Description
The RIM20 multivariable insertion turbine flowmeter utilises three primary sensing elements to measure the mass flowrate of steam, liquids and gases:
- Turbine velocity sensor,
- RTD temperature sensor,
- Solid-state pressure transducer.
Specifications
Temperature | Process | S option – Standard | -55 °C to +232 °C | -67 °F to +450 °F |
H option – High | -267 °C to +454 °C | -448 °F to +850 °F | ||
Ambient | Operating | -40 °C to +60 °C | -40 °F to +140 °F | |
Storage | -40 °C to +85 °C | -40 °F to +185 °F |
Pressure ratings | Style connection | Connection/Rating |
Compression fitting | 2″ Male NPT ASME Class 600 | |
2″ ASME B16.5 Class 150 or DN50 EN1092-1 PN16 | ||
2″ ASME B16.5 Class 300 or DN50 EN1092-1 PN40 | ||
2″ ASME B16.5 Class 600 or DN50 EN1092-1 PN63 | ||
Packing gland and Removable retractor | 2″ Male NPT ASME Class 300 | |
2″ ASME B16.5 Class 150 or DN50 EN1092-1 PN16 | ||
2″ ASME B16.5 Class 300 or DN50 EN1092-1 PN40 | ||
Packing gland and Permanent retractor | 2″ Male NPT ASME Class 600 | |
2″ ASME B16.5 Class 150 or DN50 EN1092-1 PN16 | ||
2″ ASME B16.5 Class 300 or DN50 EN1092-1 PN40 | ||
2″ ASME B16.5 Class 600 or DN50 EN1092-1 PN63 |
Display | Alphanumeric 2 line x 16 character LCD digital display |
Six pushbuttons for full field configuration | |
Pushbuttons can be operated with magnetic wand without removal of the enclosure covers | |
Display can be mounted in 90° intervals for better viewing |
Accuracy | Mass flowrate accuracy for gas and steam based on 50 – 100% of pressure range |
Process variables | Liquids | Gas and steam | Repeatability | Stability over 12 months |
Volumetric flowrate | ± 1.2% of rate | ± 1.5% of rate | ± 0.1% of rate | ± Negligible |
Mass flowrate | ± 1.5% of rate | ± 2.0% of rate | ± 0.2% of rate | ± 0.2% of rate |
Temperature | ± 1.0 °C (± 2.0 °F) | ± 1.0 °C (± 2.0 °F) | ± 0.1 °C (± 0.2 °F) | ± 0.5 °C (± 0.9 °F) |
Pressure | ± 0.3% of full-scale | ± 0.3% of full-scale | ± 0.05% of full-scale | ± 0.1% of full-scale |
Density | ± 0.3% of reading | ± 0.5% of reading | ± 0.1% of reading | ± 0.1% of reading |
Response time | Adjustable from 1 to 100 seconds |
Principle of operation
Insertion turbine flowmeters measure flow of liquid, gas, and steam by detecting the frequency of rotation of the turbine blades. According to the proven laws of physics, the frequency at which the turbine rotates is directly proportional to the flow velocity.
Insertion turbine flowmeters measure flow by detecting the local velocity at a strategically located position within the pipe. The RIM20 detects the frequency within the sensor head.
It uses the local velocity, along with other parameters such as fluid type, pipe size, and Reynolds Number to calculate the average pipe velocity, and consequently, the volumetric flowrate.
Compliance
- Electromagnetic Compatibility Directive
- Low Voltage Directive
- ATEX Directive
Approvals
FM and FMC | Class I, Division 1, Groups B, C and D | |
Class II/III, Division 1, Groups E, F and G | ||
Type 4X and IP66, T6, Ta = -40 °C to +60 °C | ||
ATEX | S Temp. | II 2 G Ex db IIB + H2 T6…T2 Gb |
II 2 D Ex tb IIIB T85 °C Db | ||
H Temp. | II 2 G Ex db IIB + H2 85 °C…459 °C Gb | |
II 2 D Ex tb IIIB T85 °C Db | ||
IECEx | Ex d IIB +H2 T6 Gb | |
EX tb IIIB T85 °C Db, Ta= -40 °C to +60 °C |