User manual VAISALA OMT364

[. . . ] USER'S GUIDE Vaisala SPECTRACAP® Oxygen Transmitter OMT364 M210862EN-A PUBLISHED BY Vaisala Oyj P. O. Box 26 FI-00421 Helsinki Finland Phone (int. ): Fax: +358 9 8949 1 +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. 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. [. . . ] There is no notification of an expired password through the Local interface. NOTE Password "1010" opens the service level. If you want to restrict access to this password, remove this page from the manual for safe-keeping. Analog Output Calibration Calibrate Analog Output Command (ICAL) This command is used to calibrate the current output. The command calculates and sets values for gain and offset parameters GI and OI. Syntax: ICAL<cr> Example: >ical Ilow (mA) Ihigh (mA) > ?17. 6 74 ___________________________________________________________________M210862EN-A Chapter 5 ________________________________________________________________ Operation Analog Output Scaling and Settings Scale Analog Output Function (Ascl) The analog output can be scaled freely with the scale analog output function. For example, you may set 0. 00 mA <=> 3 %O2 and 20. 00 mA <=> 7 %O2. When the scale analog output function Ascl has been selected the low end value (at 0. 00/4. 00 mA) is displayed, which can then be adjusted with the Up/Dn keys. The analog output scaling mode is stopped by pressing the Back key or by time-out (five minutes). 0511-100 0511-101 0511-102 Show/Set Output Parameters Command (OUT_PARAMS) This command sets analog output related parameters. Syntax: OUT_PARAMS<cr> VAISALA _______________________________________________________________________ 75 User's Guide ______________________________________________________________________ Example: >out_params NONFATALI (mA) FATALI (mA) I4 OUTMAXO2 (%) OUTMINO2 (%) : : : : : 3. 000 2. 000 1 20. 000 0. 000 ?? where NONFATALI = Output current (in mA) in case of nonfatal error FATALI I4 = Output current (in mA) in case of fatal error = Parameter used to set whether the current output range starts from 0 or 4 mA: when I4 = 0, then the current output is 0 . . . 20 mA when I4 = 1, then the current output is 4 . . . 20 mA OUTMAXO2 = Oxygen concentration OUTMAXO2 (%) is set to (%) correspond to current output 20 mA OUTMINO2 = Oxygen concentration OUTMINO2 (%) is set to (%) correspond to current output 0/4 mA Analog Output Testing Set Test Current to Analog Output Command (ITEST) This command starts or stops current output test mode. Syntax: ITEST [current]<cr> where current Example: >itest 4 Test current set at 4 mA. > = Test current (mA) 76 ___________________________________________________________________M210862EN-A Chapter 5 ________________________________________________________________ Operation Test Analog Output Function (Aou) When the test analog output Aou mode has been selected the analog output displays first the existing current output and then it can be forced first to a 0. 00 mA output current stage by pressing Ent. The same value is also displayed ("0. 00"). By pressing the Up/Dn keys the output can be switched to output values 0. 00 mA, 4. 00 mA, 12. 00 mA or 20. 00 mA. The test mode is stopped by pressing the Back key or by time-out (five minutes). 0511-094 0511-095 0511-096 0511-097 0511-098 VAISALA _______________________________________________________________________ 77 User's Guide ______________________________________________________________________ Relay Operation Show/Set Relay Operating Mode Command (RELAY_MODE) This command sets the relay operating mode. See also command Show/ Set Relay Trigger Points Command (RSEL) on page 78. Syntax: RELAY_MODE [fault_alarm / high_open / low_open]<cr> where fault_alarm high_open = Relay open if a fault exists = Relay open when measurement result is above high point = Relay closed when measurement result is below low point low_open Relay open when measurement result is below low point Relay closed when measurement result is above high point NOTE Relay is of a non-latching type. Show/Set Relay Trigger Points Command (RSEL) This command sets the relay trigger levels. Syntax: RSEL<cr> Example: >rsel LO POINT (%02) : 10. 0 HI POINT (%02) : 11. 0 ?? 78 ___________________________________________________________________M210862EN-A Chapter 5 ________________________________________________________________ Operation Test Alarm Relay Function (Ala) When the test alarm relay function Ala has been selected the current status of the relay "OPE" (open) or "CLO" (close) is displayed. By pressing the Ent key the text starts to blink and it is possible to change the value with the Up/Dn keys. [. . . ] Whenever there are errors the most severe error is shown first. The other errors can be seen by scrolling up and down the error list by pressing the Up/Dn keys. Nonfatal errors and warnings can be reset by pressing Ent twice. 0511-078 0511-079 0511-080 VAISALA ______________________________________________________________________ 147 User's Guide ______________________________________________________________________ Error Table The table below lists the errors detected by the OMT364 software. The most severe errors are listed first. [. . . ]