Barnant Company 559-3800 Operating Manual - page 4
pH Calibration
Calibration with manual temperature compensation.
1. Press ON/OFF key to turn meter on.
2. Connect the pH probe to the meter.
3. Immerse the probe in buffer 7.00.
4. Press the pH/mV key to select pH.
5. Adjust temp °C control to the temperature of buffer 7.00.
NOTE: A separate thermometer is needed to measure the temperature of
the buffers. Both buffers should be at the same temperature.
6. Adjust the standardize control to read 7.00 pH on the display.
7. Rinse the probe with distilled water and blot dry.
8. Immerse the probe in the second buffer (4.00 or 10.00).
9. Adjust the temp °C control to the temperature of the second buffer.
10. Allow the reading to stabilize, then adjust the SLOPE control to
the value of the second buffer.
11. Rinse the probe with distilled water.
Calibration is now complete.
OPERATION
1. Push the ON/OFF key to turn the meter on.
2. Push the pH/mV key until the annunciators indicate the desired mode.
For pH measurement: Rinse the probes with distilled water, then immerse
the probe in the solution to be measured. The pH value will stabilize after
a few seconds. Do not rub the bulb as this will cause static build-up on the
bulb resulting in faulty readings.
Temperature Compensation
Temperature compensation can be set manually by the temperature °C
adjustment over a range of 0° to 100° C.
For millivolt or ORP measurement: Press the pH/mV key until the display
shows millivolts. Verify the probe connection, then rinse the probe with dis-
tilled water and blot dry. Immerse the probe in the sample to be measured.
Allow the displayed reading to stabilize, then take the reading.
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GENERAL DESCRIPTION
This portable, Digital pH Meter is designed with solid state electronics pro-
viding highly reliable operation. The LCD display enables you to read even
under bright ambient conditions. It is designed for pH (manual), millivolt and
ORP determination.
OPERATING TIPS
For fast response, the glass bulb of the probe should always be kept moist.
A rubber cap is supplied with the probe to store a small amount of solution
and to cover the glass bulb.
Before use, remove the cap. If the cap has been left off and the tip of the
probe is dry, dip the probe in KCL solution for 30 minutes or soak in tap
water for 2 hours.
When the electrode is not in use, replace the cap which should be filled
with KCL or equivalent probe storage solution. If a solution is not available,
use tap water.
CAUTION: Do not use distilled or deionized water for storing, under any
circumstance.
Front Panel Controls
The features on the front panel are:
1. ON/OFF key
2. (pH/mV) key
3. SLOPE adjustment
4. Manual temperature adjustment
5. Standardize control
6. pH probe input
7. LCD display
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