DLS 30 Industrial Displacer Level Switch

Features

• Site adjustable up to 4 switching points

• Wide choice of materials: SS304 / SS316 / SS316L, PP, or PVDF

• Safe and reliable switching through magnetic coupling

• Robust, shock-proof design ensures stable performance

• Wide differential switch design

• Radiation and seismically qualified

Description

A single or two split displacers are suspended from a wire rope connected to a coupler rod.
The rod carries an actuator that moves inside a non-magnetic barrier tube through a compression spring.

When the displacer is not immersed in liquid, the spring remains in a compressed state due to the weight of the displacer. As the liquid level rises, the displacer becomes immersed and undergoes a weight reduction (Archimedes Principle). This causes an upward motion of the coupler rod, allowing the spring to return to its normal position.

• Narrow Differential (ND): Achieved using one standard displacer (fixed differential).

• Wide Differential (WD): Achieved using two split displacers, and can be adjusted by varying the distance between them.

Technical Specifications Level Switch Type

• Displacer Type, Top Mounted

Range

• 1000 mm to 10,000 mm

Number of Switch Points

1. Single Point

2. Two Point

3. Three Point

4. Four Point

Type of Switch

1. Micro Switch

2. Hermetically Sealed Reed Switch

Switch Actuation Type

1. Falling Level

2. Rising Level

Switch Contact Type

1. Normally Closed (NC)

2. Normally Open (NO)

3. Latch Type

Switch Configurations

1. SPDT

2. DPDT

Switch Ratings

• Contact Rating: 1 Amp, 24 V DC (Inductive)

• Accuracy at Set Point: ≤ ±5 mm

• Repeatability: ≤ ±2 mm

• Contact Resistance: < 100 mΩ

• Response Time: < 2 seconds

• Contact Life: Better than 10⁶ operations

Switch Housing Material

1. Die-cast Aluminium

2. Stainless Steel

Ingress Protection

• IP-65

Displacer Type

1. Single

2. Split

Displacer Material

1. SS-304

2. SS-316

3. SS-304L

4. SS-316L

5. Other on request

Rope Material

1. SS-304

2. SS-316

3. SS-304L

4. SS-316L

5. Other on request

Spring Material

1. SS-304

2. SS-316

3. Inconel

4. Other on request

Process Connection

• Flanged

Maximum Operating Pressure

• 10 kg/cm² (g)

Accessories (Optional)

1. Perforated Type Stilling Well

2. External Chamber

Accessory Material

1. MS

2. SS-304

3. SS-316

4. Other on request