WIKA FSD-4, Руководство по эксплуатации

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14399527.01 05/2021 EN/DE/FR/ES
27 WIKA operating instructions flow switch, model FSD-4
EN
8. Dismounting, return and disposal / 9. Specifications
Do not dispose of with household waste. Ensure a proper disposal in accordance with national regula-
tions.
9. Specifications
Accuracy specifications
Accuracy under calibration
conditions
The accuracy of the flow switch depends on various parameters such as flow profile, inlet condi -
tions, viscosity and/or thermal conductivity of the medium, possible contamination and/or deposits
on the sensor. Therefore, the reference measured values given only constitute an accuracy under
calibration conditions.
The model FSD-4 offers extensive adjustment possibilities to adapt the instrument to the on-site
conditions in the best possible way.
As a flow switch it is used for reliable monitoring, for example, of dry running. The flow value output
should only be used as a trend indicator in order to monitor process changes.
Flow 0.05 ... ≤ 1 m/s ≤ ±5 % of end value of measuring range
>1 ... ≤ 1.75 m/s ≤ ±10 % of end value of measuring range
> 1.75 ... 3 m/s ≤ ±20 % of end value of measuring range
Temperature ≤ ±2 K
Non-repeatability per IEC 62828-1
Flow ±2 % of end value of measuring range
Temperature ≤ 0.5 K (for flow ≥ 0.2 m/s)
Temperature error, flow at
-20 ... +85 °C [-4 ... +185 °F]
0.13 % of end value of measuring range per K (typical)
Switch hysteresis
Flow Adjustable, min. 1.7 % of end value of measuring range
Temperature Min. 1.8 K
Reference conditions Per IEC 62828-1