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. [. . . ] 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. Text in the lower righthand corner is Lo. 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. Text in the lower righthand corner is Hi. 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. 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: 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 to correspond to that of the transmitter. Set the limit with buttons v or w and acknowledge the setting with ENTER. Turn the HMI41 off with the ON/OFF button. You can now calibrate the transmitter (see Chapter 3). [. . . ] 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. It is recommended to use the offset potentiometer. · After having completed the calibration, press ON/OFF and disconnect the cable. 16 1996-08-29 19116ZZ-U218en-1. 1 HMI41 Calibration Option Operating Manual If you press the HOLD button in the first T calibration mode, you will go on to the second T calibration mode which is an alternative for the first one. A text similar to the following is displayed: T T °C °C Numbers on the first line indicate how much the temperature measured by the transmitter differs from that measured by the HMI41 reference probe. [. . . ]