3 Description of the instrument
10
3
Description of the instrument
3.1
Task and areas of application
Measuring block with Compac welding neck flange
The measuring block with Compac welding neck flanges enables the me-
chanical and position-accurate fixture of the electronic mass flow sensor.
The measuring block is welded into the pipelines with the Compac welding
neck flanges. The nominal width of the measuring block and welding neck
flanges must coincide with the nominal width of the pipeline (
Section 1.3).
The measuring block is designed for pipeline nominal widths from DN 65 up
to DN 250.
The operation of the pipeline without the electronic sensor assembly is made
possible with the 0699 6447 by using the interchangeable fitting. (
Section
6.1.2).
With 0699 6446, only with the optional sealing cap (
Section 3.3.1).
Electronic sensor
The sensor records the standard volumetric flow rate of the working com-
pressed air according to the calorimetric measurement principle. The meas-
urement value of the standard volumetric flow rate is calculated based on
the DIN ISO 2533 (1013 hPa, 15 °C and 0 % relative humidity).
The general operating conditions of compressed air systems apply. The air
quality of the working compressed air influences the accuracy of the meas-
urement:
Quality class acc. to
ISO8573-1
Particle – humidity - oil
Measurement inaccuracy
1-4-1
± (
3 % of meas. value + 0.3 % of meas. range final
value)
3-4-4
±
(6 % of meas. value + 0.6 % of meas. range final
value)
Analysis
•
Current
volumetric flow rate
•
Current consumption quantity (pulse output module and totaliser)
Display
•
Current volume flow in Nm³/min (Nl/min) (LED1) or Nm³/h (Nm³/h x
1000) (LED2) (4-digit display).
For nominal widths as of DN 65 Nm³/min are shown instead of Nl/min.
For nominal widths as of DN 125 Nm³/h x 1000 are shown instead of
Nm³/h.
•
Current consumption quantity in Nm³ (4-digit display between 0.001 Nm³
and 4294*10³ Nm³). For values > 9999 Nm³, 1/1000 of the measurement
value is displayed and the 10³ (LED3) display indicates that the value
must be multiplied by a factor of 1000
•
Consumption quantity before the last reset in Nm³. During the display of
this value, Nm³ (LED3) flashes
Summary of Contents for 0699 6446 Series
Page 2: ...2...
Page 7: ...1 Introduction 7 0699 6446 Standard 1 1 10 1 20 1 30 1 40 3 3 10 3 20 1 50 1 12 1 12 1 11...
Page 41: ...Notes 41...
Page 42: ...Notes 42...
Page 43: ...Notes 43...
