Hanna HI991003 Waterproof Portable pH/mV/ORP/Temperature Meter | Sensor Check
The Hanna Instruments HI991003 is a state-of-the-art portable pH/pH-mV/ORP/Temperature meter, engineered to provide precise and reliable measurements in various demanding environments. This compact and waterproof unit is a comprehensive solution for professionals requiring accurate data for field applications, environmental monitoring, wastewater analysis, and industrial use, including manufacturing and plating baths. Its user-friendly design and advanced features make it an indispensable tool for consistent and high-quality analytical testing.
Key Features and Benefits
• Multi-Parameter Measurement: The HI991003 measures pH, pH-mV, ORP (Oxidation Reduction Potential), and temperature, offering versatility for a wide range of testing needs.
• Waterproof and Durable Design: With an IP67 rating, this meter is built to withstand harsh conditions, protected against dust and water intrusion. It is also designed to float if accidentally dropped in liquid, ensuring its safety and longevity.
• Sensor Check™ Diagnostics: A unique Sensor Check™ feature provides real-time diagnostics, allowing users to assess the electrode's status at any time. An on-screen indicator visually confirms the probe's optimal performance, ensuring reliable measurements.
• Intuitive Dual-Level LCD Display: The large, multi-level LCD simultaneously displays pH/pH-mV/ORP and temperature readings. It also provides indicators for calibration status, reading stability, and helpful on-screen tutorial messages for streamlined operation.
• Automatic Two-Point Calibration: Calibration is simplified with automatic one or two-point calibration using selectable buffer sets, including standard (pH 4.01, 7.01, 10.01) or NIST (pH 4.01, 6.86, 9.18) options.
• Automatic Temperature Compensation (ATC): All measurements are automatically compensated for temperature variations, with temperature readings displayed in both Celsius and Fahrenheit for user convenience.
• Reading Stability and Hold Function: A stability indicator (clock icon) disappears once readings are stable, ensuring accurate data capture. The hold button allows users to freeze the measurement on the display for easy recording.
• Advanced Battery Management: The meter features a Battery Error Prevention System (BEPS) which automatically shuts off the unit if battery power is insufficient for accurate readings. A battery percentage level is displayed at startup, and a low battery alert blinks when the level drops below 5%. The auto-off feature can be set for 8 or 60 minutes of inactivity, or disabled, to maximize battery life.
• Extended Battery Life: Enjoy approximately 1400 hours of continuous use on a single set of batteries, minimising interruptions during prolonged field work.
HI12973 pH/ORP/Temperature Probe
The HI991003 is supplied with a specialised HI12973 (or HI1297D) pre-amplified pH/ORP/temperature probe. This probe boasts several key advantages:
• Titanium Body: The robust titanium body protects the electrode from accidental breakage and is highly resistant to aggressive chemicals commonly found in plating and chemical manufacturing. It also acts as a matching pin, effectively reducing the impact of electrical noise from external sources such as rectifiers, motors, and ballasts on high-impedance pH measurements.
• Platinum ORP Sensor: The integrated platinum ORP sensor provides optimal response across a wide spectrum of applications.
• Extractable Cloth Junction: This unique feature allows users to easily renew the junction by pulling out a small portion of the cloth material, exposing a fresh, uncontaminated surface. This helps clear any clogging and restores normal response time, significantly extending the probe's lifespan.
• Built-in Temperature Sensor: The probe includes an internal temperature sensor, enabling seamless automatic temperature compensation for precise readings.
Comprehensive Kit Contents
The Hanna HI991003 comes complete in a rugged plastic carrying case, thermoformed to securely hold all necessary components for immediate measurement, including:
• HI991003 Meter unit with dual-level LCD display
• HI12973 (or HI1297D) titanium-body, pre-amplified pH/ORP/temperature probe with quick-connect or DIN connector and 1-meter cable
• pH 4.01 & pH 7.01 Calibration buffer sachets
• Electrode cleaning solution sachets (HI700601 or similar)
• 100 mL plastic beaker for calibration and testing
• 3 x 1.5V AAA alkaline batteries
• Rugged carrying case for protection and portability
• Calibration certificate for the meter
• Calibration certificate for the probe
• Instruction manual
Applications
The Hanna HI991003 is an ideal portable meter for various field and laboratory applications, including:
• Environmental monitoring
• Wastewater analysis
• Industrial process control
• Manufacturing quality control
• Plating bath analysis
Technical Specifications
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Parameter
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Specification
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Model
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HI991003
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Measurement Parameters
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pH, pH-mV, ORP, Temperature
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pH Range
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-2.00 to 16.00 pH
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pH Resolution
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0.01 pH; 0.1 pH
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pH Accuracy
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±0.02 pH; ±0.1 pH
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pH Calibration
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Automatic, 1 or 2 points with selectable buffers: Standard (4.01, 7.01, 10.01) or NIST (4.01, 6.86, 9.18)
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pH Temperature Compensation
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Automatic, -5.0 to 105.0 °C (23.0 to 221.0 °F)
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pH Electrode Diagnostics
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Sensor Check™; Probe condition indicator
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ORP Range
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±1999 mV
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ORP Resolution
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1 mV
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ORP Accuracy
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±2 mV
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pH-mV Range
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±825 mV
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pH-mV Resolution
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1 mV
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pH-mV Accuracy
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±1 mV
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Temperature Range
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-5.0 to 105.0 °C (23.0 to 221.0 °F)
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Temperature Resolution
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0.1 °C / 0.1 °F
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Temperature Accuracy
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±0.5 °C up to 60 °C; ±1.0 °C outside / ±1.0 °F up to 140 °F; ±2.0 °F outside
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Probe
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HI12973 (or HI1297D) titanium body, pre-amplified pH/ORP probe with internal temperature sensor, quick connect DIN connector and 1m cable
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Automatic Shut-Off
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User selectable: 8 min, 60 min, or disabled
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Battery Type/Life
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3 x 1.5V AAA batteries / Approximately 1400 hours continuous use
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IP Protection
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IP67 (Water and dust resistant)
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Operating Environment
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0 to 50 °C (32 to 122 °F); RH max 100%
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Dimensions
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154 x 63 x 30 mm (6.1 x 2.5 x 1.2 in)
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Weight
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199 g (6.91 oz) with batteries
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Warranty
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2 years (meter); probe warranty may vary
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Certifications
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Calibration certificates included for meter and probe
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