testo 312-4 - Differenciál-nyomásmérő 200 hPa-ig

Rendelési szám  0632 0327

  • Tightness testing and load testing on gas pipes

  • Serviceability testing with air by pressure drop on gas pipes

  • Pressure testing on drinking water and waste water pipes using air

  • Automatic recording of measuring values over several hours

Differenciál nyomásmérő műszer 200 hPa-ig, DVGW által bevizsgálva, elemmel és gyári műbizonylattal

Termékleírás

A testo 312-4 digitális differenciál nyomásmérő műszerrel finom nyomásmérések végezhetők a hálózati gáznyomás, a gázáramlás során fellépő nyomás megállapítása céljából, valamint a gáztüzelő berendezések égő nyomásának gyors és megbízható beállítására.
• Rendkívül biztonságos a nagy önvízzáró tulajdonságú C-flex tömlők alkalmazása révén (nincs szivárgás, hosszú ideig tartó mérések esetén sem!)
• Gázvezetékeken végzett elő- és fővizsgálatok valamint szivárgásmérések törvényi előírásoknak megfelelően
• Felhasználóbarát menüvezetés
• Adott időtartam alatt (pl. 24 óra) mért értékek feljegyzése
• Adatátvitel és kiértékelés PC szoftver segítségével, beleértve a grafikus ábrázolást is

 

Szállítási kiszerelés

testo 312- 4 differenciál nyomásmérő műszer 200 hPa-ig, DVGW által bevizsgálva, elemmel és gyári műbizonylattal.
K típusú (NiCr-Ni)

Méréstartomány

Pontosságra vonatkozó adatok kizárólag a műszerre vonatkoznak, a csatlakoztatott érzékelőkre nem

Pontosság

±0,4 °C (-100 ... +200 °C)*

±1 °C (Maradék tartomány)*

Felbontás

0,01 °C

*Pontosságra vonatkozó adatok kizárólag a műszerre vonatkoznak, a csatlakoztatott érzékelőkre nem

Differenciál nyomás (szenzor a műszerben)

Méréstartomány

0 ... 200 hPa

Pontosság

±0,03 hPa (0 ... +3 hPa)

±1,5 a mért érték (+3,1 ... +40 hPa)

±2 hPa vagy ±1 végérték (41 ... +200 hPa)

Felbontás

0,01 hPa

Differenciál nyomás (külső szenzor)

Méréstartomány

0 ... 25 bar

Pontosság

±0,6 végérték (0 ... 10 bar)

±0,6 végérték (>10 ... 25 bar)

Felbontás

10 hPa

Általános műszaki adatok

Méretek

219 x 68 x 50 mm

Nyomtató interfész

Infravörös interface

Adatátvitel

RS 232

PC szoftver

Easyheat

Memória

25 000 mért érték

Súly

600 g

Kiegészítők

RS232 vezeték USB 2.0 adapterrel

Rendelési szám: 0409 0178

Csatlakozókábel

Rendelési szám: 0430 0143

9 V-os akkumulátor a mérőműszerhez

Rendelési szám: 0515 0025

TopSafe (elnyűhetetlen védőtok)

Rendelési szám: 0516 0446

9 V-os akkumulátor töltő

Rendelési szám: 0554 0025

testo jegyzőkönyv nyomtató

Rendelési szám: 0554 0549

75 600 Ft
96 012 Ft ÁFA-val
Tartalék hőpapír nyomtatóhoz (6 tekercs)

Rendelési szám: 0554 0568

28 350 Ft
36 004 Ft ÁFA-val
Elzáró szelep csővezeték lezárásához

Rendelési szám: 0554 3162

Nagynyomású vizsgálódugó 3/8" és 3/4"

Rendelési szám: 0554 3163

Nagynyomású vizsgálódugó 1/2" és 1"

Rendelési szám: 0554 3164

Tömlőkészlet testo 312-4 mérőműszerhez

Rendelési szám: 0554 3172

Pumpa a próbanyomás létrehozásához

Rendelési szám: 0554 3157

Pressure measurements on burners

Checking the gas pressure on burners is one of the standard measurements during services of domestic heating systems. This involves measuring the gas flow pressure and gas resting pressure of the system. 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 appliance must not be put into operation. If the burner is nevertheless put into operation, it will not be able to function properly and, when the flame is generated, small explosions will occur and ultimately malfunctions; the burner will therefore shut down and the heating system will fail.

Pressure tests on gas pipes (load test)

The technical regulation for gas installations (in short: TRGI) is a binding and at the same time important regulation for skilled tradespeople. The TRGI governs how gas installations are to be planned, designed, serviced and maintained. This applies to all gas installations. This regulation is taken care of by the German Association for Gas and Water (DVGW). The TRGI 2008 is the current version. Amongst other things, this states that gas pipes are to be tested according to the construction phase (basic shell, completion and repairs). Load testing is one of the checks that plays a role in the application stated here: in this process, the material of a gas pipe is tested for stability and the connections for service life; this takes place prior to plastering over or concealment of the gas pipes. During load testing, the newly installed pipe, without fittings or gas appliances, is put under 1 bar pressure. The testing medium is air or inert gas. There must be no pressure drop detected during the test, which lasts at least 10 minutes.

Pressure tests on water pipes

According to the legal regulations of DIN EN 806-4, DIN 1988-7 and DIN 1610, drinking and waste water pipes are to be tested for leaks before being put into service by means of a pressure test with air, inert gas or water; they are also to undergo load testing with air or inert gas. However, for reasons of hygiene, it is best if the pipes remain dry until shortly before commissioning and do not undergo a leak test using water. A pressure test with air is also recommended to prevent metallic materials from corroding. The pressure test is split into two pressure-related parts where test pressure and time depend on the objective (load or leak). Leaks can usually be heard very quickly. If it is difficult to locate the leaks, the usual auxiliary tools and materials for gas pipes are used (spraying or brushing on foaming solutions).

Pressure tests on gas pipes (leak, load test)

The technical regulation for gas installations (in short: TRGI) is a binding and at the same time important regulation for skilled tradespeople. The TRGI governs how gas installations are to be planned, designed, serviced and maintained. This applies to all gas installations. This regulation is taken care of by the German Association for Gas and Water (DVGW). The TRGI 2008 is the current version. Amongst other things, this states that gas pipes are to be tested according to the construction phase (basic shell, completion and repairs). The following checks in particular play a role in the application stated here:

Load test
In this process, the material is tested for stability and the connections for service life; this takes place prior to plastering over or concealment of the gas pipes. During load testing, the newly installed pipe, without fittings or gas appliances, is subjected to 1 bar pressure. The testing medium is air or inert gas. There must be no pressure drop detected during the test, which lasts at least 10 minutes.

Leak test
This test is for checking the pipe for leaks, with fittings and without gas appliances. The measuring instrument must not register any drop in pressure during the minimum 10-minute testing period (depending on the system volume); the test pressure is 150 mbar (previously 110 mbar).

Temperature measurements on radiators

When measuring temperatures on radiators, the flow and return temperature are recorded in particular and assessed by the tradespeople. The flow temperature is defined as the temperature of the thermal transfer medium (e.g. water) that the system is supplied with. The temperature of the medium flowing out of the system is correspondingly called the return temperature. To prevent losses within the heat distribution system and achieve a better level of efficiency, spot recording of flow and return temperatures is necessary. 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. The German Energy Saving Regulation (EnEV) requires hydraulic adjustment for systems being set up or overhauled for this very reason.

Pressure tests on gas pipes (leak test with external high pressure probe, load test)

The technical regulation for gas installations (in short: TRGI) is a binding and at the same time important regulation for skilled tradespeople. The TRGI governs how gas installations are to be planned, designed, serviced and maintained. This applies to all gas installations. This regulation is taken care of by the German Association for Gas and Water (DVGW). The TRGI 2008 is the current version. Amongst other things, this states that gas pipes are to be tested according to the construction phase (basic shell, completion and repairs). The following checks in particular play a role in the application stated here:

Load test
In this process, the material is tested for stability and the connections for service life; this takes place prior to plastering over or concealment of the gas pipes. During load testing, the newly installed pipe, without fittings or gas appliances, is subjected to 1 bar pressure. The testing medium is air or inert gas. There must be no pressure drop detected during the test, which lasts at least 10 minutes.

Leak test
This test is for checking the pipe for leaks, with fittings and without gas appliances. The measuring instrument must not register any drop in pressure during the minimum 10-minute testing period (depending on the system volume); the test pressure is 150 mbar (previously 110 mbar).

Termékkatalógusok

Használati utasítások

Szoftver