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Air Differential Pressure Switch

Page 1 of 3

PA-930

Issue: 5.9

Date Of Issue: 28/10/2008

© 2008 Sontay Limited. All rights reserved.

Features

Specification Product

Codes

•

Close switching differential

•

Duct fixing kit included

•

IP65 enclosure kit option

Type

Adjustment range

PA-930-80

20 - 200Pa

PA-930-83

50 - 500Pa

PA-930-85

200 - 1000Pa

Max. operating pressure 50 mbar (5000Pa)
Pressure connections 6mm ID push-on tubing
Electrical rating

1.5A (0.4)/250Vac AgCdO contacts

Approvals

Switch according to VDE0630

UG1652
Connections

Via 0.25” Receptacles

Cable entry

M20 x 1.5

Housing material

Plastic moulding

Ambient range

-20°C to +85°C

Installation category

IEC 664 Category II

Pollution degree

IEC 664 Degree 1

Protection

IP54 (IP65 enclosure kit option)

Origin

Germany

PA-930-80

20-200PaAir differential pressure switch

PA-930-83

50-500PaAir differential pressure switch

PA-930-85

200-1000Pa Air differential pressure switch

PA-930-80-IP65

IP65 enclosure kit with fitted pressure switch 20-

200Pa
PA-930-83-IP65

IP65 enclosure kit with fitted pressure switch 50-

500Pa
PA-930-85-IP65

IP65 enclosure kit with fitted pressure switch 200-

1000Pa


Optional accessories

DFK

Additional duct fixing kit

PA-930-B

Right angled mounting bracket

PA-TEE

Tee piece pack of 10

PA-TUBE-8mm

PVC Tub, 8mm o/d, 30m reel

Note:
A duct fixing kit is supplied with the PA-930. It consists of
2m of 6mm dia. plastic tubing , 2 x pitot tubes, and 4 x
fixing screws.

Page 2 of 3

UK Sales Tel: [phone]

International Tel: [phone]

PA-930

Issue: 5.9

Date Of Issue: 28/10/2008

© 2008 Sontay Limited. All rights reserved.

Technical Overview

Application (continued)

The PA-930 range of air differential pressure switches are
suitable for low differential pressure switching applications,
and are ideal for providing indication of fan status or 'filter
dirty' conditions.

Application

If the switch is to be used for filter status monitoring, the
Pitot tube ends should be cut square. If the switch is to be
used for fan status monitoring, the ends of the Pitot tube
should be cut at an angle of 45°.


Duct

Pitot

tube

Fan status monitoring:

The switch can be used across a fan to provide proof of air
flow and hence fan status.

Filter status monitoring:

The switch can be used across a filter to provide dirty filter
status.

Installation

1. The PA-930 should only be installed by a competent,

suitably trained technician, experienced in installation
with hazardous voltages. (>50Vac & <1000Vac or
>75Vdc & 1500Vdc)

2. Ensure that all power is disconnected before carrying out

any work on the PA-930.

3. It is recommended that the unit be mounted vertically,

with the pressure ports pointing downwards.

NB The switch is normally mounted horizontally. If the
switch is mounted vertically, the trip pressure will be re-
duced by approx. 20Pa.

Fan

- +

Low port High port

High port Low port

Filter

+ -

P2 (low pressure)

P1 (high pressure)

Switching point adjustment

Factory set, do not adjust

1

3

2

Whilst every effort has been made to ensure the accuracy of this specification, Sontay cannot accept responsibility for damage, injury, loss or

expense resulting from errors or omissions. In the interest of technical improvement, this specification may be altered without notice.

Page 3 of 3

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PA-930

Issue: 5.9

Date Of Issue: 28/10/2008

© 2008 Sontay Limited. All rights reserved.

Connections

3 Common 1 N/C Contact 2 N/O Contact

CAUTION The PA-604 will be damaged if subjected to

excessive pressure. Do not test the unit by blowing into the

inlet ports.

Dimensions

1

2

3