P251 Phenolic Case Process Pressure  Gauges

CASE DIAMETER

4.5”

ACCURACY CLASS PER EN 837-1/6

0.5 ,1.0 % ANSI B40.1 Grade 2A

DESIGN

Solid front to ANSI B40.1

SCALE RANGES

0…0.6 to 0...1600 bar

Or equivalent other units of pressure or vacuum

WORKING PRESSURE

Continuous service up to maximum rating

Intermittent service up to 1.3 times maximum rating for ranges up to 60 bar ,

up to 1.15 times for ranges over 100 bar

Fluctuating up to 90% of maximum rating only

OPERATING TEMPERATURE

Ambient : - 40 to 65° C

Process fluid : max 200°C

TEMPERATURE  ERROR

When temperature of the pressure element deviates from +20°C :  

rising temperature : + 0.4 % / 10°C of true scale value

falling temperature :- 0.4 % /10°C of true scale value

STANDARD FEATURES

PROCESS CONNECTION

Material : stainless steel AISI 316

Thread size : 1/2" BSP or NPT-M Lower

PRESSURE ELEMENT

Stainless steel AISI 316-L

-1 to 60bar : C-type

100 to 1600 bar : helical type

MEASURING  SYSTEM

Bourdon tube and socket are TIG-welded : one integral unit

MOVEMENT

Stainless steel AISI 304

DIAL

Aluminum with black markings on white background.    

Dial arc 270°

POINTER

Adjustable ,black aluminum pointer

CASE AND RING

Material : polypropylene black

Style : threaded ring

Protection class: IP65 – EN 60529/IEC 529

WINDOW

Plexi glass

GASKET

Neoprene rubber

OPTIONAL EXTRAS

Other process connection

Monel measuring system

Glycerin filled case(+15 to + 65°C)

Silicon oil filled case(- 45 to +100°C)

Other liquids such as compatible with food processes or for oxygen service (Galden = Per fluorinated poly ethers) are available up on request

Safety glass or plain glass window

Diaphragm seals(see data sheet DS) 

Oxygen service

Customer designed dial Safety glass window


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