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Model DSS27T High Quality Pressure Sensor with Mounted Diaphragm Seal
Brand: WIKA Alexander Wiegand SE & Co. KGDiaphragm 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- Flange with a flush welded diaphragm.
- Robust, all welded design.
- Universal application.
Specifications
Design
- High-Quality Pressure Sensor, Diaphragm Seal with flange Connection, flush Diaphragm
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]
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)
- For aggressive, highly viscous, crystallising or hot media
- Process industry
- Machine building and plant construction
