6742-30 HERGA, 6742-30 Datasheet - Page 15

• Manufacturer Part Number: 6742-30
• Description: PRESSURE SWITCH
• Manufacturer: HERGA

Specifications of 6742-30

• Connection Size: 0.125"
• Contact Configuration: DPCO
• Contact Current Ac Max: 21A
• Contact Voltage Ac Max: 250V
• External Depth: 43mm
• External Diameter: 43mm
• External Length / Height: 58mm
• External Width: 40mm

6721 / 6722 ~ Vacuum Switches
Suitability for use with different operating media
Key:
1999
As a consequence of our policy of continual improvement, we reserve the right to change without notice any detail in this publication. Please see our Conditions of Sale.
Acetone
Ammonia (Liquid)
Amyl Alcohol to 20˚C
Automotive Brake Fluid
Beer
Benzyl Alcohol
Butane
Carbon Dioxide - Dry
Citric Acid
Copper Sulphate (Sol.)
Compressed Air
Cutting Oil
Diesel Oil
Detergent Solution
Fuel Oil
Glycol
Hydraulic Oil
Hydrogen
Lubricating Oil
Milk
Mineral Oil
Natural Gas
Nitric Acid (Dil.)
Oxygen to 70˚C
Petrol
Plating Solution (Chrome)
Salt Water
Sewage
Sulphur Dioxide
Turpentine
Vinegar
Water
Vacuum Medium
Chemical Compatibility
= Recommended
= Suitable with modification
= Not suitable
FOR FURTHER INFORMATION TEL: [phone] FAX: [phone]
Diaphragms
6721
Back entry
Alternative Vacuum Connections
1
/
8
”
BSPT and NPT Connectors
WG -225 -200 -175 -150 -125 -100 -75
WG
mm
In
Hg
mm
In
Hg
-400 -350
-30
6721-40
-50
-25
Note: Differentials are approximate
6721-20
-300 -250
-40
REDUCING VACUUM
REDUCING VACUUM
-20
Chart 1
Chart 2
-30
6721-06
6721-30
-15
-200 -150 -100
6721-03
-20
-10
-80
-10
-5
-25 -10
-50
0
0
-25
-50
-75
-100
-125
-150
-175
-200
-225
-250
-275
WG
0
5
10
15
20
25
30
In
WG
In
-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
0
-10
-20
-30
-40
-50
mm
Hg
mm
Hg
ISSUE 01