User manual VAISALA HMT330

[. . . ] USER'S GUIDE Vaisala HUMICAP Humidity and Temperature Transmitter Series HMT330 ® M210566EN-H PUBLISHED BY Vaisala Oyj P. O. Box 26 FI-00421 Helsinki Finland Phone (int. ): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at http://www. vaisala. com/ © Vaisala 2009 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. 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. ________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] In the automatic mode the backlight stays on for 30 seconds from the last press of any button. Press EXIT to return to the basic display. VAISALA _______________________________________________________________________ 69 User's Guide ______________________________________________________________________ Display Contrast Setting 1. Press OK and EXIT to return to the basic display. Keypad Lock (Key guard) This function locks the keypad and prevents unintentional key presses. Keep pressing the left-hand function button for 4 seconds to lock the keypad (at any display). To unlock the keypad, press the OPEN button for 4 seconds. Menu PIN Lock You can prevent unauthorized changes of the device settings by activating the menu PIN lock. When this function is activated, the basic display and graphical view are available but access to the menus is locked. Returning to the menu is possible only by entering the correct PIN code. 5. When you want to turn off the PIN lock, go to the menu by giving the PIN code and select System, Menu PIN, press OFF button. In case you have forgotten the PIN code, open the transmitter cover and press the ADJ button once. Select Clear menu PIN, press CLEAR. NOTE You can also disable the keypad completely with serial command LOCK. 70 __________________________________________________________________ M210566EN-H Chapter 4 ________________________________________________________________ Operation Factory Settings Use the display/keypad to restore the factory settings. Select Factory settings and press the REVERT button to confirm your selection. Press the YES button to reset all settings to the factory defaults. See section General Settings on page 92 for a description of the other menu options. Display Alarms The Display Alarm feature provides two independently configurable alarms for transmitters with the display/keypad option. Each alarm tracks a selected quantity, with a freely configurable low and high limit. Each alarm also has a configurable hysteresis value to prevent unnecessary triggering when the measurement fluctuates around an alarm limit. The alarms can be configured for any quantity supported by the transmitter. The configuration of the Display Alarms can only be done using the display/keypad option. An alarm is activated when the selected quantity goes higher than the high limit, or lower than the low limit, much in the same way as the relays. When an alarm is activated, an alarm note is displayed on the display, and the lights of the display will blink. 0802-041 Figure 46 Display Alarm Active Multiple alarms can be active at the same time; the alarm that was triggered first will be shown on the display. The next active alarm is revealed when the currently shown alarm is acknowledged by pressing the OK button. VAISALA _______________________________________________________________________ 71 User's Guide ______________________________________________________________________ Note that activated alarms are only shown on the screen. There are no alarm messages output to the serial line, or markers placed in the graph data. After an alarm has been acknowledged, you must refer to the data graphs to see when the measured quantities have exceeded the limits. Configuring a Display Alarm 1. Use the arrow keys to select Display, followed by Alarms, to open the Display Alarms menu. The Display Alarms menu shows the currently enabled and disabled alarms. 0802-069 Figure 47 3. Display Alarms Use the arrow keys to select an alarm to configure. [. . . ] For example AGRO 1100. 12. 91. 065 Compacted PTFE sleeve Silicon glue between the PTFE sleeve and the cable Temperature probe Recommended support to keep the probe in horizontal position VAISALA ______________________________________________________________________ 167 User's Guide ______________________________________________________________________ Example of Climate Chamber Installation 0507-016 Figure 93 Climate Chamber Installation (not Available from Vaisala) The following numbers refer to Figure 93: 1 2 3 4 5 6 7 = = = = = = = PTFE sleeve Cable gland, for example: AGRO 1100. 12. 91. 065 Stainless steel cable tie or similar fastenerl To be sealed (silicone) Temperature probe Relative humidity probe HMP247CG, Cable gland AGRO (available from Vaisala) NOTE Let the cables hang loosely to prevent condensed water running to the probe. 168 _________________________________________________________________ M210566EN-H Appendix A _________________________________ Probe Installation Kits and Installation Examples Example of Installation Through Roof 2 1 3 12 Outdoor environment 11 10 9 8 4 5 7 6 Process: For example +85 ºC, 85 %RH 0507-015 Figure 94 Example of Installation through Roof The following numbers refer to Figure 94: 1 2 3 4 5 6 7 8 9 10 11 12 = = = = = = = = = = = = Insulated probe cables Sealings Roof Cable gland for temperature probe (for example: AGRO 1100. 12. 91. 065) Temperature probe Relative humidity probe Cable gland for relative humidity probe (for example: AGRO 1160. 20. 145) Plastic adapter to protect probes from condensation water coming from the pipe. Plastic tube for probe (2 pcs) Stainless steel tube coming through the roof. Insulated pipe ending. VAISALA ______________________________________________________________________ 169 User's Guide ______________________________________________________________________ Ball Valve Installation Kit for HMT338 The ball valve installation kit (Vaisala order code: BALLVALVE-1) is preferred when connecting the probe to a pressurized process or pipeline. Use the ball valve set or a 1/2" ball valve assembly with a ball hole of ø14 mm or more. [. . . ]