Dwyer B190系列单级顶板位移式液位控制

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Dwyer B190系列单级顶板位移式液位控制

我们最通用的液位控制装置之一,190系列可用于所有类型的油箱或水池液位控制应用程序。Mercoid浮筒控制使用浮筒不浮在液体表面但悬浮在线圈弹簧上的驱替器。它们的工作原理是液体中淹没固体的重量较小,而随着液体水平的上升和重量的降低,悬浮在水中的弹簧的张力也随之降低。由于它们的工作原理与浮式液位控制不同,驱替器不受湍流或压力的影响,对于粘稠或肮脏液体的应用是很好的。

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

EXAMPLEA190G4810PA0.41INCSeries 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.
TYPEA
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 TYPESWITCH ACTIONELECTRICAL RATINGS IN AMPSORDERING CODE
ACDC
120V240V440V30V125V250V
CHART A
Mercury
Contacts
SPST Open on Level Fall1053†
1054821
SPST Open on Level Rise1053†
1054820
SPDT One switch421†
454810
SPDT Two switches E.I.*1053†
1054815
DPST Two switches E.I.* Open on Level Fall1053†
1054813
DPST Two switches E.I.* Open on Level Rise1053†
1054814
DPDT Two SPDT switches421†
424806
CHART B 
Snap Action
Contacts
SPDT One switch1253†
0.5†0.25†7810
DPDT Two SPDT switches1253†
0.5†0.25†7806
SPDT One hermetically sealed switch55
5†

7810HM
DPDT Two hermetically sealed SPDT switches55
5†

7806HM
DPDT Two SPDT switches103

10‡3‡9806
SPDT One switch103

10‡3‡9810




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