DCM40 View Datasheet(PDF) - Honeywell International

Part Name

Description

Manufacturer

DCM40

Pressure switches and pressure monitors for overpressure

Honeywell International 

M e c h a n i c a l p r e s s u r e s w i t c h e s

35

S2 type series

S2 type series (selection)

ZF217 pressure switches with two microswitches

and switching difference

Switching difference of two-stage pressure switches (ZF217, ZF307)

Type series

S2

ZF217

ZF307

min. switching

difference

Type

Factory

default

Higher pressure

Lower pressure

max. switching difference (mean values)

Switching scheme

A1/A3/B2/B4

C1/C3/D2/D4

+ ZF307

Switching scheme

A2/A4/C2/C4

Switching scheme

B1/B3/D1/D3

DCM06

DCM025

DCM1

DCM3

DCM6

DCM10

DCM16

DCM25

DCM40

DCM63

DNM025

VCM095

VCM101

VCM301

VNM111

40 mbar

20 mbar

40 mbar

0.1 bar

0.15 bar

0.25 bar

0.3 bar

0.6 bar

0.9 bar

1.3 bar

35 mbar

40 mbar

40 mbar

20 mbar

50 mbar

165 mbar

140 mbar

240 mbar

0.65 bar

0.95 bar

1.6 bar

2.0 bar

4.0 bar

6.0 bar

8.5 bar

215 mbar

300 mbar

260 mbar

100 mbar

310 mbar

190 mbar

160 mbar

280 mbar

0.75 bar

1.2 bar

1.85 bar

2.3 bar

4.6 bar

6.9 bar

9.8 bar

240 mbar

340 mbar

300 mbar

120 mbar

360 mbar

140 mbar

120 mbar

200 mbar

0.55 bar

0.8 bar

1.35 bar

1.7 bar

3.4 bar

5.1 bar

7.2 bar

180 mbar

260 mbar

220 mbar

80 mbar

260 mbar

Switching devices with adjustable switching difference

Additional function ZF217

On switching devices with additional function ZF217, the switching differene is continuously

adjustable via two adjustment knobs I and II accessible from outside. The maximum possible

switching difference is stated in the "Switching difference" table.

Turning adjustment knob I clockwise produces a lower switching point for microswitch I

Turning adjustment knob II anticlockwise produces a higher switching point for microswitch II

Adjustment knobs I and II have an internal stop to prevent the micro switches from being adjusted

beyond the effective range.

Adding together the adjustments on knobs I and II results in the switching difference between the two

micro switches. Changes made with the setting spindle do not affect the switching difference. The

switching difference remains constant over the whole setting range of the spindle. The two switching

points are moved up or down in parallel.

Recommended adjustment method for switching devices with ZF217

1. Set adjustment knobs I and II

to their basic positions.

Turn adjustment knob I

anticlockwise as far as possible.

Turn adjustment knob II

clockwise as far as possible.

2. Adjust the setting spindle S by the scale to a value midway between the desired upper and lower

switching points.

3. With pressure applied, set the lower switching point with adjustment knob I.

4. In the same way as in step 3, set the upper switching point with adjustment knob II.

5. If the desired upper and lower switching points cannot be reached, turn the setting spindle S in

the appropriate direction and repeat steps 3 and 4.

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