Hanna Instruments HI9811-5 User Manual

10
For temperature compensation during calibration, please refer to the
following chart.
pH VALUES AT VARIOUS TEMPERATURES
TEMP pH VALUES
°C °F 4.01 6.86 7.01 9.18 10.01
0 32 4.01 6.98 7.13 9.46 10.32
5 41 4.00 6.95 7.10 9.39 10.24
10 50 4.00 6.92 7.07 9.33 10.18
15 59 4.00 6.90 7.05 9.27 10.12
20 68 4.00 6.88 7.03 9.22 10.06
25 77 4.01 6.86 7.01 9.18 10.01
30 86 4.02 6.85 7.00 9.14 9.96
35 95 4.03 6.84 6.99 9.11 9.92
40 104 4.04 6.84 6.98 9.07 9.88
45 113 4.05 6.83 6.98 9.04 9.85
50 122 4.06 6.83 6.98 9.01 9.82
55 131 4.08 6.84 6.98 8.99 9.79
60 140 4.09 6.84 6.98 8.97 9.77
65 149 4.11 6.84 6.99 8.95 9.76
70 158 4.12 6.85 6.99 8.93 9.75
For instance, if the buffer temperature is 25 °C, the display should
show pH4.0 or 7.0 or 10.0.
If the buffer temperature is 10 °C, the display should show pH4.0 or
7.0 or 10.1.

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.)