Hanna Instruments HI 9910 - Manual (Page 8)

8
Specifications HI 9910
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 From 0.00 to 14.00 pH with "COARSE" and "FINE"
RANGE trimmers with "ACID" or "ALK" (alkaline) selection
PROPORTIONAL pH is user adjustable from 0.0 to 2.0 and
CONTROL time cycle from 0 to 90 seconds
DOSING TERMINALS Relay terminals (115 to 240V, Max.2A,1,000,000
strokes) are activated when pH exceeds the setpoint with
“ACID” dosage or falls below the setpoint with “ALK”
selection (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
TEMPERATURE
COMPENSATION Manual from -10 to 80 °C (14 to 176 °F) or
automatic with a 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