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Upon  activation  of  the  central  unit  a  list  of  information  is  automatically  displayed  on  the  display 
unit:  software  version,  maintenance  access  code,  pre-programmed  alarm  thresholds,  stabilisation 
time sheet, etc. and then the measurement continuously supplied by the sensor. 
 

1.1.

 

Measuring channel display 

The  MX  15  central  unit  continuously  displays  the  measurement;  however,  by  simultaneously 
pressing  the  +  and  –  keys  of  the  front  keyboard,  the  measurement  will  be  replaced  with  an 
interrupted line on the display unit. 
To return to the measurement display, press one of the two keys, + or - . 
To return to normal operation, simultaneously press the + and – keys. 

 

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Reminder: for safety purposes, only authorized and trained people are allowed 
to use the following menus. 

 

2.1.

 

Menu viewing 

To exit the normal operating mode and access the menu list, use the front keyboard: 
 

-

 

press the MENU key 

-

 

use + / - and ENTER keys, validate the standard access code « 1000 » 

-

 

use + or – key to view the available menus, such as:  

PROGRAMMING (PRG) 
USI (factory calibration) * 
INITIALISATION (INI) 
CODE (COD)  
BUZZER (BUZ) 
TEST (TST) 

 
*  the  USI  menu  is  not  detailed  below  because  it  is  only  reserved  for  the  manufacturer: 
never use it without previous training! 

** * * 

 

2.2.

 

Menu validation 

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display the desired menu as indicated in the previous chapter 

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validate this menu by pressing the ENTER key 

 

Summary of Contents for MX15

Page 1: ...I IN NS ST TA AL LL LA AT TI IO ON N A AN ND D O OP PE ER RA AT TI IN NG G I IN NS ST TR RU UC CT TI IO ON NS S Ref NPM15GB...

Page 2: ...uired particularly for electrical installation and assembly connections service lines Any modification of the equipment as well as use of unauthorized parts will result in cancellation of any warranty...

Page 3: ...ECIFIC USE C C L L A A U U S S E E S S C C O O N N C C E E R R N N I I N N G G P P R R O O P P E E R R T T Y Y Drawings plans specifications and information included in this document contain confident...

Page 4: ...ly 230 Volts 115VAC on request 11 2 2 2 Power supply 24 VDC protection through F8 can be connected on terminals 0 and 24V as indicated in the wiring examples at the end of the manual 11 2 3 Measuring...

Page 5: ...otentiometers A motherboard including all system components power supply display relays and connectors A front face with tactile keys I I I I T T e e c c h h n n i i c c a a l l s s p p e e c c i i f...

Page 6: ...ammable Display front Type LCD screen 4 digits 7 segments 3 characters 14 icon segments 4 LEDs Description of unit and gas programmable by user in a list 3 characters edited by user Keyboard through t...

Page 7: ...h information provided to external units The site manager where the equipment is installed should take into consideration and comply with the information in the following paragraphs Refer to the provi...

Page 8: ...l unit in configuration 0 at 100 LEL The following curve provides a response to the central unit regarding the measured value and fault processing based on the value of the input current supplied by t...

Page 9: ...n attended area control centre console room control room etc and in a less humid no condensation and temperate environment see chapters 2 1 and 3 2 2 C Ce en nt tr ra al l u un ni it t e el le ec ct t...

Page 10: ...should be wired on the two terminals L orange and N blue as indicated in the wiring examples at the end of manual 2 2 2 Power supply 24 VDC protection through F8 can be connected on terminals 0 and 2...

Page 11: ...e in positive safety negative upon request and potential free REL1 terminals match the relay 1 contacts alarm 1 REL2 terminals match the relay 2 contacts alarm 2 The relay contacts can be used normall...

Page 12: ...replaced with an interrupted line on the display unit To return to the measurement display press one of the two keys or To return to normal operation simultaneously press the and keys 2 2 M Me en nu u...

Page 13: ...larms 1 manual MAN if the gas concentration again becomes lower than the preset alarm threshold this alarm must be acknowledged manually by pressing the acknowledgment key 2 or automatical AUT if the...

Page 14: ...changes the access code for various menus 1000 in standard upon shipment of equipment display the CODE menu and key validate it enter display current code indicate the new code using the and keys vali...

Page 15: ...s concentration is correct by reading the display unit Otherwise adjust the sensitivity using a S potentiometer Disconnect the standard gas cylinder Wait for the return to zero on the display unit Pre...

Page 16: ...intended to be a measure of the accuracy of the instrument Industrial scientific further recommends that a full instrument calibration be performed using a certified concentration s of calibration ga...

Page 17: ...onal use of natural resources MX15 has to be the object of a selective collection for the electronic equipments and cannot be scrapped with the normal domestic waste The user thus has the obligation t...

Page 18: ...gment 1 3 relay contact outputs potential free NO or NF based on position of jumpers next to relays DEF RL1 RL2 Connector of first sensor with 2 wires Example of connection between a MX15 central unit...

Page 19: ...0 TWIN type sensors L N T MAINS 230VAC 0 24V Remote acknowledgment 1 2 3 Connector of first sensor with 3 active wires relay contact outputs potential free NO or NF based on position of jumpers next t...

Page 20: ...ring 1 2 3 1 2 3 Example of connection with an EXPLO or TOXIC sensor with 3 active wires L N T MAINS 230VAC 0 24V relay contact outputs potential free NO or NF based on position of jumpers next to rel...

Page 21: ...22...

Page 22: ...23 Ex Ox Tox Gasdetectie Westerdreef 5V 2152 CS Nieuw Vennep Telefoon 0252 620885 E mail info exoxtox n Website www exoxtox nl...

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