PH Kontrol Hanna HI 8711

• Inputs: BNC connector,  Direct wire connection with amplified probe (supports HI 1006 series probes) and 4-20 mA from a transmitter
• Auto-diagnostics to verify offset and slope calibration and electrode contamination/deterioration
• Selectable manual ON, OFF and automatic dosing control for alkaline, acid and REDOX dosing with indicator
• Dual set point with two independent dosing outputs
• Extended temperature compensation range: -20 to 100°C
• Supports potential matching pin connection
• Both 4-20 and 0-20 mA output
• ±5V outputs for amplified electrodes
• Fail Safe Function–the alarm relay is activated at power down
• Operational mode LED indicators
• Backlit LCD
• Transparent splash-proof cover

HI 8711 allows the selection of two set points with two independent outputs for acid and alkaline dosages.

Each model accepts either a direct input from a pH or ORP electrode or from a transmitter through 4-20 mA input. The instrument also provides ±5V power output and input terminals for amplified electrodes. In addition, you can choose the output configuration for connecting a recorder or a PLC, between 0-20 or 4-20 mA.

The HI 8711 incorporates adjustable overtime dosing protection from 5 to 60 minutes. If dosing exceeds selected time, the alarm will be triggered and the dosing contact will deactivate. This feature can be activated or deactivated.

Order Information:
The HI 8711 is supplied with mounting brackets and instructions.