7702 AZ
NEW
High Accuracy CO Meter w/IR Output
Features
AZ 7702 High Accuracy CO Meter w/IR Output features:
* Designed to meet CNPG and EN50543 standards
* Precision carbon monoxide sensor up to 3ppm accuracy
* Long life and reliable electrochemical CO sensor
* Carbon monoxide audible alert is adjustable up to 200 ppm, preset at 15ppm
* Manual zeroing feature to cancel background influence
* Calibratable at 0,100 and 400ppm CO standard gas
* IR output to external printer for real time receipt printing
Application
Application of AZ 7702 High Accuracy CO Meter w/IR Output:
The AZ 7702 High Accuracy CO Meter w/IR Output is designed to meet requirement of NF P45-500 and NF X50-010 which are major technical foundation for CNPG's audits and evaluations. In addition to this, the AZ 7702 High Accuracy CO Meter w/IR Output meets the design requirement of EN 50543 which is commonly used in EU and worldwide.
The Centre National d'Expertise des Professionnels de l'Énergie Gaz (CNPG is a French organization specializing in expertise, training, and certification for professionals in the energy and gas sector.
The NF P45-500 is a French standard that outlines the procedures for conducting safety diagnostics of interior gas installations in residential buildings.
The NF X50-010 is a French standard that defines the characteristics and conditions for maintenance subscription contracts for domestic gas-fired boilers with a useful output of 70 kW or less
EN 50543 is a European Standard that specifies the requirements for the construction, testing, and performance of electronic portable and transportable apparatus designed to detect and measure carbon dioxide (CO₂) and/or carbon monoxide (CO) in indoor ambient air.
The AZ 7702 High Accuracy CO Meter w/IR Output is a precision carbon monoxide (CO) detection device tailored for professional use in the energy, gas, and indoor air quality sectors. Here are some potential applications for AZ 7702 High Accuracy CO Meter w/IR Output:
1. Safety Diagnostics of Gas Installations
-Context:
The device meets CNPG (Centre National d'Expertise des Professionnels de l'Énergie Gaz) and EN 50543 standards, which are linked to safety diagnostics and CO detection in residential and indoor environments.
- Use:
Professionals can use this device to inspect and diagnose gas installations in homes or buildings (e.g., per NF P45-500 standards) to ensure they are free from dangerous CO leaks. The precision sensor (up to 3ppm accuracy) and adjustable audible alert (preset at 15ppm, adjustable up to 200ppm) make it ideal for early detection of CO buildup.
2. Maintenance of Domestic Gas-Fired Boilers
- Context:
Compliance with CNPG standards suggests compatibility with maintenance protocols like NF X50-010 for gas boilers (up to 70 kW).
- Use:
Technicians can use the device during routine maintenance of gas boilers to monitor CO levels, ensuring safe operation. The calibratable feature (at 0, 100, and 400ppm) and manual zeroing allow for accurate measurements even in environments with background CO interference.
3. Indoor Air Quality Monitoring
- Context:
EN 50543 specifies requirements for CO detection in indoor ambient air.
- Use:
The device can be employed in homes, offices, or public buildings to monitor air quality and detect CO from sources like faulty heating systems, stoves, or poor ventilation. The long-life electrochemical sensor ensures reliability over extended use, while the IR output to an external printer provides real-time documentation for reporting or compliance purposes.
4. Emergency Response and Occupational Safety
- Context:
The high-precision CO sensor and adjustable audible alert make it suitable for rapid response scenarios.
- Use:
Firefighters, gas utility workers, or safety inspectors can use it to detect CO leaks in confined spaces or during emergency situations. The ability to calibrate and zero the device ensures accurate readings in varying conditions, while the audible alert warns users of rising CO levels.
5. Regulatory Compliance and Auditing
- Context:
The device’s alignment with CNPG and EN 50543 standards, along with its IR printing capability, supports professional audits and certifications.
- Use:
Energy and gas professionals can use it to perform certified evaluations of gas systems or indoor environments, providing printed receipts as evidence of compliance with safety standards for clients or regulatory bodies.
Summary of Key Benefits for Applications:
- Precision and Reliability: The 3ppm accuracy and long-life electrochemical sensor ensure trustworthy CO detection.
- Flexibility: Adjustable alerts, manual zeroing, and calibration options make it adaptable to different environments and standards.
- Documentation: The IR output for real-time printing supports professional reporting and compliance verification.
- Standards Compliance: Meeting CNPG and EN 50543 ensures it’s suitable for regulated industries across Europe and beyond.
The AZ 7702 High Accuracy CO Meter w/IR Output is well-suited for professionals in gas safety, HVAC maintenance, indoor air quality assessment, and emergency services, providing a versatile tool for both routine checks and critical interventions.
The AZ 7702 High Accuracy CO Meter w/IR Output was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.
CO levels and its effect
| ppm | Symptoms and applicable standard |
| 0-1 | Normal background levels |
| 9 | Maximum indoor air quality level: Maximum allowable concentration per ASHRAE Residential standards 62-1989 for living area. |
| 25 | Maximum limit 8 hrs of continuous exposure per California OSHA workplace standards. |
| 35 | Maximum 8 hrs average exposure level per US OSHA workplace standards |
| 50 | Maximum concentration for continuous exposure in any 8 hrs average level per OSHA standards. |
| 100 | Remove employees from enclosed space if the CO concentration exceeds 100ppm per OSHA exposure limit. |
| 200 | Mild headache, fatigue, nausea and dizziness within 2-3 hrs. |
| 400 | Frontal headache, life threatening after 3 hrs. Maximum concentration in flue gas per the US EPA and AGA standards. |
| 800 | Dizziness, nausea, convulsions, death within 2-3 hrs. |
| 1600 | Nausea w/i 20 min.,death w/i 2-3 hrs |
Specification
Specification of AZ 7702 High Accuracy CO Meter w/IR Output:
| Model | 7702 |
| CO Range | 0~1000 ppm |
| CO Resolution | 1 ppm |
| CO Accuracy (at 20±5℃, 50±20%RH) |
±3ppm at 0~20 ppm; ±5ppm at 21~100 ppm, ±10% at 101~500 ppm; ±20%ppm at 501~1000 ppm, |
| T90 Response Time | within 60 seconds |
| TA Range | -20.0~60.0℃ (-5.0~140.0℉) |
| TA Resolution | 0.1 ℃ (℉) |
| TA Accuracy | ±0.6℃ at 5~40℃; ±1.0℃ at others, ±1.0℉ at 41~104℉; ±1.8℉ at others |
| T90 Response Time | within 120 seconds |
| CO Warm Up Time | 30 seconds |
| Real Time Display | YES. 24H/AM/PM hh:mm:ss, MM-DD-YY |
| LCD Size | 26(H) * 44(W) mm |
| Meter Size | 205(L) * 70(W) * 56(H)mm |
| Operating Temperature | 0~50℃ |
| Operating RH% | 10~95% RH (avoid condensation) |
| Storage Temperature | -20~60℃ |
| Storage RH% | 0~95% RH (avoid condensation) |
| Power Supply | 4 PCS AAA Batteries |
| Battery Life | 700 hours (<1.4mA while backlight is off) |
| Weight | ~163g |
| Standard Package | Meter, Manual, Batteries, Hard carry case, |
| Optional accessory | Portable IR printer- model 88998 |