LV621-N_LV622-N_LV623-N_LV624-N液位控制开关OMEGA

LV600系列独特的浮球液位开关仅需***个液位开关就可提供***种经济的泵升/泵降液位控制方法。通过调整允许LV600浮动的电缆长度来设置开/关差分。取决于LV600是随电缆向上还是向下浮动（参见图纸），15安培继电器是打开还是关闭。当LV600高于或低于固定点80%的电缆长度时，继电器改变状态。例如，如果电缆固定在10英尺（3米）的自由电缆上，则LV600将在固定点上方和下方8英尺（2.5米）处触发。因此，湍流通常不会导致错误的切换。电缆可以固定在管道上，也可以通过在电缆上滑动来使用附件配重（参见图纸）。机械式单刀双掷开关没有潜在的危险水银，在250伏交流电压下额定电流为15A，开关次数可以超过100000次。内部微动开关继电器具有UL和CSA认证。外壳和电缆通过两步塑料注射成型工艺进行密封，以确保密封不泄漏。

LV621-N_LV622-N_LV623-N_LV624-N液位控制开关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液位控制开关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.