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Chlorine Gas Detector
Chlorine Gas Detector
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Chlorine Gas Detector

Available Product Options. Please choose from the menu below | In stock

$2,540.00

Product Summary

PureAire’s Chlorine Fixed Gas Detector is an ideal safety solution for industrial facilities requiring continuous monitoring of chlorine gas (Cl₂). This fixed gas detector pairs with a dedicated, renewable toxic gas sensor programmed specifically for chlorine in parts-per-million (ppm) concentrations, ensuring accurate and reliable detection.

It is particularly well-suited for environments such as water treatment plants, chemical manufacturing facilities, pulp and paper mills, and industrial disinfecting operations, where chlorine is commonly used for its reactive and sanitizing properties. Because chlorine is both toxic and corrosive, proper detection is essential to protect workers and maintain compliance with safety standards.

PureAire’s chlorine sensors are designed for long-term use, lasting up to 8 years in normal conditions. They are also rechargeable on-site with electrolyte, making maintenance simple and cost-effective while minimizing system downtime.

The PureAire gas detector offers a durable, dependable, and low-maintenance monitoring solution for any industrial applications involving chlorine.

Please note that because of the nature of this product, the lead time is typically 2-3 days but may be up to one week. We will make every effort to ship your order as soon as possible.
  • Transmitter connects to any PureAire toxic or corrosive gas sensor
  • Plug & play sensor sets the transmitter gas & measurement range
  • Dual-level user-adjustable alarm relays
  • 4-20mA analog output (Active)
  • Built-in horn & visual alarm LEDs
  • Electronics continuously check sensor & system status
  • Low-cost, long-life renewable sensor
  • Quick, easy sensor calibration
  • Optional remote cable for monitoring up to 30 feet from the transmitter
  • Connects to PLC or SCADA controller
  • UL, CUL, and CE Approvals
  • 24V DC Power supply included
  • Available without a built-in horn – 99065. Please contact PureAire for ordering information: 847-726-6000

The PureAire Chlorine Fixed Gas Detector is a compact gas monitor designed to protect workers from exposure to toxic and corrosive gases in the workplace. It consists of a generic transmitter/controller connected to a dedicated, renewable chlorine gas sensor that automatically inputs the gas and measurement range. Designed as a stand-alone monitor, the Chlorine Fixed Gas Detector can also be connected to any programmable logic controller or SCADA system. PureAire also manufactures toxic gas detectors with a remote sensor. 

The heart of the system is a smart, renewable chlorine sensor cell programmed with specific gas and measurement range information. When servicing the sensors, they can be recharged with fresh electrolyte and dynamically gas-calibrated in the maintenance shop away from the transmitter.

 

Sampling Method Diffusion. (Optional: sensor can be remote up to 30 feet from the transmitter)
Available Gases ammonia, bromine, chlorine, fluorine, hydrogen bromide, hydrogen chloride, hydrogen cyanide, hydrogen fluoride, hydrides, hydrazine, nitrogen dioxide, phosphine, and sulfur dioxide. Other gases are available; consult PureAire.
Accuracy ± 10% of full scale
Operating Temperature -25 to +122F (-32 to +50C)
Sensor Type Renewable electrochemical self-checking sensor with built-in microprocessor
Sensor Life 3 to 8 years under normal conditions
Gas concentration indicator Built-in LCD digital display, (backlit) Displays: Gas Name & ppm concentration, AL1, AL 2, System Fault messages.
Signal Outputs 4-20 mA analog output (Active), Dual Level Alarm Relay Contacts
Power Requirements

24 VDC

80 mA
Dimensions 5.12(W) x 8.25 (H) x 3.20 (D) inches; (120 x 209 x 81 mm)
Weight 1.2 lbs. (.5 kg)
Enclosure Polycarbonate UL-listed general-purpose
Country of Origin USA
Harmonized Tariff Code 8531.10.0045

Cut Maintenance Costs Without Compromising Safety

The PureAire Chlorine Fixed Gas Detector is engineered for performance and affordability, offering the lowest annual maintenance cost of any chlorine gas monitoring system on the market. Unlike systems that rely on costly disposable sensor cells, PureAire’s renewable chlorine gas sensors are easily recharged with electrolyte directly in the field. This simple process costs just 20% of what you’d pay for a traditional disposable sensor, keeping ongoing expenses incredibly low. With routine maintenance averaging $70 per year, you can save hundreds of dollars annually, making it the smart choice for long-term gas detection.

True Stand-Alone Operation for Hassle-Free Monitoring

PureAire’s Chlorine Gas Detector is a fully self-contained monitoring system. Installation is quick and straightforward: just mount the detector near the chlorine risk zone and plug it into any standard 115VAC or 220VAC outlet. There’s no need for additional control systems or complicated wiring. The detector features a built-in alarm horn and bright LED indicators to provide immediate alerts in the event of a hazardous chlorine leak. For broader safety integration, it includes individual alarm and fault relays for external devices, and a 4–20mA analog output for seamless connection to SCADA and PLC systems.

Advanced Smart Electronics, Monitored 24/7

PureAire’s Chlorine Gas Detector uses intelligent, self-supervising electronics that monitor system performance around the clock. If a malfunction or system error occurs, the detector automatically signals your control room through its analog output and fault relay, ensuring fast awareness and response. A dedicated microcontroller inside the sensor stores calibration data independently, making routine service and calibration easy. You can remove the sensor from the transmitter, perform maintenance, and plug it back in—the calibration data transfers instantly, so your system is always up and running with minimal downtime.

Trusted Protection, Proven Savings

From chemical storage areas and water treatment plants to industrial processing facilities, the PureAire Chlorine Fixed Gas Detector delivers reliable performance, simplified maintenance, and exceptional long-term savings. It’s a high-performance safety solution built for demanding environments, without the high operating costs.

Contact us today to learn more or request a custom quote for your chlorine gas monitoring needs.

Universal Gas Detector Literature

Universal Gas Detector Manual

Explosion-Proof EPU Gas Monitor Literature

Comparison PMS vs Disposable 1 pt

Gases We Detect

Calibration Cap for Gas Sensors

Calcap

Bulk Head Mount

BULKHEADSAMPLEMOUNT_02_01

Horn & Strobe

CloudConnect

8-Channel Programmable Controller for Oxygen, Carbon Dioxide, or Toxic/Combustible Gas Monitors

8-Channel Controller

Targeted Detection

Configured specifically for Chlorine monitoring to support site safety programs.

Continuous Monitoring

Designed for around-the-clock detection to help identify leaks or unsafe conditions early.

Integration Ready

Built to fit typical facility alarm and monitoring workflows (local alerts and system integration).

Application Flexibility

Suitable for facilities including labs, manufacturing, and gas handling areas.

A toxic gas detector continuously monitors the air for harmful gases, including carbon monoxide, chlorine, ammonia, and hydrogen sulfide. It warns personnel before levels reach dangerous concentrations. Toxic gas detectors protect workers from low-level poisonous gases (in the ppm range) that can cause immediate or long-term health effects.

The most common include:
• Carbon monoxide (CO) – parking garages, boiler rooms
• Hydrogen sulfide (H₂S) – oil & gas, wastewater treatment
• Chlorine (Cl₂) – water treatment, chemical plants
• Ammonia (NH₃) – refrigeration, food processing
• Nitrogen dioxide (NO₂) – vehicle maintenance facilities
• Sulfur dioxide (SO₂) – power plants, refineries
• Ozone (O₃) – semiconductor, pharmaceutical industries
• Refrigerant gases (classified as A1, A2L, B2L, A3) – HVAC systems, supermarkets, cold storage, data centers

• Electrochemical sensors: Accurate, low-level detection; best for most toxic gases (CO, H₂S, Cl₂, NH₃).
• PID (Photoionization Detectors): Detects volatile organic compounds (VOCs) and low-level hydrocarbons.
• NDIR (Non-Dispersive Infrared): Used more often for CO₂ or gases that absorb infrared light. NDIR sensor cells are highly effective for detecting refrigerant gases across classifications A1, A2L, B2L, and A3.

• CO: 0–100 ppm, 0–1,000 ppm
• H₂S: 0–30 ppm, 0–200 ppm
• Cl₂: 0–1 ppm, 0–3 ppm, 0–10 ppm, 0–50 ppm, 0–200 ppm
• NH₃: 0–75 ppm, 0–100 ppm, 0–200 ppm, 0–300 ppm, 0–1,000 ppm
• NO₂: 0–2 ppm, 0–9 ppm, 0–15 ppm, 0–20 ppm
• SO₂: 0–15 ppm, 0–20 ppm
• O₃: 0–0.3 ppm, 0–1 ppm, 0–3 ppm, 0–300 ppm
• Refrigerant gases (A1, A2L, B2L, A3 classifications): 0–500 ppm, 0–1,000 ppm, 0–5,000 ppm

• Oil & gas: H₂S monitoring in drilling and refining
• Water/wastewater treatment: Chlorine and H₂S detection
• Food & beverage: Ammonia refrigeration monitoring
• Laboratories & pharma: VOC and toxic gas detection
• Manufacturing & automotive: CO and NO₂ monitoring
• Power generation: SO₂ monitoring in flue gas areas
• HVAC, supermarkets, cold storage & data centers: Refrigerant leak monitoring (A1, A2L, B2L, A3 gas classifications)

Consider:
• The specific gas hazards in your facility
• Sensor type (electrochemical, PID, NDIR, etc.) based on gas and concentration range
• Installation environment (indoor, outdoor, temperature/humidity conditions)
• Compliance needs (OSHA, IFC, local codes)
• Integration with alarms, PLCs, or cloud monitoring systems like PureAire’s CloudConnect

• Electrochemical sensors: Every 6–12 months
• PID sensors: Every 3–6 months
Always follow the manufacturer’s recommendation and perform bump tests for safety.

• LEL: Percentage of gas concentration at which ignition becomes possible. Combustible detectors typically measure 0–100% LEL.
• PPM (parts per million): A finer measurement, usually used for toxic gases rather than combustibles.

Yes, in most cases. Some gases, such as hydrogen sulfide (H₂S), carbon monoxide (CO), and ammonia (NH₃), pose toxic risks at very low concentrations (ppm levels) and combustible risks at higher concentrations (% LEL).
• A toxic gas detector is needed to protect worker health by alarming at ppm exposure limits set by OSHA and other agencies.
• A combustible gas detector is needed to prevent explosions or fires when gas levels approach the Lower Explosive Limit (LEL).

Since the alarm thresholds and sensor technologies differ, a single detector usually cannot provide both types of protection. Many facilities use both toxic and combustible gas detectors for full coverage, often integrated into a single safety system.  This system can activate building ventilation and advanced warning systems when gas levels reach dangerous concentrations.

If a gas is toxic at low ppm and combustible at higher % LEL, you may need dual detection — one detector set for ppm exposure, another for explosion hazard. Sensor selection depends on whether the primary risk is worker health, explosion, or both.