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ManualsBrandsCleveland Controls ManualsAir Pressure SwitchesSPDT Switch w/ Barb Connection (.05" - 2.0" W/C)

Cleveland Controls

DIVISION OF UNICONTROL INC.

1111 Brookpark Rd

Cleveland OH 44109

Tel:

216-398-0330

Fax: 216-398-8558

Email:saleshvac@unicontrolinc.com

Web page: http://www.clevelandcontrols.com

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Cleveland Controls

Division of UniControl Inc.

BulletinRSS495/498.01

APPLICATION

Series RSS-495/498 switches feature

customer-speciﬁed ﬁxed set points be-

tween 0.12"w.c. and 4.00"w.c.

They can be used to sense positive,

negative or differential air pressure,

and are available with various sample

line connections, terminal styles, and

mounting arrangements.

GENERAL DESCRIPTION &

OPERATION

The thermoplastic housing contains a

sensing diaphragm and includes the ex-

ternally-mounted snap-acting switch.

Sample line connectors are located

on either or both sides of the diaphragm

to accept air sample connections.

The electrical connection consists

of male quick-connect terminals.

The snap action switch can be

actuated by a pressure or vacuum air

ﬂow, or by a pressure or vacuum dif

ferential.

MOUNTING (FIGURE 1)

Select a mounting location free from

vibration. Mount with the diaphragm in

any vertical plane in order to maintain

the speciﬁed operating set point. Avoid

mounting with the sample line connec-

tions directed upward.

Standard surface mount arrange

ment is via the two 0.14" slots in the

bracket. Various other mounting con-

ﬁgurations are available (see Figure

4).

AIR SAMPLING CONNECTION

(FIGURE 2)

Series RSS-495/498 switches are

available with many different types of

sample line connections that accept a

wide range of ﬂexible and rigid sample

line connections (see Figure 5).

Refer to Figure 2 to identify the

High inlet (H) and the Low inlet (L).

Connect the sample lines as follows:

Series

RSS-495/498

OEM AIR PRESSURE SENSING SWITCHES WITH FIXED SET POINT

Positive Pressure Only: Connect

the sample line to H; L remains open to

the atmosphere.

Negative Pressure Only: Connect

the sample line to L; H remains open to

the atmosphere.

Two Negative Samples: Connect

higher negative sample to L; lower

sample to H.

Two Positive Samples: Connect

higher positive sample to H; lower

sample to L.

One Positive and One Negative:

Connect positive sample to H; connect

negative sample to L.

Summary of content (2 pages)

PAGE 1
Cleveland Controls Division of UniControl Inc. Series RSS-495/498 OEM AIR PRESSURE SENSING SWITCHES WITH FIXED SET POINT APPLICATION Series RSS-495/498 switches feature customer-speciﬁed ﬁxed set points between 0.12"w.c. and 4.00"w.c. They can be used to sense positive, negative or differential air pressure, and are available with various sample line connections, terminal styles, and mounting arrangements.
PAGE 2
Fig. 1: Mount with the diaphragm in any vertical plane. Sample line connections should not point up. Fig. 3: Without pressure applied to the diaphragm, switch contacts are in the position shown. Figure 4 Figure 5 Bulletin RSS495/498.01 Fig. 2 SPECIFICATIONS SERIES RSS-495/498 AIR PRESSURE SENSING SWITCHES Mounting Position: Mount with the diaphragm in any vertical plane to obtain speciﬁed operating set point. Set Point Range: Factory calibrated to meet customer design speciﬁcation, from 0.12 + 0.05"w.