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Printed in U.S.A.

8-08

©

 

Copyright 2008 TAC All Rights Reserved.

F-26159-5

Application

The CP-8551 and CP-8552 transducers receive a 
variable electronic input signal and produce a 3 to 15 
psig (21 to 103 kPa) pneumatic output signal to position 
pneumatic damper and valve actuators in HVAC 
systems.

Features

Durable enclosure with easily accessible wiring 
terminations

Panel or DIN rail mounting for quick, snap-on 
installation

Two-wire loop powered or three-wire voltage input

High accuracy with low hysteresis

Long-term driftless operation with high repeatability

Low air consumption and large air flow capacity

Control input protection from short circuit or reverse 
polarity

Applicable Literature

TAC Environmental Controls Reference Manual, 
F-21683

EN-123 Air Quality Requirements for Pneumatic 
HVAC Control Systems Engineering Information, 
F-22516

TAC Pneumatic Products Catalog, F-27383

CP-8551 & CP-8552

Electronic to Pneumatic Transducers

General Instructions

Summary of Contents for CP-8551

Page 1: ...il mounting for quick snap on installation Two wire loop powered or three wire voltage input High accuracy with low hysteresis Long term driftless operation with high repeatability Low air consumption...

Page 2: ...Acting Maximum Pneumatic Output 1 to 18 psig 7 to 124 kPa Output Air Capacity Pressure 515 scim 141 ml s maximum with a 20 psig 138 kPa supply Operating Characteristics Linearity 1 of span 75 F 24 C...

Page 3: ...screws not provided M 636 4 in T and B wire tie not provided Training Installer must be a qualified experienced technician CP 8551 M B M 3 to 15 psig 21 to 103 kPa to controlled device direct acting...

Page 4: ...marily to provide a degree of protection against contact with the enclosed equipment Do not locate unit in areas subject to incidental contact vibration severe mechanical shock excessive moisture or c...

Page 5: ...per selection as follows 1 Choose input range 2 Consult Table 1 for jumper position 3 Place jumper over square posts on appropriate lettered block Figure 4 4 Calibrate by performing appropriate CHECKO...

Page 6: ...unction 2 Verify that the unit is mounted upright and wired correctly 3 Verify that 20 psig 138 kPa main air is present 4 Verify with a digital multimeter that a 4 to 20 mAdc signal is present and of...

Page 7: ...gnal to bottom of range 0 or 6 V 7 Branch pressure should be 3 psig 21 kPa If not adjust start point potentiometer Figure 4 to obtain a 3 psig 21 kPa output 8 Adjust input to top of range 9 or 10 V 9...

Page 8: ...marks and registered trademarks are the property of their respective owners Information contained within this document is subject to change without notice F 26159 5 www tac com TAC 1354 Clifford Avenu...

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