Product Overview
HI97741 is an advanced portable photometer for measuring hardness (calcium, magnesium and total hardness) and iron in water. The instrument offers a superior optical system that uses a reference detector and narrow band interference filters for extremely fast and repeatable measurements.
Key Features
- CAL Check performance verification: for meter performance verification.
- Tutorial mode: for step-by-step instructions.
- Results in multiple chemical forms: displays results in multiple chemical forms.
- Better features, better testing: let your photometer guide you through setup, calibration and testing with on-screen tutorials and animations so you always know the next step. Simply use the dedicated help key to access tutorial mode at any stage of the setup or measurement process.
- Auto-off: if the meter is accidentally left on, the auto-off function extends battery life, giving you peace of mind and saving energy. When the battery charge drops below 10%, a warning symbol flashes to indicate low battery. When low battery could affect your results, the meter shuts down to avoid erroneous readings caused by low battery.
- Data logging: missed a measurement? No need to worry, because your photometer automatically logs the last 50 measurements. Use the log recall menu to view the results immediately.
- CAL Check™ verification: Hanna's exclusive CAL Check™ feature provides a stress-free, simple way to make sure your photometer is working properly. Simply insert the certified CAL Check™ standards and let your meter guide you through verification. If your photometer is out of specification for any reason, simply calibrate it to your standards.
- Advanced optical system: light emitting diodes (LEDs) provide more light while using less power, and a narrow band interference filter delivers more accurate and repeatable readings.
- Built better: the new IP67-rated body design withstands real-life impacts, drops and spills, ensuring maximum performance in any environment. The internal optics are sealed against outside dust, dirt and water. It even floats, in case you drop the meter in water. The photometer uses a dedicated positive locking system to ensure the cuvette is placed in the same position in the holder every time for accurate readings.
- Portable design: the backlit LCD sits comfortably in the hand for mobile testing or on a table for benchtop use, providing at-a-glance readings from any angle, day or night. The supplied AA batteries provide a lifetime of more than 800 measurements.
Important Notes
*Products classified as dangerous goods can only be shipped by ground.
What's in the Box
We believe buying a meter should be simple. Your HI97741 photometer comes with many of the accessories you need for successful measurements.
Each HI97741 is supplied with:
- Sample cuvettes (2)
- Sample caps (2)
- Plastic stoppers (2)
- Alkaline batteries: 1.5V AA (3)
- Instruction manual
- Instrument quality certificate
Upgrade to the photometer kit (including CAL Check™ standards) for the most economical testing option.
Each HI97741C is supplied with:
- Sample cuvettes (2)
- Sample caps (2)
- Plastic stoppers (2)
- Alkaline batteries: 1.5V AA (3)
- Instruction manual
- Instrument quality certificate
- ZERO-CAL Check™ Cuvette A
- HI97719B-CAL Check Cuvette B for magnesium and total hardness
- HI97746B-CAL Check Cuvette B for low range iron
- Cloth for wiping cuvettes
- Scissors
- Alkaline batteries: 1.5V AA (3)
- Instruction manual
- Instrument quality certificate
- CAL Check™ standards certificate
Specifications
| Specification Name | Detail |
|---|---|
| SKU | HI97741 |
| Hardness, Calcium Range | 0.00 to 2.70 mg/L (as CaCO3) |
| Hardness, Magnesium Range | 0.00 to 2.00 mg/L (as CaCO3) |
| Hardness, Total Range | 0.00 to 4.70 mg/L (as CaCO3) |
| Hardness, Total Resolution | 0.01 mg/L |
| Hardness, Total Accuracy | ±0.11 mg/L ±5% of reading at 25 °C |
| Hardness, Total Method | Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th Edition, Colorimetric Method |
| Iron, LR Range | 0.00 to 1.60 mg/L (as Fe) |
| Iron, LR Resolution | 0.01 mg/L |
| Iron, LR Accuracy | ±0.01 mg/L ±8% of reading at 25 °C |
| Iron, LR Method | Adaptation of the TPTZ Method |
| Light Source | light emitting diode |
| Light Detector | Silicon photocell |
| Bandpass Filter Bandwidth | 8 nm |
| Bandpass Filter Wavelength Accuracy | ±1.0 nm |
| Logging | 50 readings (auto logging) |
| Auto-off | After 15 minutes of inactivity (30 minutes before a READ measurement) |
| Environment | 0 to 50 °C (32 to 122 °F); 0 to 100% RH, non-serviceable |
| Dimensions | 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0") |
| Weight | 380 g (13.4 oz.); with batteries |
| Warranty | 2 years |
Case Studies
Municipal Wastewater Treatment · Hanna — Stock Configuration Case
Project Overview
The site is the inlet, biological and outlet stages of a municipal plant. The customer wanted Hanna properly configured on the existing plant, with the aim of covering portable and laboratory water testing with Hanna instruments.
Technical Challenges
What actually causes trouble is high solids and corrosive fractions, with large diurnal flow swings, and effluent parameters drift and probes foul with sludge and biofilm. All of this means the Hanna configuration has to involve selected by parameter set, accuracy and field portability.
Configuration
Supply and installation were organised through the stock channel: configuring from stock and delivered quickly. On site this meant selected by parameter set, accuracy and field portability, checked line by line against: stable compliance with Grade 1A discharge limits and online data reporting.
Performance
After commissioning the outcome is results available on site, reducing lab re-checks, and the readings are now used for process tuning.
Food & Beverage · Hanna — Stock Configuration Case
Site Conditions
This is a Food & Beverage customer whose plant is at dosing, pasteurising, filling and CIP stages. The main task was covering portable and laboratory water testing with Hanna instruments.
The Problem
The difficulty lies in syrups, dairy and beverages that scale easily, under strict hygienic requirements; at the same time frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. Specification therefore means selected by parameter set, accuracy and field portability.
What We Did
We took a stock channel approach — configuring from stock and delivered quickly. Delivery was built around selected by parameter set, accuracy and field portability, with point-by-point checks on: food-safety and hygienic design per 3-A / EHEDG.
Operating Outcome
In service the system performs as intended — results available on site, reducing lab re-checks, with routine maintenance falling noticeably.
Chemical & Pharmaceutical · Hanna — Stock Configuration Case
Application Context
reactors, metering vessels and finished-product tanks is a typical Chemical & Pharmaceutical duty. The project started from Hanna, focusing on covering portable and laboratory water testing with Hanna instruments.
Process Constraints
corrosion plus Ex protection shortens instrument life and makes downtime costly, and highly corrosive media with solvents and crystallisation, partly in explosive atmospheres only amplify it. The Hanna specification must therefore cover selected by parameter set, accuracy and field portability.
Delivery Approach
Delivery was handled as the stock channel — configuring from stock and delivered quickly. Execution centred on selected by parameter set, accuracy and field portability, together with Ex certification and GMP traceability of records.
Field Results
Operation shows the benefit clearly — results available on site, reducing lab re-checks, with confidence in this measuring point improving markedly.
Power & Energy · Hanna — Stock Configuration Case
Customer Profile
The typical setting in Power & Energy is boiler feedwater, turbine condensate and FGD/DeNOx systems. The measuring point is Hanna; the focus is covering portable and laboratory water testing with Hanna instruments.
Key Difficulties
Conditions are high temperature and pressure with both steam and saline water and, on top of that, drift under high temperature and pressure, with very costly unplanned outages, which a standard configuration cannot handle for long. The design therefore starts with selected by parameter set, accuracy and field portability.
Implementation
The scope ran through the stock channel: configuring from stock and delivered quickly. Technically it hinges on selected by parameter set, accuracy and field portability, and on these requirements: compliance with power-industry codes and unit availability targets.
Customer Benefit
In practice this means results available on site, reducing lab re-checks, which cut the workload on the site maintenance team.
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