YPL Bi-Color Port Level Indicator is suitable for steam/water application. It is high pressure boiler level indicator with multiport for continuous indication. Where presence of water is green indication is observed the illuminator viewing panel & red indicate Steam/Air.
Construction and Operation
It consists of trapezoid shaped liquid chamber in metallic construction with 5 to 21 number equi-spaced ports in front and rear of non-parallel vertical plane. Circular gauge glass with inner mica sheet is fitted on each port with sealing /cushion gasket and cover plate. The liquid chamber is fitted between two end blocks with isolation valve through single or double expansion loops. Tie bar is provided for better circulation of condensate and robustness of gauge assembly. An illuminator comprising bi-color glass filters(red & green) and A light source, housed in a steel enclosure with louvers are fitted On the rear side of the gauge. A viewing hood is fitted on front side Of the gauge for clear visibility. The gauge mounting is oriented on Right or left side of the process connection. It is provided with two Drain valve for extra safety. Refer table-1 for C TO C distance, visibility And number of ports. The rays from light source pass through bi-colored Filter fall on inclined gauge glass, fitted on trapezoid Shaped chamber and are refracted in steam or water According to their refractive index. It appears to the viewer as red color, when light Passes through steam and green color, when through Water.
TABLE 1 – C TOC DISTANCE AND NO. OF PORTS
| Sr.No. | C TOC Distance | Visibility | No. of Ports | |
| Single loop | Double loop | |||
| 1 | 535 | 615 | 315 | 05 |
| 2 | 610 | 690 | 390 | 06 |
| 3 | 685 | 765 | 465 | 07 |
| 4 | 760 | 840 | 540 | 08 |
| 5 | 835 | 915 | 615 | 09 |
| 6 | 910 | 990 | 690 | 10 |
| 7 | 985 | 1065 | 765 | 11 |
| 8 | 1060 | 1140 | 840 | 12 |
| 9 | 1135 | 1215 | 915 | 13 |
| 10 | 1210 | 1290 | 990 | 14 |
GAUGE MOUNTING ORIENTATIO
GAUGE GLASS FITMENT AT EVERY PORT
FEATURES
- Visibility of different level & center to center distance depend on client requirements.
- Standard of 3 piece cover for high pressure application.
- Belleville spring washer used for high pressure to maintain gasket loading under thermal And pressure cycles.
- Ball checks arrangement as optional.
- Expansion loop provided if in case high Pressure & Temperature application.
- High quality forged parts in CS/SS.
- Color port type visibility is per port is 20mm.
- Illuminator with low powered, high intensity LED bulbs, longer life.
- IBR certificate provided if required.
SPECIFICATIONS
|
Gauge Glass |
Ø Tempered Borosilicate(Medium Pressure) Ø Aluminosilicate (High Pressure) |
| Sealing/Cushion Gasket | SS Graphite |
| Mica | High quality grade with clear Transparency |
| Liquid Chamber(Gauge Body) |
Ø CS SA516 Gr. 70, CS ASTM A105(IBR) Ø ASTM 182F SS316 (Non-IBR) |
| Port Cover / Cover Plate | CS ASTM A105 or ASTM 182F SS316 |
| Bolts | ASTM A193 Gr. B7 bolts |
| Process Connection | 3/4″ or 1” socket weld or ASME Flange |
| Process Conn. MOC | CS ASTM A105(IBR), ASTM A182F SS316(Non- IBR) |
| Isolation Valve |
Integral offset Needle Valve Bolted Bonnet X auto ball check MOC- CS ASTM A105 (IBR) or ASTM A182F SS316 (Non-IBR) |
| Stand pipe | CS ASTM A106 Gr. B or ASTM A312 TP SS316 |
| Expansion loop |
CS ASTM A106 Gr. B or ASTM A312 TP SS316 Single expansion loop for oper. Pressure ≤ 50 kg/cm² |
| Vent | 1/2″ NPT Plug |
| Drain Valve | 1/2″ Socket weld Globe Valve(1500#) CS ASTM A106 or ASTM A182F SS316 |
| C to C Distance (CCD) | 535 to 1290mm |
| No. of Ports | 05 to 14 |
| Visible Port Dia. | 15mm |
| Viewing Hood | SS Moc ( for clear visibility) |
| Viewing Window Size | 8W X 20H mm |
| CC Dist. Betn Viewing Windows | 75 mm |
| Illuminator | SS Enclosure with ventilating louvers housed with high intensity LED bulbs |
| Conduit Connection | 1/2″ NPT DC cable gland brass |
| Power Supply | 230V AC or 24V dc |
| Gauge Mounting Orientation | Left or right |
| Max. Temperature | 300°C |
| Max. Operating Pressure |
Ø Upto 60kg/cm2 (Medium) Ø Upto 80kg/cm2 (High Pressure) |
| Max. Test Pressure |
Ø Upto 120kg/cm2 (Medium) Ø Upto 160kg/cm2 (High Pressure) |
