Level gauges radar waveguide D-6 (further – level gauges) are intended For continuous measurements level liquids And loose avg.
Level gauges wide are used V composition technological installations in various industries :
The operating principle of level meters is based on the use of time-resolved reflectometry (TDR) technology. The emitter of the level meter generates an electromagnetic pulse that propagates along measuring waveguide module (further – probe), immersed in the measured medium. When the pulse reaches the surface of the measured Wednesday, He reflected from her surfaces And comes back V receiver level gauge. Calculator level gauge processes received signal, measuring temporal interval between moment – volume dispatches generated impulse And moment reception reflected pulse , and calculates the level of the measured (controlled) environment.
The level gauges consist of an electronic unit housed inside a metal housing and a probe. Depending on the modification, the level gauge housing can be made of aluminum alloy or stainless steel . steel. Probe Maybe have different design: Cable , rod, coaxial. Probes are made from various materials , taking into account process parameters: aggressiveness of the medium, temperature , pressure. The length of the probe structurally determines the measurement range . level. By type accession level gauges can be presented V threaded or flanged execution. Level gauges can additionally be equipped liquid crystal display. Level gauge capable issue measured meaning V view analog current 4~20 mA or V view digital values By protocol HART and transmit it for further use by the control system, such How distributed system management (RSU) or programmable logical controller (PLC).
| Name characteristics | Meaning |
| Measurable Wednesday | liquid, bulk materials |
| Types probes | rod cable |
| Range measurements | from 150 to 6000 mm (rod probe) from 150 to 14000 mm (cable probe) |
| Limits permissible basic absolute error measurements level | ±3.1 mm (at distance to measurable surfaces up to 10,000 mm)±4.2 (at distance to measurable surfaces over 10,000 mm) |
| Limits permissible additional absolute errors measurement level caused by change temperatures surrounding air on every 10 °C from +20 °C | ±0.28 mm |
| Range temperatures measurable Wednesday | -40…+350 °C |
| Range pressure measurable Wednesday | -0.1…4.0 MPa |
| Day off signal | analog 4-20 mA digital HART |
| Nominal voltage power supply | 20…28 IN permanent current |
| Consumed power | Not more 660 mW |
| Accession To process | threaded flange |
| Material corps | aluminum stainless steel alloy steel 304 |
| Material probe | Stainless steel steel 304 Fluoroplastic-4 – PTFE |
| Conditions operation: – temperature surrounding Wednesday – relative humidity – atmospheric pressure |
from -40 to +70 °C from 0 to 90 % from 84 to 106.7 kPa |
| Appointed term services | 15 years |
| Average development on refusal – Not less | 63000 h |
| Code | Description |
| 4 | Type weekend signal/voltage nutrition |
| 2 | Analog 4-20 mA / 24 IN permanent current |
| 3 | Analog 4-20 mA + HART / 24 IN permanent current |
| 5 | Range temperatures measurable Wednesday |
| 1 | Standard temperature execution (-40…+130 °C) |
| 3 | Extended temperature execution (-40…+250 °C) |
| 4 | High temperature temperature execution (-40…+350 °C) |
| 6 | Range pressure measurable Wednesday |
| 1 | -0.1…0.3 MPa |
| 2 | -0.1…2.0 MPa |
| 3 | -0.1…4.0 MPa |
| X | Special accession (type required indicate separately) |
| 7 | Material seals |
| V | Viton (fluororubber) |
| TO | Kalrez ( perfluororubber ) |
| X | Special execution (type required indicate separately) |
| 8 | Material corpora/degree protection |
| A | Frame from aluminum alloy/IP67 |
| S | Frame made of stainless steel 304/IP67 |
| X | Special execution (type required indicate separately) |
| 9 | Execution By explosion protection |
| O | Without explosion protection (standard performance) |
| Exi | Marking explosion protection 0Ex ia IIC T1…T6 Ga X |
| 10 | Accession under cable input |
| N | Hole under cable input ½” NPT |
| M | Hole under cable input M20 |
| 11 | Availability residential complex display |
| 0 | Without residential complex display |
| A | WITH residential complex display |
| 12 | Length waveguide |
| XXXX | Length waveguide V mm. |
| 13 | Verification |
| – | Factory calibration |
| PV | Primary verification |
| Order example | D-6-AA-3-1-3-V- A – Exi – M -A-10000- PV |