On-line formaldehyde gas concentration detector product parameters

On-line formaldehyde gas concentration detector product features

● Intrinsically safe circuit design, explosion-proof certification, secondary lightning protection, anti-static, lightning protection and anti-static capabilities exceed national standards, and resist high-intensity pulse surge current impact. High reliability and stability.

● Standard bus RS485 and 4 ~ 20mA standard signals are output at the same time, one group of relay switch output, optional frequency output 200-1000Hz, 1~5V output, wireless transmission (10-50km or unlimited distance). It can be wired or wireless remote real-time monitoring, upload data to mobile phones or transmit to the Environmental Protection Bureau, other monitoring centers, monitoring equipment, and monitoring computers through local area networks and the Internet, and monitor the concentration of the site in real time through free upper computer software or gas alarm controllers.

● Compatible with all kinds of secondary table, data acquisition module, PLC, DCS system, can directly drive the solenoid valve, fan, alarm and other equipment, can also drive the intermediate relay to drive high-power equipment.

● Standard infrared remote control, can be achieved in dangerous situations without open cover operation.

● 2.5 inch HD color screen (TF) shows real-time concentration, temperature and humidity.

● Automatic zero tracking to prevent drift, temperature compensation, multi-level calibration, can also meet the national standard and local and provincial metrology bureau standards in various regions.

Application Scenarios

Petroleum and petrochemical, chemical plants, smelters, steel plants, coal plants, thermal power plants, pharmaceutical research, pharmaceutical production workshops, tobacco companies, environmental monitoring, school research, building construction, fire alarm, sewage treatment, industrial gas process control, boiler room, Garbage treatment plant, tunnel construction, oil pipeline, gas filling station, underground gas pipeline maintenance, indoor air quality inspection, safety protection in hazardous places, aerospace, military equipment monitoring, etc.
 

On-line formaldehyde gas concentration detector interface display introduction

The instrument has a total of 3 buttons, namely "add/cancel", "function/confirm", "move right/down" (hereinafter referred to as "add" ("cancel"), "function" ("confirm"), "move right" ("move left")). The three key positions are as follows. Press the "Function" button.

Internal Diagram of On-line Formaldehyde Gas Concentration Detector

On-line formaldehyde gas concentration detector can be used stand-alone

or connectionManagement control machine with the use of wiring diagram

4-20mA Wiring Definition Chart	RS485 Wiring Definition Chart

Installation position of online formaldehyde gas concentration detector

According to the specific gravity and wind direction of the gas, the detector should be installed within one meter from the place where the gas may leak, so that the actual response speed of the detector is relatively fast. Otherwise, the concentration of formaldehyde gas or toxic and harmful gas at the place where the detector is installed may not exceed the standard, while the local gas at the leak point has exceeded the standard, but the detector and the host cannot alarm.
 

The height of the detector should be more than 30cm from the ground to prevent water from splashing in. In general, the detection of harmful gases with a specific gravity less than that of the air, the probe should be installed above the house or equipment; the harmful gases with a specific gravity greater than that of the air, the probe should be installed close to the ground. The probe of the detector shall be installed downward. If it is installed outdoors, a rain shield shall be installed above the detector.

Note: The detection range of each probe in the open area is 60 square meters, and factors such as gas diffusion, wind direction, temperature, humidity and regional closure should also be considered. Protection measures such as dustproof, waterproof and high temperature protection should also be considered during installation.

Installation Method

Users can design their own fixed way. However, care should be taken to keep the sensor face of the probe perpendicular to the ground. After the probe is fixed, remove the screws on the upper cover of the shell, and insert the shielded (three-core 3 × 1.5mm) transmission cable through the wire passage. It is recommended to use shielded soft core (3 × 1.5mm) cable and connect the cable to the terminal position. After checking that the wiring is firm, fix the cable and the upper cover of the housing.