Digital Temperature Controller Reference Manual

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Figure 4-2 Channel Input Card STEP 4: INSTALLATION AND CALIBRATION Measure the ambient temperature around the point at which the thermocouple inputs are shorted. Adjust R23 so that the displayed reading is equal to the measured ambient temperature. STEP 5: Apply an input voltage to thermocouple input 1 corresponding to 1300 oC for a PtRh 6%, 10% and 13% thermocouple or 1100 oC for a Platinel II or type K thermocouple. For type B an exception has to made. Because of the less voltage under 400 0C, the adjustment for 0 can not be done by ambient temperature, but needs to be done by 400 0C. DIGITAL TEMPERATURE CONTROLLER REFERENCE MANUAL 4-4
NOTE INSTALLATION AND CALIBRATION Make sure any reference to calibrated paddle thermocouples has been removed from the DTC configuration. Failure to do so will results in false adjustments and incorrect calibration. The required input voltage dependents on the type of thermocouple and the ambient temperature around the point at which the input voltage is connected. The input voltage in the following table gives the millivolts at calibration temperatures at different ambient temperatures: Ambient <strong>Temperature</strong> Millivolt at calibration temperature at different ambient temperartures 1100.000 1300.000 1300.000 1300.000 400.000 1100.000 K R S B B PT2 0 45.119 14.629 13.159 7.848 0.787 45.354 18 44.401 14.529 13.058 7.851 0.790 19 44.361 14.524 13.052 7.851 0.790 20 44.321 14.518 13.046 7.851 0.790 21 44.281 14.512 13.040 7.851 0.790 22 44.240 14.506 13.034 7.851 0.790 23 44.200 14.500 13.028 7.851 0.790 24 44.159 14.494 13.022 7.851 0.790 25 44.119 14.488 13.016 7.850 0.789 The ambient temperature value can be obtained from standard tables. In the following table the millivolt at different ambient temperatures are given. These are used to calculate the millivolts at calibration temperature in the previous table. Ambient <strong>Temperature</strong> Millivolt at different ambient temperatures K R S B PT2 0 0 0.000 0.000 0.000 18 0.718 0.100 0.101 -0.003 19 0.758 0.105 0.107 -0.003 20 0.798 0.111 0.113 -0.003 21 0.838 0.117 0.119 -0.003 22 0.879 0.123 0.125 -0.003 23 0.919 0.129 0.131 -0.003 24 0.960 0.135 0.137 -0.003 25 1.000 0.141 0.143 -0.002 DIGITAL TEMPERATURE CONTROLLER REFERENCE MANUAL 4-5
Page 1 and 2: Digital Temperature Controller Refe
Page 3 and 4: Table of Contents TABLE OF CONTENTS
Page 5 and 6: List of figures LIST OF FIGURES Fig
Page 7 and 8: HIGH ACCURACY THERMOCOUPLE CONTROL
Page 9 and 10: 1.4 Technical Specifications MAX. N
Page 11 and 12: 2.Technical Description 2.1 Introdu
Page 13 and 14: TECHNICAL DESCRIPTION Communication
Page 15 and 16: TECHNICAL DESCRIPTION A maximum of
Page 17 and 18: 2.4.1.2 Spike integral block TECHNI
Page 19 and 20: 3.DTC Configuration 3.1 Introductio
Page 21 and 22: 3.3 Conveyer furnaces DTC CONFIGURA
Page 23 and 24: 4.Installation and Calibration 4.1
Page 25: STEP 1: INSTALLATION AND CALIBRATIO
Page 29 and 30: 4.3 Repair INSTALLATION AND CALIBRA

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