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8400 Screw-in Temperature Sensor/Switch
Brand: Burkert Fluid Control Systems
This intelligent sensor/switch with an extralarge display is specifically designed to switch a valve and to establish a monitoring system or an ON/OFF control loop. Compact and wall versions are available. The wall-mounted version must be inserted into a holder previously mounted on a wall, and it must be associated with a remote temperature sensor.
The switching points can be programmed with the 3 key pads or optionally, with input 4-20 mA, from an external PLC over a 4-20 mA loop. As an option, the process value can additionally be transmitted to the PLC (4-20 mA). The connection of the 8400 to the process in the piping is made using standard fittings.
Features- Indication, monitoring, transmitting and On/Off control in one device
- Extra-large display
- Menu-guided parametrisation
- Complete control loop with external setpoint
Specifications
Accuracy
- Switching: ± 0.5° C (± 0.9° F) at (0° to 80° C [32° to 176° F])
- Switching: ± 1.5° C (± 2.7° F) at (Outside of 0° to 80° C [32° to 176° F])
Ambient Temperature Range
- -20° to 60° C (-4° to 140° F)
Approvals & Certifications
- CE
- EU Directives
- PED 2014/68/EU
BSP Connection
- G 1/2" Male
- 1/2" BSPT Male
Circuit Protection
- Short Circuit Protected
Consumption
- Current (Compact Version): 80 mA - Maximum
- Current (Wall-mounted Version): 50 mA - Maximum
Diameter
- Any Pipe with Sensor Connection 1/2" (12.7 mm)
Display
- Large Digital Display with 8-Characters (4-Digital & 4 Alphanumeric Characters)
Electrical Connectors
- 1/2" NPT Female Cable Plug
- Cable Plug: EN 175301-803
- M16 x 1.5 mm Cable Plug (Female)
- Multipin: Swivel M12, 5-Pin or M12, 4-Pin or 8-Pin
- Voltage Supply Cable: 0.14 to 0.5 mm², Maximum
- Voltage Supply Cable: Shielded
Enclosure, Body Material
- 20% Glass Fibre
- Polycarbonate (PC)
Environmental Protection
- IP65
Humidity
- ≤ 80% Relative Humidity, Non-Condensing
Input
- Input External Set Point (Compact Version): 4-20 mA
- Pt100 (3-Wired)
Input Impedance
- Input External Set Point (Compact Version): 250 ohms, Maximum
- Voltage Supply Cable (Wall-mounted Version): 5 ohms, Maximum
Loop Resistance
- 1,000 ohms at 30 Vdc
- 500 ohms at 18 Vdc
- 800 ohms at 24 Vdc
Materials of Construction
- Front Panel Folio: Polyester
- Multipin: Polyamide (PA)
- Wall-mounted Holder: PVC
Mounting
- Wall Mounted
NPT Connection
- 1/2" NPT Male
Output
- 4-20 mA
- Compact Version (Transistor): 5-30 Vdc at 700 mA - Maximum
- Wall-mounted Version: 700 mA at 30 Vdc, Maximum
Output Format
- Compact Version (Transistor): Open Collector
Plug Material
- Cable Plug: Polyamide (PA)
Power Supply
- 12-30 Vdc, Filtered & Regulated
Pressure Range
- psi: 0 to 232.1 (kPa: 0 to 1,600, bar: 0 to 16), Maximum
Process Temperature
- 125° C (257° F), Maximum
Relay Output
- Compact Version: 3 A at 30 Vdc
- Compact Version: 3 A at 48/250 Vac
Repeatability
- ≤ ± 0.4%
Response Time
- 10 to 90%: 7 seconds (For One Step Increment from 0 to 100° C [32 to 212° F])
Reverse Polarity Protection
- Protected Against Reverse Polarity
RTD Type
- Pt100
Screw Material
- Stainless Steel
Seat / Seal Material
- Seal: FKM
Sensor, Probe Connection
- 3-Wire
Set Point - Decreasing
- -40° to 125° C (-40° to 257° F)
Set Point - Increasing
- -40° to 125° C (-40° to 257° F)
Switch Type
- Transistor (NPN & PNP)
Wetted Materials
- Sensor Element: Stainless Steel
