User’s Manual 920 Series RTD Transmitter 920_Prog Txr Software www.noshok.
920_Prog Txr User’s Manual – Preliminary Version Table of Contents System Requirements ......................................................................................................3 Installing the Software ......................................................................................................3 Uninstalling the Software ..................................................................................................3 Reading Device Configuration ....................................
920_Prog Txr User’s Manual – Preliminary Version System Requirements To install the 920_Prog Txr Software, you need these minimum system requirements: • • • • • Pentium III – 600 MHz or better 10 MB of Hard Disk space 256 MB of RAM Windows XP or VISTA 1 USB port Installing the Software *** IMPORTANT *** If you already have an old version of the 920_Prog Txr Software on your computer you must first uninstall it. To do so, use the Windows Add/Remove Program utility in the Control Panel.
920_Prog Txr User’s Manual – Preliminary Version Reading Device By launching the 920_Prog Txr Software, the main window of the 920_Prog Txr software will appear on the screen (Figure #1). FIGURE #1 To establish the communication between the 920_Prog Txr software and the RTD transmitter, click on the “Read Device” button. The software will automatically scan all the communication ports available on the computer and will try to establish the communication with the RTD transmitter.
920_Prog Txr User’s Manual – Preliminary Version The communication ports available on the computer can be seen in the Device Manager of Windows. The USB driver automatically creates a virtual COM port when the communication module is connected and will appear in the Device Manager under the section “Ports” - “Silicon Labs CP210x”.
920_Prog Txr User’s Manual – Preliminary Version Calibration Date: To modify the last calibration date value, simply enter the new date in the text boxes called “Calibration Date”. The date has to be entered under the format Year/Month/Day. Clicking on the “Computer Date” button will automatically set the calibration date to the computer’s date. Once the date is entered correctly, click on the “SET” button, located in the GENERAL section, to upload the value into the RTD Transmitter .
920_Prog Txr User’s Manual – Preliminary Version Filtering: The filtering option allows the user to set the time response of the digital filter implemented in the RTD Transmitter . There are four (4) different settings. The first one is “none” which means the response time of the output is only dependent of the mechanical construction of the RTD sensing portion. The other settings are 1, 3 and 5 seconds.
920_Prog Txr User’s Manual – Preliminary Version To re-scale the RTD Transmitter in a range that is not included in the “Preset Range”, simply enter the value, in the current engineering units, that corresponds to a reading of 4 mA and 20 mA, in their respective text boxes. To apply this new range, click on the “SET” button located in the OPERATION RANGE section. Once the new range is set, the “Actual Reading”, located in the bottom right of the Programming window, will be updated with the new values.
20_Prog Txr User’s Manual – Preliminary Version The next step is the adjustment of the 20 mA. To perform that operation, simply click on the 20 mA button located in the CURRENT ADJUSTMENT section of the “Programming” window. This will force the RTD Transmitter output to the theoretical value of 20.00 mA. Once the button is pressed, a small dialog box appears on the screen (Figure 3-B) allowing the user to set the output current, by clicking on the “+” or “-” button, to read exactly 20.
920_Prog Txr User’s Manual – Preliminary Version “One Point” Calibration The “One point” calibration allows the user to offset the output of the RTD Transmitter to match perfectly a known temperature to which the RTD Transmitter is set. To perform this calibration, a known and stable temperature reference is required. Set the RTD Transmitter to this known reference temperature and wait long enough to be sure that the reading is stabled.
920_Prog Txr User’s Manual – Preliminary Version point must be at a higher value than the “First Point”. Once the output reading from the RTD Transmitter is stable, enter the temperature value in the text box called “Second Point:” located in the 2 POINTS CALIBRATION section, and click on the corresponding “Read” button. The input value is then saved in the RTD Transmitter memory as well as the temperature reference for the second point.
Corporate Headquarters 1010 West Bagley Road , Berea, Ohio 44017 Ph: 440.243.0888 Fax: 440.243.3472 E-mail: noshok@noshok.com Web: www.noshok.
