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    Portable Chlorine (Cl2) Gas Detector, 0 to 10/50/100 ppm

    5 out of 5 based on 7 reviews | Write a review
    Portable Chlorine (Cl2) gas detector with built-in micro pump has measuring ranges of 0 to 10ppm / 20ppm / 50ppm / 100ppm for your selection, and give alarms with sound, light and vibration. Chlorine gas monitor uses high precision sensor, easy operation, high reliability and low price.
    SKU: ATO-GAS-Cl2
    Free Shipping Worldwide
    Delivery date: 6-12 days


    • LCD dot matrix display, direct readout of gas type, unit, concentration, local time, etc.
    • Support English/Chinese operation, easy to shift.
    • Gas concentration unit PPM and mg/m3 can be shift quickly.
    • Built-in micro-sampling pump, 10 grades of suction are available.
    • Explosion-proof certification

    Gas Detector Functions

    • With self-calibration and zero calibration functions, makes the detection more accurate and reliable.
    • One key to restore factory setting, free from maloperation.
    • With temperature and pressure compensation, able to realize the compensation for the gas concentration under different temperature and pressure environments.
    • Two-stage alarm with sound and light, and alarm point is settable.
    • Rechargeable lithiumpolymer battery with large capacity.
    • High-strength special engineering plastic housing, with anti-slip, waterproof, dustproof and explosion-proof


    Model ATO-SKY2000-Cl2
    Sampling Method Pump type, flow rate can be up to 750ml/min
    Detection Principle Electrochemistry
    Gas Chlorine (Cl2)
    Range (Optional) 0 to 10 ppm, 0 to 20 ppm, 0 to 50 ppm, or 0 to 100 ppm
    Resolution 0.01ppm
    Accuracy ≤±3% F.S.
    Responce 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 Ex ia llC T4
    Case Material ABS+PC
    Case Material ABS+PC
    Protection Grade IP66
    Certification CE, ATEX
    Operating Temperature -20℃~50℃
    Operating Humidity 0~95%RH (non-condensing)
    Operating Pressure 0.8~1.2bar
    Dimension 205*75*32mm
    Weight 300g
    Warranty 12 months
    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

    * If you need a Cl2 gas detector with other measuring ranges unlisted in 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 ATO Gas Detector Catalog to get the specific gas type and measurement range. If you have any questions, please feel free to contact us.


    Portable Cl2 gas detector, pumping type, is used to measures the Chlorine gas concentration in the areas like chemical, pharmaceutical, municipal, water treatment, telecommunications, archaeology, laboratories, cold storage, wine making and other places, so as to ensure the safety of humans and animals.
    Chlorine Cl2 Gas Detector Applications

    Tips: How to Select a Gas Detector?

    1. Gas type and concentration

    • If the majority of gas components are methane and other less toxic alkanes, LEL detector is undoubtedly the most appropriate.
    • If there are toxic gases such as Chlorine (Cl2), it is prior to select a specific gas detector, to ensure the safety of workers.
    • If the gas majorities are the organic, toxic and harmful gases, such as aromatic hydrocarbons, halogenated hydrocarbons, ammonia (amines), ethers, alcohols, lipids, a photoionization detector shall be selected.

    2. Applications

    The selection of gas detector differs from the industrial environments.

    • Fixed gas detector
      Such a gas detector is mostly used in industrial devices and production processes. It can be installed on a specific detection point to detect specific gas leaks.
    • Portable gas detector
      As the portable gas detector is easy to operate and compact, it can be carried to different production sites. In open occasion like open workshops for security alarm, a wearable diffusion-type gas detector is recommended because it can display the concentration of toxic and harmful gases continuously, real-time and accurately on site. If it’s used in a confined space, such as the reaction tank, storage tank or container, sewer or other underground pipe line, underground installations, cargo hold and tunnel, a multi gas detector with a built-in sampling pump is recommended.

    Basic Settings of Portable Gas Detector

    This video will show you the basic settings of ATO portable gas detectors including high/low alarm setting, language setting and time setting.

    Calibration of Portable Gas Detector

    This video will show how to calibrate the ATO portable gas detectors.

    Calibration of Fixed Type Gas Detector

    This video will show the calibration procedures of the ATO fixed type gas detectors.

    Existing reviews of Portable Chlorine (Cl2) Gas Detector, 0 to 10/50/100 ppm
    Cl2 detector works as expected.
    Planned to buy a detector for monitoring the Cl2 leakage in the Chlorine gas tank room. This pumping suction type is recommended. We have used it for detection, very fast and accurate. Works as expected. Good value for the price.
    From: Eckert | Date: 22/04/2019
    Was this review helpful? Yes No (0/0)
    Nice portable chlorine gas detector
    Purchased this chlorine gas detector because we have to monitor the chlorine gas at any time in our water plant. Long-time exposure to chlorine gas can endanger our worker’s health. This portable detector can go with our work, and give us sound and vibration alarm once the chlorine concentration exceeds the alarm point. It is a great guardian for us. Nice product.
    From: Lily | Date: 06/11/2019
    Was this review helpful? Yes No (0/0)
    I have a question about the operation of the portable chlorine detector.
    Can this device detect chlorine gas in the environment of a room?
    From: Matt | Date: 30/12/2019
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, of course. The detection range of this detector is 10-15 meters.
    Chlorine gas detector alarm
    If I enter a room where there is presence of 1 ppm chlorine gas, will the detector give me an alarm without connecting to any auxiliary device?
    From: Matt | Date: 08/01/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, it will sound an alarm once the gas concentration value in the room exceeds the alarm point without need of any auxiliary device.
    Portable Chlorine (Cl2) Gas Detector Data Downloading
    With your Portable Chlorine (Cl2) Gas Detector, is it possible to download data via the USB port every 5 or 10 seconds? Or is the frequency lower? If there were a way to provide a download every 5-10 seconds, that would resolve our issue.
    From: Fernando | Date: 15/06/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, with our portable detector, you can download data via the USB port every 5 or 10 seconds, and the frequency lower time is every 5 seconds.
    Data will be downloaded and transferred as an Excel file, and then you can open the file on the PC to view detected values.
    Target Point Calibration (TPC) for Portable Chlorine (Cl2) Gas Detector
    How often are we supposed to perform the Target Point Calibration (TPC) for Portable Chlorine (Cl2) Gas Detector ?
    From: Jeff | Date: 02/09/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    It is supposed to perform the TPC annually but if the frequency of use is high, we recommend to perform every six months.
    Does your Chlorine (Cl2) Gas Detector have a pump...
    Does your Chlorine (Cl2) Gas Detector have a pump where we can connect a hose and drop into a tank?
    From: Mark | Date: 12/10/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, our Portable Chlorine (Cl2) Gas Detector is equipped with a built-in pump, which can be connected to a hose and directly inserted into the gas tank for testing.
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