Overview
The BH-90A-H2S is a cost-effective Portable single Gas detector of the BOSEAN brand, specially designed for the detection of hydrogen sulfide (H2S) gas. The instrument adopts mainstream 8-bit micro-control technology, and has the characteristics of fast Response speed, high Measurement accuracy, good Stability and Repeatability, and simple operation. The fuselage is compact, made of high-strength ABS material, and has IP65 protection level, which can withstand the test of harsh environment. The instrument is equipped with two-stage triple alarm (sound, light, vibration). High and low alarm values can be set, which is safe and reliable. Built-in 3.7V rechargeable lithium battery, which can work continuously for more than 10 hours.
Features
1. Industrial Sensor with High Sensitivity.
2. Mainstream 8-bit micro-control technology, stable performance.
3. The fuselage is compact and easy to operate.
4. With IP65 protection level, it is highly waterproof.
5. Long standby time, continuous operation for more than 10 hours (gas can be used for no less than 7 hours).
6. Equipped with two-level triple alarm (sound, light, vibration), it is not easy to ignore.
7. High and low alarm values can be set.
8. Supports more than 30 types of Sensors, and can flexibly configure customized gases according to customer needs.
Principle
The Portable Gas detector uses the diffusion Sampling method, and the gas to be measured enters the instrument through natural diffusion. The instrument has a built-in Electrochemical sensor for hydrogen sulfide (H2S). When the gas comes into contact with the Sensor, a chemical reaction occurs to generate an electrical signal proportional to the gas concentration. The signal is processed by an 8-bit microcontroller, and finally the real-time concentration value is displayed on a 1.77-inch high definition screen. When the concentration reaches a preset low or high alarm point, the instrument will trigger a triple alarm of sound, light and vibration.
Applications
Petrochemicals, municipal gas, environment monitoring, emergency rescue, sewage treatment, coal mining, metallurgical smelting, laboratory research
Standards
GB3836.1-2010、GB3836.4-2010、GB15322.3-2003、JJG693-2011、JJG365-2008、JJG695-2003、JJG915-2008
Steps
1. Power on: Press the power button for a long time to start the instrument, wait for the self-test to complete and enter the detection state.
2. calibrating: according to the service cycle or related procedures, the use of standard gas for zero and range calibrating.
3. Detection: Carry the instrument to the test area, ensure that the Sensor (located at the front end of the instrument) is exposed to the air, and wait for the reading to stabilize.
4. Alarm settings: In the settings menu, low alarm values (e.g. 10 ppm) and high alarm values (e.g. 20 ppm) can be set according to safety specifications.
5. Data viewing: Historical alarm records (up to 1000 sets) can be viewed through the menu.
6. Charging: When the power is insufficient, use the matching charger to connect the instrument for charging, and the Charging time is less than 5 hours.
Notice
• Before first use or after a long period of inactivity, it is recommended to calibrate to ensure measurement accuracy.
• Sensor life of the instrument is about 2 years, and it needs to be replaced in time when it expires.
• Do not use under conditions exceeding the working Ambient Temperature (-20~ 50 ℃) and Humidity (0~ 95% RH non-condensation).
• Avoid severe impact or drop of the instrument to prevent damage to internal Sensors and circuits.
When calling the police, evacuate to a safe area immediately and identify the cause.
• Please use the original charger when charging and ensure that the environment ventilates well.
• The explosion-proof mark of the instrument is Exib IIB T3 Gb, please use it in the specified explosion-proof area.
• Do not disassemble or modify the instrument yourself.
• Specific alarm point settings should refer to relevant industry safety standards and regulations.
