Omega CT7300 User Manual

www.omega.com

e-mail: [e-mail]

User’s Guide

CT7300 SERIES

2 Pen Circle Chart Recorder

Shop online at

®

1

MADE IN

Servicing North America:

USA: One Omega Drive, Box 4047

ISO 9001 Certified Stamford CT 06907-0047

Tel: [phone] FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada
Tel: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378 / 1-800-622-BEST

®

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN

®

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico: En Espan˜ol: [phone]-7803 e-mail: [e-mail]

FAX: [phone] [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Frystatska 184/46, 733 01 Karvina´, Czech Republic

Tel: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

Tel: [phone] FAX: [phone]
Toll Free in France: 0800 466 342
e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Tel: [phone] FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom
Tel: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

www

.omega.com [e-mail]

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

i

Contents CT7300 Recorder

Chapter 1 Overview

1-1 General
1-2 Ordering Code

Chapter 2 Installation

2-1 Unpacking

2-2 Mounting

2-3 Case Location
2-4 Wiring Precautions

2-5 PowerWiring

2-6 Sensor Installation

Guidelines

2-7 Thermocouple Input

Wiring

2-8 RTD Input Wiring

2-9 Linear DC Input Wiring

2-10 Alarm Relay Wiring

2-11 Changing the Chart

2-12 Marking Systems

2-13 Replacementof Pen
2-14 BatteryBackup

Page Number

1
2

3

3
4
5

6

7

8

9

9

9

10

10
11
12

Chapter 3 Programming

3-1 Recorder Setup
3-2

Alarm Settings

Chapter 4 Calibration

4-1 Pen Arm Calibration

Chapter 5 Specifications

Chapter 6 Dimensions
/ Troubleshooting

13

14

15

17

19

1

Chapter 1 Overview

1-1 General

The CT7300 is a microprocessor based circle chart recorder.
Programmablealarm options combined with "ease of setup" provide the
flexibilityrequired for multiple recording applications.

The Ink style CT7300is the first recorder to "self document" setup
configuration during initial setup and can operateusing standard 10 inch
charts. Thebattery backup provides up to 48 hours of recording in the
event of power loss, thereby providing an additional degree of protection
for customer processes. A green LED indicates battery condition, see
section 2-14.(Page 15)

The unit is powered by 115/230VAC,50/60Hz.Programmableinputs for
thermocouple types J, K, T, R, B and S as well as 4-20mA or 0-5VDCare
standard. Optional alarm relays are available and programmable for low,
high or band operation.A green LED indicates unit is recording.

A unique setup chart provides the user with an "on the spot" manual. This
setup chart will also self document the currentsetup for quick reviewby an
operator.
interface are the main benefits of the CT7300 recorder.

High accuracy, maximum flexibility, fast response and a simple user

Warning Symbol

This Symbol calls attentionto an operating procedure, practice, or
the like, which, if not correctlyperformed or adhered to, could result
in personal injury or damage to or destruction of part or all of the
product and system. Do NOT proceed beyond a warning symbol
until the indicated conditions are fully understood and met.

Use the Manual

Installers

System

Read Chapter 1, 2, 3

Read all chapters

2

1-2 CT7300 Ordering Code

Model CT7310 Dual Pen Recorder

Model CT7311 Dual Pen RecorderW/ AlarmRelayPen 1

Model CT7312 Dual Pen RecorderW/ AlarmRelayPen1&2

All Recordersare provided with mounting brackets, battery

And 1 box of charts

Spare Parts

ReplacementRed Pens P/N 7300-Red(6 / package)

ReplacementGreen Pens P/N 7300-Green(6 / package)

Charts standard P/N CT7000C-100-24 (0/100, 24hr)
100 charts / box

3

Chapter 2 Installation

Dangerous voltages capable of causingdeath aresometimes
present when wiring the instrument. Before installationor beginning
any troubleshooting procedures the power to all equipment must be
switched off and isolated. Units suspected of being at fault must be
disconnected and removed to a properlyequipped workshop for
testing and repair. Component replacement and internaladjustments
must be made by qualified personnel only.

Thisrecorder operates on 115or 230 (50-60Hz), be sureline voltage
OFFbefore connecting recorder.

This symbol represents Earth Ground connection point.

To minimize the possibility of fire or shock hazards, do not expose
this instrumentto rain or excessivemoisture.

Do not use this instrument in areas under hazardous conditions
such as excessive shock, vibration, dirt, moisture, corrosive gases or
oil. The ambient temperatureof the areasshould not exceed the maximum
rating specified in Chapter 5.

2-1 Unpacking

Upon receipt of the shipmentremove the unit from the carton and
inspect the unit for shipping damage.

If any damage due to transit, report and claimwith the carrier.
Writedown the model number, serialnumber, and date code for future
referencewhen corresponding with our service center. Theserial
number (S/N) and date code (D/C) are labeled on the box and the
bottom side of the recorder. Make sure that all items are accounted
for:

1: Battery(for batterybackup)
2: Ferrite Core
3: User's Guide
4: Chart Recorder

2-2 Mounting

The Chart Recorder can be mounted inside a panel.

4

Install both mounting clamps and insertthe case into panel cutout.
The Panel cut out is 32.3 x 32.3 cm (12.72 x 12.72 in.)

2-3 Case Location

Upon unpacking, find a suitable location to mount the recorder
before wiring power to the unit. After the recorder has been
connected to the main AC power supply,

it's holder.

Selecta location that is welllighted, free from dust, dirt or corrosive
fumes. The instrument should not be located nearany sources of
heat or be subject ot sudden or extremetemperaturechanges. It
should be mounted on a rigid support that is not subject ot
vibration. Refer to figure 6.1 for recordercase dimensions.

install the 9VDC battery in

5

2-4 Wiring Precautions

Beforewiring, verifythe label for correct model number and

•

options. Switch off the power when checking.

Caremust be takento ensurethat maximum voltagerating

•

specified on the label are not exceeded.

It is recommendedthat power of these units to be protected by

•

fuses or circuit breakersrated at the minimum valuepossible.

All units should be installedinside a suitablygrounded metal

•

enclosureto preventliveparts being accessible from human
hands and metal

All wiring must conformto appropriate standards of good practice

•

and local codes and regulations. Wiring must be suitable for
maximumvoltage, current, and temperaturerating of thesystem.

Take care not to over-tighten the terminalscrews.

•

•

Unused control terminalsshould not be used as jumper points as
they may be internallyconnected, causing damage to the unit.

Verify that the ratings of the output devices and theinputs as

•

specified in Chapter 5 are not exceeded.

Electricpower in industrial environmentscontains a certainamount

•

of noise in the form of transientvoltage and spikes. This electrical
noise can enter and adverselyaffect the operationof
microprocessor-based controls. For thisreason we strongly
recommend the use of shielded thermocouple extensionwirewhich
connects the sensorto the unit. Thiswire is a twisted-pair
construction with foil wrap and drain wire. The drain wireis to be
attached to earthground at thesensor end only.