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Air Monitoring
New Inline Infrared Temperature Sensors Measure Flame-Heated Objects and Combustible Gases up to 1,450°C
A new range of non-contact, infrared temperature sensors is now available that accurately measures the temperature of flame-heated workpieces inside industrial furnaces and ovens, as well as CO2 (carbon dioxide) and CO (carbon monoxide) flame gases in different types of combustion processes. Micro-Epsilon’s new thermoMETER CTLaserCOMBUSTION is a range of non-contact, inline (fixed) infrared sensors that can measure target temperatures through flames and temperatures of combustible gases from +200°C up to +1,450°C. The thermoMETER CTLaserCOMBUSTION series includes 3 models: the C2, C4 and C6.
The C2, with detector wavelength of 4.24µm, is designed to measure the temperature of flame gases that contain CO2. Typical applications include flame gases in the burning of waste products or garbage, combustion chambers and processes inside chemical reactors.
The C4 is for measuring the temperature of workpieces or objects through flames. The detector wavelength of 3.9µm allows the sensor to ‘see through’ the flame, as at this wavelength the combustion gases are transmissive to the detector. In this way, users can safely monitor the temperature of the workpiece inside a chemical reactor, industrial oven or furnace, or to observe the brick temperature in combustion chambers.
The C6 model, with detector wavelength of 4.64µm, is for measuring the temperature of flame gases that contain carbon monoxide (CO). Application examples include chemical reactors, burning of waste and combustion chambers.
For all temperature measurements between 200°C and 1,450°C, the 3 sensor models measure at short wavelengths (3.9µm-4.64µm), which minimises temperature measurement errors on surfaces with either low or unknown emissivity. The sensors have a precision double laser sighting system, combined with an optical resolution of 45:1 and with selectable close focus optics, a minimum spot size of 1.6mm, all of which offers an attractive price/performance ratio.
The double laser sighting system has two laser beams, which precisely follow the infrared optical path, marking at any distance the real spot size. Most common pyrometers use a central laser beam, through-lens sighting system or video sighting, which simply mark the centre and estimate the spot size. Fast signal processing and quantum detector enable fast response times of just 10ms.
The thermoMETER CTLaserCOMBUSTION is protected to IP65 and can be used in ambient temperatures from -20°C to +85°C without any cooling required. The sensors have an automatic laser switch off at 50°C. A range of accessories and optional extras are available, which help to protect the sensor in harsh operating environments. These include Furnace Wall Mounts, air and water cooling jackets and sighting tubes. The sensors are offered with analogue outputs (0-10V, 4-20mA), K or J type thermocouples outputs as standard, with a range of integrated digital communications interfaces, including Profibus DP, CANopen, USB, RS232, RS485 and Ethernet available as options.
Reader Reply Card No. 135
New Portable FTIR Gas Analyser Detects Almost Any Gas
+44 (0) 1453 733200
sales@et.co.uk
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The new instrument, the DX4040, is lighter, easier to use and more flexible than its predecessor. However, Quantitech's Dr Andrew Hobson says: "The most important development lies in the ability of the device to identify unknown gases in the field (at the touch of one button) when using a new version of the unit's Calcmet™ software on a Windows tablet pc."
Users of the DX4040's predecessor will be pleased to learn that the unknown gas identification capability is retrospectively applicable to existing DX4030 analysers when using the new software and tablet PC.
Whilst the new DX4040 is able to identify literally thousands of different gases; for those users investigating known species the unit can be used with a handheld Bluetooth PDA incorporating a 3G modem, camera and GPS so that time and location are assigned to each analysis. Dr Hobson says: "The PDA is particularly popular because it enables the simultaneous display in almost real-time of up to 25 gases."
As a consequence of the enormous number of gases that the DX4040 is able to measure, the device is suitable for a wide variety of applications, including chemical spill, security, forensic investigation, occupational health, anaesthetic gases, research and many others.
Reader Reply Card No. 137
Instrumentation specialist Quantitech has launched a new version of the Gasmet portable multiparameter FTIR gas analyser which has brought laboratory grade gas analysis into the field.
New Sensor Additions for Integrated Weather Stations
Specialized Sensing Ltd announces the WS-401 and WS-601, the latest senor additions to the WS family of compact, integrated weather stations from Lufft GmbH.
The WS-401 and WS-601 combines the all-in-one integrated features of the WS family with a classic tipping bucket rain gauge to provide a precise measurement of rainfall quantity. In addition to precipitation measurements the WS-401 measures air temperature, air pressure, relative humidity and dew point while the WS-601 includes all the measurement parameters of the WS-401 plus an ultrasonic anemometer for wind speed and direction measurements. Their compact, innovative design is ideal for projects where visual impact and low maintenance are a consideration and for applications where flexibility, ease of integration and low power consumption are a requirement.
Using a digital RS485 interface the WS range offers a variety of open communication protocols including ASCII, UMB, MODBUS, SDI-12 and analogue in combination with a DAC. From environmental monitoring stations to building automation projects, the WS family of integrated weather stations offer an innovative climate sensing solution for every project.
Reader Reply Card No. 138 Reader Reply Card No. 139
IET November / December 2011
www.envirotech-online.com
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