Host Device Transmitters for Interchangeable Sensors

Indigo 200 Series Transmitters accommodate an array of
smart sensors.
Image courtesy Vaisala

Our previous post was about Vaisala's new interchangeable humidity sensors in their Indigo line. The Indigo sensors, and other smart probes, are designed to work with the Indigo series transmitters to provide top flight performance in process measurement and control applications.

Transmitters enable plug-and-play setup with the smart sensors. Output options include analog, relay and Modbus. The browser based wireless interface allows configuration and viewing access to the transmitter. The LCD color display enables easy viewing on location.

Share your process measurement challenges with process instrumentation experts, leveraging your own process knowledge and experience with their product application expertise to develop the best solution.

Indigo 200 Series Transmitters from Alliance Technical Sales, Inc.

Interchangeable Humidity Probes Open Up Application Possibilities

The Vaisala Indigo series of humidity measurement probes
encompasses variants for a wide range of applications.
Image courtesy Vaisala

The Indigo family of smart sensors and transmitters, from Vaisala, has been expanded with some newly released humidity probes. The five new probes can be used with an Indigo host device or another using Modbus protocol. Previously available sensors measured concentrations of gaseous carbon dioxide and hydrogen peroxide. The new offering expands the Indigo functionality into humidity measurement, a mainstay of Vaisala for many years. Humidity can now be measured in:

• Pressurized or high pressure environments, up to 100 bars, with two probe offerings covering differing pressure ranges
• High temperature ovens and similar applications
• High humidity applications where probe heating is required

There is also a new version available for temperature measurement. 

The Indigo family of sensors and host devices are interchangeable, and all can interface with Vaisala's Insight PC software. More information is available from the process measurement specialists at Alliance Technical Sales. Share your process measurement challenges with experts, leveraging your own knowledge and experience with their product application expertise to develop the best solutions.

Humidity Measurement - Technical Details

Industrial humidity measurement instrument
Courtesy Vaisala

Regardless of what industry you may be operating within, humidity, the moisture content of the air surrounding your work, has some degree of impact. Though that impact may be small enough to currently be ignored, building a basic understanding of the relationship of moisture and dry air, how humidity is measured, and how it can impact your operations will make you a more effective and valuable operator of whatever your process might be.

Vaisala, a leader in humidity measurement, has produced a resource in the form of an eBook that breaks down into understandable units various aspects of humidity measurement and the impact of humidity on industrial applications. The eBook contains a basic level of detail, plus provides links to more technical in-depth source material.

Everyone should find something of value in the eBook. Share your humidity questions, concerns, and challenges with product application specialists for assistance and cooperation in developing effective solutions.

Humidity Measurement Handbook for Manufacturing from Alliance Technical Sales, Inc.

Combustion Control in Gas Turbines

Proper inlet air control can boost gas turbine efficiency

Gas turbines continue to enjoy an expansion in their use throughout the world. The benefits of using gas as a fuel are well recognized. Achieving high levels of fuel efficiency will be a goal of every operator, so understanding the nature of combustion and fuels can be useful in attaining optimum operating conditions.

Vaisala, a globally recognized leader in the measurement of temperature and humidity, was authored a white paper application note that explains how the temperature and humidity of inlet air can contribute to combustion efficiency, as well as providing recommendations for measuring these parameters in gas turbine applications.

The white paper is included below. Share your process measurement requirements and challenges with application experts. Combine your process knowledge with their product application expertise to deliver effective solutions.

Optimizing gas turbine performance with precise humidity measurements from Alliance Technical Sales, Inc.

Temperature and Humidity Transmitters for Industrial Applications

Vaisala enjoys global recognition as a premiere provider of best-in-class humidity and temperature transmitters for industrial process measurement. The video provided here gives an excellent overview of the company's HMT 330 Series with all of its variants for special applications.

Share your temperature and humidity measurement challenges with product specialists, combining your process knowledge with their product application expertise to develop effective solutions.

Humidity and Temperature Transmitters for Demanding Humidity Measurement

HMT330 Series Humidity and Temperature Transmitters
Courtesy Vaisala

Humidity, the amount of water vapor in the atmosphere or a gas, can be an important measurable attribute of an industrial process. Many are aware of the measurement of relative humidity in HVAC applications and its impact on human comfort in occupied spaces, but the measurement of water vapor in air can be a required measuring point in many other processes that pose far greater challenge.

In addition to common wall or duct mounting applications, where the instrument is easily inserted or placed into the environment to be measured, there are applications that call for special adaptations to the instrument or sensing probe.

• High pressure
• Vacuum
• High temperature
• High humidity
• Pressurized pipelines
• Presence of chemical contaminants

Meeting the full range of industrial process control operations requires stable measurements and the choice of multiple configurations and options to customize the instrument to the process demands. Here are some features worth considering.

• Multiple variants to match the basic process requirement
• Full 0 to 100% humidity measurement range up to +180°C (+356°F)
• PT 100 RTD for accurate temperature measurement
• Pressure tolerance up to 100 bar
• Superior sensor accuracy and stability
• Graphic display and keypad for local operation
• Multilingual user interface
• Good chemical tolerance
• Corrosion resistant housing
• Delivered with multi-point NIST traceable calibration certificate
• Analog outputs, RS232/485, WLAN/LAN
• MODBUS protocol support (RTU/TCP)
• Long term manufacturer warranty

While not all processes may require, or benefit from, the inclusion of all the listed features and capabilities, reviewing what is available and considering which features may provide better operability in your process can be beneficial. I have included a data sheet below that illustrates the HMT330 Series of humidity and temperature transmitters from Vaisala. Share your humidity measurement challenges with a product specialist. Combining your process knowledge with their product application expertise will produce solid solutions.

Vaisala HMT330 Series IndustrialTemperature and Humidity Transmitters from Alliance Technical Sales, Inc.