Hanna Instruments HI 9910 - Manual (Page 11)

11
Specifications HI 9911
RANGE 0.00 to 14.00 pH
RESOLUTION 0.01 pH
ACCURACY ±0.02 pH
(@20°C/68°F)
TYPICAL EMC
±0.1 pH
DEVIATION
mA OUTPUT
User-selectable 0 to 20 mA or 4 to 20 mA
over the 0-14 pH range with isolated output
CALIBRATION Through "OFFSET" and "SLOPE" trimmers
(Max. ±1.5 pH for offset and 80% to 110% for slope)
SETPOINT
RANGE
PROPORTIONAL pH is user adjustable from 0.0 to 2.0 and
CONTROL time cycle from 0 to 90 seconds
DOSING TERMINALS Two sets of independent relay terminals (115 to 240V,
Max.2A, 1,000,000 strokes) are activated whenever pH
exceeds the “ACID” setpoint or falls below the “ALK”
setpoint (Alkaline dosage)
ENVIRONMENT -10 to 50 °C (14 to 122 °F)
max. 95% RH non-condensing
WEIGHT 1.6 Kg (3.5 lb.)
ENCLOSURE 181 x 221 x 142mm (7.1 x 8.7 x 5.6")
CASE MATERIAL Fiber-reinforced, self-extinguishing ABS
POWER SUPPLY 220/240V or110/115V at 50/60Hz
From 0.00 to 14.00 pH with 2 trimmers: "COARSE"
for approx. regulation, "FINE" for fine tuning.
TEMPERATURE
COMPENSATION Manual from -10 to 80 °C (14 to 176 °F) or automatic
with 3-wire Pt 100 probe from 0 to 50 °C (32 to 122 °F)
ALARM
CONTACT
Terminals can be configured as normally open or
normally closed (isolated output Max. 2A, Max.
240V, resistive load, 1,000,000 strokes). The alarm
is activated if pH varies by more than user-selectable
interval (0 to 2 pH) from setpoint or due to
overdosage