ShenzhenYijiajie Electronic Co., Ltd.
| Baseline current | < ±0.2 μA |
| Response time (T90) | ≤ 60 seconds |
| Operating humidity | 15% ~ 90% RH |
| Resolution | 80 ppm |
| Operating temperature | -20°C ~ +50°C |
| Range | 0 - 40000 ppm |
| Delivery Time | 5-8 days |
| Long-term stability | < 2% signal |
| Payment Terms | L/C, D/A, D/P, T/T, , |
| Bias voltage | 0 mV |
| Supply Ability | 1500 |
| Packaging Details | Canned |
| Model Number | 4H2-40000 CLE-0644-400 |
| Brand Name | YJJ |
| Place of Origin | Britain |
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Product Specification
| Baseline current | < ±0.2 μA | Response time (T90) | ≤ 60 seconds |
| Operating humidity | 15% ~ 90% RH | Resolution | 80 ppm |
| Operating temperature | -20°C ~ +50°C | Range | 0 - 40000 ppm |
| Delivery Time | 5-8 days | Long-term stability | < 2% signal |
| Payment Terms | L/C, D/A, D/P, T/T, , | Bias voltage | 0 mV |
| Supply Ability | 1500 | Packaging Details | Canned |
| Model Number | 4H2-40000 CLE-0644-400 | Brand Name | YJJ |
| Place of Origin | Britain | ||
| High Light | electrochemical hydrogen H2 sensor ，hydrogen leakage detection sensor ，gas sensor with warranty | ||
Product Description:
YJJ 4H2-40000 CLE-0644-400 Electrochemical Hydrogen H2 Sensor for Hydrogen Leakage Detection
Features:
I. Core Parameters (Standard Specifications) Table
Parameters Typical Value Explanation
Model 4H2-40000 / CLE-0644-400 - Classic Line 4 series
Detected Gas Hydrogen (H₂) High selectivity
Detection Principle Triple-electrode potentiometric electrolysis type Miniature fuel cell type, linear current output
Range 0 ~ 40000 ppm Reaches from 0 to 100% lower explosive limit (LEL)
Sensitivity 0.007 ± 0.002 μA/ppm Current is proportional to concentration
Baseline Current (20°C) < ±0.2 μA Zero point stable
Resolution 80 ppm Meet industrial safety warning requirements
Response Time (T90) ≤ 60 seconds Quick response
Linearity Linear Full range linear output
Long-term Stability < 2% signal value / month Drift small, reliability high
Operating Temperature -20°C ~ +50°C Wide temperature industrial grade
Operating Humidity 15% ~ 90% RH (no condensation)
Operating Pressure 91 ~ 111 kPa
Bias Voltage 0 mV No external polarization voltage required
Size Φ20.2 × 16.6 mm Standard 4-series industrial package (Φ20mm)
Weight Approximately 5 g
Service Life Airborne > 2 years
Warranty Period 12 months
Features Position-independent, anti-interference, wide temperature range, low cost
II. Core Advantages
Ultra-large range: 0~40000 ppm (100% LEL), capable of measuring from trace leakage to high concentration environments.
Industrial-grade stability: Wide temperature, wide humidity, low drift, suitable for harsh conditions.
Standard packaging: Φ20mm universal size, compatible with most portable/fixed detection instruments.
No bias voltage: 0 mV bias, simple circuit, low power consumption.
High cost-effectiveness: - quality, suitable for batch industrial applications.
III. Typical Applications
Portable/Fixed hydrogen gas detector
H₂ leakage alarm in chemical industry, pharmaceutical industry, electronics factory, power plant, battery factory
Safety monitoring for hydrogen storage and transportation, hydrogen filling stations, hydrogen fuel cell vehicles
H₂ concentration detection in coal mines, metallurgy, laboratory sealed spaces
Industrial safety and process monitoring
H₂ concentration control in electrolysis water production, chemical synthesis, hydrogen reaction
H₂ leakage warning in substations, UPS, energy storage stations (lead-acid / lithium batteries)
Online monitoring of hydrogen leakage in pipelines, valves, storage tanks
Environmental protection and special scenarios
H₂ monitoring in landfill sites, sewage treatment plants
H₂ safety control in aerospace, submarine cabins
H₂ analysis in welding shielding gas, metal heat treatment atmosphere
Specifications:
| Measurement range | 0-40000 ppm |
| Resolution | 80 ppm |
| Repeatability | ±2% |
| Response time (T90) | ≤ 60 seconds |
| Operating pressure | 91 ~ 111 kPa |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph... Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph...
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