Omega Engineering CL3512A User manual
CL3512ACL3512A
CL3512ACL3512A
CL3512A
Digital Thermometer & CalibratorDigital Thermometer & Calibrator
Digital Thermometer & CalibratorDigital Thermometer & Calibrator
Digital Thermometer & Calibrator
OMEGAnetSM On-Line Service
http://www.omega.com Internet e-mail
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omega.comTM
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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.
Table of contents
1.0 Introduction
1.1 Safety Information
1.2 Unpacking
2.0 Operation Procedure
2.1 Unit Drawing
2.2 Description of Buttons and Switches
2.3 Read Mode Procedure
2.4 Source Mode Procedure
3.0 Operator Maintenance
4.0 Specifications
5.0 Calibration Procedure
1
1.0 Introduction
The OMEGA®CL3512A calibrator/thermometer is two meters in one. The
CL3512AsimulatestypeJ/K/T/Ethermocouplesignals.Eachsignalisadjustable
by using the coarse and fine dials. The CL3512A can also be used as a dual
type J/K/T/E thermocouple input thermometer. Features include a large 3½
digit display with backlighting and display selections of HOLD, °C/°F, and
0.1/1°.
ThesourcemodeoftheCL3512Asimulatesthethermocoupleoutputtocheck
theoperationofathermocouplemeterandmakeroughcalibrationadjustments.
A more accurate calibrator would be required for calibration of thermocouple
meters to specify tolerances.
1.1 Safety Information
It is recommended that you read the safety and operation instructions before
using the thermometer.
WARNING
To avoid electrical shock, do not use this instrument when working
voltages at the measurement surface over 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
1.2 Unpacking
Remove the packing list and verify that all equipment has been received. If
thereareanyquestionsabouttheshipment,pleasecalltheOMEGACustomer
Service Department.
Upon receipt of shipment, inspect the container and equipment for any signs
of damage. Immediately report any damage to the shipping agent.
NOTE
The carrier will not honor any claims unless all shipping
material is saved for their examination. After examining and
removingcontents,savethepackingmaterialandcartoninthe
event reshipment is necessary.
The following is supplied in the box:
• CL3512A
• Rubber boot
• 2 K beaded wire thermocouples
• K calibration cable
• 9 volt battery
• Operator's manual
2.0 Operation Proceedure
2.1 Drawing of Unit
3
Actual Dimensions: 195mm(H) x 92mm(W) x 53mm(D)
4
2.2 Descriptions of Buttons and Switches
/Buttons
Temperature is displayed in either degrees Celsius(°C) or degrees
Fahrenheit(°F).Whenthethermometeristurnedon,itissettothetemperature
scalethatwasinusewhenthethermometerwaslastturnedoff.Tochangethe
temperature scale, press the °C or °F key.
Button
Press " " button to toggle the on and off backlight. The backlight will switch-
off automatically after 30 seconds.
Button (HOLD Mode)
PresstheHOLDkey to enter the Data Holdmode,the"HOLD" annunciator is
displayed. When HOLD mode is selected, the thermometer will hold the
present reading and stop all further measurements.
PressingtheHOLDkeyagainwillcancelHOLDmodecausingthe thermometer
to resume taking measurements.
Button (K/J/T/E Input Thermocouple Type Selection)
TheTYPEkeyallowsforselectionofJ,K,EorTthermocoupletypesaseither
the input or simulated output. To select thermocouple type press type key
once. Unit will briefly show 1888 and beep and then the type of thermocouple
selectedwillbeindicatedonthelefthandsideofthedisplay.Continuepressing
the type key to step through the thermocouple types until desired type is
indicated.
5
/ / Input Selections
The input selection indicates which input is selected; T1 thermocouple, T2
thermocoupleorthedifferencebetweenthetwothermocouples(T1-T2).When
thethermometeris turnedon,it is settothe temperatureinputthat was inuse
when the thermometer was last turned off.
Selector Switch
The circular selector switch is used to turn the unit off (!) or to select Reading
Mode (Input) or Simulation Mode (Output). There are nine selector switch
positions under output which provide rough adjustment of the simulated output.
Adjust
CourseandfineadjustmentDialsareusedinSimulationModetoallowaparticular
simulated temperature to be selected once the output has been adjusted close to
the desired temperature using the selector switch.
6
2.3 Read Mode Proceedure
1. Plug Thermocouple Sensor into input T1 and/or T2.
2. Turn selector switch to Input.
3. Select proper thermocouple type (J, K, T or E) using type button.
4. Press T1 button to read thermocouple connected to input T1.
Press T2 button to read thermocouple connected to input T2.
Press T1-T2 if difference between T1 and T2 is to be read.
5. To Hold reading press HOLD button. To resume making measurements
press HOLD again.
Note: Unit will display -OL if input is out of range or thermocouple is
broken or not connected to proper input.
To save battery life, CL3512A will turn off automatically if no is key is
pressed for 70 minutes.
7
2.4 Source Mode Procedure (Calibration Simulation)
1. Turn CL3512A on by turning selector switch to any one of the output
selector positions.
2. Press T1 button.
3. Select thermocouple type (J, K, T or E) using type button.
Select °C or °F using °C or °F buttons.
4. Plug proper type of thermocouple wire into either one of the two output
connectors. (SMP male connector required)
5. Attach the other end of the thermocouple wire to the instrument being
tested/calibrated.
6. Move the output range switch to the temperature value close to the
desired simulated value.
Note: There are 9 temperature range switch positions arranged from left
to right representing low to high temperatures.
The display will read -OL if the output voltage for the meter is
higher than the maximum voltage for that particular thermocouple
type. For type T this will be in the highest 4 positions, type K in
the highest 3 positions, type J in the highest 2 positions, and type
E in the highest position only.
7. Adjust course and/or fine adjustment dial until desired temperature is
displayed on CL3512A.
8. Instrument under test should read same temperature as CL3512A. If not
adjust instrument under test or have recalibrated.
9. Repeat steps 6-8 at different temperatures as needed.
Table of contents
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