Hanna HI 9910 PH Controllers

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Product Code: Hanna HI 9910 PH Controllers
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Hanna HI 9910 PH Controllers

HI 9910 is a pH controller with a single set point for proportional dosage of acid or alkaline solutions. Any pH electrode ending in a BNC connector can be directly attached to the controller. The proportional control can be fine tuned through two dials on the front panel. The time cycle is adjustable from 0 to 90 seconds and the proportional band from 0.0 to 2.0 pH. Coarse and fine as well as offset and slope trimmers make accurate setting and calibration easy and convenient. A pump or electrovalve can be wired directly to the controller and be powered through the terminals.

The HI 9910 also provides for an alarm relay. The alarm is activated when the measurements stray away from the set point by a predetermined value in the 0.5 to 2.5 pH range. A maximum dosing time from 1 to 10 minutes can also be set, after which the alarm is activated to warn of an abnormality. The alarm can be configured in either normally-closed or normally-opened state. HI 9910 also provides an isolated output signal which is user selectable between 0-20 or 4-20 mA. A dial on the front panel renders manual temperature compensation fast and easy.

For automatic temperature compensation, hook up a three wire Pt100 to the controller. To speed up wiring, the HI 9910 comes with extractable terminal modules. Once wired up, the compartment containing the connections is protected behind a fire-retardant ABS panel. Several LED's show whether the set point or alarm relays are activated from a distance.

Spesifikasi - Hanna HI 9910 PH Controllers

Range		0.00 to 14.00 pH
Resolution		0.01 pH
Accuracy @ 20°C		±0.02 pH
Calibration		through "OFFSET" and "SLOPE" trimmers (max. ±1.5 pH for offset and 80% to 110% for slope)
Temperature Compensation		automatic from 0 to 50°C with Pt100 probe or manual from -10 to 80°C
Setpoint		from 0.00 to 14.00 pH with "COARSE" and "FINE" trimmers with "ACID" or "ALK" (alkaline) selection
mA Output		user selectable 0 to 20 mA or 4 to 20 mA over the 0-14 pH range with isolated output
Proportional Control		pH is user adjustable from 0.0 to 2.0 and time cycle from 0 to 90 seconds
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 set point or due to overdosage
Dosing Terminals		relay terminals (115 to 240V, max.2A,1,000,000 strokes) are activated when pH exceeds the set point with “ACID” dosage or falls below the set point with “ALK” selection (alkaline dosage)
Power Supply		±10% 115 VAC or 230 VAC; 50/60 Hz
Environment		-10 to 50°C (14 to 122°F); RH max 95% non-condensing
Case Material		fiber-reinforced, self-extinguishing ABS
Dimensions		221 x 181 x 86 mm (8.7 x 7.1 x 3.4’’)
Weight		1.6 kg (3.5 lb.)

PH Meter, Thermo, Hanna, Pocket

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