User manual VAISALA MM70

[. . . ] USER'S GUIDE Vaisala HUMICAP® Hand-Held Moisture and Temperature in Oil Meter MM70 M210498EN-C 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 2007 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. ________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Set the value A by using the arrow keys up/down/left/right, press the OK key. 5. 6. VAISALA _______________________________________________________________________ 31 USER'S GUIDE____________________________________________________________________ 7. Set the value B by using the arrow keys up/down/left/right, press the OK key. Remember always select the correct oil type before measurements. 10. 11. 0605-109 Figure 15 Measurement Setting Menus NOTE If you want to determine coefficients for oil, see Determination of Oil-specific Coefficients on page 55. Other Functions Setting the Alarm Levels 0605-092 Figure 16 Alarm Function Menus 32 __________________________________________________________________ M210498EN-C Chapter 4 _________________________________________ MENU OPERATIONS AND SETTINGS MM70 alarms by beeping and blinking the backlight. The alarm turns on when the measured value is not between the alarm limits (permitted area). To change the active quantities, enter MENU, Display, Quantities and units). Select the first limit, press the SET key (if the alarm function is ON, take it OFF). The alarm will go off when the upper limit is exceeded or when the lower limit is gone below. If you have only one limit, e. g. if you want to detect if the aw reaches 0. 9, set the upper limit to 0. 9 and the lower limit so low that it never will be reached (for example 0). Select Alarm ON/OFF, press the ON key to activate the alarm and return back to the basic display. When the alarm level is reached, you can stop alarming by pressing the OK key. 10. NOTE The alarm is not in function when the device is turned off. Remember to turn off the automatic power off, see Automatic Power Off on page 27. VAISALA _______________________________________________________________________ 33 USER'S GUIDE____________________________________________________________________ Selecting and Scaling the Analog Output 0605-093 Figure 17 Analog Output Menus To get analog measurement data, you need the analog output signal cable, see section Options and Accessories Available on page 66. One voltage signal channel 0. . . 1. 0V can be scaled for the selected quantity. Connect the analog output signal cable connector to the indicator base connector. Connect the screw terminal block as follows: - Brown wire: Common wire (-) - Yellow-green wire: Signal (+) 2. To change the active quantities, enter MENU, Display, Quantities and units). 34 __________________________________________________________________ M210498EN-C Chapter 4 _________________________________________ MENU OPERATIONS AND SETTINGS 7. Select 0. 0 V to set the value for the 0. 0 V output signal, press the SET key (if the analog output is ON, turn it OFF). Select 1. 0 V to set the value for the 1. 0 V output signal, press the SET key. Select Analog output on/off, press the ON key to activate the analog output and return to the basic display. To deactivate the analog output function, enter MENU; Functions, Analog output, Analog output on/off and press the OFF key. 8. 9. 10. Taking Measurements When you start to use the MM70 for the first time, see Chapter 3, INSTALLATION AND MOUNTING OPTIONS , on page 13. [. . . ] To return to the basic display, first press the BACK key and then press the EXIT key. Last Adjustment Date To see the last adjustment date, select Last adjustment date. For more information, see section Device Information on page 29. Determination of Oil-specific Coefficients The equation of the Ppm conversion is: ppm = aw*10(B+A/T) With the following procedure the coefficients A and B can be defined for the equation: LOG(PPMsat)= B + A/T Equipment needed: - Apparatus for determining water content ( for example, coulometric titrator and e. g. magnetic stirrer. ) - Oil test station: - a temperature test chamber - for example, a conical flask (1L) sealed by PTFE stopper with an inlet for a moisture probe - MMT330 by Vaisala - magnetic stirrer. Use the oil moisture level that is close to real conditions in the process. [. . . ]