Emerson PN 51-1055pHC/rev.K instruction manual Choose Measurement Choose BufferCal, Enter

MODEL SOLU COMP II	SECTION 6.0
	CALIBRATION

Calibrate	Hold
Program	Display
Calibrate?
Sensor1	Sensor2
CalSensor1?
Measurement	Temp
S1	Standardize
Slope	BufferCal
S1BufferCal?
Auto	Manual
S1AutoCal?
Buffer1	Buffer2
S1Live	7.00pH
AutoBuf1	Wait
S1Live	7.00pH
AutoBuf1	7.01pH
S1AutoCal?
Buffer1	Buffer2
S1AutoCal?
Buffer1	Buffer2
S1Live	7.00pH
Buf2	Wait
S1Live	7.00pH
AutoBuf2	7.01pH
S1Offset	6mV
Slope	59.16 25°C
Calibration
Error

a.Press MENU. The main menu screen appears. Choose Calibrate.

b.Choose Sensor1 (pH sensor).

c.Choose Measurement.

d.Choose BufferCal.

e.Choose Auto.

f.Choose Buffer1.

g.Rinse the sensor with water and place it in buffer 1. Be sure the glass bulb and reference junction are completely submerged. Swirl the sensor.

h.The screen at left is displayed until the reading is stable (<0.02 pH change in 10 sec). When the reading is stable, the screen in step i appears. To bypass automatic stabilization, press ENTER at any time.

i.The top line shows the actual reading (S1Live). The analyzer also identifies the buffer and displays the nominal buffer value (buffer pH at 25°C). If the

displayed value is not correct, press or to select the correct value. The nominal value will change, for example, from 7.01 pH to 6.86 pH. Press

ENTER.

j.The screen shown at left appears.

k.Remove the sensor from buffer 1, rinse it with water, and place it in buffer 2. Swirl the sensor. Choose Buffer2.

l.The screen at left is displayed until the reading is stable (<0.02 pH change in 10 sec). When the reading is stable, the screen in step m appears. To bypass automatic stabilization, press ENTER at any time.

m.The top line shows the actual reading (S1Live). The analyzer also identifies the buffer and displays the nominal buffer value (buffer pH at 25°C). If the

displayed value is not correct, press or to select the correct value. The nominal value will change, for example, from 7.01 pH to 6.86 pH. Press ENTER to accept the nominal value.

n.If the calibration was successful, the analyzer will display the offset and slope (at 25°C). The display will return to the screen in step b. Choosing Sensor2 (conductivity sensor) will permit the conductivity measurement to be calibrated.

o.If the slope is out of range (less than 45 mV/pH or greater than 60 mV/pH), an error screen appears. The display then returns to step f. Repeat the cal- ibration.

p.To return to the main display, press MENU followed by EXIT.

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