Wiring Power And Signal Terminals - Hach BioTector B7000i User Manual

5.2.2 Wiring Power and Signal Terminals

DANGER
Figure 9 and figure 10 below show the typical mains (for both 230 and 115 volts systems respectively) and
the 4-20mA signal connections in BioTector. The connection to mains power {230V or 115V AC (10%),
50/60 Hz} should be carried out by a certified electrician, in accordance with site regulations. The mains wire
specifications are 3 cores, 10 Amps minimum current rating and 1.50mm
Area). The mains cable should be screened and screen earthed to comply with the Electromagnetic
Compatibility Directive (2004/108/EC).
For 4-20mA and any other signal connections, only screened instrument cable, which comply with the EEC
directive, should be used. The signal cable should also be screened, and the screen earthed. The
specifications for the signal wire are 8 cores (+2 cores per additional signal), 1 Amp minimum current rating,
2
0.22mm minimum CSA (Cross Sectional Area).
Figure 9 Mains and 4-20mA terminal diagram for 230 V systems
BioTector contains electrical components operating under high voltages. Contact
may result in electric shock and severe or fatal injury.
2
minimum CSA (Cross Sectional
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