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Bürkert Proportional pressure regulator 249897 2861 G 1/8 Nominal width (details) 1.6 mm Enclosure material Brass Sealan
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Datasheet (PDF)
Highlights & Details
Proportional valve
- High dynamic range
- Nominal diameter range DN 0.8 ... 2.0 mm
- Good adjustment range
Technical specifications
- Sealing Material - Seat Seal Material Category: Elastomers
- Sealing Material - Seat Seal Material: FKM (Fluoro Rubber)
- Sealing material - external sealing Material: FKM (fluororubber)
- Pressure & Temperature - Temperature Medium min -10 °C.
- Pressure & Temperature - Temperature Medium max. 90 °C.
- Pressure & temperature - ambient temperature min: -10 °C.
- Pressure & temperature - temperature Surroundings max. 55 °C
- Pressure & temperature - nominal pressure at least -1 bar
- Pressure & temperature - nominal pressure max. 6 bar
- Pressure & Temperature - pressure difference max. 6 bar
- Electrical connection - Device socket in the range of supply: Not included
- Electrical connection - Electrical connection Type: Connector diagram Form B according to industry standard
- Electrical connection - Electrical connection Position: In flow direction left
- Electrical connection - Electrical connection Number of contacts: 2 + protective conductor
- Electrical connection - Electrical connection type: Male
- Equipment characteristics - main valve operating principle: Seat valve
- Device properties - rated mode/duty cycle: 100%
- Equipment properties - Flow: Under seat
- Device properties - Vacuum version: No.
- Device Properties - Oxygen Type: No.
- Device features - Drive type: Lifting anchor
- Device properties - operation: Direct action
- Device Properties - Media Separation: No.
- Device features - switching function: Continuous
- Device Properties - Analysis Execution: No.
- Device Properties - Steam Type: No.
- Equipment characteristics - core management: Sliding ring
- Features - PWM frequency min.: 650 Hz
- Device features - PWM frequency max. 800 Hz
- Device properties - setting range: 1:25
- Equipment characteristics - core management 2: Bushings
- Medium & Calibration - installation position: Arbitrary
- Medium & Calibration - suitable for liquid media: Yes
- Medium & calibration - suitable for gaseous media: Yes
- Nominal width (kV value) - QNn value (gas): 59 l/min.
- Nominal width (kV value) - main valve nominal width 1 (P) (mm): 1.6 mm
- Nominal width (kV value) - kV Water value: 0.055 m3/h.
- Nominal width (kV value) - Main valve nominal width 1 (inch): 1/16 inch
- Process/line connection – line connection 1 type: Internal thread
- Process/cable connection - cable connection 1 Thread name: 1/8
- Process/cable connection - cable connection 1 Thread type: G.
- Process/line connection – line connection 2 type: Internal thread
- Process/cable connection - cable connection 2 Thread type: G.
- Process/cable connection - cable connection 2 Thread name: 1/8
- Protection class IP rating (max. for suitable connection) IP65
- Voltage - voltage min. / nominal voltage: 24 V
- Voltage - voltage max. / nominal voltage 24 V
- Voltage - AC voltage: No.
- Voltage - DC voltage: Yes
- Voltage - voltage tolerance positive: 10%
- Voltage - voltage tolerance negative: 10%
- Coil (Kern) - spool size 20 mm
- Coil (Kern) - Coil resistance 82 ohms
- Coil (Kern) - coil type: Block screwed
- Coil (Kern) - Material coil (envelope): EP (epoxy resin)
- Coil (Kern) - Thermal insulation class of the drive: H
- Coil (Kern) - part Kern in contact with medium Material: Stainless steel
- Coil (Kern) - part that is in contact with the medium Plug material: Stainless steel
- Coil (Kern) - Part in contact with medium Core guide tube Material: Stainless steel
- Coil (Kern) - Part in contact with medium Core guide element 1 Material: Stainless steel
- Coil (Kern) - Part in contact with medium Core guide element 2 Material: Stainless steel
- Materials - main valve material in contact with medium: Brass
- Operating principle - fluid line connection Number: 2
- Operation - Valve function Number of switching positions: 2
- Operation - Valve function: A - closed at rest - pressure connection 1 (P/NC)A - closed at rest - pressure connection 1 (P/NC)
- Approvals - nominal power 5 W
- Type
249897
- Product type
Proportional pressure regulator
- Operating voltage
24 V
- Enclosure material
Brass
- Connection
G 1/8
- Max. operating pressure
6 bar
- Operating temperature
-10 °C (min)
- Min. operating temperature
-10 °C
- Current consumption
5 W
- Manufacturer part #
249897
- Operating pressure (min.)
-1 bar
- Sealant
FKM
- Function
2/2-way
- Media temperature (range)
-10 up to 90 °C
- Max. media temperature
90 °C
- Media temperature (min.)
-10 °C
- Medium
Compressed air
- Nominal width
1.6 mm
- QNn value
59 l/min
IP65
- Control pressure (max.)
6 bar
- Control pressure (min.)
-1 bar
- Max. ambient temperature
55 °C
- Min. ambient temperature
-10 °C
- Operating principle
Direct action
- KV value
0.055 m³/h
- UKCA
not relevant
Documents & Downloads
Datasheet
Datasheet 3047044 Bürkert Proportional pressure regulator 249897 2861 G 1/8 Nominal width (details) 1.6 mm Enclosure material Brass Sealan
User & Safety Instructions
User & Safety Instructions 3047044 Bürkert Proportional pressure regulator 249897 2861 G 1/8 Nominal width (details) 1.6 mm Enclosure material Brass Sealan
Description
The extremely compact proportional valve type 2861 is available up to a nominal diameter of 2mm and is based on the higher standard version of type 2871. It serves as an actuator in closed process control circuits (pressure, flow, temperature, etc.).
Compared to the standard version, the valve essentially has a simpler interior design, and installation and testing effort are optimized so that higher batch sizes can be operated for large-volume applications in a shorter time.
This text is machine translated.
Compared to the standard version, the valve essentially has a simpler interior design, and installation and testing effort are optimized so that higher batch sizes can be operated for large-volume applications in a shorter time.
This text is machine translated.
Hints
The kv factor indicates the volume flow through a valve, measured in litres/min at 1 bar and at a water temperature between 5 and 30°C. The QNn factor indicates the gas volume flow, measured in litres/min