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Chlorine Gas Detector
Hydrochloric Acid Gas Detector
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Hydrochloric Acid Gas Detector

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

$2,385.00

Product Summary

The PureAire Hydrochloric Acid Fixed Gas Detector is purpose-built for continuous monitoring of Hydrochloric acid (HCl), a strong, corrosive mineral acid formed by dissolving hydrogen chloride gas in water. It’s a clear, colorless solution with a sharp, pungent odor and is widely used across multiple industries due to its highly reactive and acidic nature.

Hydrochloric Acid is commonly used in metal processing, chemical manufacturing, the food industry, oil and gas, pharmaceuticals, and water treatment. 

Safety Risks of Hydrochloric Acid – corrosivity: It can cause severe burns to the skin, eyes, throat, and respiratory tract. Inhalation Hazards –  Exposure to HCl vapors or mists can lead to coughing, choking, inflammation, or pulmonary edema in high concentrations. Reactive with Water & Bases – Violent reactions can occur, releasing heat and hydrogen chloride gas. Environmental Hazard – Corrosive to metals, damages equipment, and poses risks to aquatic life if released into water systems.

PureAire’s hydrochloric acid 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 hydrochloric acid.

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 the 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 Hydrochloric Acid Gas Detector is a fixed, compact gas monitor that’s built for continuous monitoring of Hydrochloric acid (HCl), protecting workers from toxic and corrosive gas exposure in the workplace.  Designed as a stand-alone monitor, the Hydrochloric Acid Gas Detector can also be connected to any PureAire accessory, including the CloudConnect, horn and strobes, remote digital display, programmable logic controller, or SCADA system. PureAire also manufactures toxic gas detectors with a remote sensor. 

The heart of the Hydrochloric Acid Gas Detector is the smart, renewable hydrochloric acid 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. For additional gases not listed here, please contact 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

Minimize Operational Costs with PureAire’s Hydrochloric Acid Gas Detector

Industry-Leading Low Maintenance Costs

Looking to reduce your gas detection system expenses? PureAire’s Hydrochloric Acid Gas Detector offers the lowest annual operating costs in the industry. Unlike traditional gas monitors that rely on expensive disposable sensors, PureAire’s innovative renewable hydrochloric acid sensors can be easily refreshed in the field with electrolyte, at just 20% of the cost of replacing sensor cells. Routine upkeep averages only $70 per year, delivering hundreds in annual savings compared to disposable sensor models.

Hassle-Free Stand-Alone Operation

No Complex Setup Required

Installation is quick and simple. The PureAire Hydrochloric Acid Gas Detector functions as a fully stand-alone system—just mount it near your risk zone, plug it into any standard 115VAC 60Hz or 220VAC 50Hz outlet, and you’re ready to monitor. Built-in safety features like a loud alarm horn and bright LED indicators instantly alert personnel to dangerous gas levels. Plus, with dedicated alarm and fault relays, you can easily connect to external warning systems, while the 4-20mA analog output ensures seamless integration with SCADA and PLC systems.

Intelligent, Continuous Monitoring

Smart Sensor Technology You Can Trust

Engineered for reliability, PureAire’s Hydrochloric Acid Gas Detector is equipped with intelligent self-monitoring electronics that operate around the clock. In the event of a malfunction, the system’s analog output and fault relay provide immediate notification to your control room. The sensor includes an integrated microcontroller that stores calibration data and simplifies maintenance—you can detach it for service, then plug it back in with all calibration information automatically synced.

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 Hydrochloric Acid 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.