Venturi sreabhaidh chriticiúil samplála chun samplaí comhréireacha den ghás sceite caolaithe a bhailiú (Venturi sreabhaidh chriticiúil – sampláil thoirt-tairiseach amháin).
A sampling critical flow venturi to take proportional samples of the diluted exhaust gas (CFV-CVS only).
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Murar féidir leis an ngaireas athruithe i dteocht an mheascáin gás sceite agus aer caolúcháin ag an bpointe tomhais a chúiteamh, úsáidfear teasmhalartóir chun an teocht a choinneáil chuig laistigh de ±6 °C den teocht oibrithe sonraithe le haghaidh PDP CVS, ±11 °C le haghaidh CFV CVS, ±6 °C le haghaidh UFM CVS, agus ±11 °C le haghaidh SSV CVS.
If the device cannot compensate for variations in the temperature of the mixture of exhaust gases and dilution air at the measuring point, a heat exchanger shall be used to maintain the temperature to within ±6 °C of the specified operating temperature for a PDP CVS, ±11 °C for a CFV CVS, ±6 °C for a UFM CVS, and ±11 °C for an SSV CVS.