Product Description:

YJJ 4H2S-2000 052-0600-000 Electrochemical Hydrogen Sulfide Sensor 0-2000 ppm for Portable/Fixed Detectors

Features:

I. Core Parameters (20℃, 50% RH)

1. Measurement Performance

Measurement Gas: Ammonia (NH₃)

Range: 0–100 ppm

Maximum Overload: 200 ppm (short-term) 

Sensitivity: 0.135 ± 0.035 μA/ppm 

T90 Response Time: ≤ 90 s 

Baseline (Zero Point): < ±0.4 μA 

Baseline Drift (-40 to 50℃): < 2 ppm 

Resolution: 0.5 ppm 

Linearity: Full-scale linearity

Bias Voltage: 0 mV (no bias circuit required)

2. Environment and Electrical

Operating Temperature: -40 ℃ ～ +50 ℃ 

Humidity: 15%–90% RH (no condensation) 

Pressure: 1 atm ±10%

Load Resistance: Recommended 10 Ω

Life: Approximately 2 years in air 

Long-Term Stability: < 2% Signal Value / Month 

Storage Conditions: 10–30℃, Storage Period 6 Months 

3. Physical and Safety

Size: Φ20.2 mm × Height 16.5 mm (Pin Length 12 mm)

Weight: Approximately 5 g

Shell: ABS, 3 Pins (+, -, NC)

Safety Integrity: Current < 0.2 mA at 200 ppm, Open Circuit Voltage 1.3 V 

II. Typical Applications

1. Refrigeration / Cold Chain (Core Scenario)

Cold Storage, Refrigeration Units, Ammonia Compressor Rooms for Ammonia Leak Monitoring (0–100 ppm)

Food Processing, Slaughterhouses, Cold Chain Logistics Ammonia Poisoning / Explosion Warning

2. Chemical / Fertilizer

Production Process of Synthetic Ammonia, Urea, Compound Fertilizer Plants for Online Ammonia Monitoring

Reactor Vessels, Pipelines, Storage Tanks Leak Alarm (Occupational Health + Explosion Protection)

3. Environmental / Municipal

Landfill Sites, Sewage Treatment Plants, Sewer NH₃ Odor / Toxicity Monitoring

Aerated Air Monitoring, Park Unorganized Emission Monitoring

4. Agriculture / Livestock

Livestock Farms (Chicken Coops, Pig Coops) Ammonia Concentration Monitoring (Animal Health + Personnel Safety)

Ammonia Detection in Greenhouses, Composting Sites

5. Portable / Fixed Detectors

Single / Multi-Functional Gas Detector (NH₃ + CO + H₂S + O₂)

Explosion-proof Fixed Detector, Portable Pump-In / Diffusion Alarm Instrument

Direct Replacement of CITY, Alphasense, etc. 4 Series Compatible NH₃ Sensors

Specifications: