Several features to consider when choosing a gas detector

Now all walks of life are purchasing various kinds of gas detectors for safety. We now come to learn about several features that cannot be ignored in gas detectors.

1. This stability stability is a must. The issue we first considered.

What is the zero offset and full amplitude offset value, the smaller the better.

What is the effect of interfering gases? All gas detectors other than oxygen have a large or small response to other gases. The most common one is the electrochemical sensor that detects hydrogen sulfide, so the user must be as knowledgeable as possible. Possible gas in the space. For direct-reading instruments, the interference of interfering objects is not an easy problem to overcome. Therefore, in any case, if the direct-reading instrument is not evaluated due to interference, direct-reading instruments are not recommended, and direct reading is not recommended. The instrument replaces the sampling analysis method.

2. Convenience and Convenience Now we are all working outside. On the premise of stability, convenience is also a factor to be emphasized. It is lightweight, small in size, easy and comfortable to wear, easy to maintain.

Does the sensor use smart sensor technology Smartsensortechmology. Priority is given to the use of smart sensor technology, which can swap different sensors on the same instrument to suit different applications.

3. Correct demand correction methods, duration, and ease of use. There are two types of calibration methods—laboratory and on-site calibration. On-site calibration is the exhalation of the oxygen sensor. The oxygen reading of the instrument must be reduced and an alarm must be generated.

4. Applicability The identification and assessment of the hazardous gas used to perform the limited space work site shall be performed by the company’s professional staff and experienced field supervisors or employees to determine whether the selected detector's sensor meets the requirements for use.

5. Reliability The longer the sensor life, the better. In general, the sensor life is at least 2 years, and the flammable gas sensor is 2 to 5 years.

The longer the average error time, the better.

What is the accuracy and precision? The smaller the error, the better.

The product warranty period is generally 2 years.

6. The protection requires whether the explosion-proof safety class applies to the workplace, whether intrinsic safety is certified, whether it is explosion-proof or only intrinsically safe.

Anti-electromagnetic wave rating. Because electromagnetic waves generate inductive currents and cause errors or instability in the reading of the instrument, the sources of electromagnetic waves are generally radios, radios, and mobile phones that emit electromagnetic waves.

Whether it can be used in harsh environments, and can withstand abnormal conditions of use, impact resistance, collision or drop, waterproof and dustproof grade, sensor corrosion proof data.

7. Easy-to-recognize numeric or pointer gas detectors. In general, numerical models have the advantages of easy reading and less misjudgment.

The display area is large enough, with background lighting and large fonts to facilitate reading and understanding.

Whether the siren is large enough to distinguish it from background noise. It is generally effective at 90dB (A) or more.

Whether the alarm flash can be recognized from various angles.

Is it possible to continuously display the signal with changes in the measured gas concentration, and to stop the alarm after confirmation or countermeasures are taken.