Flowmetering Swirl flowmeters 3
Performance specifications
Measured error (including transmitter) depending on the measuring medium and operating mode Fluid Operating volume flow ±0,5 % Standard volume flow ±0,6 % Mass flow measurement ±0,6 % Gas Operating volume flow ±0,50 % Standard volume flow* ±0,64 % Mass flow measurement* ±0,64 % Steam Operating volume flow ±0,50 % Measurement of overheated steam / saturated steam mass (with internal temperature measurement) ±2,50 %
3.9 6
Measurement of overheated steam / saturated steam mass (with internal temperature measurement and external pressure measurement)* Measurement of overheated steam / saturated steam mass (with external temperature and pressure measurement)**
±0,71 %
±0,57 %
* When using a pressure transmitter with 0.1 % accuracy ** When using a pressure transmitter with 0.1 % accuracy and a temperature transmitter with PT100 Class A Measured error for current output Additional measured error < 0,1 % At zero-point: < 0,05 % / 10 K A pipe offset in the inlet section or outlet section can influence the measured error. Additional measured errors may occur if there are deviations from the reference conditions. Repeatability DN15 to DN20 (½ in to ¾ in) 0,3 % DN25 to DN150 (1 to 6 in) 0,2 % DN200 to DN400 (8 to 12 in) 0,2 % Temperature measurement Measured value deviation (including transmitter) ±1 °C or 1 % of measured value (in °C), whichever is greater Repeatability ≤ 0.2 % of the measured value Response time 200 ms (1 tau) or 3/f in seconds (with deactivated damping, the respective greater value shall apply). The response time depends on the respective swirl frequency f. Low flow rates can result in higher response times.
TI-P799-01 EMM Issue 1
Page 6 of 14
SLM30-E Swirl Flow Meter
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