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Dwyer B190系列单级顶板位移式液位控制
Dwyer B190系列单级顶板位移式液位控制
介质:兼容液体
接液材质:电缆，弹簧和止动器：316 SS。可选Inconel®弹簧；浮筒：可选304SS，316SS，或碳石墨。
温度范围:环境: 32 to 200°F (0 to 93°C);过程: 32 to 200°F (0 to 93°C).
压力限制:125 psig (8.6 bar).高耐压可选.
封装:NEMA 4X. 可选通用或防爆
开关类型:SPDT, 密封开关，或水银开关。可选的DPDT或两个阶段。
电气额定:Snap switch: 12 A @ 120 VAC, 5 A @ 240 VAC, 0.5 A @ 125 VDC resistive, 0.25 A @ 250 VDC resistive; Hermetically sealed snap switch: 5 A @ 120 VAC, 5 A @ 240 VAC, 5 A @ 30 VDC resistive; Mercury switch: 4 A @ 120 VAC/DC, 2 A @ 240 VAC/DC. Higher contact ratings available for the mercury switch.
电气连接:螺丝端子
电气出口:3/4"NPT内螺纹.
过程连接:4" 125 铸铁法兰其他材料，大小和额定法兰是可用的
安装方向:垂直
设定调节:通过移动位移器调节，可以看到最小值和最大值的尺寸图
介质比重:标准1.0. 通过用所需的比重设置替换型号中的1.0来指定订购时间。可设定范围为0.5至1.2。
绳长:10 ft (3 m)标准. 可选最长100 ft (30.5 m).
重量:通用或水密外壳，4"125#铸铁法兰约28磅(12.7公斤)；防爆或防爆/防蒸汽约32磅(14.5公斤)
认证:UL, 不包含HM型.
*Inconel®是Huntington合金公司的注册商标
选型表
| EXAMPLE | A | 190 | G | 4810 | P | A | 0.4 | 1 | INC | Series A190-G-4810-P-A-0.4-1-INC Level Control, SPDT, porcelain displacers, 10 ft. cable, 0.4 specific gravity, 3" 125# cast iron flange, with Inconel spring. |
| TYPE | A AA B BB | 4" Flange or Larger, Fixed Differential 3" Flange, Fixed Differential 4" Flange or Larger, Adjustable Differential 3" Flange, Adjustable Differential | ||||||||
| SERIES | 190 | Single Stage Top Mount Displacer Type Liquid Level Control | ||||||||
| ENCLOSURE | G WT E EV | General Purpose Watertight Explosion-proof Explosion-proof/Vapor-proof | ||||||||
| CIRCUITS | 48XX 78XX 78XXHM 98XX | See Chart A below See Chart B below See Chart B below See Chart B below | ||||||||
| DISPLACERS | S S304 I | 316SS 304SS Intrf 3-1/2 dia. x 10 (A190, B190 only) | ||||||||
| CABLE LENGTH | A B C D E F G | 10 ft. 15 ft. 20 ft. 25 ft. 30 ft. 40 ft. 50 ft. | ||||||||
| SPECIFIC GRAVITY | 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 | 0.4 S.G. (A190, AA190 only) 0.5 S.G. (A190, AA190 only) 0.6 S.G. 0.7 S.G. 0.8 S.G. 0.9 S.G. 1.0 S.G. 1.1 S.G. 1.2 S.G. | ||||||||
| FLANGE | 00 0 6 7 8 9 10 11 12 13 14 15 6S 7S 8S 9S 10S 11S 12S 13S 14S 15S | 3" NPT connection 3/4" Screw connection 3" 150# RF carbon steel 4" 150# RF carbon steel 5" 150# RF carbon steel 6" 150# RF carbon steel 8" 150# RF carbon steel 3" 300# RF carbon steel 4" 300# RF carbon steel 5" 300# RF carbon steel 6" 300# RF carbon steel 8" 300# RF carbon steel 3" 150# RF 316SS 4" 150# RF 316SS 5" 150# RF 316SS 6" 150# RF 316SS 8" 150# RF 316SS 3" 300# RF 316SS 4" 300# RF 316SS 5" 300# RF 316SS 6" 300# RF 316SS 8" 300# RF 316SS | ||||||||
| OPTIONS | INC R STW 01 02 12 23720 | Inconel Spring Manual Reset SS Tag Wired Breather Only (E-Housing only) Drain Only (E-Housing only) Breather and Drain (E-Housing only) Fungus Proofing |
表 A & B - 电路和额定值
| SWITCH TYPE | SWITCH ACTION | ELECTRICAL RATINGS IN AMPS | ORDERING CODE | |||||
| AC | DC | |||||||
| 120V | 240V | 440V | 30V | 125V | 250V | |||
| CHART A Mercury Contacts | SPST Open on Level Fall | 10 | 5 | 3† | 10 | 5 | 4821 | |
| SPST Open on Level Rise | 10 | 5 | 3† | 10 | 5 | 4820 | ||
| SPDT One switch | 4 | 2 | 1† | 4 | 5 | 4810 | ||
| SPDT Two switches E.I.* | 10 | 5 | 3† | 10 | 5 | 4815 | ||
| DPST Two switches E.I.* Open on Level Fall | 10 | 5 | 3† | 10 | 5 | 4813 | ||
| DPST Two switches E.I.* Open on Level Rise | 10 | 5 | 3† | 10 | 5 | 4814 | ||
| DPDT Two SPDT switches | 4 | 2 | 1† | 4 | 2 | 4806 | ||
| CHART B Snap Action Contacts | SPDT One switch | 12 | 5 | 3† | 0.5† | 0.25† | 7810 | |
| DPDT Two SPDT switches | 12 | 5 | 3† | 0.5† | 0.25† | 7806 | ||
| SPDT One hermetically sealed switch | 5 | 5 | 5† | 7810HM | ||||
| DPDT Two hermetically sealed SPDT switches | 5 | 5 | 5† | 7806HM | ||||
| DPDT Two SPDT switches | 10 | 3 | 10‡ | 3‡ | 9806 | |||
| SPDT One switch | 10 | 3 | 10‡ | 3‡ | 9810 | |||
