Mettler-Toledo梅特勒-托利多安装手册 pH变送器pH 2500.pdf

pH Transmitter 2500 Your Consultant: 01/99 20 606 1159 Mettler-Toledo GmbH, Process, Postfach, 8902 Urdorf, Switzerland Phone +41 (01) 736 22 11, Fax +41 (01) 736 26 36 pH Transmitter 2500 Warranty Defects occurring within 3 years from delivery date shall be remedied free of charge at our works (carriage and insurance paid by sender). Accessories and display backlighting: 1 year TA–168.100–MTE02 020899 Software release: 6.x Changes for Software Release 6 No logbook recording of error messages during maintenance, calibration, and parameter setting During maintenance work, such as cleaning the sensor or during calibration, often a great number of error messages is generated. These messages are completely meaningless for the measurement because the unit is in functional check mode and the current is frozen. Therefore, they are not recorded in the logbook any more. Logbook entry after input of wrong passcode The attempt to activate a function using a wrong passcode is recorded in the log- book. Manual selection of temperature probe Automatic Pt 100/Pt 1000 recognition and selection is omitted. Functional check also during sample calibration During calibration, after passcode input, the “functional check” NAMUR signal is gen- erally set, i.e. the output current is frozen. Up to now, this signal has not been set during sample calibration. Safety Information Be sure to read and observe the following requirements! Before connecting the apparatus to mains, make sure that the mains voltage corre- sponds to the voltage rating given on the rating plate. Opening the apparatus exposes live parts. Therefore, the apparatus shall not be op