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$893.00
In stock
HI8711 allows the selection of two set points with two independent outputs for acid and alkaline dosages.
Hanna’s exclusive Fail Safe Alarm System protects against problems caused by power supply failure or signal interruption, which are typical risks in industrial environments. An alarm condition is indicated by a red LED, located directly on the front panel of the controller.
The HI8711 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.
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. Moreover, you can choose the output configuration for connecting a recorder or a PLC, between 0-20 or 4-20 mA.
Built-in autodiagnostic functions enable the user to check and troubleshoot any malfunctions. The functions are made via front panel keys to isolate the cause of malfunction whether it is due to pH electrode contamination, internal offset circuit or the amplifier circuit.
Supports potential matching pin connection to avoid typical problems caused by grounding loop currents, such as progressive damage of the electrode, fluctuating measurements, and poor process regulation.
A removable, transparent splash-proof cover protects the front panel.
| Weight | 0.45 kg |
|---|---|
| Parameter | pH |
| pH Accuracy | ±0.02 pH (0 to 100 °C)/ ±0.05 pH (-20 to 0 °C) (electrode); ±0.5% (transmitter) |
| SKU | HI8711 |
| Name | pH Analog Controller with Dual Output and Self-Diagnostic Test – HI8711 |
| pH Range | 0.00 to 14.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.02 pH (0 to 100 °C)/ ±0.05 pH (-20 to 0 °C) (electrode); ±0.5% (transmitter) |
| pH Dosing Relay | 2, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes (not fuse protected) |
| pH Dosing Set Point | 0.00 to 14.00 pH |
| Dosing Control | OFF/AUTO/ON with selection switch |
| Over Dosing Control | Adjustable, from 5 min to 60 min with knob or Disable by wire strap – on rear panel |
| Analog Input Signal | 4 to 20 mA |
| Analog Ouput Signal | 0-20 mA or 4-20 mA (isolated) |
| Backlight | Continuous ON |
| Voltage Output | ±5 Vcc; 150 mA max load for amplified electrodes |
| Enclosure | Black anodized aluminium body; front and back with ABS; transparent splash-proof front cover |
| Power Supply | 115 or 230 Vac; 60/50 Hz |
| Environment | -10 to 50°C (14 to 122°F); RH max 95% non-condensing |
| Dimensions | 141 x 69 mm (5.6 x 2.7”) |
| Weight | 1 kg (2.2 lb.) |
To empower customers to achieve quality
by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
To empower customers to achieve quality by supplying intuitive, accurate, and reliable analytical instruments with exceptional customer service and value.
We take pride in every product we build. From an original idea, to a completed product ready for testing. We oversee every aspect of the manufacturing process. It is this level of attention to detail that sets us apart.
