Hanna Instruments

Scientific Equipment

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HI-9910-2 Wall Mounted pH Controller

HI-9910-2 Wall Mounted pH Controller

HI-9910-2 Wall Mounted pH Controller

HI-9910-2 Wall Mounted pH Controller

Uses BNC connector pH electrodes
2 year manufacturer warranty
£614.90 (exc. VAT) £737.88 (inc. VAT)

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.

HI-9910-2 Wall Mounted pH Controller information

Hanna's extended description

Industrial Grade pH Controller with Single Set point and Proportional Dosage

The HI-9910 time cycle is adjustable from 0 to 90 seconds and the proportional band from 0.0 to 2.0 pH. Coarse, fine, offset and slope trimmers make accurate setting and calibration easy and convenient. A pump or electro valve 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. The 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.

BNC Connection – BNC is one of the most commonly used connector types in pH meters and electrodes. Compatible with any meter or electrode that uses BNC connectors.

Mains powered - All mains operated equipment is compatible with UK AC voltage and frequency – 230V, 50Hz.


Specifications list


Range - pH 0.00 to 14.00 pH
Resolution 0.01 pH
Accuracy - pH ±0.02 pH
Input Impedance 1012 Ohm
Calibration manual, 2 point, through trimmers on the front panel
Temperature Compensation Automatic from 0 to 50°C with Pt100 probe or manual from -10 to 80°C
Setpoint selectable from 0.00 to 14.00 pH
Recorder Output selectable at 0-20 mA or 4-20 mA (isolated)
Proportional Control adjustable from 0.0 to 2.0 pH and time cycle from 0 to 90 seconds
Dosing Contact 1 powered terminal for pH correction (115 or 240 V) Max. 2A, 1,000,000 strokes;
activated when pH > setpoint for acid dosage or when pH < setpoint for alkaline dosage
Alarm Relay 1, activated when pH varies more than a selectable value (0.5 to 2.5 pH) from setpoint
or when max dosage time (adjustable from 1 to 10 minutes) elapes
(isolated, Max 2A-240 V, resistive load, 1,000,000 strokes)
Power Supply 110/115 Vac ±10% or 220/240 Vac ±10%; 50/60 Hz
Environment -10 to 50° (14 to 122°F); RH max 95% non-condensing
Dimensions 221 x 181 x 86 mm (8.7 x 7.1 x 3.4")
Weight 1.6 kg (3.5 lb.)

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