Transducers

EP-8000 Series



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EP-8000 Series

EP-8000 Series Electro-Pneumatic Transducers EP-8000 Series

EP-8000 Series Electro-Pneumatic Transducers

 

The Johnson Controls EP-8000 Series electro-pneumatic transducers convert a voltage or current signal from an electronic controller into a pneumatic output pressure signal. Four models are available, which are grouped into two basic versions: low-volume output units (non-relay) and high-volume output units (relay). The EP-8000 is designed to output a proportional pneumatic control signal in response to an electronic control signal. All units feature barbed air connections for 5/32 or 1/4 inch O.D. polytubing.


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Features
  • Compact simple design
  • Choice of 0-10 VDC or 4-20ma
  • Hyperdermic needle test point access
  • Factory set, fully adjustable zero and span
  • High accuracy with low hysteresis
  • 1/4″ or 5/32″ pneumatic tubing connections
Specifications

Input:0.5-9 VDC, 0.25-9.5 VDC, 4-20 mA

Input Impedance:Voltage models: 1000Ω min.

Current models: 350Ω max.:

Wiring Terminations:Terminal block for 18-24 AWG wire

Action:Proportional, direct acting

Air Capacity:Low volume models: 12.3 ml/s (45 scim) max. (value specified for dead-ended loads or with controlled devices/applications with a max. air consumption of 2.7 ml/s [10 scim])

High volume models: 437 ml/s (1600 scim) max.:

Air Connections:Barbed fittings for 5/32 or 1/4″ O.D. polytubing

Air Consumption:Low and high-volume models: 12.3 ml/s (45 scim) max.

Linearity:5% maximum of output span between 3-15 psig (21-103 kPa)

Hysteresis:1.4 kPa typical

Materials Of Construction:Body: Polysulphone

Case and cover: UL94 V-O rated polycarbonate:

Enclosure protection: IP 42 according to DIN 40 050 AND IEC 144:

Air connections: Brass:

Output:1-18 psig (7-126 kPa); low volume, non-relay, 0.5-19 psig (3.5-133 kPa), high volume, relay, 3-15 psig (21-105 kPa), low volume, non-relay, 3-15 psig (21-105 kPa), high volume, relay

Adjustments:Voltage models: 20 VDC max. input; span adjustable from 7.5-15 VDC

Current models: 30 mA DC max. input; span adjustable from 10-20 mADC:

All models: Output can be shifted ±9 psig (63 kPa) using zero adjustment screw:

Operating Temperature:41° to 122℉ (5° to 50℃)

Operating Humidity:10 to 90% RH, non-condensing

Mounting:Surface mounted or installed on a valve pneumatic actuator

Pressure:18 to 25 psig (126 to 175 kPa); nominal 20 psig (140 kPa); air supply must be clean, dry, and oil free

Sensitivity:0.3 psig/psig (0.3kPa/kPa)

Temperature Coefficient:0.64 kPa/℃

Approvals:CE

Weight:

8000-1/-3:0.5 lb (0.23 kg)

8000-2/-4:0.6 lb (0.27 kg)

Download Additional Data

document   EP-8000 Series Datasheet