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Hanna ORP Analog Controller with Self-Diagnostic Test – HI8720
Specifications
| Country of Origin | India |
|---|---|
| Power Supply | 115 or 230 Vac, 50/60 Hz |
| Dimensions | 141 x 69 mm |
| Environment | -10 to 50 °C, RH max 95% non-condensing |
| mV Accuracy | ±0.5% |
| mV Resolution | 1 mV |
| mV Range | ±1000 mV |
| Model | HI8720 |
| Alarm Relay Set Point | 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes |
| Enclosure | Black anodized aluminum, ABS transparent splash-proof front cover |
| Weight | 1 kg |
| Backlight | Continuous ON |
| Product Condition | New |
| MPN | HI8720 |
| Alarm Relay Range | 10 to 300 mV |
| Analog Input Signal | 4 to 20 mA |
| Analog Output Signal | ±5 Vcc, 150 mA max load (amplified electrodes) |
| Over Dosing Control | Adjustable, 5–60 min or disable by rear panel wire strap |
| mV (ORP) Calibration | Offset: ±2 pH with OFFSET trimmer, Slope: 80–110% with SLOPE trimmer |
| mV (ORP) Dosing Relay | 1, isolated, 2 A, Max 240 V, resistive load, 1000000 strokes |
| mV (ORP) Dosing Set Point | 0.00 to 14.00 pH |
Key Features
HI8720 ORP Analog Controller with Self-Diagnostic Test is ideal for panel mounting and industrial process control applications.
- Features a built-in auto-diagnostic test for continuous electrode and instrument status monitoring.
- Allows selection of set points for controlling oxidizing or reducing dosage operations.
- Includes isolated alarm and dosing relay contacts for safety and process flexibility.
- Displays measured ORP values clearly on an easy-to-read LCD display with continuous backlight.
- Offers adjustable overdosing control from 5 to 60 minutes via a rear panel knob.
- Equipped with a removable, transparent splash-proof cover protecting the front panel.
- Supports analog input/output signals (4–20 mA, ±5 Vcc) suitable for process integration.
- Robust housing combining black anodized aluminum and ABS front protection.
- Operates within a wide environment range (-10 to 50 °C, up to 95% RH, non-condensing).
Product Description
HI8720 ORP Analog Controller with Self-Diagnostic Test is a high-performance instrument designed for precise monitoring and control of oxidation-reduction potential in industrial settings. Panel-mounted for integration into control systems, it offers advanced self-diagnostic features accessed via front panel keys, allowing users to identify and isolate malfunctions for uninterrupted operation.
The controller supports selection of oxidizing or reducing set points, with consent relay contacts enabling coordinated control when combined with pH controllers. Isolated alarm and dosing relays (2A, max 240V) ensure safe switching with high stroke durability. Continuous LCD backlighting guarantees visibility in any condition, while the adjustable overdosing control enhances process safety.
- Built-in autodiagnostic functions for user-friendly troubleshooting and maintenance.
- Selectable set points for oxidation/reduction dosage processes.
- Isolated alarm relay and dosing relay contacts rated at 2A, max 240V.
- Analog input and output signals: 4–20 mA and ±5 Vcc, 150 mA max load, suitable for amplified electrodes.
- Robust enclosure: black anodized aluminum body with transparent ABS splash-proof front cover.
- Operating environment: -10 to 50°C, RH max 95% non-condensing.
- Overdosing control adjustable from 5 to 60 minutes, with disable option via wire strap.
- LCD display with continuous backlight for clear measurement readout.
- Calibration: offset and slope trimmers for precision adjustment.
- Accurate ORP measurement range: ±1000 mV, 1 mV resolution, ±0.5% accuracy.
HI8720 suits applications in water treatment plants, chemical manufacturing, environmental laboratories, and industrial process automation where reliable ORP control is essential. The rugged housing ensures longevity in challenging industrial environments.
Browse more advanced industrial controllers, process instruments, and laboratory automation solutions in the EnvMart category to optimize your process monitoring setup.
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