Pramp Automation and Calibration
Category: Level
Product: Level Switches
Sub Product: Top mounted level switch
All controls have been designed using modular concept. Standard assemblies may be incorporated in a wide variety of arrangements to meet virtually any control application allowing maximum interchange ability of assemblies. DK’S unique engineering & manufacturing capability handles your special process requirements promptly without long delays at an economical cost.
Operating Principle
The basic operation principle for magnetic switch action results from a change in liquid level, which moves a magnetic attraction sleeve (SS410/MS) into the field of an externally located ‘U’ magnet, thus overcoming the force of the bias spring & actuating the switching element.
Salient Features
- Single & multiple switch model
- External adjustment range
- Robust construction
- Threaded, Flanged or Socket weld connections
- Choice of switches: - Micro Switch / Reed Switch / Mercury Switch / Air-Break Switch
Applications
These reliable instruments are ideally used for on – off liquid level control, alarm & safety shut- down service in a wide variety of application including large steam-electric generating stations, oil refineries & chemical processing operations.
Tandem Float Option
These reliable instruments are ideally used for on – off liquid level control, alarm & safety shut- down service in a wide variety of application including large steam-electric generating stations, oil refineries & chemical processing operations.
Standard Specifications
Type: Magnetically coupled float type.
Working principle: Attraction
Material of Construction for float & wetted parts: 304 SS / AISI 304 SSL / AISI 316 SS / AISI 316 SSL / PVC / Polypropylene / Teflon / Ebonite etc.
Switch cover: Cast Al. weatherproof as per IP-55 / 65 / 66 / 67, anticorrosive painted.
Process Connection: Flanged 1½” to 6” As per ANSI, DIN, JIS, BS, IS Standard or screwed.
External Cage Connection type: Flanged / Socket Welded / Screwed
Signalisation Contact: Micro Switch /Mercury Switch / Reed Switch / Air Break Switch
Form Contact Rating: 1 NO + 1 NC, 2 NO + 2 NC
Electrical Connection: 5A, 240/110V AC, 0.25A, 220V DC, 1A, 240/110V AC, 10A, 240V AC
Accuracy: ± 1 %
On – off Differential: 12 mm ± 2 mm (fixed). OR 12 – 25 MM ± 2 MM (Adjustable)
Set Point: Adjustable
No. Of Set point: Single / Double / Triple / Quadruple
Max. Height: 3 meters
Max Operating Pressure: 200 Kg/cm2
Max Operating Temperature: 540?C
Specific Gravity: 0.55 to 1.5
Flameproof Type:
Specifications same as above:
Switch Cover Cast AL. Alloy LM-6 approved by ERTL (E) / CMRI, Dhanbad for group IIA & IIB gases as per IS : 2148 - 1981 & Weatherproof to IP-66 as per IS:13947
