Function And Features - Schmidt SS 30.300 Notice D'utilisation

Function and features

The unit operates to the calorimetric measuring principle and detects
the standard volume flow of operating compressed air (standard vol-
ume flow based on 1013,25 hPa and 20 °C).
Application
• Use in operating compressed air systems. The general operating
conditions of compressed air equipment apply.
• The quality class of the operating compressed air influences the
measurement accuracy.
Quality class
to DIN 8573-1
141
344
Evaluation
Display
Signal
output
26
Measuring error
± (3% of MV + 0.3% of FV)
± (6% of MV + 0.6% of FV)
• Current flow rate.
• Current consumed quantity (pulse output and counter
function).
• Current flow rate in Nm³/min or Nm³/h (4-digit display).
• Current consumed quantity in Nm³ (4-digit display between
0.000 and 4 000*10
of the value is indicated and the LED 10³ signals that it
must be multiplied with the factor 1000).
• Consumed quantity before last reset in Nm³.
While this value is indicated LED 3 is flashing.
• Current medium temperature in °C.
The display unit is defined by programming (→ page 38).
It can be changed in the Run mode temporarily.
Output 1 (3 selection options)
• Switching signal (limit value for flow rate, hysteresis or
window function, NO or NC).
• Pulse sequence for totalising meter: Output 1 provides a
counting pulse every time a set flow rate is reached
(→ page 35 / 36, parameters ImPS and ImPR).
• Switching signal for preset counter (for time-dependent or
time-independent quantity monitoring; → page 40).
Output 2 (2 selection options)
• Switching signal (limit value for flow rate, hysteresis or
window function, NO or NC).
• Analogue signal (4 ... 20 mA) for flow rate.
MV= measured value / FV = final
value of the measuring range
3 3
Nm , for values > 9 999 Nm³ 1/1000