7
SPEC
iFi
CA
TiONS
4. SPECIFICATIONS
Meter
pH
Range*
0.0 to 14.0 pH
Resolution
0.1 pH
Accuracy
±0.1 pH (@ 25 °C / 77 °F)
Calibration
Manual, 1-point
EC
Range*
0.00 to 4.00 mS/cm
Resolution
0.01 mS/cm
Accuracy
±2% f.s. mS/cm (@ 25 °C / 77 °F)
Calibration
Manual, 1-point
Temp. compensation Automatic from 0 to 70 °C with ß=2% / °C
TDS
Range*
0 to 1999 ppm
Resolution
1 ppm
Accuracy
±2% f.s. ppm (@ 25 °C / 77 °F)
Calibration
Manual, 1-point
Temp. compensation Automatic from 0 to 70 °C with ß=2% / °C
Conversion factor
Variable, automatically adjusted from
0.56 to 0.78 based on actual EC readings
(based on 442 curve for natural water)
Temperature
Range*
0.0 to 70.0 °C
Resolution
0.1 °C
Accuracy
±0.5 °C
Probe (included)
HI1285-51
for
HI9813-51
HI1285-61
for
HI9813-61
Battery life
Approximately 150 hours of continuous use
Auto shut-off
After 8 minutes of non-use
Battery type
1 x 9V Alkaline
Environment
0 to 50 °C (32 to 122 °F); 100% RH
Dimensions
145 x 80 x 36 mm (5.7 x 3.1 x 1.4 “)
Weight
230 g (8.1 oz.)
* The range may be limited by the probe’s limits.
