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Micatrone MG-4000-R2 Operating And Installation Manual

Oxygen (o2) transmitter with monitoring
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catrone
Oxygen (O2) transmitter with monitoring
Measuring
Out of range
Calibration
Relay 1
Relay 2
High O -content
2
Low O -content
2
Error

USE

MG-4000-R2 is designed to measure the O
tent in flue gases from oil burners, gas burners
and biomass-fired boilers. MG-4000-R2 can, to-
gether with a controller, optimize the air/fuel ratio.
The result is the highest possible firing efficiency
can be obtained and sustained over time indepen-
dent of changes in the fuel and combustion air.
The probe (MG-4000-R2/S) is installed in the flue
gas duct directly after the boiler. The tip of the pro-
be is easy to adjust so that it is positioned in the
centre of the flue gas zone. No special gas is re-
quired for calibration, this is done directly in the
surrounding air. Installation and use are as easy
as using a standard temperature sensor.
®
®
AB MICATRONE
O2-cont
O -transmitter
2
-con-
2
Operating and Installation manual
Mi-262gb / 2017-04-03
PGM
MG-4000-R2
The O
-transmitter consists of two parts: the probe
2
and the central unit. The probe houses a sensor of
zirconium dioxide (ZrO
amplifier and generator for the ion pump. The cen-
tral unit houses the electronics for measuring the
sensor signal, analogue outputs, relay contacts for
the alarm outputs, control panel and the power
supply. All functions in the central unit are mana-
ged and monitored by a microprocessor.
Current measurement values, error indications
and set parameters are all presented on the inte-
grated display.
8 LEDs provide a quick indication of the operating
status.
MG-4000-R2
Version 1.3x
3.1 %
ESC
), heating element, signal
2

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Summary of Contents for Micatrone MG-4000-R2

  • Page 1: Use

    All functions in the central unit are mana- The probe (MG-4000-R2/S) is installed in the flue ged and monitored by a microprocessor. gas duct directly after the boiler. The tip of the pro-...

  • Page 2: Table Of Contents

    -content ....10 Central unit MG-4000-R2 ..19 Nernst ....10 Measuring probe MG-4000-R2/S .

  • Page 3: Measurement Principle

    MEASUREMENT PRINCIPLE At higher temperatures (>500 °C) stabilised zirco- The time of a pump cycle (tp) becomes directly nium dioxide (ZrO ) is a solid electrolyte for oxy- proportional to the surrounding partial pressure gen. This can be used in two ways: from the oxygen (P ).

  • Page 4: Relationship Between O -Content In Dry And Wet Flue Gases

    O -content flue gases Relationship between O -content in dry and wet flue gases MG-4000-R2, which has its probe mounted in the Dry flue gas flue gas duct, measure the O -content in wet flue gases. Portable O -measurement instruments ex-...

  • Page 5: Probe

    Probe seperate the probe galvanically from protective earth (ground) in the boiler/flue-gas duct which When installing the probe it is important to select cor- could interfere with the measuring. Check that no rect placement. It should be easy to remove the pro- electrical connection is between the probe and be from the flue gas duct and easy to connect the boiler/duct by measuring the resistance between...

  • Page 6: Oxygene Sensor Cross Sensitivity

    OXYGENE SENSOR CROSS SENSITIVITY Cross sensitivity with other gases: The oxygen sensor measures partial oxygen pressure. Gases or chemicals that will have an influence on the life of the sensor or on the measuring results are: Combustible Gases Reducing Atmospheres Small amounts of combustible gases will be bur- Long time exposure to reducing atmospheres may ned at the hot Pt-electrode surfaces or Al...

  • Page 7: Electrical Connection

    Signals to the probe Voltage supply Term Description Signal MG-4000-R2 is fed with 230 VAC, 50 Hz on termi- Positive supply to the +7 Volt DC, 2.5 mA. nals 1 (neutral) and 3 (phase). The supply should probe’s electronics. incorporate a circuit-breaker to facilitate servicing.

  • Page 8: Connection Diagram For Central Unit And Probe

    Connection diagram for Central unit and Probe B RS-485 Current loop Output signal 2 0/2...10 Volt Ri min 50 kohm Output signal 1 0/4...20 mA RL max 500 ohm -5 Volt +7 Volt Relay 2, 230 VAC Relay 1, 230 VAC Line AC15 AC16...

  • Page 9: Translation Chart Mg-4000 // Mg-4000-R2

    Translation chart MG-4000 // MG-4000-R2...

  • Page 10: Functions

    HIGH ted measurement range an orange LED is lit on the control panel. 15 Source O2-cont ERROR MG-4000-R2 has visual alarms (red LEDs on the 16 Level 0,0...99,9 control panel) for specific high and low O -content. 17 Hysteresis 0,1...99,9 The limits are stated in % O -content.

  • Page 11: Communication

    COMLI COMLI 35 Baud 600 b 4800 b 1200 b If it is the first time that MG-4000-R2 has been 2400 b 4800 b started the settings for the selected measurement 9600 b range and output signals should be checked.

  • Page 12: Programming

    3.1 % Prog.ver. 1.30 Keypad Programming a parameter MG-4000-R2 has a keypad with four keys, mar- ked, 6 5, PGM and ESC. Programme menu The arrow keys, 6 5, are used to scroll The program menu includes all parameters and between different parameter groups, para- measuring values that are accessible.

  • Page 13: Programming A Value

    Rele- when the ESC key is pressed repeatedly until the ase the buttons. default start menu is shown. MG-4000-R2 Programming a value FUNCTIONS-MENU Parameters with a numeric value (integers and de- cimal values): The first function is shown in the display.

  • Page 14: Default Settings

    Default settings Default settings Communication Factory Par.no: Description Range Value Par.no: Description Range Value Communication Internals 32 Address 1...247 21 0 Prog.ver. 0,00...9,99 1,00 33 Location 0...32767 0 O2-measuring 1 Range 0..10% 34 Protocol COMLI COMLI 0..5% 0..10% 35 Baud 600 b 4800 b 0..20%...

  • Page 15: Indications

    Par.no: Description Range Value Measuring values 100 O2-cont. 0,0...99,9 Top row Bottom row 101 Nernst -0,50...4,50 AB MICATRONE -content 102 Current 0,00...3,00 Voltage Current 103 Voltage 0,00...9,99 104 Temp. 550...850 Status Relay 1, Function Status Relay 2, Function 105 Reg.

  • Page 16: Probe Calibration

    700 °C. the mains supply has been connected to Calibration is performed from the function menu, MG-4000-R2 the unit will wait until the time remai- see page 16. When the following is displayed: ning has elapsed before continuing with the calibration.

  • Page 17: Limits For Calibration

    Make sure that the tip has had time to cool to room temperature. MG-4000-R2 should be recalibrated for the first time after about 2 months, then roughly once per Completes...

  • Page 18: Trouble Shooting

    0...4 Volt for some MG-4000-R2 is measuring O -content in excess of time. Restart MG-4000-R2 to try to reset the error. the value in parameter 2. Check the connections between the central unit and the probe. Try another probe.

  • Page 19: Technical Data

    Relay outputs Max. load: 230 VAC, 2A Outputs Signal range: 0/4...20 mA 500 W Max. load: Volt Signal range: 0/2...10 Volt DC Min. load: 50 kW Data communication (optional) Interface: RS-485 or. RS-232 Protocol: Comli Figur 8 Dimensions measuring probe MG-4000-R2/S...

  • Page 20: List Of Parameters

    0...32767 34 Protocol COMLI 35 Baud 600 b 1200 b 2400 b 4800 b 9600 b 36 Protect AB MICATRONE Telephone: +46 8-470 25 00 Åldermansvägen 3 Fax: +46 8-470 25 99 SE-171 48 SOLNA Internet: www.micatrone.se SWEDEN E-mail: info@micatrone.se...

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