PRINTED IN CANADA

Copyright © Greystone Energy Systems Inc. All Rights Reserved

www.greystoneenergy.com

PS-GFSXXX-03

Greystone Energy Systems, Inc.

150 English Drive, Moncton,

New Brunswick, Canada E1E 4G7

Ph: +1 (506) 853-3057 Fax: +1 (506) 853-6014

North America: 1-800-561-5611

E-mail: mail@greystoneenergy.com

DIFFERENTIAL PRESSURE SWITCH

GFS SERIES

PRODUCT

GFS-

Adjustable Differential Pressure Switch with Setpoint Indication

RANGE

80

83

86

20 to 300 Pa) ( 0.08” to 1.20 “WC), Switch differential 10 Pa (0.04 “WC)

50 to 500 Pa (0.2” to 2.00 “WC), Switch differential 20 Pa (0.08 “WC)

500 to 2500 Pa (2.00” to 10.00 “WC), Switch differenital 150 Pa (0.60 “WC)

ADDITIONAL DESCRIPTION

U-NPIKG

C-NPIKN

ETL & CE, 1/2” NPT & duct install kit, Greystone branded

CE only, 1/2” NPT & duct install kit, Non-branded

ORDERING

GFS-

PART NUMBER

NOTE: Greystone Energy Systems, Inc. reserves the right to make design modifications without prior notice.

PRODUCT DESCRIPTION

The differential pressure switch housing unit

contains a diaphragm, a snap-acting SPDT switch,

and a range adjustment knob with increments. The

sample connections located on the side accept

6.35mm (0.25”) OD tubing. There are 3 pressure

ranges available. 2 pick up tubes and 2m (6.56’) of

PVC tubing are included. The enclosure cover guards

against accidental contact with the live switch

terminal screws and the setpoint adjustment knob

with indication.

ALARM OR CONTROL

To prove excessive airflow or pressure

To prove insufficient airflow or pressure

ADJUSTMENT RANGE

See product ordering information

ADJUSTMENT KNOB MARKINGS

Scaled in Pascal and “WC

SWITCH TOLERANCE

±15%

SWITCH REPEATABILITY

80: +/-5%, min +/- 5 Pa

83: +/-2.5%, min +/- 5 Pa

86: +/-1%

MAXIMUM OPERATING PRESSURE

1.45 PSI (10 kPa) for all pressure ranges

MEDIUM

Air, non-combustible, and non-aggressive gases

TEMPERATURE RANGE

Medium and Ambient Temperature: -20 to 60°C (-4 to 140°F)

Storage Temperature: -40 to 85°C (-40 to 185°F)

OPERATING HUMIDITY RANGE

0-95%, Non-Condensing

DIAPHRAGM MATERIAL

Silicone, tempered at 200°C, free of gas emissions

PRESSURE CONNECTIONS

2 plastic pipe connection pieces

(P1 and P2), external diameter 6.0mm

P1 for connection to higher pressure

P2 for connection to lower pressure

ELECTRICAL RATING

Max. 1.0A (0.4A) / 250 Vac, 50/60 Hz

Max. 0.1A / 24 Vdc

ELECTRICAL CONNECTIONS

AMP flat plug 6.3mm x 0.8mm

Push-on screw terminals

Cable conduit with cable relief

MECHANICAL WORKING LIFE

Over 10 million switching operations

HOUSING MATERIALS

Switch body made of PA 6.6, cover made of PC

PROTECTION CATEGORY

IP54 with cover (NEMA 13)

WEIGHT

With cover 160g

INCLUDED ACCESSORIES

2 meters of PVC hose and 2 plastic tubes

Set of 3 push-on screw terminals

APPROVALS

CE

ETL Approves, No. 3192203

UL508 & CSA 22.2

SPECIFICATIONS

57.5 mm (2.26”)

21.8 mm

(0.86”)

7.5 mm (0.30”)

18 mm (0.71”)

59 mm

(2.32”)

ø

65 mm (2.56”)

50 mm (1.97”)

6 mm (0.24”)

8.5 mm (0.33”)

ø 4.5 mm (0.18”)

IP54