《民規(guī)》第24.6.2.1規(guī)定:設(shè)在消防栓箱中的起動消防水泵的按鈕及啟泵信號燈的控制回路應(yīng)采用5V以下的安全電壓。第24.9.11規(guī)定:消防聯(lián)動裝置的直流操作電源電壓應(yīng)采用24V。這主要是防止使用消火栓時,有水溢出使消火栓箱及水、水帶電傷及消防隊員(這種擊傷事故時有所聞)。但在施工實(shí)際及部分參考資料中消防栓按鈕的操作電源電壓仍接到了交流22V上,如前面提到的《圖集》在同一頁上就犯了這樣的錯誤。。
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0192207111 Y-steel bearing UCP 214
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BALLUFF BMOA66RM-X63-1 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BIS-C-310-05 (Surplus New not in factory packaging)
BALLUFF C49BPE00PY050M CONNECTOR *NEW IN ORIGINAL PACKAGE*
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BALLUFF BNI-PNT-104-105-Z015 (Surplus New In factory packaging)
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BALLUFF BLE-S5-1-FS-15 (Surplus New In factory packaging)
Balluff BES-516-325-BO-C Proximity Switch BES-516-325-B0-C - New No Box
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BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
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分配給每把刀具的每個+或-按鈕為每次按鈕按壓賦予一個特定的偏置值。這些增量非常小(通常是.2英寸)以減少操作員對刀具磨損補(bǔ)償過度的的可能性。連接到該反轉(zhuǎn)立式機(jī)床控制器上的按鈕使操作員即使不看控制屏也能改變刀具偏置。每按壓一次按鈕將使刀具偏置增加或減少預(yù)定的距離。按鈕偏置法節(jié)約了時間,它無需從機(jī)床的控制屏導(dǎo)航來輸入偏置值。它還消除了操作員鍵入錯誤偏置值的可能性。偏置值存儲在控制器內(nèi)以防如果輸入了很大的一個偏置值(按壓按鈕很多次)而導(dǎo)致碰撞現(xiàn)象發(fā)生。
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