User manual VAISALA HMD-W60 WITH HMI41

[. . . ] USER'S GUIDE Calibration of Series HMD/W60/70 and HMP140 Transmitters with Vaisala HUMICAP® Indicator HMI41 U218EN11 PUBLISHED BY Vaisala Oyj P. O. Box 26 FIN-00421 Helsinki Finland Phone (int. ): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at http://www. vaisala. com/ © Vaisala 2006 No part of this manual may be reproduced in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be communicated to a third party without prior written permission of the copyright holder. The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the applicable supply contract or Conditions of Sale. 19116ZZ-U218en-1. 1 HMI41 Calibration Option Operating Manual Contents 1. [. . . ] Acknowledge the setting with ENTER and turn the HMI41 off with the ON/OFF button. 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. They indicate the voltage range of the transmitter's RH channel (jumper selectable) currently stored in the HMI41 memory. Please, consult Figures 2. 3. 1 - 2. 3. 2 when checking the transmitter's jumper positions. RH output selections 0. . . 1V 0. . . 5 V 0. . . 10 V Figure 2. 3. 1 Jumper selections of the HMD/W70 RH output selections 0. . . 1V 0. . . 5 V 0. . . 10 V Figure 2. 3. 2 Jumper selections of the HMP140 Numbers on the second line are blinking, and you can now select the range with buttons v or w according to the transmitter's jumper position. Please, consult Figures 2. 3. 3 - 2. 3. 4 when checking the transmitter's jumper positions. T output selections 0. . . 1V 0. . . 5 V 0. . . 10 V Figure 2. 3. 3 Jumper selections for the HMD/W70 T output selections 0. . . 1V 0. . . 5 V 0. . . 10 V Figure 2. 3. 4 Jumper selections for the HMP140 You can now set the range with buttons v or w to correspond to the jumper position. A text similar to the following is displayed: T set Lo Numbers on the second line are blinking. They indicate the lower limit of the transmitter's voltage range currently stored in the HMI41 memory. You can now set the lower limit with buttons v or w to correspond to that of the transmitter. A text similar to the following is displayed: 1996-08-29 9 HMI41 Calibration Option Operating Manual 19116ZZ-U218en-1. 1 T set Hi Numbers on the first line start to blink. They indicate the upper limit of the transmitter's voltage range currently stored in the HMI41 memory. You can now set the upper limit with buttons v or w to correspond to that of the transmitter. A text similar to the following is displayed: T T set °C °C Lo Numbers on the second line are blinking. They indicate the lower limit of the transmitter's temperature range currently stored in the HMI41 memory. 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: 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. You can now set the upper limit to correspond to that of the transmitter. Set the limit with buttons v or w and acknowledge the setting with ENTER. 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. [. . . ] 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. If you wish, you can now adjust the transmitter (by pressing the MODE button you will return to the RH calibration mode): · Wait until the readings have stabilized and then adjust the calibration potentiometer (Figures 3. 2 - 3. 4) until the readings on the first and the second line are the same. [. . . ]