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Model DSS34T High Quality Pressure Sensor with Mounted Diaphragm Seal

Brand: WIKA Alexander Wiegand SE & Co. KG
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Diaphragm seal systems are used to protect the pressure measuring instrument from aggressive, adhesive, crystallising, corrosive, highly viscous, environmentally hazardous or toxic media.

The diaphragm made of stainless steel provides for the separation from the medium. The pressure is transmitted to the measuring instrument via the system fill fluid which is inside the diaphragm seal system.
Features
  • Process connection with thread to provide for direct threaded connection.
  • Version with internal diaphragm.
  • Diaphragm seal parts all welded.
  • Universal application.
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Diaphragm seal systems are used to protect the pressure measuring instrument from aggressive, adhesive, crystallising, corrosive, highly viscous, environmentally hazardous or toxic media.

The diaphragm made of stainless steel provides for the separation from the medium. The pressure is transmitted to the measuring instrument via the system fill fluid which is inside the diaphragm seal system.
Features
  • Process connection with thread to provide for direct threaded connection.
  • Version with internal diaphragm.
  • Diaphragm seal parts all welded.
  • Universal application.
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Specifications

Brand

Design

  • High-Quality Pressure Sensor, welded to Diaphragm Seal, welded Design

Current Output

  • 4 ... 20 mA (2-Wire)

Power Supply

  • DC 8 ... 35 V

Accuracy at Reference Conditions

  • ≤ ± 0.5 % of Span

Permissible Load in Ω

  • Current output ≤ (Power Supply - 7.5 V) / 0.023 A

Current Supply

  • Maximum 25 mA

Dissipation Loss

  • 828 mW

Reference Conditions (per IEC 61298-1)

  • Mounting Position: Calibrated in vertical mounting position with pressure connection facing downwards
  • Power Supply: DC 24 V
  • Humidity: 45 ... 75 % Relative Humidity
  • Atmospheric Pressure: 860 ... 1,060 mbar [12.5 ... 15.4 psi]
  • Temperature: 15 ... 25° C [59 ... 77° F]

Pressure Limitation

  • ≥ 10 bar [150 psi]: 2 times
  • < 10 bar [150 psi]: 3 times

Permissible Temperature Range

  • Storage:  10° to 60° C [50° to 140° F]
  • Ambient:  10° to 40° C [50° to 104° F]
  • Medium:  -10° to 150° C [14° to 302° F]

Ingress Protection

  • IP65 per IEC/EN 60529

Wetted Material

  • Diaphragm Seal: Stainless Steel 1.4404 (316L)
  • Diaphragm: Stainless Steel 1.4435 [316L], Hastelloy C-276

Non-Wetted Material

  • Angular Connector: PBT/PET GF30
  • Zero Adjustment Ring: PBT/PET GF30
  • Case: Stainless Steel 1.4571 [316Ti]

Level of Cleanliness of Wetted Parts

  • Oil and grease free per ASTM G93-03 level F and ISO 15001 (< 1,000 mg/m²)

System Fill Fluid

  • Silicone oil KN 2 for general applications

Permissible Humidity (per IEC 68-2-78)

  • ≤ 67 % Relative Humidity at 40° C [104° F] (In accordance with 4K4H per EN 60721-3-4)
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Applications

  • For aggressive, contaminated or hot media
  • Chemical and petrochemical industries
  • Water treatment
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