Hanna Instruments (M) Sdn Bhd
11A, Jalan PJS 11/20,
Bandar Sunway,
46150 Petaling Jaya,
Selangor, Malaysia.
11A, Jalan PJS 11/20,
Bandar Sunway,
46150 Petaling Jaya,
Selangor, Malaysia.
+603-5638 9940
Penang Branch Office
Hanna Instruments (M) Sdn Bhd
N0. 303-2-27, Krystal Point,
Jalan Sultan Azlan Shah,
11900 Sungai Nibong,
Penang, Malaysia.
+604-638 4558
+604-645 4558
penang@hannamalaysia.com
Sabah Branch Office
Hanna Instruments (M) Sdn Bhd
No. 4-1, 1st Floor,
Plaza Kingfisher,
Jalan Plaza Kingfisher 5,
Inanam, 88450 Kota Kinabalu,
Sabah, East Malaysia.
088-382 941
088-382 942
sabah@hannamalaysia.com
Hanna Instruments (M) Sdn Bhd
N0. 303-2-27, Krystal Point,
Jalan Sultan Azlan Shah,
11900 Sungai Nibong,
Penang, Malaysia.
+604-638 4558
+604-645 4558
penang@hannamalaysia.com
Sabah Branch Office
Hanna Instruments (M) Sdn Bhd
No. 4-1, 1st Floor,
Plaza Kingfisher,
Jalan Plaza Kingfisher 5,
Inanam, 88450 Kota Kinabalu,
Sabah, East Malaysia.
088-382 941
088-382 942
sabah@hannamalaysia.com
HI8710 pH Analog Controller with Self-Diagnostic Test
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1.5 kg
HI8710 is a panel mounted pH controller with self-diagnostic test capabilities. Users can set: the setpoint for acid or alkaline dosage, the tolerance of the setpoint before an alarm is activated, the dosage mode: automatic, continuous on or OFF and the over dosage control by setting the overtime dosage knob.
- Hanna’s exclusive Fail Safe Fail Safe Alarm System protects against problems caused by power supply failure or signal interruption, which are typical risks in industrial environments.
- Temperature compensation ensures fast, accurately compensated readings even during sudden temperature fluctuations.
- Backlit, LCD display for easy viewing.
Fail Safe Alarm System
- 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.
Automatic Temperature Compensation
- A 2-wire Pt100 can be connected to provide automatic temperature compensation of the pH measurements.
Overtime Dosage
- “Overtime dosage” function with selection knob and jumper for disable on the rear panel. If the dosing relay remains continuously activated for more than selected dosing time the alarm relay is activated, the alarm LED is blinking and the dosing relay is deactivated.
Matching Pin Connection
- Supports potential matching pin connection to avoid typical problems caused by grounding loop current, such as progressive damage of the electrode, fluctuating measurements, and poor process regulation.
ORP Dosing Consent Device
- When used in conjunction with the HI8720 ORP controller, the ORP Dosing Consent Device function will ensure that the ORP dosage will start only when the pH level is correct.
Robust Design
- A removable, transparent splash-proof cover protects the front panel.
-
pH
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); ±0.5% (input from transmitter) pH Calibration offset: ±2 pH with OFFSET trimmer; slope: 80 to 110% with SLOPE trimmer pH Temperature Compensation fixed or automatic with Pt100, from -20 to 100°C (-4 to 212°F) pH Input impedence high impedance 10¹² Ohm; reference and matching pin inputs are available 4-20 mA Process Control Meter
Alarm Relay Set Point 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected) Alarm Relay Range 0.2 to 3.00 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 Consent Relay 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected) Backlight continuous on Voltage Output ±5 Vcc; 150 mA max load for amplified electrodes Enclosure flame retardant ABS body and front panel; transparent splash-proof front cover Panel Cutout 141 x 69 mm (5.6 x 2.7’’) Recorder Output 0-20 mA or 4-20 mA (isolated) Set Point 1, isolated, 2 A, max 240 V, resistive load, 1000000 strokes (not fuse protected); range: 0.00 to 14.00 pH Power Supply 230 VAC ±10%; 50/60 Hz Environment -10 to 50°C (14 to 122°F); RH max 95% non-condensing Weight 1 kg (2.2 lb.) Ordering Information The HI8710 is supplied complete with mounting brackets and instructions.