6
SPECIFICATIONS
Range
pH
– 4.00 to 19.99 pH
mV
±600.0 mV
±2000 mV autoranging
Temp.
– 20 to 120 °C
Resolution
pH
0.01 pH
mV
0.1 mV within ±400mV
0.2 mV from
+
400 to
+
600mV
0.2 mV from
-
400 to
-
600mV
1 mV outside
Temp.
0.1°C from -10 to 120 °C / 1°C below -10°C
Accuracy
pH
±0.01 pH
(
@
20°C/68°F)
mV
±0.2mV within ±400mV
±0.4mV from +400 to +600mV
±0.4mV from
-
400 to
-
600mV
±2mV outside
Temp.
±0.2°C from 0 to 70°C / ±1°C outside
Typical EMC
pH
±0.02 pH
Deviation
mV
±1mV within ±600mV
±2 mV outside
Temp.
±0.4°C
pH Calibration
Automatic, at 1 or 2 points with 8 memorized
buffers (1.68, 3.00, 4.01, 6.86, 7.01, 9.18,
10.01, 12.45 pH)
mV Calibration
Automatic, 2 points at 0 and 350 mV, or
3 points at 0, 350 and 1900 mV
Temperature
Automatic or Manual
Compensation
between -20 and 120°C or
pH Electrode
HI 1230B/C
, double junction, BNC connector
with protective sleeve (included)
Temperature probe HI 7662
(included)
Input Impedance
10
12
Ohm
Power supply
4x1.5V AA size alkaline batteries;
approx. 400 hours (without backlight)
Casing
IP 67
Environment
0 to 50°C / 100% RH
Dimensions
196 x 80 x 60 mm (7.7 x 3.1 x 2.4")
Weight
500 g (18 oz.)
PREPARATION
Remove the protective cap.
DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal
with electrodes and they will disappear when rinsed with water.
During transport tiny bubbles of air may form inside the glass bulb.
The electrode cannot function properly under these conditions. These
bubbles can be removed by "shaking down" the electrode as you
would do with a glass thermometer.
If the bulb and/or junction are dry, soak the electrode in
HI70300
Storage Solution for at least one hour.
For refillable electrodes:
If the fill solution (electrolyte) is less than 1 cm (½") below the fill
hole, add
HI7082 3,5M KCl Electrolyte Solution
for double junc-
tion or
HI7071 3,5M KCl+AgCl Electrolyte Solution
for single
junction electrodes.
For a faster response unscrew the fill hole screw during measurements.
For AmpHel electrodes:
If the electrode does not respond to pH changes, the battery is run
down and the electrode should be replaced.
MEASUREMENT
Rinse the electrode tip with distilled water.
Immerse the tip (4 cm /1½") in the sample and stir gently for
approx. 30 seconds. For a faster response and to avoid cross
contamination of the samples, rinse the electrode tip with a few drops
of the solution to be tested, before taking measurements.
STORAGE
To minimize clogging and ensure a quick response time, the glass bulb
and the junction should be kept moist and not allowed to dry out.
Replace solution in the protective cap with a few drops of
HI70300
or
HI80300 Storage Solution
or, in its absence,
Filling Solution
(
HI7071
for single junction or
HI7082
for double junction electrodes).
Follow the Preparation Procedure above before taking measurements.
Note:
NEVER STORE THE ELECTRODE IN DISTILLED WATER OR DRY.
PERIODIC MAINTENANCE
Inspect the electrode and the cable. The cable used for connection to
the meter must be intact and there must be no points of broken
insulation on the cable or cracks on the electrode stem or bulb.
Connectors must be perfectly clean and dry.
If any scratches or cracks are present, replace the electrode.
Rinse off any salt deposits with water.
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