Anchor Sense is the international trading brand of Qihang Sensing (Shenzhen) Technology Co.,Ltd, specializing in global gas sensor supply, covering CO, combustible gas, oxygen, hydrogen sulfide for industrial safety, and VOC, NOx, SO₂, particulate matter for environmental monitoring. We match the optimal sensing solution from a trader’s perspective.
Product Matrix
From industrial safety to environmental monitoring, we offer multi-principle, multi-range sensor selection matched to your application.
Core monitoring gases that protect personnel and facilities
Key factors supporting air & environmental quality monitoring
Featured Brands
From a trader’s perspective, we integrate premium sensing resources. Electrochemical, infrared and optical routes complement each other across more operating conditions.
Using solid-polymer electrochemical technology focused on toxic and harmful gas detection, with fast response, high accuracy and stable lifespan—an optimal choice for industrial safety and personnel protection.
Based on Non-Dispersive Infrared (NDIR) technology focused on multi-gas infrared detection such as CO₂, CH₄, SF₆. Poison-resistant, minimal long-term drift, maintenance-free calibration—ideal for harsh industrial environments and continuous online monitoring.
Optical-based combustible gas sensors focused on hydrogen, methane and other flammable/explosive gases. No catalytic poisoning risk, long-term stable, maintenance-free—suited to industrial sites, utility tunnels and energy-storage safety scenarios.
Applications
Whether on the industrial floor or in the urban environment, gas sensing is the first line of safety and compliance.
Real-time monitoring of toxic & harmful gases and personnel protection in petrochemical, metallurgy, coal mining, etc.
Related: DS4 smart digital sensors · ppm-level toxics · Workplace CO limits & alarm setpoints · All-gas equivalent · H₂S / NH₃
Gas-leak early warning in plants, building safety lines with explosion-proof electrical.
Related: Yixin NDIR methane · 100% VOL · Xingpu low-power optical · 100% LFL · Combustible gas detection & alarm setpoints
Grid-based monitoring of VOC, NOx, SO₂ and particulates for compliant emissions.
Related: CO₂ sensors · flue gas & greenhouse · Wastewater odour monitoring · VOC sensor vs PID cost comparison
Household combustible gas detectors, CO alarms and building air-quality monitoring.
Related: Household combustible gas detector sensors · EC Sense bare cells · high-volume builds · Indoor air quality monitoring
Early gas-safety warning for battery cabins, charging stations, etc.
Related: DS4 smart digital sensors · Combustible gas sensors · methane leaks · Low-power infrared · battery-powered nodes
Gas safety monitoring and pre-entry testing in underground utility tunnels, manholes and pump stations.
Related: CO sensors for confined spaces · TB600B&C smart detection modules · Wastewater odour monitoring
Refrigerant safety: ammonia in the plant room, R744 and low oxygen inside the rooms, O₂ and ethylene in CA stores.
Related: Refrigerant leak detection · R32 / R290 NDIR · R744 carbon dioxide sensors · DS4 smart digital sensors · NH₃ / C₂H₄
ppm-level monitoring of phosphine and arsine at gas cabinets, silane, diborane and germane, halogens in etch and clean, lithography solvents and SF₆.
Related: TB420 · silane / diborane / germane transmitters · TB200B modules · Cl₂ / Br₂ / HF halogen channels · SF₆ infrared detection, 0–1000 ppm
H₂S and NH₃ as odour indicators in the inlet and sludge stages, digester methane for explosion protection, toxicity alarms in chlorination and ozone rooms.
Related: DS4 smart digital sensors · H₂S / NH₃ / Cl₂ · Biogas methane NDIR · poison-proof · Wastewater odour monitoring vs olfactometry
Insights
Standards, alarm thresholds and cost models behind the four applications we get asked about most — each note points to the exact models we supply.
The sensor that works perfectly at the fence line usually pins at full scale within a week of being mounted on the stack. The cause is not accuracy but scale: the same component spans two to three orders of magnitude between the two locations, and an undersized range raises no error — it simply outputs a very stable full-scale number. This article covers how to size the range backwards from the emission limit and the reference oxygen basis, why the sample-conditioning figures are set where they are, and why the oxygen channel deserves a channel of its own.
Three of the most underestimated cylinders in a fab are silane, diborane and germane. Their occupational exposure limits are 5, 0.1 and 0.2 ppm respectively, while their flammable ranges begin at 0.8% – 2.8% vol — so a set point driven by flammability would wait until personnel were thousands of times over the limit. Written for specialty-gas system integrators, facility designers and EHS teams, this note covers four things: why the exposure limit and the flammability limit must drive separate set points, how to size the range, how large the hydrogen cross-sensitivity actually is, and how the three gases' densities change where detectors go.
Fatal confined space incidents follow a pattern: the lethal entry usually comes after someone already tested the space and found it clear. Gas does not sit still — hydrogen sulphide is heavier than air and creeps up from the pit floor, methane is lighter and collects at the tank roof, and oxygen deficiency has neither smell nor warning. This guide breaks confined space monitoring into the four things you have to get right: the pass/fail limits, the test sequence and sampling points, the four sensors to choose, and the calibration records that prove it. Every figure carries its regulatory source, so it can go straight into an entry procedure or a purchase specification.
This is a case about lead time. The milestone was the following Tuesday; the existing source answered with a range — out of stock, four weeks, no firm date. Here is exactly what we did, and what we did not do.
About
Anchor Sense is the international trading brand of Qihang Sensing (Shenzhen) Technology Co.,Ltd, dedicated to sensor selection and supply for equipment manufacturers, system integrators and end users in industrial safety and environmental protection.
We don’t bid for tenders; instead, from a trader’s perspective, we help customers find the most suitable sensing solution—from electrochemical, infrared to optical sensing, from point detection to continuous online monitoring—matched on demand, stably supplied, and continuously followed up.
Work with usContact
Leave your requirements and we’ll match the most suitable sensor solution and quote. Or reach us directly below.
