Omega 1626-1, 1626-5, 1626-10, 1626-20, 1627-1 User guide

1-5/16 [33.34]

SERIES 1620

SINGLE AND DUAL PRESSURE SWITCH

High Reliability, Repetitive Accuracy within ±1%

On the Series 1620 Single and Dual Pressure Switch our old faithful switch design
is still best where highest precision combined with diaphragm sealed leak proof
construction and mounting simplicity are required. Model 1626 and 1627 differential
pressure switches are identical in design and construction except that Model 1626
has a single electric switch and Model 1627 has dual electric switches. Model 1627
can therefore provide dual control when required. It can be set to open or close two
independent electrical circuits, each preset for its own actuation pressure. Both units
have diaphragm sealed motion take outs providing maximum protection against
leakage.

BENEFITS/FEATURES

• Single or dual action switches support consistent designs with similar models, but

 withtheabilitytomatchspecicapplicationneeds

• Sealed diaphragm provides leak-proof construction for high accuracy and precision
control

APPLICATIONS

• Damper positioning • Duct air control

MODEL CHART

Model
1626-1

1626-5
1626-10
1626-20
1627-1
1627-5
1627-10
1627-20

Operating
Range in w.c.

.15 to 1.5
.5 to 6.0

2.0 to 11

8.0 to 24
.15 to 1.5
.5 to 6.0

2.0 to 11

8.0 to 24

Approximate Deadband

.10
.15
.25
.50
.10
.15
.25
.50

.20
.35
.65

1.20
.20
.35
.65

1.20

Adj. Diff. Between
Set PointsMin. Set Point Max. Set Point

-

-

-

-

0.5

1.2

2.3

5.0

Ø9/32 [7.14] MOUNTING

HOLE TYP 2 PLACES

1/2 CONDUIT

CONNECTION

3/4 [19.05]

3-1/16
[77.79]

4-11/16
[119.06]

SPECIFICATIONS
Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.
Temperature Limits: -30 to 130°F (-34.4 to 54.4°C).
Pressure Limits: Max. 50 in w.c. (12.44 kPa) continuous, 2 psig (13.79 kPa surge.
Switch Type: 1626 SPDT; 1627, (2) SPDT.
Repeatability: ±1%.
Electrical Rating: 15 A @ 120-480 VAC, 60 Hz. Resistive, 1/8 HP @ 125 VAC,1/4

HP @ 250 VAC, 60 Hz.
Electrical Connections: 3 screw type, common, normally open and normally
closed.

Process Connections: 1/8˝femaleNPT.
Mounting Orientation: Diaphragm in vertical position. Consult factory for other

position orientations.

Set Point Adjustment: Screw adjustment.
Weight: Model 1626, 3 Ib, 9.8 oz (1.64 kg); Model 1627, 3 Ib, 11.8 oz (1.69 kg).
Compliance: CE.

OPTIONS
To order add sufx: Description

-MIL MIL environmental construction

ACCESSORIES
Model Description
A-302F-A

A-489

303SSstaticpressuretipwithmountingange;for3/16˝IDrubberor
plastictubing;4˝insertiondepth;includesmountingscrews
4˝straightstaticpressuretipwithange

5-7/8

[149.23]

3

[76.20]

1-1/2

[38.10]

R 4-5/16 [109.54]

TYP 2 PLACES

1/8 FEMALE NPT

LOW PRESSURE

CONNECTION

22.5°

8-7/8

[225.43]

8-1/4 [209.55]

7-3/4 [196.85]

45° TYP

1/8 FEMALE NPT
HIGH PRESSURE CONNECTION

PRESSURE