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Wahl DSTCAL Software User Manual 

 

 

4   

1.  INTRODUCTION 

This software package is for use with the DST400, DST/DSX500 and DST600 family of 
Digital Thermometers.  There are 2 versions of software, one for customer use and one 
for use by the factory

. The version is indicated on the first line under the “Poll for 

Module” button.  The 2 versions are: 
 

1.1. DSTCAL 

Allows the following: 

  Setting of LCD Refresh (display update rate) for all models; 

  R0 Value for all RTD models; 

  Selection of Thermocouple Type for all Thermocouple models; 

  Programming of the 4-mA value, 20-mA value and burnout selection on the 

DSX models; 

  A

ssociation and enabling of probe ID’s for DST600 series Models; 

  Setting of Low Battery Check rate; 

  Calibration of 

the meter’s measurement electronics, resistance input for RTD 

models and mV input for T/C models; 

  Calibration of the meter and probe using an ice bath for RTD versions; 

  Calibration of the Cold Junction Compensation electronics for T/C versions; 

  Calibration of the 4-20 mA output circuit for DSX models 

NOTE:

 This software does not calibrate the transmitter section of Models 

DST620 or DST621, 

which require the transmitter manufacturer’s software 

and interface module. 

  

1.2. DSTCAL-Pro 
 Only available for the Wahl Factory, same as DSTCAL but also allows setting of 
the unit

’s serial number and setting of the Factory default calibration values. 

 

 

Содержание DST400

Страница 1: ...oftware User Manual Palmer Wahl Instruments Inc 234 Old Weaverville Road Asheville NC 28804 Toll Free 800 421 2853 Phone 828 658 3131 Fax 828 658 0728 www palmerwahl com 09 16 09 WD1037 Rev F Revised...

Страница 2: ...els 13 6 CALIBRATION DSX Current Loop 15 6 1 Theory of Calibration 15 6 2 Current Loop Calibration 15 4 20 mA Calibration Window 15 7 DST600 PROBE ID 16 7 1 Theory of Operation 16 7 2 Definitions 16 1...

Страница 3: ...Wahl DSTCAL Software User Manual 3...

Страница 4: ...ion on the DSX models Association and enabling of probe ID s for DST600 series Models Setting of Low Battery Check rate Calibration of the meter s measurement electronics resistance input for RTD mode...

Страница 5: ...B Interface Module 2 Connect the 4 pin cable assembly p n 13507 to the DST USB Interface Module port labeled DIGI STEM 3 With the Digi Stem unit open connect the opposite end of the 13507 cable to J3...

Страница 6: ...the 4 mA and 20 mA values DSX models only SPY COM Serial Communication Debug Tool Not used during normal operation Help About Displays software version and contact information for Wahl Instruments Sel...

Страница 7: ...rature from the measured resistance For the highest accuracy of measurements it should be set to match the R0 value of the probe being used It may be manually entered or may be automatically calculate...

Страница 8: ...ettings are the calibration coefficients used in calculating temperature from the measured probe resistance These may be changed by the user via the Ohm Meter Calibration routine Restore Factory Setti...

Страница 9: ...fficient To increase the total system accuracy the electronics may be programmed with this value so that the microprocessor can accurately calculate the actual temperature from the measured resistance...

Страница 10: ...et Factory Calibration Window DSTCAL Pro only 14 Do you wish to calibrate the module with the values below Set Factory calibration pair to xxx xxxx x xxxx 15 Click Yes to continue or No to return to F...

Страница 11: ...ter Calibration Probe system Calibration Window 1 Click on the Select Calibration to Perform drop down box and select Probe system Calibration 2 Click the Calibrate button 3 Placing probe in Ice Bath...

Страница 12: ...d if the input resistance is not within approximately 4 ohms of the requested nominal setting One or both of the following error messages may occur when in the Meter Only Calibration and the calculate...

Страница 13: ...cted or opens The current values are selected to comply with the NAMUR recommendation NE43 18 01 1994 The two settings available from the drop down menu are Upscale 22 0 mA drives the current to 22 0...

Страница 14: ...Wahl DSTCAL Software User Manual 14 Fig 2...

Страница 15: ...f value is out of acceptable range 2 Click Next to continue or Cancel to abort Enter Measured Current 20 mA Screen 3 Forces DSX unit to output 20 mA signal and prompts user to enter actual value measu...

Страница 16: ...ed probe is being used To authorize a new probe the unit must be connected to the programming or calibration software where it is recommended the unit be recalibrated to ensure accuracy The Probe ID m...

Страница 17: ...ollowing screen will appear Clicking OK will close this window To associate the new probe click the Capture Probe button Fig 3 The following screen will appear To associate the new probe clicks yes ot...

Страница 18: ...temperature scale to be used when programming the 4 mA and 20 mA values DSX models only currently not available on 400 series Help About Displays software version and contact information for Wahl Ins...

Страница 19: ...y checking Thermocouple Type Allows selection of J K E T or S thermocouples Changing of the thermocouple type requires the recalibration of the Cold Junction Compensation using the newly selected ther...

Страница 20: ...to insert a 25 C equivalent signal via thermocouple wire of the selected type to the DST400 input connector This calibration must be performed after changing thermocouple type Existing Thermocouple Ca...

Страница 21: ...le type wire The correction factor used by the meter is the mV equivalent of the temperature offset measured in accordance with the selected thermocouple type s mV to temperature table 9 2 Meter Calib...

Страница 22: ...d to Set Factory Calibration window below Set Factory Calibration Window DSTCAL Pro only 13 Do you wish to calibrate the module with the values below Set Factory calibration pair to xxx xxxx x xxxx 14...

Страница 23: ...Screen 5 Displays results of calibration 6 Click Set Calibration to continue Clicking Cancel will return to main screen Set Active Calibration Window 7 Do you wish to calibrate the module with the val...

Страница 24: ...L USB 232 interface box and should be selected in the select COM port window 6 Plugging the cable back in will force the list to refresh again and it should now include the COM port for the interface...

Страница 25: ...the DSTCAL program 4 Restart the computer 5 Open DSTCAL 6 Connect the DST USB Interface Module to the computer 7 Install the battery into the Digi Stem 8 Connect the DST USB Interface Module to the D...

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