IP65 Explosion-Proof Fixed H₂O₂ Detector With Infrared Remote Control and 4-20mA/RS485/Relay Output

A cost-effective, explosion-proof fixed gas transmitter for hydrogen peroxide (H₂O₂) monitoring. Measures 0–100ppm with 0.1ppm resolution using an electrochemical sensor. Features 3 wire 4 20mA, RS485 Modbus, and relay output (controls external alarms/fans). Optional sound/light alarm (>90dB) and wireless transmission (LoRa/4G). Configured via infrared remote controller. IP65, Ex d IIC T6 Gb. Ideal for sterilization areas, food processing, and semiconductor fabs.

The YT-95H series is a cost effective fixed gas transmitter for continuous monitoring of toxic gases, flammable gases, and oxygen. Designed for hazardous environments, it integrates 3 wire 4 20mA, RS485 Modbus, and relay output to be compatible with most control systems (PLC, DCS, SCADA). The relay can directly control external devices such as horns, strobe lights, fans, or shut off valves.

Taking hydrogen peroxide (H₂O₂) as an example – a strong oxidizer used for sterilization, bleaching, and wastewater treatment – the YT-95H uses an electrochemical sensor to measure concentrations from 0–100ppm with a resolution of 0.1ppm. Accuracy is ≤ ±2% FS, response time (T90) ≤20s, repeatability ≤ ±1%, and zero shift ≤ ±1% per year.

Optional features include:

• Sound/light alarm (>90dB, user adjustable)
• Wireless data transmission (LoRa or 4G) for remote viewing on PC or mobile phone

Configuration is easy with the infrared remote controller (included) – no need to open the enclosure for alarm setpoint adjustment, zero calibration, or address modification.

The housing is die cast aluminum with an IP65 rating (waterproof, dustproof, explosion proof). Explosion proof grade Ex d IIC T6 Gb makes it suitable for Zone 1 and Zone 2 hazardous areas. The sensor housing can be aluminum alloy or 316 stainless steel for corrosive environments.

Hydrogen peroxide is a colorless, strong oxidizer widely used for disinfection, sterilization (e.g., pharmaceutical cleanrooms, medical equipment), bleaching (paper, textiles), and wastewater treatment. While it decomposes into water and oxygen, high concentrations can be hazardous: exposure causes respiratory irritation, skin burns, and eye damage. Vaporized H₂O₂ (VHP) is common in sterilization processes, making leak detection critical for worker safety. The YT 95H helps monitor H₂O₂ levels in enclosed areas, sterilization chambers, and storage rooms.

• Continuous online monitoring – 24/7 real time display of H₂O₂ concentration.
• High accuracy & fast response – ≤ ±2% FS, T90 ≤20s.
• Multiple outputs – 3 wire 4 20mA, RS485 Modbus, relay (for external device control).
• Optional sound/light alarm – >90dB audible alarm + visual strobe; alarm point adjustable.
• Infrared remote control – Non intrusive setting of alarm points, zero calibration, and address modification.
• Optional wireless – LoRa or 4G for remote data access on PC/mobile.
• Rugged enclosure – Die cast aluminum, IP65 water/dust proof, explosion proof Ex d IIC T6 Gb.
• Corrosion resistant option – Sensor housing available in 316 stainless steel.
• Easy integration – G1/2″ external thread, M45×2mm thread size for explosion proof conduit.
• Low drift – Zero shift ≤ ±1% FS per year.

• Pharmaceutical cleanrooms – Vaporized H₂O₂ (VHP) sterilization cycles.
• Medical device sterilization – Monitoring residual H₂O₂ in chambers.
• Food & beverage processing – Aseptic packaging, surface disinfection.
• Wastewater treatment – H₂O₂ used for oxidation and odor control.
• Pulp & paper bleaching – Monitoring in bleach plants.
• Textile bleaching – Worker exposure monitoring.
• Semiconductor manufacturing – H₂O₂ used in wafer cleaning.
• Laboratories – Chemical storage and fume hood areas.

1. How do I adjust the alarm setpoints?

Use the included infrared remote controller – no need to open the enclosure. Point it at the detector and adjust low/high alarm values.

2. Does the detector come with a sound/light alarm?

It is optional. Please specify when ordering if you require an integrated or external sound/light alarm (>90dB).

3. What is the lifespan of the H₂O₂ electrochemical sensor?

Typically 1–2 years depending on exposure to target gas and environmental conditions.

4. How often should I calibrate the detector?

A bump test is recommended before each use. Full calibration every 6–12 months or as required by site safety procedures.

5. Can I connect the YT-95H to my existing PLC?

Yes. It provides 3-wire 4-20mA and RS485 Modbus outputs, compatible with most control systems.

6. Is the detector suitable for outdoor installation?

Yes. It has IP65 protection (dust-tight, protected against water jets) and a wide operating temperature range (-20°C to +50°C).

7. What is the relay used for?

The relay can directly trigger external alarms, exhaust fans, solenoid valves, or other devices when gas levels exceed setpoints.

8. Can I monitor data remotely?

Yes, with the optional LoRa or 4G wireless module, you can view real-time data on a PC, laptop, or mobile phone remotely.

9. What is the power supply requirement?

12–36V DC. Typical consumption <2.5W (toxic gas version).

10. What is the warranty?

1 year for the transmitter. Sensors have a shorter warranty (typically 1 year for electrochemical sensors).

Shenzhen YuanTe Technology Co., Ltd. (brand: Safegas) was established in 2010 and specializes in the R&D, manufacturing, and sales of gas detection equipment and integrated systems. With over 16 years of industry expertise, the company serves sectors including oil & gas, chemicals, environmental protection, electronics, municipal engineering, agriculture, and household appliances. All products are manufactured under ISO9001 and ISO45001 management systems, holding international certifications such as IECEx, ATEX, and EMC. With an annual production capacity of over 80,000 units, YuanTe Technology supplies gas detection solutions to customers worldwide.

• Established since 2010 – Over 16 years of experience in gas detection R&D and manufacturing.
• Full product range – Portable detectors, fixed transmitters, analyzers, control panels, docking stations, accessories.
• International certifications – IECEx, ATEX, EMC certified for hazardous areas.
• Wide gas & industry coverage – Hundreds of gases; serve oil & gas, chemical, environmental, food, pharma, and more.
• Strong R&D & quality – ISO9001 & ISO45001 certified; professional R&D team and global service network.
• High production capacity – Over 80,000 units per year with fast delivery (5–7 working days typical).
• Global customer support – 24/7 after-sales service and solutions tailored to diverse industries.