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Q-Daq
Pressure Scanner
Acquisition System
INSTALLATION
AND
OPERATING MANUAL
Cover models : Q-Daq PoE and
Q-Daq DC
info@chell.co.uk
e-mail:-
Visit the Chell website at:
http://www.chell.co.uk
Chell Instruments Ltd
Folgate House
Folgate Road
North Walsham
Norfolk NR28 0AJ
ENGLAND
Tel:
01692 500555
Fax:
01692 500088
900223-1.0
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Summary of Contents for Chell Q-Daq
- Page 1 Folgate House Folgate Road North Walsham Norfolk NR28 0AJ ENGLAND Tel: 01692 500555 Fax: 01692 500088 Q-Daq Pressure Scanner Acquisition System INSTALLATION OPERATING MANUAL Cover models : Q-Daq PoE and Q-Daq DC info@chell.co.uk e-mail:- Visit the Chell website at: http://www.chell.co.uk 900223-1.0...
- Page 2 Chell Document No. : 900223 Issue 1.0 ECO : 03255 Date: 1/8/2019 Chell’s policy of continuously updating and improving products means that this manual may contain minor differences in specification, components and software design from the actual instrument supplied.
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Page 3: Table Of Contents
4.2 Configuring the Q-Daq ............................. 7 4.3 Re-zeroing the Q-Daq............................. 7 4.4 Hardware Trigger (Q-Daq DC only) ....................... 8 4.4.1 Hardware Trigger Input (Q-Daq DC only) ....................8 4.4.2 Timing Information (Q-Daq DC only) ......................8 4.4.3 Software Control ............................8 5 Q-Daq Configuration Webserver .................. -
Page 4: Description
The Q-Daq is a self-contained pressure scanner that acquires and transmits pressure data to a host via Ethernet or a CAN bus. The Q-Daq is mechanically based on the Chell SQDC range giving the user the ability to connect it to an existing SQDC loom or, with the appropriate mating half, connect the Q-Daq to flexible or solid tubing. -
Page 5: Specifications
Specifications 2.1 PoE Specification 802.3af/bt Class 3 10W maximum 2.2 Power Supply (Q-Daq DC Only): Line voltage: 8-25 VDC Absolute Max. Line voltage 25 VDC Consumption: Max 1VA 2.3 CAN specifications (Q-Daq DC only): CAN type 2.0B CAN baudrate Configurable from 1M, 500K, 125K and 100K. -
Page 6: Heater Specifications
2.7 Heater Specifications Controlable between -55 and 70°C (via Webserver). 7.5 watts power. 2.6 Dimensions 2.6.1 Q-Daq-PoE Page 5... -
Page 7: Installation And Interconnections
MDX3- MDX2+ MDX2- Hot plugging the power to the Q-Daq at the connector can cause permanent damage to the unit. Always switch the power at the power supply source 3.2 Q-Daq Pneumatic Connections For Details on the SQDC interface, please refer to the SQDC data (SL00914.pdf) sheet and manual (90014723.pdf) -
Page 8: Operation Of The Instrument
Upon power up, the blue LED will light constantly while the Q-Daq boots up. This will typically take around 2 seconds. When the Q-Daq has finished booting, the blue LED will flash at a constant rate to show that the system is running (unless auto hardware trigger enable has been set – see later). -
Page 9: Hardware Trigger (Q-Daq Dc Only)
Ethernet Ethernet The hardware trigger can also be set to auto enable on power up which means that the Q-Daq will not go into free-running mode after initialisation and will instead wait for the first hardware trigger pulse. In this instance the blue LED will not flash at a constant rate after initialisation and will actually turn off. -
Page 10: Daq Configuration Webserver
5 Q-Daq Configuration Webserver 5.1 Introduction. The Q-Daq web Configuration provides the means of setting up and demonstrating the Q-Daq unit from a standard PC with an Ethernet port and browser. The webserver is divided by tabs into five areas of functionality, namely 'Setup’, 'Live Data', ‘Advanced’, ‘Timestamp’... - Page 11 Figure 5.1, Main Setup page Page 10...
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Page 12: Common Controls Sidebar
The function of the common controls is detailed in the subsequent table (Table 5.1) Control Function Resets the Q-Daq , similar to power cycling the device. Use to activate 'RESET' button new settings and/or rebuild calibration tables. 'Rezero' button Starts a Q-Daq rezero operation. -
Page 13: The 'Setup Parameters' Page
5.3 The 'Setup Parameters' Page 5.3.1 Introduction The 'Setup Parameters' page shows all of the Q-Daq's main operating parameters. Setup Parameters is divided into different categories by function, and each category is detailed separately in the following. 5.3.2 Data Streaming The ‘Data Streaming’... -
Page 14: Tcp Parameters
(of ‘x’ number of channels) is packed as a separate UDP packet with a four-byte representation of the Q-Daq serial number at the start of the packet. These are attempted to be sent out at the required rate but with no checking for reception or validity of data. -
Page 15: Can Parameters (Q-Daq Dc Only)
Figure 5.5, UDP Comms group ‘Local IP address and subnet’ This displays the IP address of the Q-Daq, this is the same as in the TCP comms section. ‘Local port’ Local port of the device. ‘Remote UDP IP address’. Address of remote connection to Q-Daq. If set then the Q-Daq can be set to auto stream data to that remote host on boot up (after initialisation) ‘Remote UDP port.’... -
Page 16: Live Data' Page
Figure 5.6 shows the 'Live Data' page of the webserver, for a 16-channel pressure scanner. Figure 5.7, Live Data Page The live data page is a means to demonstrating the correct operation of Q-Daq and testing the unit's calibration. A measurement for pressure and temperature is shown for each channel. -
Page 17: Advanced' Page
The advanced tab contains extra options that users may find useful for more detailed configuration. 5.5.1 Advanced communication settings The Q-Daq has extra communication variables that may help get a more precise connection between the Q-Daq and the PC. Figure 5.8 Advanced comms group... -
Page 18: Miscellaneous
‘Heater control off value’ temperature is below this temperature. The ‘control off’ value works in a similar way meaning a ‘control on’ value of 20°C and a ‘control off’ value of 25°C, the Q-Daq will maintain a temperature between 20 and 25°C ‘Apply’... -
Page 19: Zero Coefficients
5.5.4 Zero Coefficients The Zero coefficients for the linear cal. are displayed as a separate group at the bottom of this page. These values are the current zero offsets gained when the device is rezeroed. Table 5.10 Span and Zero Coefficients group ‘Save Rezero’... -
Page 20: Timestamp
Timestamp This page allows the user to edit the timestamp settings of the Q-Daq. This timestamp will allow the user to get millisecond level accuracy timestamps on the data packets. If the timestamp is enabled it will have an effect on the maximum transmission rate. -
Page 21: Service And Calibration
6. Service and Calibration 6.1 Service There are no user serviceable parts inside the instruments. Should any difficulties be encountered in the use of the Q-Daq, it is recommended that you contact Chell Instruments Ltd for advice and instructions. 6.2 Calibration Calibration is recommended on an annual basis and Chell Instruments Ltd.
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