type

Setting range

Switching

Max.

Materials in- Dimen-

differential

permissible contact with sioned

(mean values) pressure

medium

drawing

Switching differential not adjustable

page 25 + 26

DCM4016

1…16 mbar

2

mbar

1 bar

Perbunan

1 + 11

DCM4025

4…25 mbar

2

mbar

1 bar

+ 1.4301

DCM1000

10…100 mbar

12

mbar 10 bar

Perbunan + MS

1 + 10

DCM025

0.04…0.25 bar

0.03

bar

6 bar

Cu + Ms

DCM06

0.1…0,6 bar

0.04

bar

6 bar

Cu + Ms

1 + 14

DCM1

0.2…1,6 bar

0.04

bar

6 bar

Cu + Ms

DNM025

0.04…0.25 bar

0.03

bar

6 bar

1 + 15

DCM506

15…60 mbar

10

mbar 12 bar

1 + 12

DCM3

0.2…2.5 bar

0.1

bar

16 bar

Sensor

DCM6

0.5…6 bar

0.15

bar

16 bar

housing

DCM625

0.5…6 bar

0.25

bar

25 bar

1.4104

DCM10

1…10 bar

0,3

bar

25 bar

+

DCM16

3…16 bar

0.5

bar

25 bar

Pressure

DCM25

4…25 bar

1.0

bar

60 bar

bellow

DCM40

8…40 bar

1.3

bar

60 bar

1.4571

DCM63

16…63 bar

2.0

bar 130 bar

Switching differential adjustable

DCMV025 0.04…0.25 bar

0.03…0.4 bar

6 bar

DCMV06

0.1…0.6 bar

0.04…0.5 bar

6 bar

Cu + Ms

1 + 14

DCMV1

0.2…1.6 bar

0.07…0.55 bar

6 bar

DCMV3

0.2…2.5 bar

0.15…1.5 bar

16 bar

Sensor

DCMV6

0.5…6 bar

0.25…2.0 bar

16 bar

housing

DCMV625

0.5…6 bar

0.25…2.0 bar

25 bar

1.4104

DCMV10

1…10 bar

0.5…2.8 bar

25 bar

+

DCMV16

3…16 bar

0.7…3.5 bar

25 bar

Pressure

DCMV25

4…25 bar

1.3…6.0 bar

60 bar

bellow

DCMV40

8…40 bar

2.6…6.6 bar

60 bar

1.4571

1 + 16

DCMV63

16…63 bar

3.0…10 bar 130 bar

For smaller pressure ranges see also VCM, DGM, HCD and DPS sheets.

For additional functions refer page 30 – 32.

Calibration

The

DCM series is calibrated for falling pressure. This means that the adjustable switching pressure on

the scale corresponds to the switching point at falling pressure. The reset point is higher by the amount

of the switching differential. (See also page 27, 1. Calibration at lower switching point).

1 + 18

1 + 18

1 + 17

1 + 17

1 + 16

-DCM/DNM

see page 65

Technical data

Pressure connection

External thread G 1/2 (pressure gauge

connection) according to DIN 16 288 and inter-

nal thread G 1/4 according to ISO 228 Part 1.

Switching device

Robust housing (200) made of seawater-

resistant diecast aluminium GD Al Si 12.

Protection class

IP 54, in vertical position.

Pressure sensor materials

DNM025…DCM63 Metal bellows: 1.4571

Sensor housing: 1.4104

DCM025 – DCM 1 Metal bellows: Cu Sensor

housing: Cu + Ms

DCM4016/

Diaphragm: Perbunan

DCM4025

Sensor housing: 1.4301

DCM1000

Diaphragm: Perbunan

Sensor housing: Brass

Mounting position

Vertically upright and horizontal. DCM4016

and 4025 vertically upright.

Ambient temp. at switching device

–25…+70 °C, except: DCM4016,

4025, 1000: –15…+60 °C

Max. medium temperature

The maximum medium temperature at the

pressure sensor must not exceed the

permitted ambient temperature at the

switching device. Temperatures may reach

85°C for short periods). Higher medium

temperatures are possible provided the above

limit values for the switching device are

ensured by suitable measures (e.g. siphon).

Mounting

Directly on the pressure line (pressure

gaugeconnection) or on a flat surface with two

4 mm Ø screws.

Switching pressure

Adjustable from outside with screwdriver.

Switching differential

Not adjustable with DCM and types. Adjustable

from outside with DCMV types. For values see

Product Summary.

Contact arrangement

Single-pole changeover switch.