Type 8311

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1.

General technical data

Product properties

Material

Please make sure the device materials are compatible with the fluid you are using.

Detailed information can be found in chapter “3.1. Chemical Resistance Chart – Bürkert resistApp” on page 5.

Non wetted parts

Housing, cover

PC, + 20 % glass fibre

Cover seal

Silicone

Front panel foil

Polyester

Seal

FKM (EPDM on request)

Screws

Stainless steel

Plug

• Female cable plug/male fixed plug in PA (body, contact holder and cable gland) with electrical

contact in Sn and cable gland seal and flat seal in NBR

• Swivel 5-pins M12 male fixed plug in PA with electrical contact in brass, gold-plated

Flat seal

NBR

Wetted parts

Process connection

Stainless steel 1.4404 (316L)

Measurement element

Stainless steel 1.4404 (316L)

Seal

FKM (EPDM on request)

Dimensions

Detailed information can be found in chapter “4. Dimensions” on page 6.

Compatibility

Any pipe with a ½" threaded sensor connection piece (G, NPT or Rc)

Measurement technology

Piezo-resistive

Measured variable

Relative pressure

Sensor element

Ceramic cell (Al

2O3)

Measuring range

0…1, 2, 5, 10, 20 or 50 bar (0…14, 29, 73, 145, 290 or 725 PSI)

Detailed information can be found in chapter “6.3. Ordering chart” on page 10.

Weight

200 g…350 g according to the version

Performance data

Measurement deviation

• Transmitter 2-wire version:

– for - 20 °C < T

fluid < 0 °C: ≤± 1 % ± 0.03 % of full scale / °C

– for 0 °C < T

fluid < 70 °C: ≤ ± 1 % of full scale

– for 70 °C < T

fluid < 100 °C: ≤± 1 % ± 0.03 % of full scale / °C

• Switch version: ≤ ± 1.5 % of full scale

Repeatability

• Transmitter 2-wire version: ≤ ± 0.06 % (typical)

• Switch version: ≤ ± 0.25 % (typical)

Measuring range resolution

Transmitter 2-wire version with a:

• 0…1 bar cell: 0.5 mbar

• 0…2 bar cell: 1.33 mbar

• 0…5 bar cell: 3.33 mbar

• 0…10 bar cell: 5 mbar

• 0…20 bar cell: 10 mbar

• 0…50 bar cell: 25 mbar

Overload / bursting pressure

• 0…1 bar cell: 2 bar (29 PSI) / 4 bar (58 PSI)

• 0…2 bar cell: 4 bar (58 PSI) / 7 bar (101 PSI)

• 0…5 bar cell: 10 bar (145 PSI) / 12 bar (174 PSI)

• 0…10 bar cell: 20 bar (290 PSI) / 25 bar (362 PSI)

• 0…20 bar cell: 40 bar (580 PSI) / 50 bar (725 PSI)

• 0…50 bar cell: 100 bar (1450 PSI) / 120 bar (1740 PSI)

Service life of pressure cell

Min. 100 million cycles

Electrical data

Operating voltage

12…30 V DC, filtered and regulated

Power source (not supplied)

The auxiliary energy of the pressure sensor must meet SELV requirements; optionally, an ener-

gy-limited current circuit according to section 9.3 of DIN EN 61010-1 and UL 61010-1 can be

used.