User manual VAISALA HMP130Y

[. . . ] INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 1 HMI41 with calibration option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 2 Selecting the HMI41 calibrator function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OUTPUT SCALE SELECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] They indicate the lower limit of the transmitter's temperature range currently stored in the HMI41 memory. Text in the lower righthand corner is Lo. You can now set the lower limit with buttons v (number up) or w (number down) to correspond to that of the transmitter. Acknowledge the setting with ENTER: T T set Hi °C °C Numbers on the first line start to blink. They indicate the upper limit of the transmitter's temperature range currently stored in the HMI41 memory. Text in the lower righthand corner is Hi. You can now set the upper limit with buttons v (number up) or w (number down) to correspond to that of the transmitter. Acknowledge the setting with ENTER and turn the HMI41 off with the ON/OFF button. You can now calibrate the transmitter (see Chapter 3). 2. 3. 3 Customized voltage output selection mode (cU) The customized voltage output selection mode (cU) is selected when the scaling of the RH, T and/or voltage range is not a standard one. Select the cU selection mode with buttons v or w and acknowledge the selection with ENTER. A text similar to the following is displayed: RH set 6 1996-08-29 19116ZZ-U218en-1. 1 HMI41 Calibration Option Operating Manual 2. 3. 3. 1 RH Humidity channel set Numbers on the display are blinking. You can now calibrate the transmitter (see Chapter 3). 2. 3. 4 Customized current output selection mode (cI) The customized current output selection mode (cI) is selected when the scaling of the RH, T and/or current range is not a standard one. NOTE When calibrating transmitters with current outputs, make sure that the output loop is terminated. 10 1996-08-29 19116ZZ-U218en-1. 1 HMI41 Calibration Option Operating Manual Select the cI selection mode with buttons v or w and acknowledge the selection with ENTER. A text similar to the following is displayed: RH set 2. 3. 4. 1 RH Humidity channel set Numbers on the second line are blinking. They indicate the current range of the the transmitter's RH channel currently stored in the HMI41 memory. Select the range with buttons v or w to correspond to that of the transmitter. A text similar to the following is displayed: RH % set Lo Numbers on the second line are blinking. They indicate the lower limit of the transmitter's RH range currently stored in the HMI41 memory. Text in the lower righthand corner is Lo. You can now set the lower limit to correspond to that of the transmitter. Set the limit with buttons v or w and acknowledge the setting with ENTER: RH % set Hi Numbers on the first line start to blink. They indicate the upper limit of the transmitter's RH range currently stored in the HMI41 memory. [. . . ] If the difference between the readings is less than 0. 5 °C, make no adjustments. When performing the temperature calibration of the HMD/W60 transmitters, make sure that the calibration cable is connected to the T test connector (Figures 3. 2 and 3. 3). Temperature calibration is entered through the RH calibration modes (see Chapter 3. 2). By pressing MODE in the first RH calibration mode, a text similar to the following is displayed: T T °C °C Numbers on the first line indicate the temperature measured by the transmitter, and numbers on the second line indicate the temperature measured by the HMI41. [. . . ]