9
HI98191 SPECIFICA
TIONS
pH
Range
‑2.0 to 20.0 pH / ‑2.00 to 20.00 pH / ‑2.000 to 20.000 pH
Resolution
0.1 pH / 0.01 pH / 0.001 pH
Accuracy
±0.1 pH / ±0.01 pH / ±0.002 pH
mV
Range
±2000 mV
Resolution
0.1 mV
Accuracy
±0.2 mV
ISE
Range
From 1.00 E
‑7
to 9.99 E
10
concentration
Resolution
3 digits 0.01, 0.1, 1, 10 concentration
Accuracy
±0.5% of reading (monovalent ions)
±1% of reading (divalent ions)
Temperature
‑20.0 to 120.0 °C (‑4.0 to 248.0 °F)
Rel mV Offset Range
±2000 mV
pH Calibration
Up to five point calibration, seven standard buffers available
(pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45), and five custom
buffers
Slope Calibration
From 80 to 110%
ISE Calibration
Up to five point calibration points six standard solutions
available
(0.1, 1, 10, 100, 1000, 10000 ppm)
Temperature Compensation Manual or Automatic from ‑20.0 to 120.0 °C (‑4.0 to 248.0 °F)
pH Electrode
HI72911B pH & temperature (included)
LOG
On demand, 300 samples (log samples on each range)
Input Impedance
10¹² Ω
Battery Type/Life
1.5V AA batteries (4 pcs.) / approx. 200 hours of continuous use
without backlight (50 hours with backlight)
Auto Power Off
User selectable: 5, 10, 30, 60 minutes or disabled
PC Interface
opto‑isolated USB
Dimensions
185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)
Weight
400 g (14.2 oz)
Environment
0 to 50 °C (32 to 122 °F) max. RH 100% IP67