ECOLINE 7823 Quick Start Manual Download Page 5 | Manualshive

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ECOLINE 7823 Quick Start Manual Download Page 5

ELECTRICAL CONNECTIONS

Housing Connector: Amphenol Ecomate C016 30C006 100 12
Mating Connector: Binder 99-4218-00-07
(Mating Connector supplied with each product)

Output pins 5 and 6 are both referenced to the supply GND (pin 2). Due to high current flow in the supply GND, when
monitoring the 0-10V

DC

output (pin 6) it is recommended that a separate GND wire for the measurement system is taken

from PIN 2. This removes errors due to voltage drops in the power supply connections.

SYSYEM BLOCK DIAGRAM

PIN

Description

1

24V

DC

± 10%

2

GND

3

Calibrate

4

Cycle

5

4-20mA/RS232 Tx

6

0-10V

DC

/RS232 Rx

CENTRE

Housing/Probe Earth

7823

Oxygen Analyser

ECO

line

7823 Oxygen Analyser

E instruments

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Summary of Contents for 7823

Page 1: ...ctronics enclosure Storage 10 to 85 C Operating 10 to 85 C Temperature limits permissible gas temperature at sensor tip Operating Standard Temp 100 to 250 C High Temp 100 to 400 C Gas flow rate 0 to 10 m s Weight 450g Incidental permissible acceleration 30g Repetit ive permissible acceleration 5g Sealing Rating IP65 APPLICATIONS Combustion control including oil gas and biomass boiler applications ...

Page 2: ...em GND A digital 3 3VDC logic output cycles at the same frequency as the electrochemical pumping action of the oxygen sensing cell during normal operation thus providing a real time sensor health check if the output ceases to cycle the sensor has entered a start up or error state This provides fault proof operation The digital output is also used during the calibration process to indicate the inte...

Page 3: ...action time adaptive output filtering in normal air 1 s Notes 1 Prolonged operation below 0 1 O2 can damage the sensing element 2 Assuming barometric pressure remains constant 3 As the O2 sensor measures the partial pressure of oxygen PPO2 within the measurement gas deviations in the Barometric Pressure BP from that present during calibration will cause readout errors proportional to the change Fo...

Page 4: ...LINE DRAWING AND MOUNTING INFORMATION Mounting holes accessible on removal of housing lid PCB LAYOUT REMOVE HOUSING LID TO VIEW 7823 Oxygen Analyser ECOline 7823 Oxygen Analyser E instruments Page 4 of 12 ...

Page 5: ...t flow in the supply GND when monitoring the 0 10VDC output pin 6 it is recommended that a separate GND wire for the measurement system is taken from PIN 2 This removes errors due to voltage drops in the power supply connections SYSYEM BLOCK DIAGRAM PIN Description 1 24VDC 10 2 GND 3 Calibrate 4 Cycle 5 4 20mA RS232 Tx 6 0 10VDC RS232 Rx CENTRE Housing Probe Earth 7823 Oxygen Analyser ECOline 7823...

Page 6: ...f the PC and Rx goes to Tx of the PC The 7823 communicates via standard COM port settings that are default on most PCs and many other RS232 compatible devices If however communication problems are occurring use the settings below to configure the PC or device COM Port ECOline 7823 Oxygen Analyser E instruments Page 6 of 12 ...

Page 7: ... as both an averaged and raw value The averaged values give a stable output with the amount of averaging user variable whilst the raw un averaged values allow the user to detect sudden oxygen changes The averaged value is the measurement output on both the 4 20mA and 0 10VDC outputs The sensor Td value is the measure of the partial pressure of oxygen in the measurement gas The O2 concentration is ...

Page 8: ...ave The new averaging value is now stored in memory This value is retained on power loss Adjusting the Minimum and Maximum Ranges of the Analogue Outputs 4 20mA and 0 10VDC The 7823 is factory default to output a range of 0 25 O2 via its two analogue outputs This range can be expanded to 0 100 O2 as described on Page 7 When the unit is reconfigured to output 0 100 O2 the user also has the option t...

Page 9: ...ins if powering from cold Apply GND to the CALIBRATE input PIN 3 for a minimum 5s or until the CYCLE output and green LED blink at a steady 1Hz Remove GND from PIN 3 Manual Calibration is now initialised Adjust the MANUAL CAL POT until the output equals the correct value of the calibration gas concentration Re apply GND to PIN 3 for a minimum 5s During the 5s the CYCLE output LED will blink rapidl...

Page 10: ...er droplets are likely the sensor should be protected from water falling directly onto the very hot sensor cap as this can cause massive temperature shocks to the cell and heater Popular methods include a hood over the sensor cap or for the sensor to be mounted in a larger diameter cylinder At a very minimum the sensor cap should be angled downwards in the application as this will deflect any fall...

Page 11: ...e to these metal vapours must be avoided 3 Halogen and Sulphur Compounds Small amounts 100ppm of Halogens and or Sulphur compounds have no effect on the performance of the oxygen sensor Higher amounts of these gases will in time cause readout problems or especially in condensing atmospheres corrosion of sensor parts These gases often outgas from plastic housings and tubes when hot Investigated gas...

Page 12: ...product could result in personal injury Failure to comply with these instructions could result in death or serious injury CAUTION Do not exceed maximum ratings and ensure sensor is operated in accordance with all requirements of AN0043 Failure to comply with these instructions may result in product damage It is the customer s responsibility to ensure that this product is suitable for use in their ...

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