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Hanna pH Analog Controller with Dual Output and Self-Diagnostic Test – HI8711

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Hanna pH Analog Controller with Dual Output and Self-Diagnostic Test – HI8711

Name: Hanna pH Analog Controller with Dual Output and Self-Diagnostic Test – HI8711
Brand: Hanna
SKU: 71419
Price: 856.62 USD
Availability: InStock

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Category pH Controllers Brand Hanna Condition New

Specifications

Country of Origin	India
Brand	HANNA Instruments
Power Supply	115 or 230 Vac, 50/60 Hz
Dimensions	141 x 69 mm
pH Range	0.00 to 14.00 pH
pH Resolution	0.01 pH
pH Accuracy	±0.02 (0 to 100 °C), ±0.05 (-20 to 0 °C) (electrode); ±0.5% (transmitter) pH
Environment	-10 to 50 °C, RH max 95% non-condensing
Model	HI8711
Enclosure	Black anodized aluminium body, ABS splash-proof front cover
Weight	1 kg
Voltage Output	±5 Vcc
Product Condition	New
MPN	HI8711
Analog Input Signal	4 to 20 mA
Analog Output Signal	0-20 mA or 4-20 mA (isolated)
Over Dosing Control	Adjustable, from 5 min to 60 min with knob or disable by wire strap
Max Load for Amplified Electrodes	150 mA
Dosing Control	OFF/AUTO/ON with selection switch
pH Dosing Relay	2, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes
pH Alarm Tolerance Range	0.2 to 3.00 pH

Key Features

Dual output system controls both acid and alkaline dosing for precise pH management
Built-in auto-diagnostics checks calibration, electrode condition, and system performance
Advanced Fail Safe Alarm System ensures safe and reliable operation in industrial use
Selectable modes (manual ON/OFF and automatic) for flexible process control
Adjustable pH alarm range (0.2 to 3.00 pH) for accurate monitoring and alerts
Overtime dosing protection (5 to 60 minutes) prevents overuse and system damage
Compatible with both 115V and 230V power supply for versatile installation
High accuracy of ±0.02 pH ensures reliable measurement results
Strong and durable body with aluminum construction and splash-proof front panel
Compact size (141 x 69 mm) suitable for panel or wall mounting

Product Description

Hanna Instruments HI8711 pH Analog Controller offers robust monitoring and dosing solutions for demanding industrial and laboratory applications. This controller is equipped for simultaneous acid and alkaline dosing via its dual isolated relay outputs. With setpoints adjustable throughout the full pH range (0.00 to 14.00), it enables precise dosing in processes that require tight pH control.

Auto-diagnostic features continuously verify offset, slope calibration, and electrode contamination, ensuring reliable operation and minimizing downtime. Hanna’s Fail Safe Alarm System provides protection against power supply failure or signal interruptions, automatically alarming with a red LED indicator on the front panel.

Dual output relays for independent acid and alkaline dosing control.
Selectable dosing operations: manual ON/OFF or automatic control with clear indication.
0.2 to 3.00 pH alarm tolerance adjustable for customized process safety.
Auto-diagnostics support offset, slope, electrode deterioration checks for electrode health.
Overtime dosing protection adjustable from 5–60 minutes, or can be disabled.
Continuous backlight display and splash-proof enclosure for harsh environments.
Compatible with both 115V and 230V AC power supplies, 50/60 Hz.
Panel dimensions: 141 x 69 mm, body made of black anodized aluminium with ABS splash cover.

Applications include process control, industrial water treatment, chemical dosing systems, and laboratory automation. Set suitability for commercial, manufacturing, pharmaceutical, and environmental monitoring. The package includes the HI8711 controller unit. Explore more PH Controllers and laboratory monitoring instruments from Hanna Instruments and other leading brands in the EnvMart catalog.