欧美在线操视频,中国老熟女啪啪,成人夜色视频网站在线观看,亚洲熟女精品电影

發(fā)布信息

AT3A3000 Photohelic Swit 防爆微差壓開關(guān)/表-德威爾Dwyer

點擊圖片查看原圖
品牌: 德威爾Dwyer
單價: 面議
所在地: 上海
有效期至: 長期有效
最后更新: 2018-07-19 09:43
瀏覽次數(shù): 935
詢價
店鋪基本資料信息
 
產(chǎn)品詳細說明
AT3A3000 Photohelic Swit 防爆微差壓開關(guān)表-德威爾Dwyer

Flame-proof ATEX approved SERIES AT3A3000 Photohelic® Switch/Gages, function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Photohelic® switch/ gage measures and controls positive, negative or differential pressures of air and compatible gases. Standard models are rated to 25 psig (1.7 bar) with options to 35 psig (2.4 bar) or 80 psig (5.5 bar). Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on the gage face (accessible opening case after de-energizing instrument). Set points can be interlocked to provide variable dead band– ideal for control of fans, dampers, etc. Gage reading is continuous and unaffected by switch operation, even during loss of electrical power. Flame-proof ATEX enclosures are available in aluminum with glass window which allows for viewing of set point needles and process pressure. 

Important notes for installation: 
• Cables must be fitted through 1/2" NPT cable gland or ATEX conduit (not supplied with instrument). 
• Make sure after cabling to close tight cover and cable gland, in order to keep IP66 rating (IP65 with option OPV, overpressure relief valve). 
• Open cover only after de-energizing instrument. 
• Attention: Check local safety rules and warnings on unit and manual for a correct use of the instrument in hazardous area.

Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±2% of FS at 70°F (21.1°C); ±3% on -0 and ±4% on -00 models.
Pressure Limits: -20 in Hg to 25 psig (-0.677 to 1.72 bar). MP option; 35 psig (2.41 bar), HP option; 80 psig (5.52 bar).
Temperature Limits: 20 to 120°F (-6.67 to 48.9°C) LT low temperature option to -20°F available; Case: -76 to 140°F (-60 to 60°C) (Note: Product temperature limits differ from case).
Dial Size: 4" (101.6 mm).
Mounting Orientation: Diaphragm in vertical position.
Set Point Adjustment: Adjustable knobs on Photohelic® gage face behind enclosure cover. Follow instructions and safety warnings to open cover.
 
SWITCH SPECIFICATIONS:
Switch Type: Each setpoint has 2 Form C relays (DPDT).
Repeatability: ±1% of FS.
Electrical Rating: 10 A @ 120 VAC, 6 A @ 240 VAC, 60 Hz res. 10 A @ 28 VDC.
Electrical Wiring: Screw terminals.
Power Requirements: 120 VAC, 50/60 Hz; 240 VAC & 24 VAC power optional.
 
Enclosure Rating: IP66. IP65 with option OPV, overpressure relief valve.
Housing material: Aluminum.
Finishing: Texture epoxy coat RAL7038.
Pressure Connections: 1/8" NPT female brass (SS optional). In presence of acetylene it is necessary to use SS.
Electrical Connections: Three 1/2" FNPT. Cable gland not included.
Weight: 28.4 lb (12.9 kg).
ATEX Approved Products from Comhas with ECN: BVI 14ATEX0072.
Agency Approvals: CE 1370 II2 GD Ex d IIC Gb T6; -60°C ≤ Ta ≤ +60°C Ex tb IIIC Db T 85°C.
中日精品无码一本二本三本| 中国熟妇牲交视频| 日韩欧美国产强奸| 亚洲午夜精品二区三区公司| 精品国产免费观看久久久| 久久免费不卡AV| 午夜视频久久久久一区| 色综合99久久久无码| 久久久www成人免费_看片| 2014亚洲天堂| 久久久久久久99精品老熟妇 | 欧美自拍偷拍另类| 无码粉泬正在播放一线天| 成人AV毛片无码免费网站| 啊灬啊别停灬用力啊无码视频| 成人娱乐综合网| 精品无码人妻一区二| 欧美性爱97社区| 最新国产欧美日韩成人在线| 欧美亚洲国产片在线播放| 波野结衣在线播放| 亚洲区精品乱伦| av成人片在线| 亚洲一久久久久久久久| 无人视频免费看wwwvideoscom| 免费大片黄国产在线观看| 无码aⅴ精品一区二区三区视频 | 又色又污又爽又黄的网站| 国内精品久久久久久久| 西西337b| 国产日产欧产美韩系列影片| 精品乱子一区二区三区| 99人成精品视频9| 成人无码国产| 色婷婷婷亚洲综合丁香五月 | 亚州A乱码毛片| 欧美成人国产精品视频蜜芽| 欧美日韩国产码高清综合人成 | 日韩av蜜桃在线| 亚洲欧美自拍偷拍| 夜夜骑综合社区|