Chell Q-Daq Page 19 Installation And Operating Manual Download

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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’

Saves the Rezero values to the eeprom

‘Reset Zero’

Clears the span calibration on all channels

Table 5.8, Zero Coefficients controls

Summary of Contents for Q-Daq

Page 1: ...sham Norfolk NR28 0AJ ENGLAND Tel 01692 500555 Fax 01692 500088 Q Daq Pressure Scanner Acquisition System INSTALLATION AND OPERATING MANUAL Cover models Q Daq PoE and Q Daq DC e mail info chell co uk...

Page 2: ...fied in this manual may impair the user s protection 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 ma...

Page 3: ...ing up the Q Daq 7 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...

Page 4: ...oes have the CAN and hardware trigger facility and is powered by a DC voltage of 8 to 25 VDC Both devices have the ability to output absolute pressures or differential pressures When differential pres...

Page 5: ...uto Negotiation TCP UDP protocols supported 2 5 Environmental specification Operating temperature range 40 C to 90 C Storage temperature range 40 C to 90 C Maximum Relative humidity 95 at 50 C non con...

Page 6: ...Page 5 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 7: ...umatic Connections For Details on the SQDC interface please refer to the SQDC data SL00914 pdf sheet and manual 90014723 pdf Hot plugging the power to the Q Daq at the connector can cause permanent da...

Page 8: ...e unit to Chell Instruments 4 2 Configuring the Q Daq The Q Daq is designed to be configured by using the embedded web server Here all the product variables may be changed including i p address CAN i...

Page 9: ...econd set and so on When the hardware trigger is activated the Q Daq will wait for the first pulse The time that this first pulse is generated can be measured by the user and therefore the time of the...

Page 10: ...rameters such as data streaming rates and Device addresses The unit s function may be checked and demonstrated using Live Data to show the Q Daq s calibrated output Advanced provides setup for the all...

Page 11: ...Page 10 Figure 5 1 Main Setup page...

Page 12: ...the configured scanner full scales and total channels The function of the common controls is detailed in the subsequent table Table 5 1 Table 5 1 Common sidebar control functions Figure 5 2 Sidebar C...

Page 13: ...16 bit LE 16 bit BE for all protocols and eng units as an extra option for TCP and UDP Comms Apply button Applies the changes made to the local settings memory Pressure Input Average Samples Displays...

Page 14: ...ed to Q Daq on the user s network Subnet Subnet mask as set on the user s network Local port Local port of the device Apply TCP Applies the settings to the local memory Table 5 3 TCP Comms group setti...

Page 15: ...mmands over CAN and whether an acknowledgement of these user commands is sent on the next higher message number Data may be transmitted on either multiple messages or alternatively on a single message...

Page 16: ...s displayed on the top right of the live data page for convenience The type of value shown in the labels may be selected by means of the option buttons in the righthand frame These are as follows Diff...

Page 17: ...e used then this value can be set at 0 to speed up startup time Auto Broadcast UDP message on boot If checked auto broadcasts a UDP message on port 10001 on startup which details the Q Daqs serial num...

Page 18: ...essure is required Any channel between 1 and 16 can be used as the reference channel Pressure input impulse filter Applies median filter the data it will remove single impulse noise events in the pres...

Page 19: ...te 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 Saves the Rezero values to the...

Page 20: ...le which will place a timestamp at the beginning of all the channels and every channel which will read the timestamp for every channel It should be noted that the latter 2 options will reduce the maxi...

Page 21: ...an annual basis and Chell Instruments Ltd provides a fully traceable facility for this purpose 6 3 Adjustment There are no user adjustments in the instrument The user is strictly forbidden from removi...

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