Description
ไซด์กลาส Danfoss รุ่น SGN 10
SIGHT GLASS (Low pressure)
ไซด์กลาส ยี่ห้อ Danfoss รุ่น SGN 10
ไซด์กลาส (Sight Glass) หรือ ตาแมวดูความชื้น กระจกมองน้ำยา
แบบแฟร์ ขนาด 3/8″
สินค้าคุณภาพของแบรนด์ Danfoss ผลิตจากทองเหลืองอย่างดี ทนต่อแรงดัน มีตัวบ่งชี้ความชื้นที่มีความแม่นยำสูง
Type SGN
Code number 014-0162
Connection : Flare ext. x ext. 3/8″
SIGHT GLASS (Low pressure) Types SG, SGI, SGN, SGR, SGRI and SGRN
SG is sight glasses for low pressure application (Max Working Pressure 500 psig).
SG is available with flare, solder and socket connections, and with and without moisture indicators.
SG and SGR, without moisture indicator, are mainly used to indicate the condition of the refrigerant in the liquid line or the flow in the oil return line from the oil separator.
SGI / SGN and SGRI / SGRN are equipped with sensitive indicators that reflects a color, which depends on the moisture content in the refrigerant.
FEATURES
Type SGN / SGRN (with N type indicator)
• For refrigerants :
R22, R134a, R404A, R407C, R507, R407A, R407F, R448A, R449A, R450A, R452A, R513A
• Indicates too high water content in the refrigeration system.
• Indicates lack of subcooling.
• Indicates refrigerant deficiency.
• Flare / flare, solder / solder connection or socket type.
AVAILABLE TYPES
Choice of sight glass moisture indication.
Before choosing a sight glass with moisture indicator, the following should be considered :
• type of refrigerant.
• water solubility of refrigerant.
• the level on which a danger signal is required.
Be aware that polyester oil for non-flammable refrigerants, e.g. R134a, R404A, R407C react with water in a hydrolysis generating acid and alcohol.
The recommended levels of moisture content are usually between 30 and 75 ppm, where hermetic compressors only tolerate very low moisture content, while semi-hermetic and other compressors normally tolerate higher moisture contents in the refrigerant.
The colour on the sight glass indicator depends on the moisture content of the refrigerant.
The values under “green / dry” are to be considered as perfect condition meaning full protection against harmful effects from moisture. In other words, the filter drier is working perfectly.
If the green color starts to fade, the color change has begun and the indicator should therefore be watched more carefully. If the color changes to yellow it is a clear signal that the capacity of the filter drier is exceeded and must be replaced immediately.
