Model Options

Name: Dwyer Instruments 285ER-S5 | Smart positioner | Hart® communication | Single acting | Aluminum enclosure
Brand: Dwyer
SKU: 285ER-S5
Rating: 5 (1 reviews)

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ENCLOSURE MATERIAL Aluminum diecasting or 316SS

Connection

Approvals CE

Sensitivity ±0.5% of FS

Air Supply 20 to 101 psig (1.4 to 7.0 bar)

Repeatability ±0.5% of FS

Hysteresis 1% of FS

Air Consumption 0.10 SCFM (3 LPM) at 20 psig (1.4 bar) supply

Capacity Flow: 28 SCFM (80 LPM) at 20 psig (1.4 bar) supply

Linearity ±2% of FS

Weight 6.2 lb (2.8 kg)

Maximum operating temperature -4 to 158°F (-20 to 70°C)

Enclosure Rating IP66

Stroke 0 to 90°

Input signal Pneumatic: 3 to 15 psig (0.2 to 1 bar); Electro-Pneumatic: 4-20 mA DC

Dwyer Instruments 285ER-S5 | Smart positioner | Hart® communication | Single acting | Aluminum enclosure

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Part Number : 285ER-S5

285ER-S5 model number Rotary Smart Positioners combine affordability with a high-performing, user-friendly device. Based on an input signal of 4 to 20 mA from the controller, Series 285 models precisely manage the valve stroke of rotary motion valves, such as W.E. Anderson ball or butterfly valves. It is perfect for difficult conditions because of its sturdy, robust build. The Smart Positioner's extremely effective microprocessing unit is shielded by its NEMA 4X (IP66) enclosure grade. Any valve system can be stabilized with the output of an analog feedback signal, and the accuracy of the device is guaranteed by user-friendly features like auto calibration. Low air usage lowers operating costs without compromising the Smart Positioner's functionality. This unit's small size makes it simple to use with any size actuator. With the LCD panel integrated into the outside of the device, Smart Positioners make it simple to check the positioner's condition while out in the field. User-selectable single or double action is offered, with HART® communication as the default. The 285 will fail in place if the 4–20 mA input signal is lost.

Specification
Features
Catalog

Specifications

Details

Input signal

Pneumatic: 3 to 15 psig (0.2 to 1 bar); Electro-Pneumatic: 4-20 mA DC

ENCLOSURE MATERIAL

Aluminum diecasting or 316SS

Connection

Air Supply: 1/4" NPT

Connection

Gage: 1/8" NPT

Connection

Electrical: Screw terminal

Connection

1/2" NPT

Linearity

±2% of FS

Sensitivity

±0.5% of FS

Repeatability

±0.5% of FS

Air Consumption

0.10 SCFM (3 LPM) at 20 psig (1.4 bar) supply

Capacity

Flow: 28 SCFM (80 LPM) at 20 psig (1.4 bar) supply

Stroke

0 to 90°

Enclosure Rating

IP66

Maximum operating temperature

-4 to 158°F (-20 to 70°C)

Weight

6.2 lb (2.8 kg)

Approvals

Air Supply

20 to 101 psig (1.4 to 7.0 bar)

Hysteresis

1% of FS