Hanna Instruments HI9811-5 User Manual

13
PERIODIC MAINTENANCE
Inspect the probe and the cable. The cable used for the connection to the
meter must be intact and there must be no points of broken insulation
on the cable or cracks on the probe stem or bulb.
Connector must be perfectly clean and dry. If any scratches or cracks are
present, replace the electrode. Rinse off any salt deposits with water.
CLEANING PROCEDURE
For better accuracy in measurements and to ensure a good performance
of the probe, a frequent cleaning is recommended.
For this purpose, soak it in Hanna Instruments HI700661 Cleaning
Solution for 5 minutes.
Notes: • For particular dirt (as for example protein, oil or grease)
see the “Accessories” section for Hanna Instruments specific
solutions.
• After cleaning the probe, it is recommended to recalibrate
the meter. If it is not possible to calibrate, the probe has to
be replaced with a new one.
• For field applications, it is always recommended to keep a
spare probe handy. When anomalies are not resolved with
simple maintenance, change the probe and recalibrate the
meter.
PROBE MAINTENANCE

Hanna Instruments HI9811-5 Specifications

General

Range	0.0 to 14.0 pH 0 to 6000 µS/cm 0 to 3000 mg/L (ppm) 0.0 to 70.0 °C
Typical EMC Deviation	±0.1 pH ±2% f.s. µS/cm ±2% f.s. mg/L (ppm) ±0.5 °C
Conversion Factor	0.5
pH Calibration	Manual, 1-point through offset trimmer
EC/TDS Calibration	Manual, 1-point through slope trimmer
EC/TDS Temperature Compensation	Automatic from 0 to 70 °C (32 to 158 °F) with b=2%/°C
Resolution	0.1 pH 10 µS/cm 10 mg/L (ppm) 0.1 °C
Accuracy (@ 20 °C/68 °F)	±0.1 pH ±2% f.s. µS/cm ±2% f.s. mg/L (ppm) ±0.5 °C
Probe (included)	HI1285-5
Battery Type	1 x 9V alkaline
Battery Life	Approx. 450 hours of continuous use
Environment	0 to 50 °C (32 to 122 °F) 100% RH

Weight and Dimensions

Dimensions	145 x 80 x 36 mm (5.7 x 3.1 x 1.4”)
Weight	230 g (8.1 oz.)