ShenzhenYijiajie Electronic Co., Ltd.
| Power supply | DC/AC 1.8±0.18V |
| T90 response time | ≤10s |
| Packaging Details | Palletized |
| Storage conditions | -30℃ ~ +70℃ |
| Supply Ability | 1500 |
| Daily repeatability accuracy | ±0.5mV |
| Payment Terms | L/C,D/A,D/P,T/T, |
| Working power current | 120 - 130mA |
| Design service life | ≥5 years |
| Delivery Time | 5-8 days |
| Measurement range | 2%- 100% VOL |
| Gas sensitivity | 0.2 mV / 1% - CO2 |
| Model Number | NAP-21A |
| Place of Origin | Japan |
| Brand Name | YJJ |
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Product Specification
| Power supply | DC/AC 1.8±0.18V | T90 response time | ≤10s |
| Packaging Details | Palletized | Storage conditions | -30℃ ~ +70℃ |
| Supply Ability | 1500 | Daily repeatability accuracy | ±0.5mV |
| Payment Terms | L/C,D/A,D/P,T/T, | Working power current | 120 - 130mA |
| Design service life | ≥5 years | Delivery Time | 5-8 days |
| Measurement range | 2%- 100% VOL | Gas sensitivity | 0.2 mV / 1% - CO2 |
| Model Number | NAP-21A | Place of Origin | Japan |
| Brand Name | YJJ | ||
| High Light | YJJ NAP-21A CO2 gas sensor ，thermal conductive gas sensor module ，CO2 detecting module 2-100%VOL | ||
Product Description:
YJJ NAP-21A N21A Thermal Conductive CO2 Gas Sensor 2-100%VOL Detecting Module
Features:
I. Product Introduction
NAP-21A is a thermal conduction principle CO₂ sensor that detects gases based on the difference in gas thermal conductivity. It can measure high-concentration CO₂ ranging from 2% to 100% VOL, and can operate normally even in an oxygen-free environment. It is suitable for monitoring in sealed chambers, incubators, and high-concentration gas tanks. It provides an analog voltage output with excellent linearity, and can also detect hydrogen, methane, propane, and inert gases.
II. Complete Technical Specifications
Detection Principle: Thermal Conduction (Gas Thermal Conductivity Temperature Difference Detection)
Target Detected Gas: CO₂, compatible with hydrogen, alkanes, and inert gases
Measurement Range: 2% - 100% VOL High Concentration CO₂
Power Supply: DC/AC 1.8 ± 0.18V (50 - 60Hz AC can also drive)
Working Power Consumption Current: 120 - 130mA @ 1.8V Supply
Zero Point Output: 0 ± 20mV
Gas Sensitivity: 0.2 mV / 1% - CO₂; 10% CO₂ Output 1.2 - 2.0mV
T90 Response Time: ≤ 10s
Single Day Repeatability Precision: Zero Point Drift ± 0.5mV
Long-Term Drift: Annual Zero Point Drift ≤ ± 2mV; Monthly Sensitivity Drift ≤ ± 2mV
Operating Temperature and Humidity: -10℃ ~ +50℃; RH < 95%, no condensation allowed
Storage Conditions: -30℃ ~ +70℃, RH < 99%, no condensation
Design Service Life: ≥ 5 Years (Civilian and Commercial Use)
Recommended Idle Storage Period: Within 6 Months
Output Type: Analog Voltage Signal Output
III. Core Product Advantages
Suitable for oxygen-free sealed environments, unaffected by oxygen deficiency, different from electrochemical sensors
0 - 100% Full Range Linear Analog Output, high-concentration CO₂ detection
Can also detect hydrogen, propane, isobutane, methane, and inert gases
Low long-term drift of zero point and sensitivity, excellent stability in sealed environments
Metal probe housing, small size, convenient for integration into various detection devices
Note: Sensor output is affected by temperature and humidity, circuit board needs to add temperature and humidity compensation circuit
IV. Industry Applicable Uses
CO₂ concentration monitoring in cell incubators, constant temperature incubators sealed chambers
High-concentration CO₂ monitoring in greenhouse sheds, controlled atmosphere refrigerated cold storage, fruit and vegetable storage warehouses
Inert gas, high-purity gas detection in storage tanks, sealed chambers, underground, storage tanks, and inert gases
Industrial high-concentration CO₂ alarm equipment, gas analyzers
Air monitoring in grain storage, refrigerated transport vehicle boxes, laboratory sealed containers
Specifications:
| Operating Voltage | DC 1.8 ± 0.1V or DC 4.0 ± 0.2V |
| Working current | 120 - 130 mA (typical value) |
| Sensitivity | 0.2 mV/%CO2 |
| Range | 0 - 100% CO2 |
| weight of the | <30g |
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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