Testo 816-1 -Sound level measurement with integrated data storage

The testo 816-1 sound level meter is ideal for measuring sound level at workplaces, industrial and production halls, and public places.  The measuring instrument can be switched from Slow (1 sec.) to Fast (125 ms) with the touch of a button. Additionally, it is also facilitated to switch between the frequency weighting characteristic curves A (corresponds to the sound pressure sensitivity of the human ear )and curve C (for evaluating low-frequency components of a noise) and vice versa. ation of testo 816-1. The integrated data store allows the storage of over 30000 measurement values in the instrument, these can be administered using the software included in delivery. In addition to this, the software allows online measurements over a longerperiod to be carried out. With the optional sound calibrator and the adjustment accessory included with it, the testo 816-1 can be re-calibrated on site.

Features-

•          Backlit display

•          Bar graph display

•          Frequency weighting A and C

•          Sound level measurement acc. to IEC 61672-1 class 2 and ANSI S1.4 Type 2

•          Integrated data storage for up to 31000 measurement values

•          can be switched from Slow (1 sec.) to Fast (125 ms)

•          Software for data management and long term measurement

•          AC and DC output for the connection of other instruments

•          On site calibration with the optional sound calibrator

Making your utility and maintenance tasks easier with sound level and RPM measuring instruments

Sound level measurement:

You often need an instrument that can be used for monitoring sound level measurements in the areas of air conditioning or heating, on combustion plants or at workplaces. Machine or discotheque noise can also be evaluated quickly and precisely with testo sound level measuring instrument testo 815 or testo 816. This dB meter is the ideal instrument for the evaluation of sound level in everyday work. Using the Fast/slow button, the measurement time can be set from 1 s to 125 ms, in order to better evaluate the noise source. The frequency analysis can also be switched from characteristic curve A to C. The characteristic curve A corresponds to the sound pressure perception of the human ear, whereas characteristic curve C can also evaluate the low-frequency components of a sound. With the help of the optional calibrator, the measuring instrument can be recalibrated directly on site with the screwdriver provided. The wind protection cap included in delivery ensures correct measurement results when measuring outdoors and if required can protect the microphone from dirt and dust. The testo 816 also has an AC and DC output. Via the AC output, recorders or amplifiers can be connected directly to the instrument, and via the DC output, graphical recorders or data loggers can be used easily and directly on site.

RPM measurement:

For non-contact RPM measurement, with the testo 465, you can measure rpm easily without contact using only one hand. The measuring instrument is thus suitable for measurements on rotating parts such as ventilators and shafts. Simply attach a reflective marker (optional) to the measurement object, point the visible red beam of light at the reflective marker, and measure.

Whereas for non contact and mechanical RPM measurement, the rpm measuring instrument testo 470, which can be operated with one hand, offers an optimum combination of optical and mechanical rpm measurement. By simply attaching an adapter for a probe tip or a speed disc, the optical measurement becomes a mechanical one. This allows speeds and lengths to be measured additionally.
The high light-intensity hand stroboscope testo 476 is used when it is necessary to make fast-moving objects appear in slow motion. The hand stroboscope-Pocket Strobe measures and tests rotation and vibration movements. It allows the measurement of very small objects, or in places which are not directly accessible – and it does this without interrupting the production process! The testo 476 is thus optimally suitable for rpm measurements and for the inspection of components moving at high frequencies. The testo 477 LED hand stroboscope too is used for high revolutions. 

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NOx Monitoring in Gas Turbines

PROCESS:  

•        A gas turbine is basically an engine.

First, the compressor compresses air and converts it to high pressure air.

Then, combustion takes place, and high pressure hot gas is produced.

In the last stage, energy is extracted from high pressure hot gases, and for instance a rotor is driven at high speeds.

 

•        Control of combustion temperature plays an important role in running a gas turbine efficiently. If the combustion temperature increases, the NOx levels also increase, while the CO goes down. Reverse happens when the combustion temperature is brought down. A turbine therefore, has to be run at optimum temperature, to keep a control over NOx and CO levels.  Analysis Of Gas Turbine Systems

•        A wear and tear of turbine parts is also indicated by an increase in NOx levels. Hence, it is very important to monitor exhaust gases coming out of a turbine.

 

MEASUREMENT:  O2, CO, and NOx are measured at the Gas Turbine exhaust.

SOLUTION: The testo340 with sensors for CO, NO, NO2 is the perfect solution.

Efficient measurement of Indoor Air Quality

The wide range of electronic instruments for the measurement of Indoor Air Quality available on the market reflects the many requirements in this area. Numerous parameters such as temperature, humidity, pressure or CO2 must be recorded, analyzed and documented. The professional groups carrying out measurements in the field of air conditioning and ventilation are equally varied: from contractors to plumbing, heating and air conditioning experts or plant constructors, up to expert appraisers or assessors. However, these users often apply only measuring instruments which are able to record one or two parameters belonging to their main activities. Yet especially those instruments which can measure almost all IAQ parameters support the efficient processing and management of the corresponding data. They would considerably facilitate work for all professional groups in air conditioning and ventilation technology.

The application

Which is the right instrument? A plumbing, heating and air conditioning expert uses an infrared temperature measurement to check insulation work on a heating system. Complex documentation is not necessary, so that as a rule, an entry instrument is sufficient. However, as soon as commissioning, installation, inspection or maintenance of ventilation and air conditioning systems (VAC) is necessary, more complex measurements are often required. For example, if there is a lack of well-being in open-plan offices, it becomes necessary to analyze draughts, uncomfortable temperatures or fatigue due to high CO2 concentrations. Such measurements can take several hours or days, and cannot be be managed with an entry instrument. It is recommended in such cases that professional measurement technology is used, which is able not only to measure many different parameters, but also to analyze and correspondingly document them for the customer.

The solution Pro measurement technology from Testo

Modern measuring instruments such as the VAC measuring instrument testo 480 have a high level of convenience for the user, as well as efficient analysis, processing and management of large quantities of data using PC software. They support the customer with integrated measurement programs which allow fast and standardized measurement. What makes them special is the large selection of digital probes which provide considerable advantages. On the one hand they appreciably extend the area of activity of the user. There is hardly an IAQ measurement which cannot be conducted. On the other hand, the probes produce a digital signal which is transferred to the measuring instrument completely without any loss of information, and free of error. The technical measurement intelligence is thus in the probe itself. This means it can be calibrated even without using a portable instrument, avoiding downtime costs and substantially simplifying the entire calibration process.

Benefits for the customer A win-win situation testo 480 with its probes fulfils numerous standards such as grid measurement of a VAC system according to EN 12599. The technician is prepared for everything, works quickly, obtains error-free measurement results and can present them to his customer directly on site. The customer can be certain that the technician conducts all relevant measurements and can adjust the VAC system according to the standards. And not only that, people have a greater sense of well-being, and it has been proven that they perform better at the workplace when the indoor climate is right. In addition to this, an efficiently adjusted system can avoid high energy costs. That saves the customer money.

COMBUSTION IN A BOILER FURNACE

PROCESS:  a mixture of fuel and air are burned inside the combustion zone, in a boiler or a furnace. It is not easy to properly mix the fuel and air, inside the chamber. So to ensure that every fuel molecule will find sufficient oxygen to combine with, and form carbon dioxide, an excess or extra of air is admitted along with the fuel.

This excess air has a simple objective, it has to make itself available for the fuel molecules, to combine. It does not take part in the reaction. After every single fuel molecule is burned, whatever excess air was given in the beginning, comes out thru the stack, along with the other flue gases.

The oxygen concentration in this air is measured, and it tells us whether the combustion is complete and has been efficient. Less than adequate oxygen, measured in the stack,  tells us that the fuel  doesn’t get sufficient oxygen, and so some of the fuel is left unburnt, and maybe CO is also produced. Combustion Analysis System.

More than adequate oxygen tells us that whatever heat is produced in the chamber, is taken away by the extra air that is given along with the fuel. This heat loss also means inefficient combustion in a way.

MEASUREMENT:  for this application , it is always O2, CO, and CO2 that are monitored. O2 tells us the type of combustion. The CO levels tell us how much fine tuning is required for the air to fuel ratio.

SOLUTION: for this application, for all small boilers, testo310, 320 and 330-LL can be offered. And for large power plants, and bigger boilers and furnaces, 340, and 350 are the right solutions. Ofcourse with O2 and CO sensor, and CO2 is always calculated.