4.1 Design requirements 設計要求
When designing the heating system, the heat meter supplier's installation instructions shall be followed.
設計加熱系統時，溫度傳感器的供應商提供以下安裝說明。
NOTE For DN 25 and smaller, it is possible to use short probes. To achieve good temperature sensitivity, probes should be installed without temperature pockets. Temperature pockets should only be used when required for safety reasons.
註意直徑是25 和更小的，要使用短探針。為達到溫度靈敏度最好效果，探針在安裝時去掉溫度包。溫度包只有在達到安全條件時才被使用。
4.2 Installation requirements 安裝要求
The heat meter shall be installed in accordance with the supplier's instructions.
安裝溫度傳感器參考供應商提供的說明。
Before installation, the circuit into which the flow sensor is to be installed shall be thoroughly flushed to remove debris. The strainer, where fitted, shall be cleaned.
開始安裝前，確定流量傳感器的電路已被安裝，徹底移除安裝碎片。固定過濾器，確保已被打掃。
The heat meter shall be protected from the risk of damage by shock and vibration induced by the surroundings at the place of installation.
The heat meter shall not be subjected to undue stresses caused by pipes and fittings.
溫度傳感器避免受安裝地點環境引起的振動和由震動造成的損害。溫度傳感器要避免因管道和裝置引起的不適當重壓。
The pipe lines of the heating system up and downstream of the heat meter shall be adequately anchored.
安裝在溫度傳感器上下部分的加熱系統管線要被固定牢固。
Heat meters designed to operate from an AC mains supply shall be wired in accordance with wiring regulations applicable.
溫度傳感器由AC交流電源供應，配備的電線符合電線規章。
The AC-mains power supply shall be secured against accidental interruption. However, circuit protection shall be incorporated according to the state of the art, to safely disconnect the device when electrical problems occur.
AC電源供應壹旦受突發事件中斷，確保電源受保護。當電路故障發生時，安全拆開設置時，要提供與技術發展水平壹致的電路保護。
Measurement signal leads shall not be laid directly along side other leads such as mains supply cables, low voltage supply cables and data communication cables and shall be independently supported. The separation
between those groups shall not be less than 50 mm.
信號測量線不要與其它線（如主電源線，低壓線，數據傳輸線）直接安裝在壹起，它們是被獨立安裝的。這些線的安裝間隔距離不小於50毫米。
Mains and external signal cables longer than 10 m shall in areas where lightning is frequent be protected with an external lightning surge protection at the cable entrance to the building.
主線和外部信號線超過10米的，在線進入大樓的入口處時設置避雷保護，避免雷擊。
Each signal lead between temperature sensors and calculator shall be one continuous length without joints.
每壹條連接溫度傳感器和計算器的信號線應是壹條線，沒有連接處。
Signal circuits between parts of a heat meter shall be so installed as to deter unauthorized interference and disconnection.
在溫度傳感器之間的信號線路被安裝時，要確保不受其它信號幹擾。
Precautions shall be taken to prevent damage to the heat meter by unfavourable hydraulic conditions(cavitation, surging, water hammer).
溫度傳感器要做預防措施來防止因水力條件（氣穴，沖擊，水擊）引起的損害。
When the installation of the heat meters is complete, it shall be inspected and approved by representatives of the competent authority in accordance with established procedures.
溫度傳感器安裝流程完成後，由主管當局代表根據規定程序檢測，經核實批準使用。