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Because the M.O.L.E.® Thermal Profiler is made with precision components with high temperature stability and tight tolerances, the analog-to-digital converters remains stable for years. High quality components together with software algorithms based on the ITS-90* standard for Type K thermocouples have been provided to yield the specified accuracy and long-term stability. Each unit has been tested at the factory before it is shipped.

 

Good thermal quality programs require periodic calibration to show the Thermal Profiler continues to remain in calibration using a temperature standard.

 

* ITS-90 - International Temperature Scale of 1990

 

Definitions:

•Calibration: The name (noun) of the procedure that determines the accuracy of a measurement device by comparing it to a known standard.

•Calibrate: To perform (verb) the procedure of calibration, which involves measuring against a standard. It does not include adjustment, though adjustment may follow calibration if needed.

•Adjustment (Calibration Adjustment): The procedure of modifying the device to bring its measurements closer to the standard.

•Certificate of Calibration (COC): The resulting documentation issued by a laboratory that states the device’s accuracy, the instruments used and conditions while the procedure was performed.

oAccredited COC is Issued by a laboratory that follows standard practices has been assessed and accredited by an independent accreditation body.

oUnaccredited COC is issued by a laboratory that may follow standard practices but has not been formally accredited by in independent body.

 

Equipment Required:

1.A Thermocouple Standard which may be either:

oThermocouple Simulator* with accuracy ±0.1°C and output impedance ≤ 0.1Ω

oVoltage Reference with accuracy ±3µV and output impedance ≤ 0.1Ω, Ice-point Cell with accuracy ±1°C or better and TRP

2.Thermocouple harness (special limits of error)

•ECD Item #E65-0509-26

3.Foam insulator (to wrap around the M.O.L.E. Thermal Profiler thermocouple connections and provide access to the ON/OFF and Record buttons)

4.M.O.L.E. MAP Software (installed on PC)

5.Optional – MAP Machine and KPI Template files

oMOLECalibration.xmr

oMOLECalibrationTemplate.tpf

 

* ITS-90 - International Temperature Scale of 1990

 

Setup

The equipment you use for the calibration determines the setup procedure.

 

Voltage Reference, Ice-point Cell and TRP connection:

Thermocouple Simulator connection:

Procedure: Calibration Verification

1.Connect the V-M.O.L.E.™ 2 Thermal Profiler to the thermocouple harness ECD Item #E65-0509-26.

2.Wrap the thermocouple connection of the M.O.L.E. with foam insulator.

3.Turn ON the M.O.L.E. by pressing the ON/OFF button.

4.Start M.O.L.E. MAP and set M.O.L.E. recording parameters as follows:

oLog Interval: 1 sec

oAll channels ON and type K

5.Set the Thermocouple Standard to -100°C (-3.554mV). Allow at least 1 minute for thermal stabilization.

6.Start M.O.L.E. recording, and allow to log for at least 30 seconds at -100°C or user determined value.

7.Change the Thermocouple Standard to 100°C (4.096mV) or user determined value, and allow it to continue logging for at least 30 more seconds.

8.Change the Thermocouple Standard to 250°C (10.153mV) or user determined value, and allow it to continue logging for at least 30 more seconds.

9.Change the Thermocouple Standard to 1000°C (41.276mV) or user determined value, and allow it to continue logging for at least 30 more seconds.

10.Stop M.O.L.E. recording.

11.Download the data run from the M.O.L.E. to the M.O.L.E. MAP Software.

12.Confirm the M.O.L.E. recorded the temperatures ±1°C from the Thermocouple Standard (guard-band using your standard’s accuracy, and or uncertainty as you prefer).

oIf within spec, Calibration Verification complete.

oIf out of spec, Perform Calibration Adjustment procedure.

Procedure: Calibration Adjustment

1.Connect the V-M.O.L.E.™ 2 Thermal Profiler to the thermocouple harness ECD Item #E65-0509-26.

2.Wrap the thermocouple connection of the M.O.L.E. with foam insulator.

3.Turn ON the M.O.L.E. by pressing the ON/OFF button.

4.Set the Thermocouple Standard to 0°C (0.000mV). Allow at least 1 minute for thermal stabilization.

5.Locate the M.O.L.E. MAP software desktop shortcut and create a copy. Add the following to the Target: “ –calibrate” which includes a space after the …exe.

6.Start the M.O.L.E. MAP Software and select Setup Instrument from the M.O.L.E. menu.

7.Press the Start button to begin.

8.Follow the instructions on each dialog when prompted.

9.Success or failure will be prompted at the end of each step.

oIf successful Calibration Adjustment complete. Repeat the Calibration Verification to confirm.

oIf not, confirm again that ALL channels are reading at or near the current standard’s setting, checking for bad connections, and repeat the Calibration Adjustment procedure.