Hydrogen sulphide gas analysers

Analysis of hydrogen sulphide concentrations - hidden dangers and control measures

Hydrogen sulphide (H2S) is a colourless gas with an acrid odour, high concentrations of which are very dangerous for humans and the environment. The odour is not the only nuisance from this substance. Hydrogen sulphide worsens human well-being and in certain situations can even lead to death. It is many times heavier than air and can be explosive when mixed with oxygen. In the nature hydrogen sulphide is formed at volcanic emissions, in mineral springs, as a result of decay of organic substances. Also ecologists note the variability of total hydrogen sulphide content in the atmosphere and sea under the influence of anthropogenic factors.

Enterprises that deal with this gas are making more and more efforts to minimise its emissions. At industrial objects modern means of ecological monitoring, in particular, gas analysers for definition of hydrogen sulphide content are used. Such equipment is capable to fix critical concentration of toxic gas as accurately and quickly as possible. Regular measurement of hydrogen sulphide with the help of such equipment allows to avoid irreversible consequences for personnel, production and environment.

Purpose of hydrogen sulphide gas analysers

Hydrogen sulphide gas analysers are relevant for various enterprises that work with hydrogen sulphide. In industry, this substance is used for oil extraction, in the manufacture of gelatin, glue, sulfuric acid. In small concentrations, it is used in sanatorium treatment, as well as in agriculture for pest control. Excessive hydrogen sulfide content can be observed in various technological wells, at chemical industry facilities, during the production of asphalt. Accordingly - in all these cases it is impossible to do without gas analysing equipment.

Separately it is necessary to allocate the portable gas analyser of hydrogen sulphide, which can be applied for samples on those areas of the enterprise where there are no sockets. Thanks to its compact size and mobility, the equipment is generally suitable for measuring gas in a wide range of locations:

• large water pumping stations, as well as oil production mills;
• confined spaces, including wells, boreholes and pipelines;
• wastewater treatment plants.

Modern portable hydrogen sulphide gas analysers are multi-channel devices. Depending on the modification, they can also measure the content of ammonia, methane, carbon monoxide (similar to carbon monoxide gas analysers), carbon, sulphur dioxide and other substances.

Technical specifications

In Kazakhstan, gas analysers for determining the content of hydrogen sulphide are produced by Promanalit company. These are maximally automated devices capable of simultaneously measuring the concentration of a wide range of substances. Hydrogen sulphide gas analysers have the following technical characteristics:

• total number of channels per 1 indication unit - up to 16 (you can choose the configuration of channels relevant for specific conditions of use);
• information liquid crystal display;
• reading range - from 0 to 150 mg/m3;
• measurement parameters of the content of measured components - from 20 to 120 mg/m3;
• relative error of measurements - not more than 20%;
• alarm threshold - 20 and 120 mg/m3.
• temperature mode - from -40 to +45 degrees Celsius.
• interference.

In the basic version the portable hydrogen sulphide gas analyser includes indication blocks, sensors, mating parts to connectors, operation manual and passport. The screen on the front panel of the device promptly displays all the necessary information. Each channel is additionally equipped with LED indication, which is duplicated by sound signals.

All channels have relay and current outputs (0 to 5 mA, 4 to 20 mA), as well as integration with a personal computer and various executive equipment (e.g. emergency ventilation system and equipment start-up blocking). The gas analyser for determination of hydrogen sulphide content can be completed with switching blocks according to the set purposes.

Features of portable gas analysers for determination of hydrogen sulphide content

Portable hydrogen sulphide gas analyser, which can be ordered in the company ‘Promanalit’, is characterised by the following operational advantages:

1. Comprehensive approach - thanks to integration with a computer and modern interfaces, the analyser not only measures substances, but also transmits data to the operator in a timely manner and quickly switches on ventilation when the values are out of the normal range. 
2. Multifunctionality - with the help of this device it is possible to examine the working environment for many parameters at once. Depending on the modification, the portable hydrogen sulphide gas analyser can measure up to 16 gases simultaneously. 
3. Informativeness - the display guarantees high quality of data display under any weather conditions. At the same time, the values are displayed in maximum detail, with channel number and chemical formula.
4. Efficiency - gas analysers for determination of hydrogen sulphide content are characterised by high accuracy and sensitivity. Such devices perform measurements without lag directly in the gas flow.
5. Mobility - portable devices are suitable for use in the tightest spaces, as well as in open areas where there are no power outlets. 
6. High quality - in the typical version of the gas analyser for determining the hydrogen sulphide content is protected from mechanical damage and moisture. In addition, there are modifications with explosion-proof sensors. Such a device is relevant for intensive use at extremely high temperatures.

How to choose the right H₂S gas analyser

In order to choose the right equipment for the task, it is necessary to determine in advance the type of measuring element, as well as to understand which gases and gas mixtures are the priority for measurement. You should also pay attention to the operating temperature - this is relevant if the device will be used at very high or low temperatures.

In the company ‘Promanalit’ you can order a gas analyser to determine the content of oxygen and other substances, produced in accordance with environmental standards of Kazakhstan. If you contact us, you can choose the optimal configuration of the device with a guarantee of quality maintenance. Each device has a warranty period of not less than 12 months.