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ADOS GmbH

MWS 897

Page  7

3.6

Menu Function RS232

This  menu  is  used  to  set  the  rate  of  transfer  and  the  data  to  be  output  on  the  serial  interface.
Connections can be made to a qualified printer or pc programm “hyper terminal”. Fixed settings: data
bits 8, stop bits 1, parity none, protocol none

3.6.1 Menu Function RS232->Output

Settting type of output:

OFF:

Serial interface is deactivated

single alarm: at every alarm or fault, ouput the relevant measuring

cyclic:

The values measured at all measuring points are output at adjustable intervals. The
intervals can be set from 1 to 30 minutes. Also alarms and faults are output as in
single alarm mode

3.6.2 Menu Function RS232->Baud

Select the transfer rate on the RS232 interface. Baud rates of 110 and 57600 are permissible.

4.

Maintenance work

The  following  maintenance  work  to  be  carried  out,  refers  to  a  twice-yearly  check  that  should  be
completed only by fully trained personnel.

The owner or operator of the system is offered the possibility of completing a maintenance contract
with  the  manufacturer,  the  ADOS  GmbH  company,  which  will  guarantee  a  smooth  and  efficient
servicing by the company's own customer service.

The maintenance work  can be divided into checking the sensor functions and checking the complete
gas monitoring unit, MWS897.

Over a period of time, the properties of the sensors can change. Therefore, on all sensors fitted to the
system, the relevant checks must be made as described in the operating instructions, to check the
calibration with zero gas and calibration gas.

Because of the changes that are possible, after establishing that the sensitivity of the sensors is not
sufficient, they must be re-calibrated or where necessary, replaced by new sensors.

The accuracy of the signals on the interface and the function of the output signals from the gas
monitoring unit, must also be checked regularly.

Summary of Contents for MWS 897

Page 1: ...ntation and Control Trierer Str 23 25 52078 Aachen FRG T E L 49 0 241 9769 0 F A X 49 0 241 9769 16 E Mail i n f o a d o s d e Internet http www ados de Est 1900 Operating Instructions Multi channel Gas Warning Unit Issue 08 15 Version 1 1 ...

Page 2: ... Menu Function Sensor 4 3 5 1 Menu Function Sensor Number 4 3 5 2 Menu Function Sensor Mute 4 3 5 3 Menu Function Sensor Limits 4 3 5 4 Menu Function Sensor Limit relay 5 3 5 5 Menu Function Sensor Buzzer 6 3 5 6 Menu Function Sensor Init 6 3 6 Menu Function RS232 7 3 6 1 Menu Function RS232 Output 7 3 6 2 Menu Function RS232 Baud 7 4 Maintenance work 7 5 Technical Data 8 6 Cable list 9 7 Terminal...

Page 3: ...g unit MWS 897 depending on the model can be operated on 230 V 110 V or 24 V voltage supplies The unit is enclosed in a plastic wall mounting housing protection class IP 54 2 Operating Summary Display and operating controls are located on the frontside of the unit Two buttons are used for the basic settings of the unit stopping the measurement cycle resetting the alarms and for performing test rou...

Page 4: ...This is indicated by a after the measuring point The first line of the display shows the actual or the average measure value the gas and the unit The second line shows the actual measuring point and the status of this sensor In case of a fault or because of special parameters being set the following messages can occur instead of the gas concentration the sensor is operating below its normal refere...

Page 5: ...always be pressed for confirmation With the SELCT key you can browse through the menu without making any modification or you can select a menu item After selecting a menu item press the ENTER key and you can change the value with the SELECT key After confirmation with ENTER the value will be saved in memory An incomplete modification instruction is not saved without pushing ENTER If no further key...

Page 6: ...me makes a restart 3 5 2 Menu Function Sensor Mute This menu item is used when it is required to switch temporarily a measuring point On or Off This function can be of use for example if a particular section area of the system has to be shut down Caution Responsibility of the system operator 3 5 3 Menu Function Sensor Limits Three limit values and characteristics can be set for each measuring poin...

Page 7: ...for other functions Select measuring point select limit amount of relay assignment factory settings Sensor 1 Limit 1 K1 Sensor 1 Limit 2 K2 Sensor 1 Limit 3 K3 Sensor 2 Limit 1 K1 Sensor 2 Limit 2 K2 Sensor 2 Limit 3 K3 Sensor 3 Limit 1 K1 Sensor 3 Limit 2 K2 Sensor 3 Limit 3 K3 etc for example to generate a group indication with relay K3 use following configuration Sensor 1 Limit 1 K1 Sensor 1 Li...

Page 8: ...sor Init Base settings for a measurement point gas format unit range Gas setting type of gas if the type of gas is not avaible edit the letters of User Format set the maximum number of digits in front of and after of the decimal place 2 1 00 0 1 2 0 00 3 0 000 Unit physical size of the measuring range for example Vol ppm LEL etc Range upper and lower measure range z B ADOS TOX CO 300 ppm MIN 0 und...

Page 9: ... out refers to a twice yearly check that should be completed only by fully trained personnel The owner or operator of the system is offered the possibility of completing a maintenance contract with the manufacturer the ADOS GmbH company which will guarantee a smooth and efficient servicing by the company s own customer service The maintenance work can be divided into checking the sensor functions ...

Page 10: ...0 10 Vol Other ranges on request Effect of temperature 3 for 20 C temperature change Ambient temperature 10 40 C Output signals Serial interface RS 232 Baud 9600 Data bits 8 Parity keine Stop bits 1 Protocol Hardware Analog output 0 5 V 3 alarm relay 230 V 450 VA 1 fault relay 230 V 450 VA Voltage supply 230V 50 Hz 115V 60 Hz optional 24V optional Power consumption 14 VA Dimensions WxHxD 225 x 180...

Page 11: ... 3 x 1 5 mm2 Sensors J Y ST Y 2 x 2 x 0 8 mm2 screened bzw J Y ST Y 4 x 2 x 0 8 mm2 screened Ex Sensors NYM ST J 4 x 1 5 mm2 screened Warning banners and flash lights NYM J 3 x 1 5 mm2 Horns NYM J 3 x 1 5 mm2 Warning banners and flash lights NYM J 5 x 1 5 mm2 Limit value K1 K2 K3 NYM O 9 x 1 5 mm2 Fault K4 NYM O 3 x 1 5 mm2 ...

Page 12: ...ADOS GmbH MWS 897 Page 10 Drawing no 890 5622 e MWS 897 with sensor GTR 196 Drawing no 890 5622 f MWS 897 with sensor ITR 498 7 Terminal schematic ...

Page 13: ...ADOS GmbH MWS 897 Page 11 Drawing no 890 5622 g MWS 897 with sensor ADOS 592 TOX Drawing no 890 5622 h MWS 897 with sensor LCTR 903 ...

Page 14: ...ADOS GmbH MWS 897 Page 12 Drawing no 890 5622 c MWS 897 24V DC Drawing no 890 5622 d MWS 897 USV ...

Page 15: ...ADOS GmbH MWS 897 Page 13 Drawing no 890 5622 i MWS 897 230V with UPS 2000 ...

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