REFLEX LEVEL GAUGES

Product Details:

These gauges are used for measuring the level in a vessel.These can be used for maximum pressure of upto150kg/cm2 and a maximum temperature of 4000 C. Constructional features include upto 2.5 metre single piece construction with multiple glasses between process connections. A pair of auto shut off ball check valves in standard material of construction; Carbon Steel or Stainless Steel; Polypropylene as optional.

WORKING PRINCIPLE
The principle of Reflex Level Gauges is based on the difference in the refractive indices of liquid and vapour. The liquid column is contained within the recess of the liquid chamber behind the sight glass which is clamped to the gauge body. The sight glass has prismatic right angled grooves on the side facing the liquid and vapor space. Light rays entering from outside the gauge are either absorbed or reflected depending upon whether they enter the liquid or vapour space. When the ray of light encounters the surface of one of the grooves in the vapor space, it is reflected to the opposite surface of the grooves and from there, totally reflected back to the direction of observation. Thus vapour space appears as silvery white. When the light ray encounters the surface of the grooves in the liquid space, it is totally absorbed thereby the liquid behind the glass appear black.

Note :

In multi sections, the gap between two section is upto 10mm ( i.e. Blind portion)

Specification :

Guide to arrive visible Length (Reflex/Transparent Types)

Gauges are assembled with multi glass assembled sections. Below are the details of the glass length/sectional length & visible portion.

Section Length Glass Length Visible Length

360 mm	340 mm	340 mm
300 mm	280 mm	260 mm
270 mm	250 mm	230 mm

Suppose, 3 Nos. 340 mm glasses sections are used in level gauge having CC distance of 1200 mm then the total sectional length will be 360 x 3 = 1080 mm. Inter-section gap length will be 10 mm x 2 = 20mm As such total section length = 1080 plus 20 = 1100 mm Now, the visible length = 1100 - 40mm = 1060 mm where 40mm is our design factor applicable to all gauges irrespective of C-C Distance.

Side Mounted Liquid Level Switch

INTRODUCTION :
Side Mounted Level Switches are suitable for fitting into Tanks or similar Vessels for indicating or Controlling the Level of a Liquid. These switches can either be supplied in Weather Proof Housing, Explosion Proof Housing or for Intrinsically Safe Application as Certified by CMRI DHANBAD
PRINCIPLE OF OPERATION :
A change of liquid level correspondingly travels the float to extreme level UP and DOWN. This movement of float in turn causes a magnet to move into the proximity of Micro Switch, resulting in switch actuation.
TECHNICAL SPECIFICATION :
Maximum Switching Within 18mm of level change Differential of liquid at S.G. 1 Minimum S.G. 0.5 Switch Housing Aluminum Alloy Electrical Connection ½"NPT (Other optional) Maximum Repeatability +/- 1.5mm Float & Linkage 316 SS / 304 SS Max. Pressure
A) 15Kg/cm2 for AUTOMAT 'A' & 'G' Flanges 1) Minimum ID of Nozzle should be more than 50mm to enable the float to pass.
B) 100 kg/cm2 for Standard 2) Maximum 160mm ASA / DIN Flanges. Max. Temperature
a) Upto 150oC without Cooling Fins
b) Above150oC with Cooling Fins