testo 320

Order-Nr.  0563 3220 78

Product Description

Are you looking for a multi-function instrument for efficient flue gas analysis? Which confidently solves every task on a heating system? And is still convenient to use? The new testo 320 fulfils all of these requirements, because that is exactly what it was developed for. The testo 320 has a high-resolution colour display which presents the measurement results graphically. It provides simple, self-explanatory measurement menus. The testo 320 is very robust, ergonomic, and at the same time aesthetically designed. It has two sensors for O2 and CO as well as a temperature probe integrated into the flue gas probe for the direct measurement of temperature, O2 and CO. From these data, the instrument calculates all relevant flue gas measurement parameters such as CO2 value, degree of effectivity and flue gas loss. Direct draught or pressure measurements are additionally possible. Using the fine pressure probe, the flue draught or gas pressure values can optionally be measured parallel to the flue gas measurement.
- TÜV-tested according to EN 50379, Parts 1-3.

Applications:
- Flue gas measurement
- Draught measurement
- Gas flow and static gas pressure
- Gas leak detection
- Ambient CO measurement
- Differential temperature measurement

 

Measuring the flue gas parameters of the burner (CO, O2, and temperature, etc.)

The flue gas measurement for a heating system helps to establish the pollutants released with the flue gas (e.g. carbon monoxide CO or carbon dioxide CO2) and the heating energy lost with the warm flue gas. In some countries, flue gas measurement is a legal requirement. It primarily has two objectives:

 

  • Ensuring the atmosphere is contaminated as little as possible by pollutants; and
  • energy is used as efficiently as possible.

 

Stipulated pollutant quantities per flue gas volume and energy losses must never be exceeded. Measurement in terms of results required by law takes place during standard operation (every performance primarily using the appliance). Using a Lambda probe (single hole or multi-hole probe), the measurement is taken at the centre of flow in the connecting pipe (in the centre of the pipe cross-section, not at the edge) between the boiler and chimney/flue. The measured values are recorded by the flue gas analyzer and can be logged either for print out or transfer to a PC at a later stage.

Measurement is taken by the installer at commissioning, and if necessary four weeks later by the flue gas inspector/chimney sweep, and then at regular intervals by the authorised service engineer.

Measuring pressure on burners (nozzle pressure, gas flow pressure, etc.)

Standard readings taken during services of domestic heating systems include checking the gas pressure on the burners. This involves measuring the gas flow pressure and gas resting pressure. The flow pressure, also called supplied pressure, refers to the gas pressure of the flowing gas and resting pressure of the static gas. If the flow pressure for gas boilers is slightly outside the 18 to 25 mbar range, adjustments must not be made and the boiler must not be put into operation. If put into operation nonetheless, the burner will not be able to function properly, and explosions will occur when setting the flame and ultimately malfunctions; the burner will therefore fail and the heating system will shut down.

Measuring temperatures on radiators

When measuring the temperature on radiators, the flow and return temperatures are recorded in particular and assessed by the tradesman. The flow temperature is defined as the temperature of a thermal transfer medium (e.g. water) that the system is supplied with. The temperature of the medium flowing out of the system is accordingly called the return temperature. To prevent losses within the heat distribution system and achieve a better level of efficiency in modern, heating technology, spot recording of flow and return temperatures is necessary at certain radiator pipes or screw fittings. Implementation of relevant measures ultimately leads to hydraulic adjustment on the basis of knowledge about the flow and return temperatures. This defines a procedure with which every radiator or heating circuit of a flat radiator within a heating system is supplied at a set flow temperature with the precise amount of heat needed to achieve the ambient temperature required for the individual rooms. Flawed operating conditions will result in considerable excess consumption of electricity and heating energy.

Product Brochures

Manuals

Software

  • Download testo 320 firmware  (V1.11, BIN, 13.053 KB) It is partially not possible to execute a firmware update with Windows 8.1 / Windows 10. This can be solved by installing a new Bootloader once.
    A description and all necessary files can be found under Update-Kit / Bootloader

  • Software EasyHeat for testo 300, 312-4, 320, 324, 330, 380  (v2.12 SP3, EXE, 101.938 KB) If you already have the testo EasyHeat software installed, your version will be updated. The update is possible with every version of the testo EasyHeat. This version can also be used as a demo version for  costumers who don't have installed the testo easyheat software at the moment. It will void after 30-days, but can be activated with a serial code at every time.

  • Instruction manual EasyHeat software  (PDF, 3.053 KB)

  • Testo ZIV driver ZIV 2000 for testo 320 and testo 330  (ZIP, 8.8 MB) Testo ZIV driver in the 2000 version. The Testo ZIV driver is used to connect the testo 320 and testo 330 measuring instruments to an application program (sweeping district administration program) according to the interface Version 2.0 defined by the Zentralverband des Schornsteinfegerhandwerks (Central Association of Chimney Sweeps, ZIV). Please check with the manufacturer of your application program as to whether this interface is supported. If Microsoft .NET Framework 4.0 has not been installed on the computer, it must be downloaded from the Microsoft website and installed on the system.

  • Testo ZIV driver for testo 300, testo 320 and testo 330   (v2.2 SP2, EXE, 64.193 KB) The Testo ZIV driver is used to connect the testo 300, testo 320 and testo 330 measuring instruments to an application program (sweeping district administration program) according to the interface defined by the Zentralverband des Schornsteinfegerhandwerks (ZIV, Central Association of Chimney Sweeps) in version 1.0 of 01. August 2012 as well as in version 2.0 of 13. February 2017. Please check with the manufacturer of your application program as to whether this interface is supported.