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LV621-N_LV622-N_LV623-N_LV624-N液位控制開關OMEGA

LV600系列獨特的浮球液位開關僅需***個液位開關就可提供***種經濟的泵升/泵降液位控制方法。通過調整允許LV600浮動的電纜長度來設置開/關差分。取決于LV600是隨電纜向上還是向下浮動（參見圖紙），15安培繼電器是打開還是關閉。當LV600高于或低于固定點80%的電纜長度時，繼電器改變狀態。例如，如果電纜固定在10英尺（3米）的自由電纜上，則LV600將在固定點上方和下方8英尺（2.5米）處觸發。因此，湍流通常不會導致錯誤的切換。電纜可以固定在管道上，也可以通過在電纜上滑動來使用附件配重（參見圖紙）。機械式單刀雙擲開關沒有潛在的危險水銀，在250伏交流電壓下額定電流為15A，開關次數可以超過100000次。內部微動開關繼電器具有UL和CSA認證。外殼和電纜通過兩步塑料注射成型工藝進行密封，以確保密封不泄漏。

LV621-N_LV622-N_LV623-N_LV624-N液位控制開關OMEGA

SPECIFICATIONS 

Minimum Fluid Specific Gravity: 0.62 for LV610; 0.72 for LV620

Min/Max Level Differential: Approximately 152 mm (6") to many feet, depending on cable length 

Operating Temperatures: PVC Cable; Switch Rating: SPDT, 15 A @ 250 Vac-25 to 50°C (-13 to 122°F); Neoprene Cable; -25 to 50°C (-13 to 122°F)

Operating Pressure: 75 psig at 70°F./21°C Pressure rating decreases with increasing temperature

Wetted Surfaces: Polypropylene body and PVC or Neoprene cable

Counterweight Dimensions: 2" Diameter x 2.25" High

LV621-N_LV622-N_LV623-N_LV624-N液位控制開關OMEGA

Use One Switch for Differential or Hi/Lo Control

Adjustable Level Differential from 6" to Over 100'

Case and Cable Hermetically Sealed by Plastic Injection Molding

Circular and Rectangular Designs

The LV600 Series unique float level switches provide an economical means of pump-up/pump-down level control with just one level switch. The ON/OFF differential is set by adjusting the length of cable over which the LV600 is allowed to float. Depending on whether the LV600 is floating with the cable UP or DOWN (see drawing), the 15 amp relay is on or off. The relay changes state when the LV600 is above or below the fixed point by 80% of the cable length. For example, if the cable is fixed for 10' (3 m) of free cable, the LV600 will trigger at 8' (2.5 m) above and below the fixed point. Thus, turbulence will generally not cause false switching. The cable can be fixed to a pipe, or the accessory counterweight can be used by slipping it over the cable (see drawing). The mechanical SPDT switch has no potentially dangerous mercury, is rated for 15A at 250 Vac, and can switch more than 100,000 times. The internal microswitch relay carries UL and CSA approvals. The case and cable are hermetically sealed by a two-step plastic injection molding process to ensure a leak-tight seal.