5 standartlar için gaz dedektör algılama
1. İncele görünüm ve diğer öğeler
To detect the appearance of gas detectors, we need to avoid minor issues that may arise during transport or production assembly. We need to inspect the appearance of the gas detector for defects, cracks, or damage, and check the integrity of the entire gas detector component structure. At the same time, check the machine model, label, manufacturer's name, and factory time on the gas detector body one by one with the instructions or information provided by manufacturer to ensure accuracy. At the same time, it is required to verify the explosion-proof sign, measurement permit sign, and number of this gas detector, which must be complete and clear. Some documents can be required from the manufacturer to provide.
2. Güç açık denetim
Çalışma of a gaz dedektör gerektirir a güç kaynak, olan olan genellikle güç verilen a dahili pil. İhtiyacımız açma açma the switch to check the gas detector is powered on normalde. Some gas detectors can continue to work by replacement the battery, while others donanımlı with a charger. For gas detectors donanımlı a charger, we need to test the the charger is charger düzgün. Ne zaman güç açık normalde% 2c İhtiyacımız var kontrol etmek eğer ekran ekran gaz dedektörü çalışıyor düzgün çalışıyor.
3. Kontrol eğer ses ve ışık alarm of the enstrüman is normal
gaz dedektörler sesli ve görsel alarm sinyalleri% 2c as onlar onlar güç güç piller% 2c ne zaman düşük voltaj görüntülenir % 2c onlar olmalı mümkün yaymak bir sesli veya görsel gösterge sinyal bu önemli ölçüde farklı alarm sinyal.
2, Endikasyon hata
Biz satın alınan a gaz dedektör to detect gas concentration. The gas detector cannot display gas concentration correctly, and there is an error. Ancak, there is a range of errors. If the error aşıyor this range, it gösterir that the gas detector doesn not meet the standard. The specified display error for different gas is different. For example, it is normal for the indication error of oxygen to be within ± % 7b{0}} and 5 percent VOL.
2c Alarm hata
In addition to the error in displaying numerical values, there are also certain allowable errors in the alarm values of gas detectors, as the instrument is affected by various factors and cannot alarm at an correct concentration every time. Bu nedenle, the alarm concentration is allowed to have errors, as long as the error is within the standard range. The alarm error for different gas also varies, for example, the alarm error for oxygen is within ± 0, 1 percent VOL.
4, Yanıt süre
yanıt zaman gösteren için teker gerekli gaz tektektör to yüksel sıfır 90 yüzde of the kararlı ekran değer o the enstrüman olmalı başarmalı. Orada var ayrıca standart gereksinimler için bu zaman, ve bu standart, beğen gösterge hata ve alarm hata, değişken için farklı gaz yanıt zamanlar.
5, İzolasyon ve dayanım gerilim
For gas detectors, there are also some insulation and voltage withstand standards that must be met. The standard requirements are: at room temperature: Greater than or equal to 100M Ω; After damp heat: Greater than or equal to 1M Ω. The insulation strength should be able to withstand a 500V AC voltage for 1min, and there should be no discharge or breakdown phenomena. Only after these are met can this gas detector meet the standards.
