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Pressure Gauge AT 4259

Pressure gauge R3/8 x 100 mm. Class 1,0. For industrial applications use 4259R, acid proof media wetted material that withstands +200°C. Also in dampened performance.

Dimension rangeDN 10
PNFull scale value for temporary load
Temperature range-40ºC to +80ºC
MaterialSteel

Variations

Article number Measuring range (bar) Performance Material wetted DN Temperature (°C) Amount
AT 4259-10-1 RSK 5113383 0-1 Visual display Brass 10 -40-80
AT 4259-10-2,5 RSK 5113384 0-2,5 Visual display Brass 10 -40-80
AT 4259-10-4 RSK 5113385 0-4 Visual display Brass 10 -40-80
AT 4259-10-6 RSK 5113386 0-6 Visual display Brass 10 -40-80
AT 4259-10-10 RSK 5113387 0-10 Visual display Brass 10 -40-80
AT 4259-10-16 RSK 5113388 0-16 Visual display Brass 10 -40-80
AT 4259-10-25 RSK 5113389 0-25 Visual display Brass 10 -40-80
AT 4259-10-40 RSK 5113390 0-40 Visual display Brass 10 -40-80
AT 4259R10-1 0-1 Visual display Stainless steel 10 -40-200
AT 4259R10-2,5 0-2,5 Visual display Stainless steel 10 -40-200
AT 4259R10-4 0-4 Visual display Stainless steel 10 -40-200
AT 4259R10-6 0-6 Visual display Stainless steel 10 -40-200
AT 4259R10-10 0-10 Visual display Stainless steel 10 -40-200
AT 4259R10-16 0-16 Visual display Stainless steel 10 -40-200
AT 4259R10-25 0-25 Visual display Stainless steel 10 -40-200
AT 4259R10-40 0-40 Visual display Stainless steel 10 -40-200

Product information

Main facts

DimensionPNTemperature rangeMaterial

G 3/8

Full scale value for temporary load-40°C to +80°C

Stainless steel

Range of Application

For measuring the pressure of liquefied or gaseous non-aggressive media, primarily water, air or steam. For pressure measurement of liquid or gaseous, aggressive media are both pressure gauges AT 4256 and AT 4259 in industrial design and is then called AT4256R and AT 4259R.

Program text

UGC.31 Pressure Gauge
Pipe-mounted, with analogue display of instantaneous value. Pressure Gauge AT 4259 of Bourdon tube type. Class 1.0, housing diameter 100 mm, graded 0 -.... bar.

Quality Assurance

PED, AFS 1999:4

Material Specification

AT 4259
2Bodychromium nickelsteel with bayonet unruffled capsule
3Measuring elementbrass
4Glassinstrument glass
Parts in toutch with media made by copper alloy

Material Specification Industrial Design

AT 4256R, AT 4259R
BodyChromium nickelsteel with bayonet unruffled capsule
Measuring elementStainless steel
GlassLaminated protection glass
Wetted materialStainless steel 1.4404

Dimensions

AT 4259-15 /4259-10
Standard Industrial design
A87
B100
CG 1/2 / G 3/8
D50
Measurement in mm.

Function and Design

The pressure gauge is a bourdon tube type, which involves a circle-formed tube spring with an oval cross-section. The system pressure internally affects the Bourdon tube so that it, at a certain pressure tends to straighten out. The free end of the Bourdon tube moves proportionally with the internal pressure. This movement is then converted by the measuring element into a movement/indication value on the dial.

Technical Information

AT 4259AT4259R
Media temperature-40°C to +80°C-40°C to +200°C
Ambient temperature-40°C to +60°C-40°C to +60°C
Accuracy class1%1%
Effect of temperature0,4%/10°C0,4%/10°C
IP klass5465
Max. working pressureThe hole scale value at resting load. 90% of the scale value at fluctuating loads.The hole scale value at resting load. 90% of the scale value at fluctuating loads.

Dimensioning

The scale range should be selected in accordance to the constant pressure that not should exceed 2/3 of the scale range.

Accesories and Options

For complete pressure gauge sets including control pressure gauge valve, water trap pipe and pressure gauge valve, please see our AT 1800-1806 product sheet.
The pressure gauges are also available in stainless steel, damping fluid-filled, with a connection tap on the back and with non-standard gradings.

Installation

The pressure gauges are to be mounted so that they are both easy to read and protected against vibrations, heat, cold and high air humidity. For high fluid temperatures, a water trap pipe should be used. For pressure variations and vibrations, a damping fluid-filled pressure gauge should be used.

Marking

The products are marked with Armatec (standard products), class and grading.

How to order

Exempel: AT 4259-10-6
AT 4259-106
Article no.ExecutionDNGrading
AT 4256=bodydiam. 160 mm- =standard-15
AT 4259=bodydiam. 100 mmD=damping fluid filled
R=rust-resistant model
U=decompression