Mettler Toledo Technical Manuals
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. Turn the meter upside down and seat the dome of the electrode arm base into the left Input and Output Connections or righthand meter recess. MP220 Rear Panel power supply combination automatic temperature unit socket. Input and Output Connections (continued) Display MP225 Rear Panel power supply recorder output reference unit socket socket electrode stability/auto endpoint prog. Menu icons shown socket indicator here (and data transfer icon - MP225 only) data output pH or automatic temperature socket combination compensation probe. Repeat steps 1 and 2 using other buffers for a Calibrating 2 point (or 3 point - MP225 only) calibration. 1-point calibration Electrode Condition Indicator Example 95.0 - 105.0% 90.0 - 94.9% 85.0 - 89.9% electrode in electrode electrode 2 seconds good.
Measuring Samples If you press Mode to select pH or mV mode the meter begins measuring immediately. You will not need to 1. Select pH or mV mode press Read to start the reading.
The decimal point flashes during sample measurement. Operating Hints When you select the calibration buffers (Program Menu), set the buffer you will use Remove the wetting cap from the end of the most frequently for 1-point calibrations as cal 1 electrode and the rubber cap from the fill hole (if and the one you will use most frequently for the fitted) before using the electrode.
Press Mode to clear the memories, M 0 indicates Entering a Reading into Memory the memories have been cleared. (Press Read to exit The MP220 can store 10 endpointed results and the without clearing the memories). MP225 can store 20. Using Continuous Data Resetting Sample ID (MP225 only) Transfer Mode (MP225 only) The sample identity number is sent to the serial output and increments 1 every time a sample In continuous data transfer mode readings are sent measurement endpoints.
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To the data output approximately every second. If the measurement endpoints (manually, or using To reset the sample ID number to 1, press and hold auto endpoint) data transfer stops. Program Menu at any time. If you press Read when a Manual Temperature Compensation value is flashing that value will not be entered.
(MP220 and MP225) Calibration Reminder (MP225 only) You can enter temperature manually between –5.0 and 105.0 C. (An ATC probe The calibration reminder interval can be will override manual compensation.) The. Program Menu (continued) These can be rearranged in any order using.
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Press Mode to enter the value pH Buffer Selection (MP220 and MP225) and move on. The buffers are grouped in sets Press Read to exit the Program Menu. Interfacing Data is sent to the Data socket at measurement (MP225 only) endpoint (manual or automatic), calibration recall and Serial Output memory recall. The MP225 can interface with computers, printers To use the output to monitor continually, you need to (GA42), Acquire Data Acquisition software and other select continuous data transfer mode. Problem Solving Displayed (out of range) Check electrode is connected and immersed in Err 1 - offset value (E ) out of range sample. Check wetting cap is removed.
Check correct buffer is used. Data Entry Errors Check mV reading for pH 7 buffer is 0 30 mV. Spares and Accessories Maintenance 52000100 InLab 413 ‘3 in 1’ pH Electrode There are no user replaceable parts in the meters or power supply unit. Do not remove the covers. 52000118 InLab 410 pH Electrode 51300164 NTC Probe The meters require very little maintenance. 51302118 Electrode Arm and Base Occasionally wipe the meter with a damp cloth. Buffer Tables The MP220 and MP225 automatically correct pH buffers for temperature using the values shown in the table.
1.68 2.00 4.00 4.01 6.87 7.00 9.18 9.21 10.01 11.00 1.67 2.02 4.00 4.01 6.95 7.09 9.39 9.45 10.25 11.72 10 C 1.67. Specifications MP220 MP225 MP220 MP225 Memory 10 memories 20 memories Measurement pH 0.00 to 14.00 –2.00 to 16.00 Ranges 1999 mV 1999 mV Temp. –5.0 to 105.0 C –5.0 to 105.0 C Temp.5.0 to 105.0 C –5.0 to 105.0 C. Specifications (continued) Power Requirements The MP220 and MP225 are supplied with an appropriate power supply unit. USA/Japan 100 - 120V, 50/60Hz, 0.85VA Europe 230V, 50Hz, 1.1VA Output from PSU: 9V DC Meter Power Rating: 0.3VA NOTE: The meters should only be used with the.