The total mercury analyzer measuring system HM-1400 TRX

Monitoring mercury content in flue gases is becoming increasingly important. In the USA new regulations will come into effect in 2016, which could become a model for the entire EU. The total mercury analyzer in our portfolio was conceived as a standardized solution for continuous mercury monitoring: sample taking, sample preparation, and gas analysis that is automated and reliable.

Continuous mercury emission measuring

The total mercury analyzer system HM-1400 TRX

HM-1400 TRX is a measuring system for fully-automatic and continuous mercury analysis in flue gas stacks gas by measuring mercury vapor (without wet chemistry). The system uses the extractive measuring principle and includes sampling probe and sampling line. The HM-1400 TRX monitors not only the performance of the mercury separators by measuring the total mercury concentration, but also reports and registers (also online) any violation of the high limits. As a result it is often possible to intervene directly in the process of the plant to be monitored and thus ensure reliable compliance with the specified limit values.

Technical Data

Measuring principle
Determination of the Hg° concentration of the extracted and conditioned sample gas by help of a dual beam UV CVAAS photometer. Ionic Hg-compounds are converted to Hg°inside a thermal converter.
Concentration of total Hg in sample gas, indicated as Hg°(elemental)in μg/Nm3
Measuring ranges

0... 45/0 ... 75 to 0 ... 500 μg/Nm3

Benefits at a glance

  • Maintenance-free (6 months) dry reactor
  • Conversion of the sample gas into mercury vapor by a combination of thermal and dry chemical treatment
  • Continuous vapor measurement in a photometer
  • Low cross sensitivities
  • No fail-safe instrument air required
  • Larger measuring ranges with dilution device (option)
  • Integrated system to generate reference gas (option)
Get an overview of our portfolio, everything about process analytics and more

Setting standards with measurement technology

Downloads, support, and services

Information at a glance

Whether you are looking for contacts at your location, have technical questions, or need spare parts, we have clearly summarized the essential additional information for you below.

The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support.

Service offers

To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

Service catalog

As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

Well trained for excellent handling

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries.

Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.


Here for you to answer all your questions

We are represented worldwide with production facilities and system integration centers. Each center, whether in Houston, Singapore, or Karlsruhe, has its own sales, engineering and assembly teams, service and logistics hotlines and well-equipped training centers. In addition, our employees have a global presence and are familiar with all relevant local requirements, guidelines, and standards.

Your direct line to Siemens

Contact your regional partner