Ka taea te hono i te tāurunga anaro ki ngā tohu pāmahana e whā, 4-20mA te rahi, mai i waho. Ina tatauhia te pūngao, ka hono a T1 ki te pūoko tomo, ā, ko T2 ki te pūoko putanga.
E rua ā mātou tikanga hei tatau i te pūngao.
Tikanga 1：
Pūngao=Rere × Rerekētanga Mahana × kaha wera （Kei hea：Rerekētanga Mahanae pā ana ki te rerekētanga pāmahana i waenga i a Tin me Tout; kei te Tahua 86 te kaha wera,ko te tikanga he -1.16309KWh/m3℃）
Tikanga 2:
Pūngao = Rere ×(enthalpy wera i te pāmahana T1 - enthalpy wera i te pāmahana T2)
Ka tatau aunoatia tēnei enthalpy wera e te mita wera e ai ki ngā paerewa ā-aopaerewa.
Te wā tuku: 17-Pepuere-2023