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Summary of Contents for SEFRAM DBX2000
- Page 1 AIR FLOW RATE CALCULATOR SUPPLY VOLTAGE Technical Notice FI 72.0190.1021E Page 1 of 12...
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Page 2: Table Of Contents
AIR FLOW RATE CALCULATOR SUMMARY: DESCRIPTION: The DBX2000 is a device for the calculation of the air flow rate in a Page duct using a differential pressure measurement (Pitot tube, - DESCRIPTION diaphragm, Venturi meter) corresponding to the dynamic pressure. -
Page 3: Presentation Of The
SUPPLY VOLTAGE OPERATION OF THE MENUS: The different operating values of the DBX2000 are presented under the form of two menus and are accessible thanks to the navigator. The « measurements » menu enables the measurements and the results of the calculations of the DBX2000 to be displayed. -
Page 4: Menus
AIR FLOW RATE CALCULATOR MEASUREMENTS MENU: - movement from one step to the next is made with the « valid » button - from any step of this menu, the « right » button gives access to the « parameter » menu (1) Display of the measured differential pressure (=dynamic pressure) : - the measurement is averaged over the two last seconds... -
Page 5: Menu Parameters
AIR FLOW RATE CALCULATOR PARAMETERS MENU: - movement from one step to the next is made with the « valid » button - access to the parameter modification is made with the « right » button - after modifying a parameter, you come back into this menu - from any step of this menu,... - Page 6 AIR FLOW RATE CALCULATOR (1) section display: - if « right » button: - choice of the section type « circular » or « rectangular » - press « valid » button - if « circular » type: - input the diameter from 0.050 to 3.000 metres - press «...
- Page 7 AIR FLOW RATE CALCULATOR (6) and (7) display of the analogue output scales 4-20mA 1 and 2 XXXX is the corresponding value for 20mA output YYYY is the unit of the output Comment: 4mA output corresponds to the value 0 - if «...
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Page 8: Operation Of The
AIR FLOW RATE CALCULATOR OPERATION OF THE ALARMS: Mini air flow rate alarm: If the calculated air flow is less that the set value for longer than the set time delay: - the mini flow alarm appears - the K1 led is lit up - the K1 relay is at rest (contact between 11 and 12) If the circulated air flow rate is greater than the value set for longer than the set time delay: - the mini air flow alarm disappears. -
Page 9: Characteristics
Take the necessary precautions to satisfy the device characteristics (humidity, maxi pressure, etc.). Do not remove the front face of the DBX2000 to connect (only the cover of the connections) For the connection of the signals 4-20mA, it is recommended that you use a shielded cable and do not follow the routing of the power cables. -
Page 10: Connections
AIR FLOW RATE CALCULATOR CONNECTIONS: In accordance with the device configuration, certain parts cannot be installed. 1) Electrics: Bottom card: user connections. This card is accessible directly under the housing terminal cover. Only if version power supply 24V DC At rest, de-energised: contacts between C and NC (11 and 12; 21 and 22; 31 and 32 ; 41 and 42) When energised, the relays toggle: contacts between C and NO (11 and 14;... -
Page 11: Space Requirements
AIR FLOW RATE CALCULATOR SPACE REQUIREMENTS AND FIXINGS: Technical Notice FI 72.0190.1021E Page 11 of 12... -
Page 12: Notice
« zero » (see CALIBRATION). WARRANTY: The DBX2000 has a 2-year warranty (equipment returned to our workshops). The warranty does not apply in the following cases: - breakage through dropping or knocks to the unpackaged products, - damage caused by abnormal use (connecting error, surge, etc.)
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