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 5. Operating Principle

As shown in diagram below, the bourdon tube

transmits the position change according to

pressure change through a lever to open or

close the micro switch. 

 6. Transport, storage, and opening

1) Attention in case of transportation

Please pay sufficient attention to transportation because damage can be caused 
in terms of performance, in case of being impacted by a fall. 

2) Attention in case of storage

Please store it at the place with little humidity and the place where there is no
vibration and dust.  
In case of multi-level stacking, the weight should be to a degree where packing
box isn't deformed. And always store the product so that it cannot fall. 

3) Attention in case of opening a package

Please carefully handle the object in case of opening a package. 
Please take out the product at the sufficiently wide place in order not to drop the
object by mistake in taking out it. 

NO

1

2

3

NAME

SETTING POINT

CONNECTOR

CABLE GLAND

NAME

CASE

NO

NAME

COVER

NAME PLATE

NO

4

5

6

Summary of Contents for P941

Page 1: ...INSTRUCTION MANUAL MODEL P941 P942 ITEM PRESSURE SWITCH ...

Page 2: ...se a cable gland of the same class or upper class 8 Please construct wiring in accordance with consumers electrical installation guide and electrical facilities technical standards 9 Make sure to turn off the valve to prevent the measuring fluid leak when dismounting the gauge 10 Use a pressure gauge with no oil in an environment with hydrocarbon or oxygen Oil contained in the gauge may react with...

Page 3: ...RES 3 SPECIFICATION AND STANDARDS 4 STRUCTURE AND FUNCTION 5 OPERATING PRINCIPLE 6 TRANSPORTATION STORAGE AND OPENING 7 CONTACT POINT WORKING TYPE AND CONNECTION 8 INSTALLATION 9 WIRING 10 MAINTENANCE AND OPERATION CONTENTS ...

Page 4: ...oduct 2 Features This product can be used for turning on an abnormality alarm or warning light or process control according to ON OFF signal in case of reaching the set pressure And it cannot be used in explosion proof area 3 Specification and standards 1 Nominal diameter PN941 Single set point 129 2 W X 146 H X 62 5 T PN942 Dual set point 129 2 W X 146 H X 92 T 2 Repeatability 0 5 of Adjustable R...

Page 5: ...ion P941 P942 Dead Band within of F S 0 1 0 0 1 0 1 0 0 1 15 0 1 0 2 0 0 2 10 0 1 0 3 0 0 3 0 1 0 4 0 0 4 8 0 1 0 6 0 0 6 0 1 1 0 1 6 0 1 1 5 0 1 5 0 1 2 0 2 0 2 5 0 3 5 0 5 0 7 0 35 0 10 0 15 Pressure Gauge Mpa Compound Gauge Mpa Vacuum Gauge Mpa 15 0 02 0 1 0 25 ...

Page 6: ...tion in case of storage Please store it at the place with little humidity and the place where there is no vibration and dust In case of multi level stacking the weight should be to a degree where packing box isn t deformed And always store the product so that it cannot fall 3 Attention in case of opening a package Please carefully handle the object in case of opening a package Please take out the ...

Page 7: ...ture than specified in this manual 3 Be prepared for lightning or vapor 4 Avoid direct sunlight 5 Use M5 bolts when fixing the product to the panel or wall through fixing holes When you use fittings fix them firmly 6 Use a flexible tube for the impulse line to prevent excessive force on the pressure gauge 7 For pipe connection do not grab and turn the product case rather use a designated spanner ...

Page 8: ...dication instrument makes a big error remove it from the product for inspection It may have been caused by wear corrosion external shock vibration or shock of a part In this case you must remove adjust or exchange the part 8 Standard rated current is based on 3 6 However it may be different in case of having a MICRO S W built in Therefore please use it with a tolerance in consideration of inrush c...

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