3BHB004744R0010模塊,XVC517AE10使用書
孔口限制視野（目標區(qū)域），減少并保持空氣流量，保持空氣阻塞和增加火焰和背景輻射之間的區(qū)分。節(jié)流孔固定在帶有節(jié)流孔固定器的旋轉支架?？装逡部梢苑胖迷谝挥⒋绲幕罱宇^（未提供）內，或35-318-X安裝法蘭內。
理想情況下，掃描儀應能看到4到25平方英寸（25-150 cm2）的目標區(qū)域)火焰鋒面。
火焰前鋒是燃燒空間內的一個平面，將未燃燒的燃料區(qū)域與正在燃燒燃油。
XVC517AE10 3BHB004744R0010模塊注：辨別力和敏感性之間存在反比關系。
隔熱短節(jié)
隔熱短節(jié)零件號35-127-3（BSP）或35-127-1（NPT）可防止熱空氣的熱量傳遞掃描頭的觀察管。
石英窗密封聯(lián)軸器
當掃描儀管道需要聯(lián)軸器或密封時，使用密封聯(lián)軸器（P/N 60-1199-x）。
尺寸為1英寸美國標準錐管螺紋（1“NPT）。密封聯(lián)軸器有一個石英窗口，用于將掃描儀與爐膛壓力和熱量隔離。使用密封聯(lián)軸器時，1“三通/
Y形三通用于凈化空氣進口。確保石英窗正確就位，以密封掃描儀。做
不要過度擰緊連接環(huán)，因為可能會損壞車窗。為獲得最佳效果，請手動擰緊聯(lián)軸器套環(huán)。
Orifices (see Fig. 12)
The orifice restricts the field of view (target area), reduces and maintains air flow, maintains air block and
increases discrimination between flame and background radiation. The orifice is secured within the ball of
a swivel mount with an orifice retainer. The orifice can also be placed within a one inch union (not pro
vided), or within the 35-318-X mounting flange.
The scanner should ideally sight a target area of 4 to 25 square inches (25-150 cm2 ) of the flame front.
The flame front is a plane within the combustion space separating the region of unburned fuel from the
burning fuel.
Note: There is an inverse relationship between discrimination and sensitivity.
Heat Insulating Nipple
The heat insulating nipple P/N 35-127-3 (BSP) or 35-127-1 (NPT) prevents heat transfer from the hot
sight pipe to the scanner head.
Sealing Coupling with Quartz Window
The sealing coupling (P/N 60-1199-x) is used whenever a coupling or seal is required for scanner piping.
The size is one inch US standard taper pipe thread (1" NPT). The sealing coupling has a quartz window to
block off the scanner from the furnace pressure and heat. When the sealing coupling is used, the 1" tee/
wye is used for the purge air inlet. Be sure the quartz window is properly seated to seal off the scanner. Do
not overtighten coupling collar because damage to the window may result. For best results, hand tighten
coupling collar.
