Model: HNAG900
Sampling Method: Pumping Suction
Detection Principle:Electrochemistry
Gas: Formaldehyde (CH2O)
Range: 0-50PPM,0-100PPM.
Resolution: 0.01PPM,0.1PPM.
Accuracy: ≤±2% F.S.
✔️It adopts a 32-bit microprocessor and is equipped with high-speed and high-precision processing circuits to achieve rapid and accurate measurement
✔️Reserve a USB interface externally. Use a USB cable to communicate with a computer to achieve data export and deletion
✔️It can be paired with up to 6 types of sensors, providing more flexible detection
✔️It comes with built-in buttons, allowing for easy parameter viewing, setting and other operations
✔️By modifying the coefficients, switching between different units can be achieved, such as ppm and mg/m ³
✔️The storage interval for historical data can be freely set
✔️It has the function of switching between Chinese and English for display
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
Gas Detection Q&A
Q1:Why are portable formaldehyde gas detectors used in industrialized products?
A1:
1. Ensure production safety and occupational health
Raw material monitoring: Many industrial products (such as adhesives, paints, resins) use raw materials containing formaldehyde during the production process. Portable detectors can monitor the concentration of formaldehyde in the workshop air in real time, ensuring it remains within the safety limit and preventing workers from inhaling excessive formaldehyde and suffering poisoning.
Closed space operations: In poorly ventilated closed spaces such as reaction vessels, storage tanks, and warehouses, formaldehyde is prone to accumulate. Portable instruments are convenient to carry into these areas for testing, preventing explosions or acute poisoning accidents.
2. Control product quality
Process optimization: In industries such as chemical synthesis or wood processing, the release of formaldehyde is a key indicator for measuring the reaction degree or curing effect. Through testing, process parameters can be optimized to ensure product performance meets standards.
Finished product inspection: For furniture, textiles, plastic products, etc., the residual formaldehyde content is an important quality indicator. Although finished product testing usually uses more sophisticated laboratory equipment, portable instruments can be used for rapid preliminary screening on the production line to promptly identify Non-compliant batches.
3. Advantages of portable instruments
Compared with fixed online monitoring systems, portable formaldehyde detectors have the characteristics of flexibility, simplicity of operation, and lower cost, making them highly suitable for daily inspections, hazard investigations, and on-site handling of emergencies.
4. Advantages of skyeaglee portable gas detector
In comparison with fixed online monitoring systems, portable formaldehyde detectors have the characteristics of flexibility, simplicity of operation, and lower cost, making them highly suitable for daily inspections, hazard investigations, and on-site handling of emergencies.

HNAG920-C2H2 portable C2H2 acetylene single gas detector with multiple customizable ppm & LEL measuring ranges. Supports pump/diffusion dual sampling, auto rotating screen, 120,000 data logs, Type-C data export, 4G/WiFi/Bluetooth/LORA wireless transmission, CE RoHS SIL2 Ex certification for welding, chemical acetylene leak safety monitoring.

Explore our fixed carbon monoxide detector with RS485 and 4 - 20mA interfaces. Ideal for continuous CO monitoring in industrial and commercial settings. It offers high - precision detection, reliable performance, and seamless integration with existing systems. Ensure safety and compliance with this advanced detector.

HNAG920-HF portable hydrogen fluoride HF single gas detector with 0-10/50/100ppm customizable ranges. Equipped with pump+diffusion dual sampling, auto 180° rotating screen, 120,000 data logs, Type-C data export, multi wireless transmission, CE/RoHS/SIL2/Ex explosion-proof certification for chemical plant HF leakage safety monitoring.

This portable F2 fluorine single gas detector (Model HNAG920-F2) supports 0-5 (10) ppm, 0-1000ppm, 0-10000ppm ranges. It features pump/diffusion dual sampling, auto 180° screen rotation, 120,000 historical data logs, Type-C 2-in-1 charging & data export, multi-alarm modes, and 4G/WiFi/Bluetooth/LORA connectivity for industrial hazardous scenarios.

This HNAG920-CH3Br portable methyl bromide single gas detector supports 6 optional measuring ranges from 0-50ppm to 0-10000ppm. It adopts high-precision detection principle, features dual pump/diffusion sampling, 180° auto-rotating color screen, multi-connectivity (4G/WiFi/Bluetooth/LORA), 120,000 historical data logs, visual audio-light alarm, IP rugged housing, suitable for fumigation, chemical plant, warehouse industrial gas monitoring scenarios.

Compact HNAG920-CH3Br portable methyl bromide gas monitor offering 0-10/100/240ppm selectable ranges, dual pump/diffusion sampling, rotatable 2-inch LCD, multi-mode alarms, massive data logs, versatile wireless connectivity and Type-C export for reliable CH3Br workplace safety inspections.

This portable SiH4 silane single gas detector (Model HNAG920-SIH4) supports 0-1/10/50ppm ranges, with pump-diffusion dual sampling, 180° auto-rotating screen, 120,000 historical records storage, Type-C 2-in-1 charging&data export, 4G/WiFi/Bluetooth/LORA, explosion-proof design for industrial silane leakage monitoring.

This HNAG920-NH3 handheld single ammonia gas detector provides 12 optional NH3 measuring ranges from 0-10ppm up to 0-100%Vol. It supports auto 180° screen rotation, 4G/WiFi/Bluetooth/LORA wireless transmission, Type-C rechargeable design, 4-side LED alarm lights, durable PC+TPU housing, and allows mobile data viewing & Bluetooth printing for chemical plants, livestock farms and refrigeration workshop hazardous gas monitoring.

Skyeaglee HANG-900-CH4-C portable methane gas detector with catalytic detection 0-100%LEL, IP65, Ex ib II CT4 Gb. Expandable to 6 gases, 5400mAh, USB data export. Professional methane gas monitor for oil, coal, petrochemical.

Explore the Portable pump - assisted diffusion - type hydrogen gas detector. This detector combines pump - assisted and diffusion - type features, offering high - precision hydrogen detection.

The HNAG1000-PM is an industrial fixed dust detector featuring a high-precision laser scattering sensor. With IP66 protection, explosion-proof casing, and RS485/4-20mA outputs, it ensures real-time, accurate PM monitoring for harsh environments.

Engineered for hazardous industrial sites, the HNAG1000-PM-M provides continuous online particulate matter monitoring. With an IP66 rugged enclosure, ExdIICT6 certification, and seamless PLC integration via RS485/4-20mA, it guarantees absolute safety.

Category: Products Flue gas pretreatment system Simple Pretreatment Online Monitoring System Key words: Products Model: SK/MIC-7500 Measurement object: CO2/Ex/CH4/CO/H2S/O2/N2/NH3/CL2/H2/He/Ar/CH2O/O3/NO/NO2/SO2/C2H4O/PH3/COCL2/HBR/HCL/HCN/CLO2/SIH4/...

This professional portable H2O2 hydrogen peroxide single gas detector supports pump suction & dual diffusion sampling, with 180° auto-rotating color screen, 4G/WiFi/Bluetooth/LORA multi connectivity. It stores up to 120,000 historical records, features multi-level alarm, wide optional H2O2 ranges, USB Type-C charging & data export, ideal for industrial H2O2 leakage monitoring.

HNAG920-C2H6O is a professional portable single ethanol C2H6O gas detector with dual pump suction & diffusion sampling modes. It features auto 180° rotating color screen, one-touch emergency alarm, Type-C 2-in-1 charge & data export, max 120,000 data logs, optional 4G/WiFi/Bluetooth/LoRa. Multiple ethanol measuring ranges available, explosion-proof Ex certification for factory, laboratory & alcohol workshop safety monitoring.

Discover the Combustible Online Gas Detector LEL Alarm Monitor System. This advanced system is designed for real - time detection of combustible gases. It offers high - precision monitoring, rapid alarm response to ensure safety in environments with potential gas hazards. Ideal for industrial settings, it helps prevent gas - related accidents and provides reliable data for better management.

This HNAG920-C2H4 portable ethylene (C2H4) single gas detector adopts pump suction & diffusion dual sampling design, with 180° auto-rotating color screen. It supports 4G/WiFi/Bluetooth/LORA multi wireless modes, mobile viewing & Bluetooth printing, stores 120,000 historical records. It has multi-level audible-visual alarm, IP rugged housing, multiple optional measuring ranges for industrial ethylene leakage detection.

Portable HNAG920-SF6 single gas detector for sulfur hexafluoride leakage detection, measuring range optional 0-1000/2000/3000/5000ppm. Adopts high precision sensor, with auto screen rotation, multi-alarm system, 120,000 historical data logs, support WiFi/Bluetooth/LoRa/4G wireless transmission, CE, Ex, SIL3 certified for power substation electrical equipment SF6 leak inspection.

This HNAG920-CS2 portable carbon disulfide gas detector supports multiple CS2 measuring ranges from 0-20ppm to 0-10000ppm. It adopts advanced sensing principle, features auto screen rotation, dual pump/diffusion sampling, 120,000 historical data logs, multi wireless transmission, Type-C 2-in-1 charging & data transfer, visual & audible multi-alarm, rugged PC+TPU housing for industrial hazardous scenarios.

Discover our Intrinsically Safe Carbon Monoxide Detector with Explosion Proof. Ideal for hazardous environments, it offers reliable CO detection. Built - in safety features prevent explosions, ensuring maximum protection. High - quality sensors provide accurate readings. Suitable for industrial sites, mines, and more. Keep your workplace safe with this top - notch detector.

HNAG920-C2H2 portable C2H2 acetylene single gas detector with multiple customizable ppm & LEL measuring ranges. Supports pump/diffusion dual sampling, auto rotating screen, 120,000 data logs, Type-C data export, 4G/WiFi/Bluetooth/LORA wireless transmission, CE RoHS SIL2 Ex certification for welding, chemical acetylene leak safety monitoring.

Explore our fixed carbon monoxide detector with RS485 and 4 - 20mA interfaces. Ideal for continuous CO monitoring in industrial and commercial settings. It offers high - precision detection, reliable performance, and seamless integration with existing systems. Ensure safety and compliance with this advanced detector.

HNAG920-HF portable hydrogen fluoride HF single gas detector with 0-10/50/100ppm customizable ranges. Equipped with pump+diffusion dual sampling, auto 180° rotating screen, 120,000 data logs, Type-C data export, multi wireless transmission, CE/RoHS/SIL2/Ex explosion-proof certification for chemical plant HF leakage safety monitoring.

This portable F2 fluorine single gas detector (Model HNAG920-F2) supports 0-5 (10) ppm, 0-1000ppm, 0-10000ppm ranges. It features pump/diffusion dual sampling, auto 180° screen rotation, 120,000 historical data logs, Type-C 2-in-1 charging & data export, multi-alarm modes, and 4G/WiFi/Bluetooth/LORA connectivity for industrial hazardous scenarios.

This HNAG920-CH3Br portable methyl bromide single gas detector supports 6 optional measuring ranges from 0-50ppm to 0-10000ppm. It adopts high-precision detection principle, features dual pump/diffusion sampling, 180° auto-rotating color screen, multi-connectivity (4G/WiFi/Bluetooth/LORA), 120,000 historical data logs, visual audio-light alarm, IP rugged housing, suitable for fumigation, chemical plant, warehouse industrial gas monitoring scenarios.

Compact HNAG920-CH3Br portable methyl bromide gas monitor offering 0-10/100/240ppm selectable ranges, dual pump/diffusion sampling, rotatable 2-inch LCD, multi-mode alarms, massive data logs, versatile wireless connectivity and Type-C export for reliable CH3Br workplace safety inspections.

This portable SiH4 silane single gas detector (Model HNAG920-SIH4) supports 0-1/10/50ppm ranges, with pump-diffusion dual sampling, 180° auto-rotating screen, 120,000 historical records storage, Type-C 2-in-1 charging&data export, 4G/WiFi/Bluetooth/LORA, explosion-proof design for industrial silane leakage monitoring.

This HNAG920-NH3 handheld single ammonia gas detector provides 12 optional NH3 measuring ranges from 0-10ppm up to 0-100%Vol. It supports auto 180° screen rotation, 4G/WiFi/Bluetooth/LORA wireless transmission, Type-C rechargeable design, 4-side LED alarm lights, durable PC+TPU housing, and allows mobile data viewing & Bluetooth printing for chemical plants, livestock farms and refrigeration workshop hazardous gas monitoring.

Skyeaglee HANG-900-CH4-C portable methane gas detector with catalytic detection 0-100%LEL, IP65, Ex ib II CT4 Gb. Expandable to 6 gases, 5400mAh, USB data export. Professional methane gas monitor for oil, coal, petrochemical.

Explore the Portable pump - assisted diffusion - type hydrogen gas detector. This detector combines pump - assisted and diffusion - type features, offering high - precision hydrogen detection.

The HNAG1000-PM is an industrial fixed dust detector featuring a high-precision laser scattering sensor. With IP66 protection, explosion-proof casing, and RS485/4-20mA outputs, it ensures real-time, accurate PM monitoring for harsh environments.

Engineered for hazardous industrial sites, the HNAG1000-PM-M provides continuous online particulate matter monitoring. With an IP66 rugged enclosure, ExdIICT6 certification, and seamless PLC integration via RS485/4-20mA, it guarantees absolute safety.

Category: Products Flue gas pretreatment system Simple Pretreatment Online Monitoring System Key words: Products Model: SK/MIC-7500 Measurement object: CO2/Ex/CH4/CO/H2S/O2/N2/NH3/CL2/H2/He/Ar/CH2O/O3/NO/NO2/SO2/C2H4O/PH3/COCL2/HBR/HCL/HCN/CLO2/SIH4/...

This professional portable H2O2 hydrogen peroxide single gas detector supports pump suction & dual diffusion sampling, with 180° auto-rotating color screen, 4G/WiFi/Bluetooth/LORA multi connectivity. It stores up to 120,000 historical records, features multi-level alarm, wide optional H2O2 ranges, USB Type-C charging & data export, ideal for industrial H2O2 leakage monitoring.