Mettler Toledo M400 Especificaciones descargar pdf (Pagina 103)

Transmitter M400 103

Printed in Switzerland 52 121 378

11.2.1.5 Rr diagnostics

Rr diagnostic is performed as a two point calibration. Navigate to the Calibrate Meter screen

and select Channel A and Rr Diagnostic.

Enter the value for Point 1 of the calibration according to the resistor connected across the

pH reference measuring input. Press [ENTER] to begin the calibration process.

Enter the value for Point 2 of the calibration according to the resistor connected across the

pH reference measuring input.

Pressing the [ENTER] key after entering Point 2 will bring up a confirmation screen. Select Yes

to save the calibration values and the successful calibration is confirmed on the display. The

transmitter will return to the measurement mode in approximately 5 seconds.

11.2.1.6 Calibrate analog

Select the Analog Output you wish to calibrate. Each analog output can be calibrated at 4 and

20 mA.

Connect an accurate milliamp meter to the analog output terminals and then adjust the five

digit number in the display until the milliamp meter reads 4.00 mA and repeat for 20.00 mA.

As the five digit number is increased the output current increases and as the number is

decreased the output current decreases. Thus coarse changes in the output current can be

made by changing the thousands or hundreds digits and fine changes can be made by chang-

ing the tens or ones digits.

Pressing the [ENTER] key after entering both values will bring up a confirmation screen. Select-

ing No will discard the entered values, selecting Yes will make the entered values the current

ones.

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Mettler Toledo M400 Especificaciones Pagina 103