SICK Differtential pressure monitor Product information

Brand: SICK

Model: Differtential pressure monitor

Type: Product information

DATA SHEET

Differential Pressure Monitor

Monitoring of the Purge Air Supply with

In-situ Measuring Systems

Application

The differential pressure monitor is

used for monitoring the purge-air sup-

ply with SICK in-situ measuring sy-

stems. A purge-air blower supplies the

purging-air attachments of the measu-

ring system. The air ow protects the

optical surfaces from, e.g. contamina-

tion or aggressive gases of the waste

gas channel. If the purge-air supply is

not sufcient the differential pressu-

re monitor issues a warning signal via

potentially free contacts.

To ensure safe monitoring of the pur-

ge-air supply the differential pressure

monitor should be installed to the in-

lets of the purge-air attachments.

The differential pressure monitor used in a SICK measuring system e.g. DUSTHUNTER

Flange connection

Purge-air attachment

of the measuring system

Purge-air inlet

Differential

pressure monitor

Purge-air hose

Measuring nozzle

Pressure connection:

higher pressure at P1 (+)

lower pressure at P2 (–)

COM 3

2 NO

1 NC

30 40 50 60 70 80 90

∆ P = f (V)

Dimensional drawing

Installation

Attach the hose end of the pressure

monitor with help of the hose band

clip. Attach the purge-air hose with

help of the hose band clip to the inlet

of the pressure monitor.

Setting range

The switching threshold of the

pressure monitor can be set at 5 to

20 hPa for min. purge-air supply (cor-

responding to appr. 20 to 60 m

/h;

5.3 to 15.9 gal/h).

Function, settings

During standard operation of the mea-

suring system the purge-air supply is

continuous active. The switching

threshold for minimum purge-air

quantity on the differential pressure

monitor is congurable. If the purge-

air quantity decreases the value

of this switching threshold, the diffe-

rential pressure monitor switches the

potentially free contact in order to si-

gnal missing purge-air.

Electrical connection

Diagram

Volume ow V [m

/h]

Diff. pressure ΔP [hPa]

Ø 50

Ø 46

Ø 40

P1 (+)

P2 (-)

103

(128)

180

Dimensions in mm

Technical Data

Pressure connection P1 screw neck M10 x 1

P2 connection adapter ø 6.5 mm (0.3 in)

Mounting position Any, but as near as possible to the purge-air inlet of the

measuring system

Pressure setting range 5 ... 25 hPa (0.07 ... 0.3 psi); tolerance ±15 %

Switching difference 1 hPa (0.02 psi)

Max. operating pressure 100 hPa (1.5 psi)

Temperature range –20 ... +85 °C (–4 ... 185 °F)

Electrical contact rating 250 V AC; 6 A

Electrical connection AMP flat plug 6.3 x 0.8 mm

(DIN 46244)

Hose connection ø 40 mm (1.6 in)

Protection class IP 54

Connection Wiring

Throw over switch

Increasing pressure NC opens, NO closes

Decreasing pressure NO opens, NC closes

8007948/2009-03 ∙ 3M ∙ Subject to change without notice

SICK AG | Waldkirch | Germany | www.sick.com

SICK Differtential pressure monitor Product information

SICK Differtential pressure monitor Product information

SICK Differtential pressure monitor Product information

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