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Instruction Manual 

ExTox Bio-Compact 

 

 

BA_Bio-Compact_e_2015-10-22.doc 

 

Page 9 of 12 

 

Calibration is done in five phases:  

Phase  Indication on Display    Course 

RINS AIR 

The system is flushed with air for three minutes 

READ ZERO 

The  gas  suction  pump  is  switched  off.  The  system  waits  

one minute until stabilisation of measured values. Then 

the measured values are stored (zero point values for CH

4

H

2

S or 20.9 % (v/v) for O

2

). 

RINS GAS 

The gas suction pump is switched on again and the system 

is flushed with connected test gas for four minutes.  
Attention: Only during this phase the test gas bottle has 

to be connected and the test gas has to be applied to the 

system. The test gas has to be applied pressure less. It 

has  always  to  be  ensured  that  an  adequate  test  gas  vol-

ume stream is provided, that means an application of test 

gas has to be set which corresponds to the one in measur-

ing operation

3

. This is to avoid that air is additionally 

sucked in and dilution of the test gas resulting from this 

falsifies calibration / adjustment. 

READ SENS 

The measured gas pump is switched off and batch meas-

urement is done within two minutes. 

READY 

Calibration is completed and a plausibility check of the 

new values for zero point and sensitivity takes place. Off-

set  for  the  zero  point  may  not  exceed  ±  2  mA.  The  gain  

factor  for  sensitivity  has  to  be  between  0.5  and  2  (see  

comments on adjustment of the control units). Calibration 

values outside these limits are rejected, in the calibration 

menu  the  message  "ERROR"  is  issued  after  completed  

calibration and the previous settings are kept. 
Attention:  The message "ERROR" for channels with 

measuring components which are not part of the test gas 

does not indicate a malfunction of the measuring channel. 

These measuring channels will be calibrated and adjusted 

later  on  or  have  already  been  calibrated  and  adjusted  on  

application of other test gases. 

 
When using several test gases please change now the bottle and start another calibration cycle 

by pressing START. 
Calibration is definitely completed with ESC. 

                                         
 

3

 

Depending on type the necessary test gas volume stream may be considerably above the indicated volume stream.

 

Summary of Contents for Bio-Compact

Page 1: ...Instruction Manual ExTox Biogas Analyser Bio Compact...

Page 2: ...Page 2 of 12 BA_Bio Compact_e_2015 10 22 doc...

Page 3: ...h reliability due to modern sensor techniques and consequent interpretation acc to the requirements of the regulations and standards valid for industrial application The Bio Compact combines all neces...

Page 4: ...ays and Digital Inputs 8 5 1 3 Calibration and Adjustment 8 5 2 Transmitter Module 10 5 2 1 Replacement of a Transmitter Module 10 6 Operation of Bio Compact 11 6 1 Flow rate monitoring 11 6 2 Flame A...

Page 5: ...formance of work when mainte nance and repairs are done by them On receipt of goods please take care that packing and consignment are not damaged and the goods supplied correspond to the articles desc...

Page 6: ...Detection Systems Furthermore they are in conformity with the Euro pean Directives 94 9 EC ATEX 2004 108 EEC EMC and 2006 95 EEC LVD 2 3 Indications and Facilities The control unit ET 4D2 covering th...

Page 7: ...t changes to the phase flushing and starts the measurement later on For channels in TIMER Mode all measured values alarms and outputs remain frozen on the latest value of the previous measuring phase...

Page 8: ...Channel Configuration In the menu the mode TIMER is factory sided activated Attention Changing of these setting should in no way be done by the user Changed measur ing functions may otherwise lead to...

Page 9: ...resulting from this falsifies calibration adjustment 4 READ SENS The measured gas pump is switched off and batch meas urement is done within two minutes 5 READY Calibration is completed and a plausibi...

Page 10: ...justed It has the same warranty as a new module In case you return the replaced module you will get a credit note for it Replacement is done in few steps 1 Release access level 3 on the control unit s...

Page 11: ...rotected against weather conditions and bigger climatic fluctua tions In general we do not recommend an installation outside as in principle measuring accuracy and lifetime are influenced in a negativ...

Page 12: ...ervoltage All connections are inside the housing of the control unit ET 4D2 accessible via the cable glands at the bottom of the housing Connection of transmitters and additional devices gas suction p...

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