DL-SR-10S-450 Resistance Rotary Level Switch

Working principleDL-SR-10S-450

The working principle of the resistance rotary level switch is to use a permanent magnet motor to drive the blades to rotate. When the detected material rises to the blade position, the rotation of the blades is obstructed, and this resistance is transmitted to the detection device inside the junction box. The detection device then outputs a switch signal to the outside and cuts off the power to stop the blades from rotating. When the material level drops, the blade resistance disappears, and the detection device relies on the tension of the spring to return to its original state. The spring tension is adjusted for different material densities. When the density is high, the spring tension is adjusted to strong or strongest, and vice versa, it is adjusted to weak or weakest.

2、 Technical parametersDL-SR-10S-450

1. Power supply: 220VAC (A), 110VAC (B), 24VAC (C) 50/60Hz

2. Power consumption: 3W

3. Contact capacity: 5A/250VAC SPDT (single pole double throw)

4. Blade speed: counterclockwise 1r. p.m. (revolutions per minute)

5. Torque: 10kg · m (1.0N · m)

6. Material density: ≥ 0.4 g/cm³

7. Working temperature: -10~80 ℃ (the highest temperature can reach 300 ℃)

8. Insulation impedance: ≥ 100M Ω (500VDC)

9. Dielectric strength: 1500V for 1 minute

3、 Installation precautionsDL-SR-10S-450

1. The inlet of the junction box must face downwards, and the cable fixing nut must be tightened.

2. When delivering power, it should be confirmed that the power supply voltage is the same as the voltage marked on the resistance rotary switch.

3. The load of the controlled circuit must match the contact capacity of the resistance rotary switch.

4. The rotary switch should be avoided from being installed under the feeding port to reduce material impact on the blades and misoperation; When unavoidable, it can be installed above the blades

Protective board.

When disassembling and installing the adjustable shaft length resistance rotary switch on site, the locking nut must be coated with oxygen deficient adhesive when connecting the steel wire rope joint to the transmission shaft, and then tightened with a wrench.

6. There should be no toxic gases present at the installation site that can corrode aluminum alloys.

4、 Torque adjustmentDL-SR-10S-450 Resistance Rotary Level Switch

1. Users can adjust the torque according to the specific gravity of the tested material. When the specific gravity of the measured object is high, the spring torque can be adjusted to the strong or strongest position, but the sensitivity of the switch is poor at this time; When the specific gravity of the tested material is low, the tension spring can be adjusted to weak or weakest, and the sensitivity of the switch is better at this time.

2. Specific method: Open the junction box, take out the torsion spring near the porous end, and insert it into the corresponding hole as needed (the hole near the terminal block has the strongest torsion).

※ Note: Please do not replace the tension spring at will to avoid misoperation.DL-SP31 resistive rotary level switch

5、 Common faults and troubleshootingDL-SR-10S-450 Resistance Rotary Level Switch

6、 Daily maintenanceDL-SR-10S-450 Resistance Rotary Level Switch

1. Check whether the transmission shaft and blades are bent, deformed, damaged, or loose.

2. Check if the connection between the drive shaft and the blades is secure.

3. Regularly remove materials and debris from the blades and transmission shaft