Product Overview

ManualsBrandsJohnson Controls ManualsHVAC Replacement PartsElectro Pneumatic High Volume Transducer 0-10 VDC

Table Of Contents

EP- 8000 Series Electro- Pneumatic Transducers

FANs 216, 1628.3

Product/Technical Bulletin EP-8000

Issue Date 1196

Part No. 24-85368-36, Rev. E

Code No. LIT-216370

EP-8000 Series Electro-Pneumatic Transducers

convert a voltage or current signal from an electronic

controller into a pneumatic output pressure signal. An

increase or decrease in the input signal proportionally

increases or decreases (respectively) the output

pressure signal from the EP-8000. Four models are

available, which are grouped into two basic versions:

low-volume output units (non-relay) and high-volume

output units (relay).

Electro-Pneumatic

Transducer EP-8000-1

Low Volume Output

Input

0 to 1 0 VDC

Output

1 to 18 psi

Test Port

Ze ro Ad

Electro-Pneumatic

Transducer EP-8000-4

h Volume Output

Inpu t

4 to 20 ADC

Output

3 to 15 psi

Test Port

Zero Ad

Figure 1: The EP-8000 Low Volume (Left) and the

EP-8000 High Volume (Right)

Features and Benefits

❑

Compact, Simple Design

Eases installation on a variety of mounting

surfaces, including direct mounting on pneumatic

valve actuators

❑

Choice of 0-10 VDC or

4-20 mA Input Range

Interfaces with a wide range of controllers, making

the unit ideal for retrofit installations

❑

Hypodermic Needle Test

Point

Allows for fast and easy output pressure signal

measurement

❑

Factory Set,

Fully

Adjustable Zero and Span

Facilitates field calibration, saving installation costs

❑

High Accuracy with Low

Hysteresis

Provides many years of use with less time spent on

maintenance

EP-8000 Series Electro-Pneumatic Transducers

Summary of content (8 pages)

PAGE 1
FANs 216, 1628.3 Product/Technical Bulletin EP-8000 Issue Date 1196 EP-8000 Series Electro-Pneumatic Transducers EP-8000 Series Electro-Pneumatic Transducers convert a voltage or current signal from an electronic controller into a pneumatic output pressure signal. An increase or decrease in the input signal proportionally increases or decreases (respectively) the output pressure signal from the EP-8000.
PAGE 2
O verview I nput vs. Output Relationship 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. Sequencing of pneumatic valve or damper actuators can be accomplished using a Johnson Controls V-9502 (Valve) or D-9502 (Damper) Actuator Positioner.
PAGE 3
D imensions I nstallation 5° 5° Z e ro A d ju stm e n t S cre w Parts Included W irin g E n try S lo t 3-11/32 85 T w o M o u n tin g S lo ts fo r N o . 8 3 /8 in . S lo tte d P a n -h e a d S h e e t M e ta l S cre w s H yp o d e rm ic N e e d le T e st P o in t 1-1/2 38 1-29/32 48 2-11/32 60 Figure 6: EP-8000 Low-volume Output Model Dimensions (in./mm) 5° 5° W irin g E n try S lo t T w o M o u n tin g S lo ts fo r N o . 8 3 /8 in .
PAGE 4
M ounting B racket N uts (2) M o un ting B racke t A n g le B ra cke t N u t A ngle B racket B olt N o . 8 -3 2 S cre w Long S p a ce r M o u n tin g B ra cke t W a sh e rs (4 ) M o u n tin g B ra cke t S cre w s (2 ) E P -8 0 0 0 T ra n sd u ce r or C o ve r F la n g e C o ve r V-3000-1 M ou nting Detail 4R, 5R, 8R, F la n g e V-400, and V-500 M ou n ting Detail No.
PAGE 5
Observe the following guidelines when making wiring connections: • Remove the cover of the EP-8000 by gently prying up on the two snap-in cover tabs. • Observe the polarity as designated on the terminal block of the EP-8000. • Provides adequate stress relief for the wiring. A wiring entry slot is molded into the cover for routing to an analog DC source.
PAGE 6
Temperature Sensing Element N.O. A ir In ta ke N.C.
PAGE 7
9. Connect an input signal to the unit: 0 to 10 VDC for voltage models, 4 to 20 mA DC for current models. 10. Set the input signal to the desired low value (VL or IL). 11. Turn the zero adjustment screw to obtain the desired low pressure (PL). Clockwise rotation increases the pressure; counterclockwise rotation decreases the pressure. 12. Set the input signal to the desired high value (VH or IH). 13. Turn the span adjustment potentiometer to obtain the desired high pressure (PH).
PAGE 8
Specifications Product Models Action EP-8000 Series Electro-Pneumatic Transducers See Table 1. Proportional, direct acting Supply Pressure 18 to 25 psig (126 to 175 kPa); nominal 20 psig (140 kPa); Air supply must be clean, dry, and oil free. Supply Pressure Sensitivity 0.3 psig/psig (0.