KR20050017572A - Method for Compensating Error in Manufacturing Process of Calorimeter - Google Patents

Abstract

PURPOSE: A method of compensating for an error in a manufacturing process of a calorimeter is provided to compensate for errors generated in the calorimeter by using two comparison characteristics. CONSTITUTION: Two resistance elements corresponding to resistance values included in a resistance temperature detector at a first reference temperature are connected with a supplying part and a retrieving part. A control part reads the first reference temperature value from the supplying part and the retrieving part and stores the first reference temperature in a memory embedded in the control part. A second reference temperature value is stored with respect to a second reference temperature. The control part reads a first comparison temperature value from the supplying part and the retrieving part and stores the first comparison temperature value in the memory.

Description

Method for Compensating Error in Manufacturing Process of Calorimeter

The present invention relates to a method for correcting an error of a calorimeter generated in a manufacturing process of a calorimeter. More specifically, in the manufacturing process of the calorimeter, an error caused by the calorimeter's supply temperature sensor and the recovery unit temperature sensor, an error caused by the resistance element and the condenser element used in the circuit configuration of the calorimeter, and when the two temperature sensors are combined with the calorimeter. This method relates to a method of correcting an error occurring in a calorimeter using two comparative characteristic curves generated when the error is actually installed in a reference characteristic curve of two temperature sensors and a calorimeter.

Calorimeters measure the calories used to heat a space. The calorimeter calculates the accumulated amount by calculating the amount (V) of the heat medium passed in a certain time, the temperature difference (ΔT) between the supply side and the reflux side of the heat medium measured by the temperature sensor, and a corresponding constant (K, calorie conversion factor). Instruct.

1 is a block diagram briefly illustrating an internal configuration of a calorimeter 100 currently being used.

The calorimeter 100 includes a supply part temperature sensor 102, a recovering part temperature sensor 104, a flow rate detecting part 106, a pressure sensing part 108, a calorific value calculating part 110, a control part 120, a display part 130, and Memory 140 and the like.

The supply part temperature sensor 102 is installed in a supply pipe (not shown) to which a high temperature fluid, for example, water is supplied, and the recovery part temperature sensor 104 is a reflux tube in which the fluid supplied to the calorimeter 100 is recovered by heat exchange. It is installed in (not shown), and measures the temperature of the fluid passing through each, and transmits the temperature signal to the calorific value calculation unit 110. In addition, the flow rate detection unit 106 detects the flow rate of the fluid supplied to the calorimeter 100 to generate a pulse signal per unit volume, and the pressure detection unit 108 detects the pressure of the supplied fluid to calculate the calorie calculation unit 110. ) To send to.

The calorific value calculation unit 110 may include data regarding a water supply temperature, a recovery temperature, a supply flow rate, and a pressure detected by the supply temperature sensor 102, the recovery unit temperature sensor 104, the flow rate detection unit 106, and the pressure detection unit 108. Receive In addition, the calorific value calculation using the difference between the water supply temperature and the recovery temperature, the supply flow rate and the calorie conversion factor, the pressure calculation according to the current change of the pressure sensing unit 108, the temperature sensor fault monitoring using the upper limit value and the lower limit value of the temperature sensor In addition, the flow rate sensing unit 106 performs a function of monitoring a failure of the flow rate sensing unit using the number of pulses generated per predetermined flow rate.

The controller 120 controls the function of generating the meter reading data for charging charges for the use calories using the calorie data and the flow rate data calculated by the calorie calculating unit 110 and outputting the meter data to the display unit 130. In addition, the controller 120 also controls a function of storing the result data calculated by the calorie calculator 110 in the memory 140.

On the other hand, in the production process for producing the calorimeter 100 described in Figure 1, the operation of correcting the error occurring in the calorimeter 100 for the accurate measurement of the calories used is necessarily accompanied.

In general, an error generated in the production process of the calorimeter 100 may include errors generated by the supply part temperature sensor 102 and the recovering part temperature sensor 104, and a resistance element installed on a board inside the calorimeter 100. The error generated in the capacitor and the supply temperature sensor 102 and the recovery part temperature sensor 104 may be divided into errors generated by contact when connecting the board.

First, although the supply part temperature sensor 102 and the recovery part temperature sensor 104 use the same kind and the same precision sensor together, they cannot generate the same error in temperature measurement. In general, it is known that the error of the measurement temperature generated by the pair of supply temperature sensor 102 and the recovery temperature sensor 104 is not less than ± 0.03 ° C.

In general, the resistance element installed on the board inside the calorimeter 100 has an error in the precision range of about -1% to + 1% of the resistance value, and the capacitor has a precision of about -10% to + 10% of the capacitor value. Error in the range. Therefore, the board inside the calorimeter 100 causes an error in future temperature measurement due to the precision of the resistor and the capacitor for the configuration of the circuit integrated on the board.

Finally, when the board and the supply temperature sensor 102 and the recovery temperature sensor 104 inside the calorimeter 100 are connected to each other through a cable, the board is connected in the process of bonding the cable and the connection terminal connected to the board. The resistance caused by this causes an error in future temperature measurement.

As described above, in order to correct an error inevitably occurring in a calorimeter 100, in particular, a production process of an industrial calorimeter which requires mass production, an operator of a production site uses a method of manually measuring and correcting an error.

2 is a block diagram schematically illustrating a calorimeter error correction system 200 for correcting an error occurring in a production process of a calorimeter 100 according to the related art.

The conventional calorimeter error correction system 200 generates and displays the thermostats 210 and the thermostats 270 and 280 in which the PT100 temperature sensors 272 and 282 are contained, and pulses are displayed. It is configured to include a measuring instrument 260 and the like.

The calorimeter 210 includes a supply unit 230 to which a supply unit PT100 temperature sensor 272 is connected, a recovery unit 240 to which a recovery unit PT100 temperature sensor 282 is connected, and a control unit 250 that generally controls the calorimeter 210. And the like are formed on the calorimeter board 220. Here, the PT100 temperature sensor is a kind of platinum resistance thermometer which is a resistance temperature detector (RTD), and is a device that senses temperature by using a change in the electrical resistance value of platinum according to a temperature change. In general, the PT100 temperature sensor changes the resistance value of 0.4 kW per 1 ° C., which has the advantage of enabling temperature sensing with high stability and precision.

Referring to the process of correcting the error of the calorimeter 210 in the conventional calorimeter error correction system 200 shown in FIG.

As described above, in order to correct various errors of the produced calorimeter 210, the operator puts water of a constant temperature into the thermostats 270 and 280, and supplies PT100 connected to the supply unit 230 and the recovery unit 240. The temperature sensor 272 and the recovery part PT100 temperature sensor 282 are put in the thermostats 270 and 280, respectively. The supply and recovery units PT100 temperature sensors 272 and 282 contained in the thermostats 270 and 280 change resistance values according to the temperature of water contained in the thermostats 270 and 280, and the changed resistance values are supplied to the supply unit 230 and Transfer to the recovery unit 240.

On the other hand, the supply unit 230 and the recovery unit 240 has a resistance control element (232, 242) for adjusting the sensitivity of each PT100 temperature sensor (272 and 282) and a microprocessor although not shown in Figure 2 Doing. In addition, the supply unit 230 and the recovery unit 240 measures the temperature of the water according to the resistance values received from the respective PT100 temperature sensors 272 and 282, and transmits the measured water temperature to the controller 250. The controller 250 calculates a difference between the two temperature values received from the supply unit 230 and the recovery unit 240, and transfers the calculated temperature difference ΔT to the pulse meter 260 connected by wire. The pulse meter 260 generates and displays a pulse corresponding to the temperature difference received from the controller 250. Therefore, the operator checks the number of pulses displayed on the pulse meter 260 and checks whether the number of checked pulses has a value within an error range.

If the number of pulses measured with respect to one calorimeter 210 is out of the error range, the operator may use the PT100 temperature sensor 272 until the number of pulses in the pulse meter 260 falls within the error range to correct the error. The number of pulses is checked while changing the values of the resistance adjusting elements 232 and 242 of the sensor 282. Here, in order to change the values of the sensitivity adjusting resistor elements 232 and 242, the operator replaces the sensitivity adjusting resistor elements 232 and 242 using a soldering iron or the like.

Therefore, the method of correcting the error of the calorimeter 210 by checking the number of pulses while replacing the resistance adjusting elements 232 and 242 by hardware has a problem that it takes a lot of time since many operations are performed by hand. . In addition, since the degree of error due to the circuit elements provided in the calorimeter board 220 is different for each calorimeter 210, all calorimeters 210 produced must have an error correction operation. Therefore, if the conventional calorimeter error correction method is used, the error correction operation can be performed only on the calorimeter 210 of about several tens of months per worker, which is an obstacle to mass production of the calorimeter 210. That is, there is a disadvantage that a lot of manpower and time is required to mass produce the calorimeter 210.

In addition, since the operator directly checks the number of pulses and performs error correction while manually replacing the resistance elements according to the result of the check, the probability of error occurrence by manual operation is increased, thereby causing a problem that the defective rate of the calorimeter 210 is increased. .

In order to solve the above problems, in the manufacturing process of the calorimeter, the error caused by the supply part temperature sensor and the recovery part temperature sensor of the calorimeter, the error caused by the resistance element and the condenser element used in the circuit configuration of the calorimeter, and the two temperature sensors are combined with the calorimeter. The purpose of the present invention is to propose a method of correcting the error occurring in the calorimeter by using the reference characteristic curves of the two temperature sensors and the two comparative characteristic curves generated when the error is actually installed in the calorimeter.

To this end, the present invention is a method for correcting the error of the calorimeter generated in the manufacturing process of the calorimeter, (a) two resistance elements corresponding to the resistance value of the RTD at the first reference temperature is provided in the supply and recovery portion of the calorimeter Each being connected; (b) a control unit embedded in the calorimeter reading a first reference temperature value from the supply unit and the recovery unit and storing the first reference temperature value in an internal memory; (c) repeating step (a) and step (b) for a second reference temperature to store a second reference temperature value; (d) connecting the RTDs contained in the two thermostats set to the first reference temperature, respectively, to the supply part and the recovery part; (e) the control unit reading a first comparison temperature value in the supply unit and the recovery unit, and storing the first comparison temperature value in the memory; (f) repeating step (d) and step (e) with respect to the second reference temperature to store a second comparison temperature value; And (g) generating a reference characteristic curve and a comparative characteristic curve, and using the temperature difference between the reference characteristic curve and the comparative characteristic curve as an offset value, and setting the offset value to the measured temperature at the supply part or the recovery part. It provides a method for correcting the error of the calorimeter occurring in the manufacturing process of the calorimeter, characterized in that it comprises the step of setting to add or subtract.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

3 is a graph showing a temperature characteristic curve of a PT100 temperature sensor.

In general, the PT100 temperature sensor has a characteristic in which the resistance value increases linearly as shown in FIG. 3 depending on the temperature of the fluid (particularly water) to be measured. That is, it has a resistance value of 100 Ω in water at 0 ° C, a resistance value of 119.4 Ω in water at 50 ° C, and a resistance value of 130.89 Ω in water at 80 ° C. However, the temperature characteristic curve of the PT100 temperature sensor shown in FIG. 3 is only an ideal case, and when the PT100 temperature sensor is applied to the calorimeter, the error of the calorimeter board itself and the contact resistance generated in the process of combining the calorimeter board and the PT100 temperature sensor are shown. Error due to the error.

Thus, the shape of the temperature characteristic curve shown in FIG. 3 does not change significantly, but the temperature characteristic curve is shifted up or down. Therefore, in the present invention, the error correction operation of the calorimeter, which is an operation of maximally matching the temperature characteristic curve changed due to the error to the temperature characteristic curve shown in FIG. 3, is performed by software.

Meanwhile, in the preferred embodiment of the present invention, the PT100 temperature sensor, which is generally used as the supply and recovery temperature sensors 272 and 282, is described as an example, but the technical idea of the present invention is not limited thereto. That is, the technical idea of the present invention may be applied to various platinum resistance thermometers such as PT50, PT500, and PT1000 temperature sensors as well as PT100 temperature sensors.

4 is a block diagram schematically illustrating a reference step error correction system 400 according to an embodiment of the present invention.

The reference step error correction system 400 according to an embodiment of the present invention is a system for obtaining a reference characteristic curve using a resistance element having a resistance value according to an ideal temperature characteristic curve of an actual PT100 temperature sensor. The reference step error correction system 400 directly supplies the supply resistance element 470 and the recovery part resistance element 480 to the supply part 430 and the recovery part 440 formed on the calorimeter board 420 of the calorimeter 410, respectively. Connect.

As such, by directly connecting two resistance elements having a resistance value at a specific temperature, the error of the PT100 temperature sensor generated by the conventional PT100 temperature sensor itself can be eliminated. That is, when the reference step error correction system 400 is used, the error caused by the PT100 temperature sensor is eliminated, and the error caused by the resistance element and the condenser element used in the circuit configuration of the calorimeter and when the two temperature sensors are coupled to the calorimeter is generated. Only errors exist.

Here, it is preferable that the supply part and the recovery part resistive elements 470 and 480 use high precision elements.

The process of obtaining the reference characteristic curve in the reference step error correction system 400 is as follows. The operator who performs the error correction operation of the calorimeter 410 connects the resistance element having the ideal resistance value of the PT100 temperature sensor at the reference temperature to the supply part 430 and the recovery part 440 of the calorimeter 410, respectively. Here, the reference temperature is 50 ℃ and 80 ℃ when using the PT100 temperature sensor. Of course, the reference temperature may vary depending on the type of temperature sensor used in the calorimeter 410.

Therefore, the resistance values of the supply and recovery resistors 470 and 480 are 119.4 Ω and 130.89 Ω, which are ideal resistance values of the PT100 temperature sensor at 50 ° C and 80 ° C. First, a resistance element of 119.4 Ω is connected to the supply unit 430 and the recovery unit 440 to read a resistance value at a reference temperature of 50 ° C. Then, the operator inputs a command using the command computer 460 connected with the calorimeter 410, and the input command is transferred to the control unit of the calorimeter 410.

Accordingly, the command computer 460 is provided with a predetermined command transmission program for transmitting the command to the calorimeter 410 for the error correction operation. For example, the operator transmits a command that is driving a first command such as "R = 50" so that the calorimeter 410 can read the resistance values of the supply and recovery resistors 470 and 480 at the initial reference temperature of 50 ° C. Enter using the program.

The control unit 450 receiving the first command sends a first temperature measurement signal to the supply unit 430 and the recovery unit 440, and the supply unit 430 and the recovery unit 440 receiving the first temperature measurement signal are The temperature value is determined by receiving the resistance values from the supply and recovery unit resistors 470 and 480 and measuring the number of pulses generated by the sensitivity adjusting resistors 432 and 442. For example, if the number of generated pulses is 49, the microprocessor (not shown) built in the supply unit 430 and the recovery unit 440 counts the number of pulses to determine each temperature value.

Meanwhile, the controller 450 generates and transmits a temperature measurement signal according to a command received from the command computer 460, and corrects an error using temperature values received from the supply unit 430 and the recovery unit 440. Load the calibration program. The error correction program according to an embodiment of the present invention may be stored in the controller 450 or a predetermined ROM (not shown). The supply unit 430 and the recovery unit 440 transfer the determined temperature value to the control unit 450, and the control unit 450 displays the first reference temperature values of the received supply unit 430 and the recovery unit 440. ) Is temporarily stored in the memory 452.

The operator who confirmed the first reference temperature value in the first step through the display unit 454, 130.89 Ω which is the ideal resistance value of the PT100 temperature sensor at 80 ℃ to measure the second reference temperature value at 80 ℃, the second reference temperature Is connected to the supply unit 430 and the recovery unit 440. The operator then enters a second command, such as " R = 80, " using the command computer 460, and delivers it to the calorimeter 410. Through the same process as described above, the control unit 450 grasps the second reference temperature values from the supply unit 430 and the recovery unit 440, temporarily stores them in the memory 452, and displays them through the display unit 454.

On the other hand, the control unit 450 uses the error correction program that is being driven based on the first and second reference temperature values of the supply unit 430 and the recovery unit 440 obtained in the first and second stages. The curve is generated and temporarily stored in the memory 452. Here, in order to more accurately correct the error correction operation of the calorimeter 410, more reference temperatures may be set within the limit that the speed of the error correction operation is guaranteed. The operator who generates the reference characteristic curve using the resistance element performs the task of generating the comparative characteristic curve.

5 is a block diagram schematically illustrating a comparison step error correction system 500 according to an embodiment of the present invention.

Comparing step error correction system 500 according to an embodiment of the present invention is a system for obtaining a comparison characteristic curve to be compared with the reference characteristic curve generated in FIG. 4 by connecting the actual PT100 temperature sensor to the calorimeter 410. . In the comparison step error correction system 500, the supply unit 430 and the recovery unit 440 formed on the calorimeter board 420 of the calorimeter 410 may supply the supply unit PT100 temperature sensor 470 and the recovery unit PT100 temperature sensor 480. Connect.

The operator puts the supply and recovery PT100 temperature sensors 470 and 480 into the thermostats 510 and 520 at 50 ° C. which is the first reference temperature in FIG. 4. The supply unit and the recovery unit PT100 temperature sensors 470 and 480 placed in the thermostats 510 and 520 have a constant resistance value. The operator inputs a first command such as “P = 50” using the command computer 460 to obtain a comparison characteristic curve, and the input first command is transmitted to the controller 450. The controller 450 obtains the first comparison temperature value through the same process as described in the fourth process, outputs it to the display unit 454, and temporarily stores the first comparison temperature value in the memory 452.

After obtaining the first comparison temperature, the operator changes the temperature of the water contained in the thermostats 510 and 520 to 80 ° C., which is the second reference temperature, and obtains the second comparison temperature through a similar process as in the first step. The controller 450 generates a comparison characteristic curve using an error correction program that is being driven based on the obtained first comparison temperature value and the second comparison temperature value. Here, the comparative characteristic curves generated by the controller 450 are generated for the supply unit PT100 temperature sensor 512 and for the recovery unit PT100 temperature sensor 522, respectively.

On the other hand, since the comparison step error correction system 500 connects the actual PT100 temperature sensor to the calorimeter 410, the error caused by the PT100 temperature sensor, the resistance caused by the resistance element and the condenser element used in the circuit configuration of the calorimeter, and the two temperature sensors. All errors that occur when you combine with the calorimeter will be present. Therefore, the difference between the comparison characteristic curve generated by the comparison step error correction system 500 and the reference characteristic curve generated by the reference step error correction system 400 becomes an error caused by the PT100 temperature sensor.

6 is a graph showing a reference characteristic curve and a comparative characteristic curve generated by the calorimeter 410 according to an embodiment of the present invention.

6, the horizontal axis represents a temperature value, the vertical axis represents a resistance value, and two comparative characteristic curves are displayed around the reference characteristic curve. In addition, since the PT100 temperature sensor has a characteristic that the resistance value changes linearly with respect to a change in temperature, as shown in FIG. 6, the comparative characteristic curve also has a shape similar to the reference characteristic curve, but has only a vertically shifted shape. do.

Otherwise, if the comparison characteristic curve has a value that bounces up or down from one or more reference temperature values differently from the shape of the reference characteristic curve, it is either because of the problem with the calorimeter board itself or because the normal measurement was not made during the measurement of the comparison temperature value. . Therefore, in this case, it would be desirable to test the calorimeter board or retry the measurement of the comparative temperature value.

Meanwhile, as described in FIG. 5, since the difference between the comparison characteristic curve and the reference characteristic curve is an error of the PT100 temperature sensor, the reference special curve corresponding to the resistance value of the comparison special curve at the point of reference temperature 50 ℃ or 80 ℃ of FIG. The difference is corrected by setting or subtracting the difference between the temperature and the reference temperature as an offset value.

In more detail with reference to FIG. 6, when the reference temperature is assumed to be 50 ° C., the comparative characteristic curve A has a resistance value of A Ω at 50 ° C. FIG. Therefore, correction is performed by setting (50-A) ° C, which is the difference between A ° C, which is the temperature value of the reference characteristic curve corresponding to the resistance value of AΩ, and 50 ° C, which is the reference temperature, to be added as an offset value. For example, in FIG. 5, when the supply PT100 temperature sensor 512 contained in the thermostat 510 of 50 ° C. has a resistance value of A Ω, the actual temperature measured by the supply 430 is A ° C. lower than 50 ° C. Performing a correction that adds (50-A) ° C. will correct the error by the supply PT100 temperature sensor 512.

On the other hand, the comparative characteristic curve B at the reference temperature of 50 ° C has a resistance value of BΩ at 50 ° C. Therefore, when the correction is performed by setting (B-50) ° C, which is the difference between B ° C of the reference characteristic curve corresponding to the resistance value of BΩ and 50 ° C, which is the reference temperature, as a offset value, the correction is performed by the PT100 temperature sensor. The error will be corrected.

That is, if the comparison characteristic curve has a temperature value larger than the reference characteristic curve, correction is performed to subtract the offset value. If the comparison characteristic curve has a temperature value smaller than the reference characteristic curve, correction is performed to add an offset value to correct the error. do.

On the other hand, the error correction in the PT100 temperature sensor according to an embodiment of the present invention is automatically performed by an error correction program mounted on the calorimeter 450. In addition, when there are a plurality of reference temperatures, it may be desirable to correct the error as the final offset value from the average value of the offset values at each reference temperature.

On the other hand, in the embodiment of the present invention has been described a method for correcting the error of the calorimeter by generating a reference characteristic curve and a comparative characteristic curve using the measured temperature of the PT100 temperature sensor measured at least two or more reference temperatures, The reference temperature alone can also correct the calorimeter's error. However, the method of compensating the error of the calorimeter using a single reference temperature has the advantage of performing the error calibration of the calorimeter more quickly, but it is more accurate than the method of compensating the error using at least two reference temperatures. There is a disadvantage that the error correction may not be made.

That is, since there is no data to be compared with only one reference temperature value measured in the reference step and one comparison temperature value measured in the comparison step, there is a problem with the calorimeter board itself. It is not possible to determine if a problem has occurred. Therefore, if the technical idea of the present invention is applied to one specific temperature, even if the error caused by the PT100 temperature sensor can be corrected, the calorimeter board may not be able to correct an error due to a mistake or an error in the temperature measurement task. have.

As described above, in the mass production stage of the conventional industrial calorimeter, a problem such as a large amount of time and manpower is required because the operator manually performs the error correction operation of the calorimeter, but according to the present invention, the software corrects the error. The advantage is that the error correction can be done quickly and accurately.

1 is a block diagram briefly showing an internal configuration of a calorimeter currently being used;

2 is a block diagram schematically illustrating a calorimeter error correction system for correcting an error occurring in a calorimeter production process according to the prior art;

3 is a graph showing a temperature characteristic curve of a PT100 temperature sensor;

4 is a block diagram schematically illustrating a reference step error correction system according to an embodiment of the present invention;

5 is a block diagram schematically illustrating a comparison step error correction system according to an embodiment of the present invention;

6 is a graph showing a reference characteristic curve and a comparative characteristic curve generated by a calorimeter according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100, 210, 410: calorimeter 102: supply temperature sensor

104: recovery unit temperature sensor 106: flow rate detection unit

108: pressure detection unit 110: calorie calculation unit

120, 250, 450: control unit 130, 454: display unit

140, 452: memory 220, 420: calorimeter board

230, 430: supply part 240, 440: recovery part

260: pulse measuring instrument 270, 280, 510, 520: thermostat

272, 512: supply unit PT100 temperature sensor 282, 522: recovery unit PT100 temperature sensor

460: command computer 470: supply resistance element

480: recovery part resistance element

Claims (10)

As a method of correcting the error of the calorimeter generated in the manufacturing process of the calorimeter, (a) connecting two resistance elements corresponding to resistance values of the RTD at the first reference temperature, respectively, to the supply and recovery portions of the calorimeter; (b) a control unit embedded in the calorimeter reading a first reference temperature value from the supply unit and the recovery unit and storing the first reference temperature value in an internal memory; (c) repeating step (a) and step (b) for a second reference temperature to store a second reference temperature value; (d) connecting the RTDs contained in the two thermostats set to the first reference temperature, respectively, to the supply part and the recovery part; (e) the control unit reading a first comparison temperature value in the supply unit and the recovery unit, and storing the first comparison temperature value in the memory; (f) repeating step (d) and step (e) with respect to the second reference temperature to store a second comparison temperature value; And (g) generating a reference characteristic curve and a comparative characteristic curve, and subtracting the offset value to the measured temperature at the supply part or the recovery part by using a temperature difference between the reference characteristic curve and the comparative characteristic curve as an offset value; Steps to set up Method for correcting the error of the calorimeter occurring in the manufacturing process of the calorimeter, characterized in that it comprises a. The method of claim 1, The RTD is a platinum RTD including at least one temperature sensor of a PT50 Ω temperature sensor, a PT100 Ω temperature sensor, a PT500 Ω temperature sensor, and a PT1000 Ω temperature sensor. How to calibrate. The method of claim 1, The controller loads an error correction program stored in a ROM embedded in the calorimeter to compare the first reference temperature value, the second reference temperature value, the first comparison temperature value, and the second comparison value. A method of correcting an error of a calorimeter occurring in a manufacturing process of a calorimeter, characterized by reading a temperature value.  The method according to claim 1 or 3, The error correction program generates the reference characteristic curve by connecting the first reference temperature value and the second reference temperature value on a temperature-resistance coordinate configured as a resistance value to a temperature value, and generates the reference characteristic curve on the temperature-resistance coordinate. Generating a comparative characteristic curve by connecting a first comparative temperature value and the second comparative temperature value to correct an error of a calorimeter generated in a manufacturing process of a calorimeter. The method of claim 1, The first reference temperature value and the second reference temperature value are temperature values measured by the supply part and the recovery part when the first reference temperature and the second reference temperature are measured in the step (b), and the first comparison temperature The value and the second comparison temperature value is a temperature value measured by the supply unit and the recovery unit in the measurement of the first reference temperature and the second reference temperature in the step (e) generated in the manufacturing process of the calorimeter How to compensate for errors in the calorimeter. The method of claim 1, wherein in step (g) And the comparative characteristic curves are generated for the supply part and the recovery part, respectively. The method of claim 1, wherein in step (g) The offset value corresponds to a reference temperature value of the reference special curve corresponding to a comparison resistance value of the comparison characteristic curve at the first reference temperature or the second reference temperature and the first reference temperature or the second reference temperature. Method for correcting the error of the calorimeter occurring in the manufacturing process of the calorimeter, characterized in that the difference value of. The method of claim 7, wherein And the offset value is set to an average value of two difference values between the first reference temperature and the second reference temperature. The method according to claim 3 or 7, When the offset value has a positive value, the error correction program performs a correction to set the offset value to the measured temperature value in the supply part or the recovery part, and sets the offset value. In the case of having a negative (-) value, a correction is performed to set the offset value to be subtracted from the measured temperature value in the supply part or the recovery part. How to calibrate. The method of claim 1, Two or more reference temperatures are used for the error correction operation of the calorimeter, and the reference and reference temperature values are measured and stored for each reference temperature, respectively, on the temperature-resistance coordinates configured as resistance values for the temperature values. Connecting the reference temperature value and each of the comparison temperature values to generate the reference characteristic curve and the comparison characteristic curve. A method of correcting an error of a calorimeter occurring in a manufacturing process of a calorimeter.