Manual

Temperature calibration 1. Make sure the ATC probe (or
temperature connector of the “All-in- One” electrode) is attached to the 6-pin connector. The ATC annunciator will appear at the right-hand side of the LCD.
2. Switch the meter on. Press the MODE
key to select pH mode.
3. Press the CAL/MEAS key to enter pH
calibration mode. The CAL indicator will appear above the primary display.
4. While in pH calibration mode, press the
MODE key to enter temperature calibra- tion mode. The primary display shows the temperature value with the last set offset and the secondary display shows the factory default temperature value.
See figure
5. Dip the ATC probe (or “All-in-One”
electrode) into a solution of known temperature (i.e. a temperature bath). Allow time for the temperature probe to stabilize.
6. Scroll with the ▼ and ▲ keys to set
the correct temperature value (i.e. the temperature of the temperature bath). You can adjust the reading in increments of 0.1°C.
See figure
7. Once you have selected the correct
temperature, press the ENTER key. The meter automatically returns to pH measurement mode.
1716
Temperature Calibration
The temperature sensor is factory calibrated. Calibrate your sensor only if you sus- pect temperature errors that may have occurred over a long period of time or if you have a replacement probe.
4.5
ATC
CAL
C
B
B
ATC
CAL
C
A
A
Relative mV Calibration
1. While in the measurement function,
press MODE to enter the mV mode. The mV indicator appears in the upper right hand corner.
See figure
2. Press the CAL/MEAS key. The CAL
indicator appears above the primary display. The primary display shows the relative mV reading and the secondary display shows the absolute mV value.
NOTE: If you have never calibrated relative mV or if the meter has been reset, the value shown in the primary display is the same as the absolute mV value.
See figure 3. Press the ▲ or ▼ keys to enter the
relative mV value that matches your desired reading.
See figure
4. Press the ENTER key to confirm
the reading and to return to the measurement mode. The primary display now shows the relative mV reading. The RmV indicator appears in the upper right hand corner.
Notes To view the mV offset value, use the SETUP mode Program P3.1. See page 30 for instructions. The relative mV (RmV) indicator appears whenever the mV offset is not zero. To reset the all calibration and offset values in memory to the factory default settings, use: • pH 300 meter
: SETUP Program P 5.0.
See page 36.
• pH 310 meter:
SETUP Program P6.0.
See page 39.
4.4
CAL
mV
C
C
CAL
mV
B
B
ATC
MEAS
mV C
A
A
Notes • You can offset the temperature reading up to ±5°C from the original reading. • To exit this program without confirming the temperature calibration value, DO NOT
press ENTER in step 7. Press CAL/MEAS instead.
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