Portable Chlorine (Cl2) Gas Detector

$845.22

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GasDog GD200-Cl2 portable Chlorine gas detector is a professional-grade safety instrument engineered to deliver rapid, laboratory precision monitoring of toxic Chlorine (Cl2) gas in hazardous industrial environments. Equipped with an integrated micro sampling pump and a premium electrochemical sensor, this compact Chlorine Cl2 gas monitor protects personnel, mitigates regulatory risks, and ensures immediate response to critical leaks.

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Delivery date: 3-10 days

SKU: GD200-Cl2

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DESCRIPTION
SPECIFICATIONS
DOCUMENTS

Gas Detector for Cl₂ Monitoring

This handheld Chlorine (Cl₂) gas monitor is equipped with a gas sensor and sound, light & vibration alarms to detect Chlorine quickly and accurately.

Basic Parameters:

Model: GD200-Cl2
Sampling Method: Pump Type
Gas: Chlorine (Cl₂)
Range: 0~5ppm to 200ppm
Resolution: 0.001ppm (0-5ppm), 0.01ppm (0-100ppm)
Accuracy: ≤±3% F.S.
Explosion-proof Grade: Ⅱ 2G Ex ia Ⅱ CT4 Ga
Certification: CE, ATEX
Warranty: 12 months

Chlorine Detector

Features

Aluminium Alloy Case

Equipped with a Waterproof Aluminum Alloy Suitcase

Zero Calibration

Self-Calibration and Zero Calibration for Accurate Detection

USB Data Transfer

USB Interface to Transfer Data and Charge at High Speed

Rechargeable Battery

3.7V Rechargeable Lithium Polymer Battery with a Large Capacity

Why Choose

GasDog Gas Detector?

Portable Single Gas Detector

- Chlorine Gas Leak Detector

✔️ 10-Grade Sampling Pump: Built-in internal pump with 10 adjustable suction levels for confined space sampling.
✔️ Two-Stage Custom Alarms: Settable Low/High alarm points with instant sound and light alerts.
✔️ High-Accuracy Cl2 Sensor: Fast-response electrochemical sensor for stable chlorine monitoring.
✔️ Multi-Data LCD Screen: Direct real-time readout of gas concentration, measurement unit, battery, and local time.
✔️ One-Press Unit Shift: One-button instant toggle between ppm and mg/m³.
✔️ Industrial ABS Housing: Made of high-intensity ABS engineering plastics for rugged industrial environments.
✔️ Pocket-Sized Portability: Compact, handheld design for easy carrying and hands-free personal protection.

More Info.

Applications

GasDog Cl2 monitor is cross-optimized for diverse industrial frameworks where Chlorine is utilized for disinfection, bleaching, or chemical synthesis:

Wastewater & Water Treatment Plants: Monitoring chemical dosing rooms and chlorine storage tanks during water purification processes.
Pulp & Paper Manufacturing: Ensuring worker safety during industrial bleaching and wood pulp treatment.
Chemical Processing & Synthesis: Tracking ambient air safety in plastics, pharmaceuticals, and synthetic organic chemical manufacturing lines.
Confined Space Entry: Pre-entry clearing of storage silos, deep pipelines, and underground utility vaults where heavy toxic gases accumulate.

Portable gas detector for agricultural & environmental protection

Agricultural Protection

Livestock Farms

Petrochemical & Chemical Industry

Sewage Treatment Plant

Gas Detector

Compliance & Calibration

Certification and Compliance Standards

Intrinsically Safe Explosion-Proof Certification: Gas Dog portable Chlorine gas detector holds a high-level intrinsically safe explosion-proof certificate (II 2G Ex ia II CT4 Ga), permitting its safe use and wear in environments containing hazardous explosive gases.
Compliance Standards: It supports OSHA monitoring requirements regarding STELs—allowing for the configuration of corresponding alarm thresholds—thereby facilitating occupational health and safety compliance in the workplace. This detector has obtained both European CE certification and ATEX intrinsically safe explosion-proof certification, making it suitable for use in explosive environments.

How to calibrate the GasDog Cl2 gas detector?

This Cl2 gas detector has a 1 year (365 days) warranty. Usually, the gas detector needs to be calibrated once a year or every 6 months. It can be calibrated at any local calibration institution, or you can send it to us for calibration. The calibration fee is $ 75 for one time. So it is recommended to purchase a copper kit and a stainless calibration kit.

Gas Detection FAQs - For Your Safety Environments

Built-in advanced gas detector sensor and sound & light alarm to ensure precise and safe gas detection in hazardous applications.

Q1: Is chlorine a toxic gas?

A2: Chlorine (Cl2) is indeed a toxic gas. It is a greenish-yellow gas with a strong, pungent odor, and it can be harmful to humans and the environment when released in sufficient quantities. Inhaling Chlorine gas can irritate the respiratory system, causing coughing, difficulty breathing, and chest discomfort. Exposure to high concentrations of Chlorine gas can be life-threatening, leading to severe lung damage or even death.

To ensure safety in environments where Chlorine gas may be present, various types of gas detectors are used, including portable Cl2 gas detectors and fixed Cl2 gas detectors. These devices are designed to monitor the concentration of chlorine gas in the air and provide early warnings in case of a leak or elevated levels. They play a crucial role in industrial settings, water treatment facilities, and other areas where chlorine is used or produced, helping to protect the health and safety of workers and the surrounding environment.

Q2: Why choose the pump-suction Chlorine gas detector for confined spaces?

A2: Chlorine Cl2 gas is 2.5 times heavier than air and easily pools at the bottom of confined spaces, but the GasDog GD200-Cl2 Chlorine gas detector features a powerful built-in sampling pump with a flow rate up to 750 ml/min and 10 adjustable suction grades. This allows workers to connect the optional 480mm extension probe to safely draw samples from a distance before entry, delivering an ultra-fast response time of ≤10 seconds to immediately read exact concentration levels on its LCD dot-matrix display.

Q3: How does GasDog ensure the gas detector survives harsh, corrosive industrial environments?

A2: To withstand highly aggressive chlorine vapors in wastewater plants or chemical facilities, GasDog constructs the detector housing from premium high-intensity ABS+PC engineering plastics, preventing material embrittlement or corrosion. The entire device features a robust sealing design with an IP66 protection grade and an explosion-proof rating of Ⅱ 2G Ex ia Ⅱ CT4 Ga (CE/ATEX certified), guaranteeing secure and stable operation in volatile or high-humidity environments (0~95%RH).

Model	GD200-Cl2
Sampling Method	Pump type, flow rate can be up to 750ml/min
Detection Principle	Electrochemistry
Gas	Chlorine (Cl2)
Range (Optional)*	0 to 5ppm, 0 to 10ppm, 0 to 20ppm, 0 to 50ppm, 0 to 100ppm or 0 to 200ppm
Resolution	0.001ppm (0-5ppm), 0.01ppm (0-10/20/50ppm) or 0.1ppm (0-100/200ppm)
Accuracy	≤±3% F.S.
Response Time	≤10s
Repeatability	≤±1%
Recovery Time	≤10s
Linearity Error	≤±1%
Zero Shift	≤±1% (F.S./year)
Data Logging (Optional Function)	High speed data transmission by USB, available for data downloading and printing (The built-in IC card has about 2G memory, which can record 100,000 sets of data.)
Alarms	Sound, light and vibration
Display	LCD dot matrix display
Language	Chinese/English
Battery	3.7V rechargeable lithium battery, 3.7 Watt (Charger included: Input AC 100-240V 50/60Hz with optional USA, Europe or UK plug)
Operating Time	100h (Pump off)
Communication	Mini USB interface supports standard MODBUS communication protocol
Explosion-proof Grade	Ⅱ 2G Ex ia Ⅱ CT4 Ga
Case Material	ABS+PC
Protection Grade	IP66
Certification	CE, ATEX (Standard: EN IEC 60079-0:2018, EN 60079-1:2014)
Operating Temperature	-20℃~50℃
Operating Humidity	0~95%RH (non-condensing)
Operating Pressure	0.8~1.2bar
Dimension	2057532mm
Weight	300g
Warranty	12 months
Extension Probe	About 480mm (Total Length), About 300mm (Probe Head)
Accessories (Optional)	Calibration kit - gas pressure regulator (calibration gas cylinder NOT included) • Body Material: Stainless steel • Input Range of Pressure Gauge: 0-25MPa • Output Range of Pressure Gauge: 0-0.6Mpa • Gauge Class: 2.5 • Input Pressure: ≤15MPa • Output Pressure: ≤0.45MPa • Rated Flow: 0.6 m³/h • Connection: Inlet: W21.8-14 teeth/inch (levorotation, dextrorotation) ; Outlet: Ф6 flexible tube

Note:

If you need a Cl2 gas detector with other measuring ranges unlisted in the above table, please contact us to inform your operating environment, so as to help you choose an appropriate one for your application.
We also provide other common gas detectors, and you can refer to GasDog Gas Detector Catalog to get the specific gas type and measurement range. If you have any questions, please feel free to contact us.

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The portable chlorine detector arrived quickly, and the packaging was good. The machine is small and lightweight, making it suitable for on-site inspections. It responds quickly after powering on, provides stable data, and has a loud enough alarm sound to be heard even while wearing protective gear.

From: Funafu | Date: 10/31/2025 2:30 AM

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Portable Chlorine (Cl2) Gas Detector

Gas Detector for Cl2 Monitoring

Portable Single Gas Detector

Certification and Compliance Standards

How to calibrate the GasDog Cl2 gas detector?

Gas Detection FAQs - For Your Safety Environments

Q1: Is chlorine a toxic gas?

Q2: Why choose the pump-suction Chlorine gas detector for confined spaces?

Q3: How does GasDog ensure the gas detector survives harsh, corrosive industrial environments?

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