SICK FLOWSIC100 User Manual

Product Description
FLOWSIC100 · Operating Instructions · 8012513/YSA5/V2-1/2016-07 · © SICK Engineering GmbH 45
Subject to change without notice
Calculating the volume flow in standard state
The volume flow can be converted to the standard state as follows:
Q
act.
: Volume flow in operating state
Q
std..
: Volume flow in standard state
F: Humidity in percentage volume, parameter normally set as default value typical for the
system.
If an optional analog module is used as an analog input for connecting a separate humidity
monitor, the volume flow can be scaled with the current installation values.
p_duct: Absolute pressure in duct, normally set as parameter as fixed/default value typical
for the system.
If an optional analog module is used as an analog input for connecting a separate pressure
sensor, the volume flow can be scaled with the current installation values.
p_normal: 1013 mbar
T_duct: Duct temperature (in K): Here in FLOWSIC100, either a permanent default
temperature calculated with ultrasound measurement or read via the optional analog input
(for greater accuracy) can be selected for use.
T_normal: Standard temperature. In Europe 273 K, in USA 293 K
2.4.2 Temperature calibration
The temperature measurement must be calibrated for exact calculation of the flue-gas
temperature with the FLOWSIC100. There are only two cases where this calibration is not
necessary:
● Exact knowledge of the sound velocity in the flue gas under standard conditions
(1013 mbar, 0
°C), as is the case with air, for example, (331 m/s)
● Exact knowledge of the active measuring path.
Calibration is carried out using a reference measurement with a separate temperature
sensor (for example, Pt100) with at least 2 different temperatures (calculating and
entering the coefficients
 p. 151, 4.3.6).
Q
i.N.
= Q
i.B.
· ( ) · ( )
100 - F p_duct · T_normal
100 p_normal · T_duct

SICK FLOWSIC100 Specifications

General

Brand	SICK
Model	FLOWSIC100
Category	Measuring Instruments
Language	English