User Guide

16
SPECIFICATIONS HI 931000
41
CLEANING PROCEDURE
General Soak in Hanna HI 7061 General Cleaning Solu-
tion for approximately ½ hour.
Removal of films, dirt or deposits on the membrane/junction:
Protein Soak in Hanna HI 7073 Protein Cleaning Solu-
tion for 15 minutes.
Inorganic Soak in Hanna HI 7074 Inorganic Cleaning
Solution for 15 minutes.
Oil / grease Rinse with Hanna HI 7077 Oil and Fat Cleaning
Solution.
IMPORTANT: After performing any of the cleaning procedures rinse
the electrode thoroughly with distilled water, drain and refill the
reference chamber with fresh electrolyte, (not necessary for gel-filled
electrodes) and soak the electrode in HI 70300 Storage Solution for
at least 1 hour before taking a measurement.
TROUBLESHOOTING
Evaluate your electrode performance based on the following.
• Noise (Readings fluctuate up and down) could be due to:
- Clogged/Dirty Junction: Refer to the Cleaning Procedure
above.
- Loss of shielding due to low electrolyte level (in refillable
electrodes only): refill with HI 7071 for single junction or
HI 7082 for double junction electrodes.
• Dry Membrane/Junction: Soak in Storage Solution HI 70300
for at least 1 hour.
• Drifting: Soak the electrode tip in warm Hanna Solution
HI 7082 for one hour and rinse tip with distilled water (refill with
fresh HI 7071 for single junction electrodes and HI 7082 for
double junction electrodes if necessary).
• Low Slope: Refer to the cleaning procedure above.
• No Slope: - Check the electrode for cracks in glass stem or
bulb (replace the electrode if cracks are found).
- Make sure cable and connections are not dam-
aged nor lying in a pool of water or solution.
• Slow Response/Excessive Drift: Soak the tip in Hanna Solu-
tion HI 7061 for 30 minutes, rinse thoroughly in distilled water
and then follow the Cleaning Procedure above.
• For ORP Electrodes: polish the metal tip with a lightly
abrasive paper (paying attention not to scratch the surface) and
wash thoroughly with water.
HI 931000
Range pH 0.00 to 14.00
°C 0.0 to 70.0
Resolution pH 0.01
°C 0.1
Accuracy pH ±0.01
(@20°C/68°F) °C ±0.5
Typical EMC pH ±0.30
Deviation °C ±1
pH Calibration Automatic 2 point with
3 memorized standard buffers
(pH 7.01, 4.01, 10.01)
Temperature Automatic from 0 to 70°C
Compensation (32 to 158°F)
Electrode HI 1217D combination 4-in-1 gel
pH electrode with built-in temperature
sensor and amplifier (included)
Battery Type 1 x 9 volt
Life 300 hours of continuous use
Auto-off after 8 minutes of non-use
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions 143 x 80 x 38 mm
(5.6 x 3.2 x 1.5")
Weight 360 g (12.7 oz.)