testo 350 - Analysis Box for exhaust gas analysis systems

Order-Nr.  0632 3510

  • Increased measurement range for unlimited measurements even when gas concentrations are higher

  • Easy-to-change gas sensors and easy access to wearing parts

  • Sealed housing with built-in impact protection for use in harsh conditions

  • Automatic processing of measuring programmes over a longer period

The testo 350 is a rugged, easy-to-use exhaust gas analyser designed to meet the highest demands when it comes to carrying out precise industrial emission measurements and providing proper data administration. The Analysis Box can be operated with up to 6 gas sensors, 5 of which are optional. This allows you to select freely from sensors for CO, NO, NO2, SO2, H2S, CxHy and CO2.

Product Description

Ideal for professional exhaust gas analysis and industrial emission measurements. The testo 350 exhaust gas analyzer is a rugged piece of kit designed to meet the demands of a variety of different measuring and analysis applications. It is also excellently suited for complex data compilation.

The testo 350 exhaust gas analyzer is made up of two separate units

  • The testo 350 Control Unit (separate product) is used to control emission measurements. It has a clearly structured graphic display and is especially easy to use. There are four different applications in the menu to choose from: burner, gas turbine, motors and user-defined applications. The instructions on the display guide you through the measurement and make the steps leading up to the start of the measurement easier. This saves both time and hassle. The Control Unit can also be used to remote control the Analysis Box when it is not positioned at the exhaust gas pipe or measurement site. This is especially advisable when carrying out work on larger systems.
     
  • The testo 350 Analysis Box contains the sensor system and the electronics that are needed to perform emission measurements. The Analysis Box comes standard equipped with an O2 gas sensor. You will, however, need to connect at least one more sensor (max. six) to operate the Box. Optional sensors include gas sensors for CO, CO2, NO, NO2, SO2, H2S and CxHy.

    The increased measuring range allows you to carry out unlimited measurements even when gas concentrations are high. The increased measuring range (thinning) is automatically activated when gas concentrations are unexpectedly high. The measuring range of a selected sensor can be increased by a certain factor. An opening on the underside of the analyzer gives you access to all the relevant service and wearing parts, i.e. pumps and filters, which can easily be cleaned or replaced.  The testo 350 also has numerous diagnosis functions with easy-to-understand readings and information. The exhaust gas analyzer constantly displays the current reading.

    The Analysis Box can be controlled by the Control Unit. It can, however, also be operated directly via USB, Bluetooth® 2.0 or CANCase from a PC or notebook. After the Analysis Box has been programmed, it can carry out measurements independently and save the results. It can also transfer the data directly to the Control Unit.


Conducting industrial emission measurements with the testo 350

The testo 350 exhaust gas analyzer has been specially designed for carrying out industrial emission measurements in the field. In the tab “Applications” you will find out more about:
  • Emission measurements on industrial motors
  • Emission measurements on burners
  • Emission measurements on gas turbines
  • Emission measurements on thermo processes

 

Delivery Scope

testo 350 Analysis Box, O2, incl. differential pressure sensor, type K NiCr-Ni and type S temperature sensor port, Pt10Rh-Pt, Testo data bus port, rechargeable battery, built-in combustion air sensor (NTC), trigger port, data memory, USB interface, carrying strap set for the testo 350 analyzer box and control unit.
Temperature - NTC

Measuring range

-20 to +50 °C

Accuracy

±0.2 °C (-10 to +50 °C)

Resolution

0.1 °C (-20 to +50 °C)

Ambient temperature probe

Temperature - TC Type K (NiCr-Ni)

Measuring range

-200 to +1370 °C

Accuracy

±0.4 °C (-100 to +200 °C)

±1 °C (-200 to -100.1 °C)

±1 °C (200.1 to +1370 °C)

Resolution

0.1 °C (-200 to +1370 °C)

Temperature - TC Type S (Pt10Rh-Pt)

Measuring range

0 to +1760 °C

Accuracy

±1 °C (0 to +1760 °C)

Resolution

0.1 °C (0 to +1760 °C)

Differential Pressure - Piezoresistive

Measuring range

-40 to +40 hPa

-200 to +200 hPa

Accuracy

±1.5 % of mv (-40 to -3 hPa)

±1.5 % of mv (+3 to +40 hPa)

±0.03 hPa (-2.99 to +2.99 hPa)

±1.5 % of mv (-200 to -50 hPa)

±1.5 % of mv (+50 to +200 hPa)

±0.5 hPa (-49.9 to +49.9 hPa)

Resolution

0.01 hPa (-40 to +40 hPa)

0.1 hPa (-200 to +200 hPa)

Absolute Pressure

Measuring range

600 to +1150 hPa

Accuracy

±10 hPa

Resolution

1 hPa

opt. when equipped with IR sensor

Flue gas O₂

Measuring range

0 to +25 Vol.%

Accuracy

±0.8% of fsv (0 to +25 Vol.%)

Resolution

0.01 Vol.% (0 to +25 Vol.%)

Reaction time t₉₀

20 s (t95)

Flue gas CO (with H₂-compensation)

Measuring range

0 to +10000 ppm

Accuracy

±5 % of mv (+200 to +2000 ppm)

±10 % of mv (+2001 to +10000 ppm)

±10 ppm (0 to +199 ppm)

Resolution

1 ppm (0 to +10000 ppm)

Reaction time t₉₀

40 s

H₂ only as an indicator

Flue gas COlow

Measuring range

0 to 500 ppm

Accuracy

±5 % of mv (+40 to +500 ppm)

±2 ppm (0 to +39.9 ppm)

Resolution

0.1 ppm (0 to +500 ppm)

Reaction time t₉₀

40 s

H₂ only as an indicator

Flue gas NO

Measuring range

0 to +4000 ppm

Accuracy

±5 % of mv (+100 to +1999 ppm)

±10 % of mv (+2000 to +4000 ppm)

±5 ppm (0 to +99 ppm)

Resolution

1 ppm (0 to +4000 ppm)

Reaction time t₉₀

30 s

Flue gas Nolow

Measuring range

0 to +300 ppm

Accuracy

±5 % of mv (+40 to +300 ppm)

±2 ppm (0 to +39.9 ppm)

Resolution

±0.1 ppm (0 to +300 ppm)

Reaction time t₉₀

30 s

Flue gas NO₂

Measuring range

0 to +500 ppm

Accuracy

±5 % of mv (+100 to +500 ppm)

±5 ppm (0 to +9.99 ppm)

Resolution

0.1 ppm (0 to +500 ppm)

Reaction time t₉₀

40 s

Flue gas SO₂

Measuring range

0 to +5000 ppm

Accuracy

±5 % of mv (+100 to +2000 ppm)

±10 % of mv (+2001 to +5000 ppm)

±5 ppm (0 to +99 ppm)

Resolution

1 ppm (0 to +5000 ppm)

Reaction time t₉₀

30 s

Flue gas degree of effectivity, Eta (calculated)

Measuring range

0 to +120 %

Resolution

0.1 % (0 to +120 %)

Flue gas loss (calculated)

Measuring range

0 to +99.9 %

Resolution

0.1 % (0 to +99.9 %)

Flue gas dewpoint (calculated)

Measuring range

0 to +99.9 °Ctd

Resolution

0.1 °Ctd (0 to +99.9 °Ctd)

Flue gas CO₂ calculation (calculated from O₂)

Measuring range

0 to CO₂ max

Accuracy

calculated from O₂ ±0.2 Vol.%

Resolution

0.01 Vol.%

Flue gas H₂S

Measuring range

0 to +300 ppm

Accuracy

±5 % of mv (+40 to +300 ppm)

±2 ppm (0 to +39.9 ppm)

Resolution

0.1 ppm (0 to +300 ppm)

Reaction time t₉₀

35 s

Flue gas CO₂ - NDIR

Measuring range

0 to +50 Vol.%

Accuracy

±0.3 Vol.% + 1 % of mv (0 to 25 Vol.%)

±0.5 Vol.% + 1.5 % of mv (25 to 50 Vol.%)

Resolution

0.01 Vol.% (0 to 25 Vol.%)

0.1 Vol.% (> 25 Vol.%)

Reaction time t₉₀

10 s

Velocity / Volume flow

Measuring range

0 to +40 m/s

Resolution

0.1 m/s (0 to +40 m/s)

Methane (CH₄)

Measuring range

100 to 40000 ppm

Accuracy

< 400 ppm (100 to 4000 ppm)

< 10 % of mv (> 4000 ppm)

Resolution

10 ppm

Min. O₂ requirement in flue gas

2 % + (2 x mV methane)

Reaction time t₉₀

< 40 s

Response factor

1

Lower explosion limit (LEL) must be adhered to.
The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.

Propane (C₃H₈)

Measuring range

100 to 21000 ppm

Accuracy

< 400 ppm (100 to 4000 ppm)

< 10 % of mv (> 4000 ppm)

Resolution

10 ppm

Min. O₂ requirement in flue gas

2 % + (5 x mV propane)

Reaction time t₉₀

< 40 s

Response factor

1.5

Lower explosion limit (LEL) must be adhered to.
The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.

Butane (C₄H₁₀)

Measuring range

100 to 18000 ppm

Accuracy

< 400 ppm (100 to 4000 ppm)

< 10 % of mv (> 4000 ppm)

Resolution

10 ppm

Min. O₂ requirement in flue gas

2 % + (6.5 x mV butane)

Reaction time t₉₀

< 40 s

Response factor

2

Lower explosion limit (LEL) must be adhered to.
The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.

General technical data

Dimensions

330 x 128 x 438 mm

Operating temperature

-5 to +45 °C

Housing

ABS

Protection class

IP40

Battery type

lithium batteries

Battery life

5 h

Power supply

AC mains unit 100V to 240V (50 to 60 Hz)

DC electric tension input

11V to 40V

Trigger input

Voltage 5 to 12 Volt (rising or trailing edge) pulse width > 1 sec load: 5 V/max, 5 mA, 12 V/max. 40 mA

Max. humidity load

70 °C dewpoint temperature

Dewpoint calculation

0 °Ctd; 99 °Ctd

Max. dust load

20 g/m³ dust in flue gas

Max. neg. press./flue gas

-300 mbar

Max. pos. press./flue gas

50 mbar

Hose length

16.2 m (corresponds to 5 probe hose extensions)

Pump flow

1 l/min. with through-flow monitoring

Maximum

250,000 readings

Storage temperature

-20 to +50 °C

Weight

4800 g

Service measurement on gas turbines

Gas turbines are subject to flue gas limit values which are to be adhered to during operation and regularly checked depending on the size of the system. After commissioning and maintenance work, the system's emission values are checked for adherence to limit values and also the manufacturer's specifications, and documented if necessary.

Due to the low NO concentrations, emission measurements during inspection and adjustment work on LowNOx gas turbines need to be extremely accurate. The portable flue gas analyzer testo 350 featuring the combination of NO2 sensor and special NOlow sensor with a resolution of 0.1 ppm enables precisely these requirements to be met. In addition, the integrated gas preparation and special flue gas probe with patented special hose provide protection against NO2 absorption and allow measured values to be compared, irrespective of date and ambient conditions.

Service measurement on industrial engines

The flue (exhaust) gas analyzer testo 350 is an important tool for adjusting a gas or diesel engine to optimum effect. The testo 350 is used, for example, during commissioning, at regular maintenance intervals, or for troubleshooting unstable operational processes. Exhaust gas measurement is necessary to adjust the engine to optimum operating parameters while complying with the limit value regulations in force - this often entails measurements being taken over several hours. In particular, the high and fluctuating proportion of NO2 in the engine exhaust gas makes the separate measurement of NO and NO2 necessary to provide a highly accurate indication of the real NOx value of the engine. The integrated gas preparation and the special exhaust gas probe for industrial engines with patented special hose provide protection against NO2 and SO2 absorption and allow measured values to be compared, irrespective of date and ambient conditions.

Service measurement on after treatment systems

Restrictive limit values necessitate the use of a portable flue/exhaust gas analyzer to reliably determine the exhaust gas parameters in front of and after the after treatment system. In addition to the regular inspections for mechanical damage and contamination, the flue gas measurement provides information about the efficiency and functional reliability of a system. The bus function of the flue gas analyzer testo 350 allows flue/exhaust gas to be measured simultaneously in front of and after an exhaust after treatment system; this enables fast and easy assessment of the system. Any system modifications can be obtained from the measurement protocol.

Analysis of the gas atmosphere (thermal processes)

The flue gas analysis is used for thermal process monitoring in process combustion systems, such as in continuous furnaces for the glass, ceramics and construction material sector, or in steel melting and hardening furnaces, etc. In processes of this kind, substances may pass from the product being processed into the flue gas, increasing the usual emissions produced by the combustion system;

vice versa, pollutants may pass from the gas and become part of the product being processed. The flue gas analyzer testo 350 can be used to pursue two main goals: monitoring of the process-related gas atmosphere to ensure the optimum quality of the processed products. The gas analysis provides information for process-related measures, such as the design of the furnace interior, flame control, fired product and furnace temperature, or the combustion air supply. At the same time, the gas analysis contributes to optimum operation of the system in terms of operating costs and safety.

Service measurement on industrial burners

For whichever purpose combustion systems are used, whether for heating, generating electrical power, steam or hot water, for the production or surface treatment of certain materials, or to incinerate waste and scrap materials, the best possible way of managing combustion and incineration definitely includes the right knowledge about the compositions of fuels and combustion air, and their relationship to one another. Even how they are combined is crucial. Mobile measuring technology allows all relevant gases to be analyzed and optimum combustion processes therefore to be achieved.

The purpose of using a portable flue gas analyzer is to test the environmentally sound operation of combustion systems and optimum utilisation of the system. This means that a combustion system can be adjusted to its optimum working range to enable it to meet or come within stipulated emission limit values, while achieving a maximum level of efficiency in terms of combustion. The accurate flue gas analyzer testo 350, suited to tough practical conditions, is not only used for commissioning purposes, but also for repeat gas analyses during operation.

Official emissions measurement (compliance testing)

In most countries, operation of all types of industrial plants (e.g. large power stations, steelworks. cement works, glass works, and chemical plants), and local authority facilities, right through to small production sites is subject to strict regulations governing exhaust gas emissions into the atmosphere. Suitable measures are be taken to ensure and regularly verify that the components defined as pollutants do not exceed certain limit values in the flue gas.

The flue gas analyzer testo 350 can be used to carry out a preliminary analysis before an official emissions reading, or, depending on the country and directive, the actual official compliance testing.

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