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HI97761

HI97761

Portable ultra low range total chlorine photometer

Total chlorine ultra low range photometer

Product Overview

  • HI97761 is an advanced portable photometer for measuring ultra-low levels of total chlorine. The instrument provides a superior optical system that utilizes a reference detector and narrow band interference filters for extremely fast and repeatable measurements.

  • CAL Check instrument performance verification.

  • Tutorial mode for step-by-step instructions.

  • No warm-up time before measurement.

  • *Products classified as dangerous goods can only be shipped by ground transport.

  • 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.

  • If the meter is accidentally turned on, the auto-off feature extends battery life, giving you peace of mind and saving energy.

  • When battery level drops below 10%, a warning symbol will flash to indicate low battery. When low battery may affect your results, the meter will shut off to avoid erroneous readings caused by low battery.

  • Data logging

  • Missed a measurement? No need to worry, because your photometer automatically records the last 50 measurements. Use the log recall menu to view results instantly.

  • CAL CheckTM verification

  • Hanna's exclusive CAL CheckTM feature provides a stress-free, simple way to ensure your photometer is working properly. Simply insert the certified CAL CheckTM standards and let your meter guide you through verification. If your photometer is out of specification for any reason, simply calibrate it with your standards.

  • Advanced optical system

  • Light emitting diodes (LEDs) provide more light while using less power, and narrow band interference filters deliver 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. Internal optics are sealed from external dust, dirt, and water. In addition, it floats in case you drop the meter into 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 display fits comfortably in your hand for mobile testing, or sits on a table for benchtop use, providing at-a-glance readings from any angle, day or night. The included AA batteries provide a lifespan of more than 800 measurements.

  • We believe buying a meter should be simple. Your HI97761 photometer comes with many of the necessary accessories needed for successful measurement.

  • Each HI97761 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 total chlorine photometer kit (including CAL CheckTM standards) for the most economical testing option.

  • Each HI97761C is supplied with:

  • Sample cuvettes (2)

  • Sample caps (2)

  • Plastic stoppers (2)

  • ZERO‑CAL CheckTM cuvette A

  • HI97761B-CAL Check cuvette B for total chlorine ultra-low range

  • Cloth for wiping cuvettes

  • Scissors

  • Alkaline batteries: 1.5V AA (3)

  • Instruction manual

  • Instrument quality certificate

  • CAL CheckTM standards certificate

Specification Name Detail
sku HI97761
Chlorine, Total ULR Range 0.000 to 0.500 mg/L (as Cl2)
Chlorine, Total ULR Resolution 0.001 mg/L
Chlorine, Total ULR Accuracy ±0.020 mg/L ±3% of reading at 25 °C
Chlorine, Total ULR Method Adaptation of the EPA Method 330.5
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
Municipal Wastewater Treatment

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

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

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

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.