Ammonia alarm is the 1 alarm that can effectively prevent the occurrence of ammonia poisoning accidents. It is mainly used to detect the leakage of indoor and outdoor dangerous places and is an important instrument to ensure production and personal safety. When there is ammonia in the measured place, the ammonia alarm converts the gas signal into a voltage signal or a current signal and transmits it to the ammonia alarm instrument, which displays the percentage concentration value of the lower explosion limit of ammonia gas. When the ammonia concentration exceeds the alarm set value, sound and light alarm signals will be issued, and the personnel on duty will take timely safety measures to avoid explosion accidents. In order to ensure safety, we also need to pay attention to related matters when applying ammonia alarm. So what are the precautions for the application of Ammonia Alarm ? The following is a brief introduction by yi yun Tian:

Ammonia Alarm Application Notes:

1. find out what possible leakage points the device to be monitored has, analyze their leakage pressure, direction and other factors, and draw the probe position distribution map, which is divided into three grades I, II and III according to the severity of the leakage.

2. According to the specific factors such as the airflow direction and wind direction of the place, judge the leakage direction of ammonia when a large amount of leakage occurs.

3. according to the density of the leaking gas (greater than or less than air) and the air flow trend, the three-dimensional flow trend chart of the leakage is integrated, and the initial point setting scheme is made at the downstream position of the flow.

4. Study whether the leakage state of the leakage point is micro-leakage or jet. If it is a slight leak, the location of the set point should be close to the leak point. In the case of a jet-like leak, move slightly away from the point of the leak. Based on these conditions, a plan for setting up a site was drawn up. In this way, the quantity and variety of purchases that need to be made can be estimated.

5. for places with large ammonia leakage, a detection point shall be set every 10-20m according to relevant regulations. For unattended small and discontinuous pump room, it is necessary to pay attention to the possibility of toxic gas leakage. Generally, an ammonia gas alarm should be installed at the downwind.

6. For places with hydrogen leakage, the ammonia alarm should be installed on the plane above the leakage point.

7. For media with gas density greater than air, the ammonia alarm should be installed on the lower plane below the leak point, and pay attention to the characteristics of the surrounding environment. Special attention should be paid to the setting of safety monitoring points for places prone to the accumulation of toxic gases.

8. For the open toxic gas diffusion and escape environment, if there is no good ventilation condition, it is easy to make the content of toxic gas in a certain part of the air close to or reach the lower explosive limit concentration. These are the safety monitoring points that can not be ignored. According to the analysis results of on-site accidents, more than half of them are caused by incorrect installation and calibration. Therefore, it is necessary to introduce the correct installation and calibration considerations to reduce the failure.

To sum up, it is the application precautions of ammonia gas alarm. In order to correctly apply the ammonia alarm and prevent the occurrence of faults, please do not install it in places with strong electromagnetic fields, places with temperatures below -40 ℃ or above 55 ℃, places with large air flow such as air supply ports, ventilation fans, doors, etc. or places directly affected by steam and oil fumes, so as not to affect the normal use of ammonia alarm.