Note diagram shows starter fitted with 250v coil for 3 phase 3 wire supply. A two wire single pole single throw float switchthe rising action of the float can either close ie turn on a normally open circuit or it can open turn off a normally closed circuitinstallation scenarios might include a normally open float switch turning on a pump to empty a tank control schematic 2 or a normally closed.
Mobrey Pdf Document
Mobrey level switch wiring diagram. M switch is a float operated liquid level switch to give a voltage free contact for alarm. 2130 enhanced vibrating fork liquid level switch output l direct load switching mains 2 wire 20 to 264 vac 5060 hz 20 to 60 vdc self checking p pnpplc low voltage 3 wire 20 to 60 vdc self checking d relay dpco 20 to 264 vac 5060 hz 20 to 60 vdc self checking. Mobrey magnetic float switches are ideal for high and low liquid level alarm and pump control duties. Operating levels differentials each switch has a nominal water level differential of 25mm between circuits a a and b b. For wide pump differential using an additional switch see wiring diagram figure 8. Mobrey float level switches are rugged robust and trusted globally for their long term reliability in the harshest of environments and the most hazardous areas.
The float switch is designed to open or close a circuit switch as a changing liquid level within a vessel passes the level of the float the switch point. High and low level alarm 23 ordering information level switch models fitted with options listed appendix b. It is 316 stainless steel construction has a contact rating of 15a250v and the maximum temperature is 130 deg c. Level switches certified to iec 61508 of this. Emerson global emerson. Around the pressure tube after wiring.
Sma1 m switch by mobrey measurement is a magnetic liquid level switch and is the most cost effective of the horizontal switches. Ideal for industrial applications such as pump control and high or low alarm duty on tanks and pressure vessels. Level mobrey vertical controls installation operation maintenance instructions. Mobrey float and displacer level switches are rugged robust and trusted globally for their long term reliability in the harshest of environments and the most hazardous areas. To obtain a differential greater than 25mm two switch units must be used and a holding circuit arranged for the starter control circuit see. Lets start with the most basic float switch.
For critical area applications or general purpose control you need to trust that your level switches wont let you down. 22 level switch purpose mobrey magnetic level switches are ideal for high and low liquid level alarm overfill alarm and pump control duties. Switch point adjustments may now be made if necessary.
