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Handheld Water Quality Tetranitrogen Detector

Product Number：

HM-S4N

Product Price:

$1090

Product Difference：

Compact handheld field analyzer for on-site four-nitrogen testing, equipped with a 3.5-inch touchscreen, an integrated digestion-colorimetry tube, and a 5600mAh rechargeable lithium battery.

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Product Details

Four-nitrogen water quality analyzer series with handheld instrument

Android touchscreen colorimetry network storage and printing features

Water and wastewater four-nitrogen testing application examples

HM-T4N benchtop and HM-S4N handheld model configurations

Ammonia nitrate nitrite and total nitrogen methods and ranges

HM-S4N handheld four-nitrogen analyzer features

HM-T4N 10.1-inch touchscreen interface

Benchtop analyzer colorimetric cell for tubes and cuvettes

Built-in thermal printer for benchtop test records

HM-S4N and HM-T4N technical specification comparison

Hengmei company and staff group photograph

Hengmei laboratory facilities and instrument application scenes

Product Overview

HM-S4N is a compact, handheld water quality analyzer engineered for rapid on-site screening and emergency monitoring of Ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, total nitrogen in water bodies. Designed in accordance with national testing standards and environmental regulations, the instrument delivers lab-grade quantitative results directly at the sampling site.

Featuring an Android intelligent operating system and a responsive 3.5-inch color LCD touch screen, the analyzer weighs only 325 g and houses a 5600 mAh rechargeable lithium battery. Its circular φ16 mm colorimetric tube design allows operators to perform fast, sealed photometric measurements in the field.

Key Features

Lightweight handheld structure weighing just 325 g with compact 190×77×72 mm dimensions for effortless one-handed outdoor operation.
Optical design compatible with standard φ16 mm circular tubes, simplifying the on-site measurement workflow.
Android intelligent operating system with intuitive graphical UI and guided on-screen testing instructions requiring minimal training.
3.5-inch high-resolution color LCD touch screen delivering crisp visibility of absorbance and concentration values in direct outdoor light.
Imported cold light source with automatic wavelength selection and an operating lifespan of up to 100,000 hours.
High optical sensitivity with an absorbance resolution of 0.001 and repeatability/stability < 0.5%.
Built-in 5600 mAh rechargeable lithium battery supporting up to 8 hours of continuous field operation with DC 5V Type-C charging.
Robust internal memory storing over 80,000 complete test records with date, time, and testing parameters.
Wireless data synchronization via Wi-Fi and Bluetooth to cloud monitoring platforms, with optional portable Bluetooth thermal printing.

Applications

HM-S4N is documented for water and wastewater testing across diverse monitoring scenarios, including municipal sewage treatment plants, industrial wastewater management, river basin and lake surface water monitoring, aquaculture water control, brewing and fermentation processes, petrochemicals, metallurgy, papermaking, and pharmaceutical effluent compliance.

Technical Specifications

Parameter	Specification
Detection Items	Ammonia Nitrogen, Nitrate Nitrogen, Nitrite Nitrogen, Total Nitrogen
Ammonia Nitrogen Range	0.05–200 mg/L (segmented)
Nitrate Nitrogen Range	0.1–100 mg/L (segmented)
Nitrite Nitrogen Range	0.005–0.25 mg/L
Total Nitrogen Range	0.5–200 mg/L
Total Nitrogen Method	Chromotropic acid spectrophotometry
Wavelength Selection	Automatic
Repeatability & Stability	Repeatability < 0.5%; Stability < 0.5%
Sensitivity (Absorbance)	0.001
Sample Compatibility	φ16 mm (circular) digestion-colorimetric integrated tube
Operating System	Android intelligent operating system
Display Screen	3.5-inch color LCD touch screen
Data Storage	Over 80,000 records
Communication	Type-C, Wi-Fi, Bluetooth
Printer	Optional portable Bluetooth printer
Battery & Runtime	5600 mAh rechargeable lithium battery; 8 hours continuous runtime
Dimensions & Weight	190 × 77 × 72 mm; 325 g

Configuration / Accessories

Standard package includes HM-S4N instrument host, matching reagents, power adapters, colorimetric tubes/cuvettes, and user operation manual.
Optional portable Bluetooth thermal printer or external battery packs according to field testing demands.

Related Models

Part of the comprehensive HM Instruments water quality nitrogen detection series. Users requiring different form factors or parameter configurations may consult companion models in the lineup.

Operation and Support

Select appropriate optical vessels according to concentration range and testing method requirements.
Utilize built-in sample naming and time retrieval functions to organize routine testing records and export data via USB drive.
Follow standard reagent storage instructions and clean optical chambers regularly with lint-free wipes.