EL3000 CONTINUOUS GAS ANALYZERS |  CI/EL3000-EN REV. C  91 
 
Model EL3040 
 
 
 
Safety instructions 
Observe the relevant national safety regulations for installing and operating electric systems. 
 
  Power supply connection  
(see Connecting the power supply on page 97) 
(3-pin grounded instrument connector in accordance with EN 60320-1/C14; 
connection cable included in scope of supply) 
  Digital I/O module  
(see Digital I/O module on page 94) 
  Analog output module  
(see Analog output modules on page 93) 
  Modbus module  
(see Modbus®-Module on page 96) 
  Profibus module  
(see PROFIBUS®-Module on page 96) 
  Ethernet 10/100BASE-
T interface (for configuration and software update as 
well as for transferring the QAL3 data) 
  Potential equalization connection (terminal capacity max. 4 mm
2
) 
Figure 39:  Electrical connections model EL3040 
 
Note 
The figure shows all available I/O module types and shows only an example of the assembly with I/O modules (max. 4). The actual 
assembly of a delivered gas analyzer may differ from this; it is documented in the device data sheet.