Omega CL3512 User manual

OMEGA
CL3512
Digital Thermometer & Calibrator

OMEGAnetSM On-Line Service
http://www.omega.com
Internet e-mail
[email protected]
Servicing North America:
USA: ISO 9001 Certified Canada:
One Omega Drive, Box 4047 976 Bergar
Stamford, CT 06907-0047 Laval (Quebec) H7L5A1
Tel: [phone] Tel: [phone]
FAX: [phone] FAX: [phone]
e-mail: [email protected] e-mail: [email protected]
omega.com
TM
For immediate technical or application assistance:
USA and Canada: Mexico and Latin America:
Sales Service: 1-800-826-6342 / 1-800-TC-OMEGASM Tel: (95) 800-TC-OMEGASM
Customer Service: 1-800-622-2378 / 1-800-622-BESTSM FAX: [phone]
Engineering Service: 1-800-872-9436 / 1-800-USA-WHENSM En Español: [phone]
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA e-mail: [email protected]
Servicing Europe:
Benelux: Germany/Austria:
Postbus 8034, 1180 LA Amstelveen, Daimlerstrasse 26, D-75392
The Netherlands Deckenpfronn, Germany
Tel: [phone] FAX: [phone] Tel: [phone] FAX: [phone]
Toll Free in Benelux: 06 0993344 Toll Free in Germany: 0800 82 66342
e-mail: [email protected] e-mail: [email protected]
Czech Republic: United Kingdom: ISO 9002 Certified
ul. Rude armady 1868, 733 01 Karvina- One Omega Drive
Hranice, Czech Repubic Riverbend Technology Centre Northbank, Irlam,
Tel: [phone] FAX: [phone] Manchester, M44 5EX, England
e-mail: [email protected] Tel: [phone] FAX: [phone]
France:
9, rue Denis Papin, 78190 Trappes Toll Free in England: 0800-488-488
Tel: [phone] FAX: [phone] e-mail: [email protected]
Toll Free in France: 0800-4-06342
e-mail: [email protected]
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, patient connected application.

1
INTRODUCTION
This instrument is a portable 3½ digit, compact-sized digital thermometer
designed to use external K-type thermocouple as temperature sensor. Tem-
perature indication follows Reference Temperature/Voltage Tables (N.I.S.T.
Monograph 175 Revised to ITS-90) for K-type thermocouples.
SAFETY INFORMATION
Itisrecommendedthatyoureadthesafetyandoperationinstructionsbefore
using the thermometer.
The symbol on the instrument indicates that the operator must refer to an
explanation in this manual.
WARNING
To avoid electrical shock, do not use this instrument when voltages at the
measurement surface exceed 24V AC or DC.
WARNING
To avoid damage or burns, do not make temperature measurement in
microwave ovens.
CAUTION
Repeated sharp flexing can break the thermocouple leads. To prolong
lead life, avoid sharp bends in the leads, especially near the connector.

2
SPECIFICATIONS
ELECTRICAL
Temperature Scale: Celsius or Fahrenheit user-selectable
Measurement Range: -40°C to 1350°C, (-40°F to 2000°F)
Calibration Range: -200°C to 1372°C, (-328°F to 2502°F)
Resolution: 1°C or 1°F, 0.1°C or 0.1°F
Accuracy:Accuracyisspecifiedforoperatingtemperaturesovertherangeof
18°C to 28°C (64°F to 82°F), for 1 year, not including thermocouple error.
±(0.1% rdg + 1°C) on -40°C to 1350°C
±(0.1% rdg + 2°F) on -40°F to 2000°F
Temperature Coefficient: 0.1 times the applicable accuracy specification
per°Cfrom0°Cto18°Cand28°Cto50°C(32°Fto64°Fand82°Fto122°F).
Input Protection: 24V dc or 24V ac rms maximum input voltage on any
combination of input pins.
Reading Rate: 2.5 times per second.
InputConnector:Acceptsstandardminiaturethermocoupleconnectors(flat
blades spaced 7.9mm, center to center).

ENVIRONMENTAL
Ambient Operating Ranges: 0°C to 50°C (32°F to 122°F) <80% R.H.
Storage Temperature: -20°C to 60°C (-4°F to 140°F) <70% R.H.
GENERAL
Display: 3½ digit liquid crystal display (LCD) with maximum reading of 1999
Battery: Standard 9V battery.
Battery Life: 200 hours typical.
Dimensions: 190.7mm(H) x 90mm(W) x 53.4mm(D).
Weight: 440g.
Supplied Probe: 4 foot type "K" thermocouple bead probe (teflon tape
insulated). Maximum insulation temperature 260°C (500°F). Probe accu-
racy±2.2°Cor±0.75%ofreading(whicheverisgreater)from0°Cto800°C.
3

4
OPERATING INSTRUCTIONS
Function Switch
The function switch limited to rotate in 180º range, the overlay OUTPUT ºF
refer to scale of the OUTPUT ºC only.
Selecting the Temperature Scale
Readings are displayed in either degrees Celsius(°C) or degrees
Fahrenheit(°F).Whenthethermometeristurnedon,itissettothetemperature
scalethatwasinusewhenthethermometerwaslastturnedoff.Tochangethe
temperature scale, press the "°C/°F"key.
Selecting the Display Resolution
The thermometer allows two choices of resolution:
High resolution: 0.1°C or 0.1°F
Low resolution: 1.0°C or 1.0°F
Toselectthealternatedisplayresolution,pressthecorresponding"0.1°/1°"
key.
Back-Light and Data-Hold Switch ( >2sec),( H ):
PressthisbuttonbrieflytoactivateDATA-HOLDmode.The"H"annunciator
is displayed.
Press this button for 2 seconds to turn the Back-Light on. As this also
activates the DATA-HOLD mode, briefly press the button to return to normal
display. To turn the Back-Light off press again for 2 seconds.

5
MAX Mode
Pressing the Max key to enter the MAX mode. The thermometer then
recordsandupdatesthemaximumabsolutevaluesandtheMAXannunciator
appearsonthedisplay.PressingtheMAXkeyagaintoexittheMAXrecording
mode.
T1 , T2 Temperature Measurement
1. The function switch indicates which input is selected for display; T1
thermocouple, T2 thermocouple.
2. Connect a type K thermocouple to the jack on the instrument. Place the
probeorthermocoupletiponorinthematerialtobemeasuredandtakethe
temperature reading directly from the display.
Thermocouple Calibration
1.Connect the proper K-type thermocouple wire and miniature male SMP
connector to the CL3512 output.
2.Connect the other end of the thermocouple wire to the instrument to be
calibrated.
3.Using the range switch and the COARSE / FINE adjust knobs set the
CL3512 to the output required as read on the LCD.
4.If output over -40°C to 1350°C ( -40°F to 2000°F ) range, Please refer to
Other Type Thermocouple Calibration.

6
Other Type Thermocouple Calibration
1. Connect the two proper thermocouple wires and miniature male SMP
connector to the CL3512 output.
2. Connect the other end of one thermocouple wire to the instrument to be
calibrated and other end of one thermocouple wire to the monitoring
reference thermometer.
3. Using the range switch and the COARSE / FINE adjust knobs set the
CL3512 to the output required as read on the indicating thermometer.

7
OPERATOR MAINTENANCE
WARNING
To avoid possible electrical shock, disconnect the thermocouple
connectors from the thermometer before removing the cover.
Battery Replacement
Power is supplied by a 9 volt "transistor" battery. The " " appears on the
LCDdisplaywhenreplacementisneeded.Toreplacethebattery,removethe
two screws from the back of the meter and lift off the battery cover. Remove
the battery from battery contacts.

WARRANTY / DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months
from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal one (1) year product
warranty tocoverhandlingandshipping time.Thisensuresthat OMEGA'scustomers receivemaximumcoverage oneach product.If
the unit should malfunction, it must be returned to the factory for evaluation.OMEGA's Customer Service Department will issue an
Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to
be defective it will be repaired or replaced at no charge.OMEGA'sWARRANTY does not apply to defects resulting from any action
of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair,
orunauthorized modification.ThisWARRANTY isVOIDif the unitshowsevidenceof havingbeen tampered withor showsevidence
of being damaged as a result of excessive corrosion;or current, heat moisture or vibration; improper specification;misapplication;
misuse or other operating conditions outside of OMEGA's control.Components which wear are not warranted, including but not
limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products.However,OMEGA neither assumes responsibility
for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance
with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it
will be as specified and free of defects.OMEGA MAKES NO OTHERWARRANTIES OR REPRESENTATIONS OF ANY KIND
WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY
WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.
LIMITATION OF LIABILITY:The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with
respect to this order, whether based on contract,warranty, negligence, indemnification, strict liability or otherwise, shall
not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used:(1) as a "Basic Component" under 10
CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any
Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way,
OMEGA assumes no responsibility as set forth in our basicWARRANTY / DISCLAIMER language, and additionally, purchaser will
indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in
such a manner.
RETURN REQUESTS / INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY
PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA'S
CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS).The assigned AR number should then
be marked on the outside of the return package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.
FOR WARRANTY RETURNS, please have the following
information available BEFORE contacting OMEGA:
1. P.O. number under which the product was PURCHASED.
2. Model and serial number of the product under warranty, and
3. Repair instructions and/or specific problems relative to the
product.
FOR NON-WARRANTY REPAIRS, consult OMEGA for
current repair charges.Have the following information
available BEFORE contacting OMEGA:
1. P.O. number to cover the COST of the repair.
2. Model and serial number of product , and
3. Repair instructions and/or specific problems relative to the
product.
OMEGA's policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest
in technology and engineering. OMEGA is a registered trademark of OMEGA ENGINEERING, INC.© Copyright 2000 OMEGA ENGINEERING,
INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or
machine-readable from, in whole or in part, without prior written consent of OMEGA ENGINEERING, INC.

Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA...Of Course!
TEMPERATURE
þThermocouple, RTD & Thermistor
Probes, Connectors, Panels & Assemblies
þWire: Thermocouple, RTD & Thermistor
þCalibrators & Ice Point References
þRecorders, Controllers & Process Monitors
þInfrared Pyrometers
PRESSURE/STRAIN AND FORCE
þTransducers & Strain Gauges
þLoad Cells & Pressure Gauges
þDisplacement Transducers
þInstrumentation & Accessories
FLOW/LEVEL
þRotameters, Gas Mass Flowmeters
& Flow Computers
þAir Velocity Indicators
þTurbine/Paddlewheel Systems
þTotalizers & Batch Controllers
pH/CONDUCTIVITY
þpH Electrodes, Testers & Accessories
þBenchtop/Laboratory Meters
þControllers, Calibrators, Simulators
& Pumps
þIndustrial pH & Conductivity Equipment
DATA ACQUISITION
þData Acquisition &
Engineering Software
þCommunications-Based
Acquisition Systems
þPlug-in Cards for Apple, IBM
& Compatibles
þDatalogging Systems
þRecorders, Printers & Plotters
HEATERS
þHeating Cable
þCartridge & Strip Heaters
þImmersion & Band Heaters
þFlexible Heaters
þLaboratory Heaters
ENVIRONMENTAL
MONITORING AND CONTROL
þMetering & Control Instrumentation
þRefractometers
þPumps & Tubing
þAir, Soil & Water Monitors
þIndustrial Water & Wastewater
Treatment
þpH, Conductivity & Dissolved Oxygen
Instruments
M-3528/0400