Specifications; Accuracy Specifications - WIKA FSD-4 Mode D'emploi

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
Flow
Temperature
Non-repeatability per IEC 62828-1
Flow
Temperature
Temperature error, flow at
-20 ... +85 °C [-4 ... +185 °F]
Switch hysteresis
Flow
Temperature
Reference conditions
WIKA operating instructions flow switch, model FSD-4
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.
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
≤ ±2 K
±2 % of end value of measuring range
≤ 0.5 K (for flow ≥ 0.2 m/s)
0.13 % of end value of measuring range per K (typical)
Adjustable, min. 1.7 % of end value of measuring range
Min. 1.8 K
Per IEC 62828-1
EN
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