Level sensor for LPG
Overview
Level gauge for LPG MIRA+™ is designed for continuous measurement of level and temperature of liquids in tanks. The level sensor for LPG MIRA+™ is designed for continuous measurement of the level and temperature of gases in storage tanks.
Level gauges MIRA+™ can be additionally used for interface level measurement, alarm and notification generation when sub-critical or critical process parameter values are estimated (e.g., for overfilling protection - when level reaches “top fill level” or “alarm level” that was optioned by an operator).
Level sensor has EX protection type “Intrinsically safe electrical circuit” and can be mounted in hazardous areas of classes 0,1,2.
The level gauge is certified and can be used in custody transfer applications.
It is possible to produce equipment upon special requirements of the Customer. Information integration from the level sensor into any automation systems is available to signal subcritical and critical parameter values (e.g. approaching the set upper/lower product level), control interphase level.
Scope
Level gauges can be used for custody transfer, process control, continuous monitoring of various tank farms. Sensors are applicable for the use with the following products:
- liquified petroleum gas (propane, butane and etc.)
Conformance
Level sensor for LPG «MIRA+» meets the requirements:
- OIML R85-1 & 2:2014, OIML D11
- EN 60529:2018 (EN 60529:1991; A1:2000; A2:2013; AC:2016, IDT; IEC 60529:1989; A1:1999; A2:2013; Cor 2:2015, IDT)
- EN 61010-1:2014
- EN 61326-1:2006
- EN 60079-0:201б, EN 60079- 11:2017
Technical data
| Parameter | Value | |
|---|---|---|
| Level measurement range | 0 ... 5 m | |
| Max. measurement error | ± 1 mm | |
| Number of temperature measurement points | 1 … 7 | |
| Process temperature | -40 … +50 °С | |
| Max. temperature measurement error | ||
| for temperatures -20 … +50°С | ±0.5 °С | |
| for temperatures -40 … -20°С | ±1.5 °С | |
| Measurement units | mm, °С | |
| Output signal, interface | Modbus RTU, RS-485 | |
| Supply Voltage DC (Nominal) | 24 V | |
| Nominal current | 35 mА | |
| Supply Voltage Range, DC | 13 ... 26.5 V | |
| Current range | 30 ... 45 mА | |
| Max power consumption | 1.15 W | |
| Explosion-proof marking | Ex II 1G Ex ia IIB T4 Ga | |
| Safety-related data in accordance with ATEX | Ui = 27.0 V, Ii = 260 mА, Pi = 1.15 W, Ci = 0.36 uF, Li = 50 uH | |
| Cable | twisted pair, 0.5 ... 1 mm2 | |
| Tank connection | Flange, DN>=125 (see drawings for details) | |
| Degree of protection | IP67 | |
| Materials in contact with product | Wetted parts and sealings: Stainless steel AISI 304/321, PTFE (or equivalents) | |
| Max Net weight | 20 kg | |
| Permissible lateral load (waveguide) | 5 Nm | |
| Ambient temperature (operation), Ta | -25 ... +55 °С | |
| Process pressure | -0.1 ... 2.5 МPа | |
| Max. relative humidity | < 100 %, non-condensing | |
| Operation mode | 24/7 | |
Documentation
Certificates
Delivery set (typical)
| # | Name | pcs. |
|---|---|---|
| 1 | Level sensor for LPG MIRA+™ | 1 |
| 2 | Passport | 1 |
| 3 | User Manual | 1 |
| 4 | Software MIRA+™ Desktop | 1 |