In reflex gauges,the fluid is viewed through a reflex glass, a crystal with a smooth surface and a prismatic surface.
The action of the refraction allows to see the internal level of fluid, considering that in its liquid fase totally absorbs the light and makes the fluid appear dark. The one connected with the gas totally reflects the light and has a clear color.
The reflex level gauges offer many advantages such as a low purchase and maintenance cost and an easy level reading.
However they cannot be used in certain cases, for example when the separation level between two liquid must be read;when the observation of the liquid color is required or when the fluid is high-pressure water stream.
Applications
Reflex glass level gauges can be used in most of cases and offer great advantages in terms of: low initial cost, low operating cost, easy level reading.
Reflex level gauges cannot be used in certain cases as for example:
- when the separation level between two liquids has to be read (interface)
- when besides the level indication, the observation of the liquid color is required
- when the process fluid is high-pressure water steam since in this case the glass must be protected from the solvent action of the boiler water by using mica shields
- when the process fluid is such that can corrode the glass (e.g. high-temperature alkaline solutions), since mica shields or Polytrifluorochloroethylene shields must be used to protect the glass
Range | 0-15m or customizable |
Display precision | ±2.5-5%mm |
Measured liquid | Hydrochloric acid, sulfuric acid, diesel, liquid ammonia, nitric acid, etc |
Medium temperature | 40~450ºC |
Medium pressure | 1.6MPA |
Medium density | ≥0.45g/cm³ |
Medium viscosity | ≤0.05Pa.S |
Liquid material | SS,PVC,Ti,PP |
Connection method | flange,Thread |
Model | TBS-F | TBS-A | TBS-HR | TBS-HT | RFL-40C |
Type | Reflex type | Transparent type | High pressure reflex type | High pressure Transparent type | 90 degree Quick open/close type |
C-C (mm) | 325-3600 | 285-2590 | |||
Visible Length (mm) | 95-3360 | 141-2433 | |||
Level Gauge Material | CS,SS304,SS316L,Ti,etc | Cast steel | |||
Glass Material | Borosilicate; Alumina-silicate | ||||
Gasket Type | Graphite composite gasket; non-Asbestos gasket; Mica seal components | ||||
Working temperature ºC | ≤450ºC | ||||
Working pressure Bar | 40 (Groove glass) 100 (Plate glass) | 100 (Plate glass) | 40 (Groove glass) 160 (Plate glass) | 160 (Plate glass) | 40 (Groove glass) |