supply of [1] online multi parameter water quality monitor with electrode. ph/orp/tds/cd/salinity/do/temp. compact, robust and communicating in modbus r485 or sdi12 the instrument can be associated with every type of terminal with inlet rs485 modbus automaton of remote processing, transmitter, to logger. sensor type temperature ntc inox 0,00 to + 50,00 c 0,1c ph electrolyte ag / agcl reference 0,00 to 14,00 ph 0,1 orp platinum electrode ag / agcl reference 1000,0 mv 2 mv dissolved oxygen/tc 0 to 20,00 mg/l 0,1 mg/l 1 optical luminescence technology 200,0 sat conductivity technology 4 electrodes 0,0 to 200,0 s/cm 1 of the full scale (2 platinum and 2 graphite) 0 to 200,0 ms/cm salinity technology 4 electrodes 5,00 - 60,00 ppt 0,5 of the full scale (2 platinum and 2 graphite)