6761 & 6763 ~ Low Air Pressure Vacuum

Switches (slow make contacts)

1999

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ISSUE 01

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Benefits

mounting onto printed circuit boards

applications, back entry versions only

Printed Circuit Board Mounting Switches

Model No

6761 (Vacuum)

6763 (Pressure)

Pressure/Vacuum range

Minimum

150mm (6 ins) Wg

150mm (6 ins) Wg

Maximum

670 millibar (9.8) PSI

1.0 Bar (14.7) PSI

Maximum Differential

Approximately 0.06 ins WG

Approximately 0.06 ins WG

Pressure/Vacuum Range

Adjustable variants

Adjustable variants

Body Withstand Pressure

2.7 Bar (40) PSI

2.7 Bar (40) PSI

Air Bleed Version

Available upon request

Available upon request

Flow Rate Litre / Min (with air bleed)

8 - 30cc/Min @ 31 ins WG

8 - 30cc/Min @ 31 ins WG

Pressure Connection

4mm Ø spout for side and back entry

4mm Ø spout for side and back entry

2mm Ø spout for back entry only

2mm Ø spout for back entry only

Lower spout ‘V’ vacuum

Upper spout ‘P’ pressure

Connecting Tube Reference

4mm spout = 2311-01 or 2311-08

4mm spout = 2311-01 or 2311-08

2mm spout = 2311-03

2mm spout = 2311-03

Temperature Range

-10˚C to 85˚C (Flow Solder 220˚C for 5 Sec)

-10˚C to 85˚C (Flow Solder 220˚C for 5 Sec)

Electrical Data

Switch

Single Pole Normally Open

Single Pole Normally Open

Contact Rating Maximum

0.5A RES 250V ac (Silver contacts)

0.5A RES 250V ac (Silver Contacts)

UL

50mA RES 250V ac

50mA RES 250V ac

(Maximum ratings may not be achieved at low pressure settings)

Dry Switching Maximum Recommended Current

10mA 24V dc (UL)

10mA 24V dc (UL)

Body

Glass filled polyester

Glass filled polyester

Diaphragm

Silicone as standard

Silicone as standard

Contacts

Silver or gold plated copper pins

Silver or gold plated copper pins

Mechanical Life

Weight (grams)

8grms

8grms

6761/6763 Vacuum and Pressure Switch Range

A miniature, compact low pressure switch designed for direct fitting

by solder pins to printed circuit boards. Both vacuum and pressure

ports are provided making the unit ideal for differential switching.

Typical applications are indicators, emergency cut-out and alarms,

filter and low pressure/vacuum monitoring. The switch is made to

order for specific applications, the actual operating pressures or

vacuum being set during production. However, final adjustment may

be made after installation by the slotted screw in the base. The body

construction allows the two ports to be set at any angle to each other.

Non Std

shown as 270˚