Pressure recorder autonomous RDA-L
Purpose and scope
Autonomous pressure recorder RDA-L is designed to measure and record pressure and temperature in an autonomous mode in technological installations of oil and gas producing and oil refining enterprises, heat power engineering and water supply enterprises .
Explosion protection RDA-L is ensured by enclosing electrical parts in a flameproof enclosure SWS-26 with explosion protection marking 1ExdIICT6 in accordance with GOST IEC 60079-0-2011.
Declaration of conformity of the Customs Union TC N RU D-RU.AB45.B.76552.
Product designation when ordering
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RDA |
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L |
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60 |
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0,5 |
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T2 |
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IP67 |
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B |
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| РДА-Л-60-0,5-Т2-IP67-Б | РДА-Л-60-0,5-Т2-IP67-БТ |
- Name.
- Cast body.
- Upper limit of gauge pressure measurement.
- Permissible measurement error.
- Working temperature range.
- Degree of protection provided by enclosure IP67 or IP64.
- Availability of a wireless communication module with a display device "B", an external temperature sensor "T".
The principle of operation of the RDA-L
Information is recorded in digital form in the internal memory of the device. Flash memory is used as memory microcircuits, which allows you to save information when the power supplies are off. Recording of readings of pressure, temperature (if there is a remote sensor) and power supply voltage is performed with a specified period from 1 to 255 seconds. The step for setting the measurement period is 1 second.
After the measurement process, the information is read into a computer for processing and analysis. Data can be displayed on a computer screen in digital and graphic form, printed on a printer or transferred to other data processing programs.
The RDA-L is configured and the accumulated information is read from it via the USB channel.
Specifications RDA-L
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Name |
RDA-L |
RDA-L |
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Upper limit of gauge pressure measurement range, MPa (depending on option) |
1.6; 2.5; 4; 6; 10; 16; 25; 40; 60 |
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Limits of permissible relative error in measuring excess pressure,% |
± 0.1 ; ± 0.25; ± 0.5; ± 1; ± 1.5 |
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Pressure resolution,% of the upper limit of the gauge pressure measurement range, not worse |
0.0015 |
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Temperature recording range, ° С , for the working range: |
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Temperature resolution, ° С , not worse |
- |
0.02 |
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The number of recorded values without reading memory, not less , |
865,000 |
540600 |
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Time of reading information through the USB adapter, min, no more |
five |
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Information storage time, years, not less |
ten |
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Nutrition |
1.2 to 3.6 V |
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Estimated duration of continuous operation of RDA-L from one battery, days, not less: |
70 |
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Overall dimensions: |
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Weight, kg , no more |
1.4 |
1.5 ** |
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Connecting thread |
М20х1.5 |
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* excluding the length of the remote temperature sensor
** excluding the weight of the external temperature sensor
In the embodiment with the wireless communication unit controlled by the current values of pressure are transmitted via radio and Wireless indicator (BI) may receive data from up to 3 0 meters in the open space.
How the wireless indicator works
To display the current readings of all DAM-A on the wireless display is necessary to select the serial number of the DAM-A and closer to it at a distance of no more than 3 0 meters to the line of sight (of reliable reception zone). The indicator will automatically start receiving data and displaying it on the screen.
There is also a HOLD function for fixing the current data, a function for monitoring the discharge of the battery, a function for displaying communication with the RDA-L unit.
Wireless Indicator Specifications
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Name |
Value |
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Distance between the wireless indicator and RDA-L, at which stable data transmission in open space is ensured, m |
100 |
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Simultaneous operation with several RDA-L devices |
there is |
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Remaining battery power display |
there is |
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Display of communication with RDA-L |
there is |
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Data update period, s |
1 |
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Operating temperature range, ° С |
from minus 25 to 50 |
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Supply voltage, V |
3 ± 0.5 |
Installation of RDA-L with a remote temperature sensor on the pipeline
