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8311 Pressure Transmitter/Switch
Brand: Burkert Fluid Control Systems
This intelligent mini transmitter/switch with an extra-large display is specially designed to switch alarms and to establish a monitoring system or an On/Off control loop. The switching points can be programmed with the three-key keypad under the display. In addition, the process value can be transmitted to the PLC (4-20 mA). The connection to the process in the piping is made using standard fittings (G 1/2", 1/2" NPT, Rc 1/2").
Features- Indication, monitoring, transmitting and continuous or On/Off control in one device
- Output signal 4-20 mA, 2-wire for continuous control
- Transistor or relay outputs for On/Off control or alarm function
Specifications
Accuracy
- Switch Version: ≤ ± 1.5 % of Full Scale
- Transmitter 2-Wire Version (For 0° C < T < 70° C): ≤ ± 1 % of Full Scale
- Transmitter 2-Wire Version (For -20° C < T < 0° C & for 70° C < T < 100° C): ≤ ± 1 % ± 0.03 % of Full Scale/°C
Ambient Temperature Range
- Operating & Storage: 0° to 60° C (32° to 140° F)
Approvals & Certifications
- EMC (Transmitter Version: EN 50081-1, 61000-6-2, Switch Version: EN 50081-1, 50082-2)
- LVD (Transmitter Version: EN 61010-1, Switch Version: EN 61010-1)
- PED 97/23/CE
BSP Connection
- G 1/2” Male
- 1/2” BSPT Male
Burst Pressure
- psi: 58.02 to 1,740 (kPa: 400 to 12,000, bar: 4 to 120)
Cable Length
- Voltage Supply Cable: 164 feet (50 metres)
Circuit Protection
- Short Circuit Protected
Consumption
- Current (Switch Version): < 750 mA (with Load - PNP Output Configuration)
- Current (Switch Version): < 80 mA (with Load - Relay Version)
- Current (Transmitter 2-Wire Version): < 30 mA (700 mA - Max.
Cover Material
- 20 % Glass Fibre
Diameter
- Pipe: 1/2” (12.7 mm)
Display
- Large Digital Display with 8-Characters
Electrical Connectors
- Cable Plug: EN 175301-803
- Swivel 5-Pin M12 Male Fixed Connector for Female 5-Pin M12 Cable Plug
- Voltage Supply Cable: 0.14 to 0.5 mm², Max.
- Voltage Supply Cable: Shielded
Electrical Contacts
- Switch Version: Normally Closed
- Switch Version: Normally Open
Electrical Protection
- Overvoltage Protection
Element
- Sensor: Ceramic Cell (Al₂O₃)
Enclosure, Body Material
- Polycarbonate (PC)
Environmental Protection
- IP65
Humidity
- ≤ 80 % Relative Humidity, Non-Condensing
Loop Resistance
- Transmitter 2-Wire Version: 300 ohms at 18 Vdc
- Transmitter 2-Wire Version: 550 ohms at 24 Vdc
- Transmitter 2-Wire Version: 800 ohms at 30 Vdc
Materials of Construction
- Front Panel Folio: Polyester
- Multipin: Polyamide (PA)
Nominal Pressure
- psi: 0 to 725.2 (kPa: 0 to 5,000, bar: 0 to 50)
NPT Connection
- 1/2” NPT Male
Output
- Switch Version (NPN Transistor): 0.2-30 Vdc
- Transistor: 700 mA - Max.
- Transmitter 2-Wire Version: 4-20 mA
Output Format
- Open Collector
Plug Material
- Cable Plug: Polyamide (PA)
Power Supply
- 12-30 Vdc, Filtered & Regulated
Pressure Cycles
- Service Life of Pressure Cell: Min. 100 Million Cycles
Pressure Range
- bar: 2 to 100
- kPa: 200 to 10,000
- psi: 29.01 to 1,450
Process Temperature
- -20° to 100° C (-4° to 212° F)
Relay Output
- Switch Version: 3 A at 250 Vac / 30 Vdc
Repeatability
- Switch Version: ≤ ± 0.25 %
- Transmitter 2-Wire Version: ≤ ± 0.06 %
Reverse Polarity Protection
- Protected Against Reverse Polarity
Screw Material
- Stainless Steel
Seat / Seal Material
- Seal: EPDM
- Seal: FKM
Shock
- EN 60068-2-27
Switch Type
- Transistor (NPN or PNP)
Vibration
- EN 60068-2-6
Wetted Materials
- Stainless Steel