Description

An Advanced Portable Photometer for Water

The Hanna HI97738 Chlorine Dioxide Photometer is a sophisticated and portable device designed for the precise measurement of chlorine dioxide in water. It features a superior optical system that employs a reference detector and narrow band interference filters to ensure extremely fast and repeatable readings. This advanced system eliminates errors caused by changes in the light source and imperfections in the glass cuvette, and it does not require any warm-up time before a measurement is taken. The device is built to be robust, with an IP67-rated waterproof and floating case that can withstand real-life knocks, drops, and spills. Its internal optics are completely sealed from outside dust, dirt, and water, ensuring reliable performance in any environment. The photometer also incorporates an exclusive positive-locking system, which guarantees that the cuvettes are always placed in the exact same position for consistent and accurate results every time. Its compact and ergonomic design makes it suitable for both on-the-go testing and benchtop use, with a backlit LCD display for easy reading in any lighting condition.

Enhanced Usability and Reliability

The HI97738 photometer is equipped with several features that enhance its usability and reliability. A built-in tutorial mode with on-screen animations guides users step-by-step through the measurement process, making it simple to operate. For peace of mind, the exclusive CAL Check™ feature allows users to validate the instrument’s performance at any time using NIST traceable standards. It also automatically logs the last 50 measurements , which can be viewed instantly, ensuring that no data is lost. The built-in timer guarantees consistency between tests , and a battery status indicator along with an auto-off feature helps to prolong battery life. This photometer is an ideal tool for monitoring chlorine dioxide, which is widely used as a highly effective and environmentally friendly disinfectant in drinking water and various industrial processes , as it does not produce harmful disinfection byproducts like trihalomethanes.

Specifications

Feature	Details
Chlorine Dioxide Range	0.00 to 2.00 mg/L (ppm)
Chlorine Dioxide Resolution	0.01 mg/L
Chlorine Dioxide Accuracy	±0.10 mg/L ±5% of reading @ 25°C (77°F)
Method	Adaptation of the chlorophenol red method
Light Source	Light-emitting diode
Bandpass Filter Wavelength	575 nm
Bandpass Filter Bandwidth	8 nm
Light Detector	Silicon photocell
Cuvette Type	Round, 24.6 mm diameter (22 mm inside)
Auto Logging	Up to 50 readings
Display	128 x 64 pixel B/W LCD with backlight
Auto-off	After 15 minutes of inactivity (30 minutes before a READ measurement)
Battery Type	Three 1.5V AA alkaline batteries
Battery Life	> 800 measurements (without backlight)
Environment	0 to 50°C (32 to 122°F); 0 to 100% RH, non-condensing
Dimensions	142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0″)
Weight	380 g (13.4 oz.)