Hach Sigma 950, Basic User Manual

Page: 8 / 100

The communication features of this instrument include a standard RS232 port and optional internal
modem. Use the RS232 port for remote data transfer, remote programming and to update internal
software using flash memory (RS232 only). The Modbus ASCII protocol is used for SCADA
communication through the RS232 port.
Use InSight data management software to:
• Transmit the data log from the instrument to a PC
• Remotely configure the instrument
• Do other data manipulation using the RS232 port or the optional internal modem
Installation
D A N G E R
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Installation requirements for CE marked instruments
Only the flow meter models, part numbers and options in Table 1 are approved for use in the
European Union (EU) according to the CE mark of the manufacturer.
Instruments with a CE mark have use and installation requirements that are subject to the European
Union’s Notified Body use limitations that follow.
• The Sigma 950 flow meter must be operated underground in sewers, drain pipes and similar
underground locations.
• The Sigma 950 flow meter must be connected to an AC mains source that is only used for
underground service. The AC mains power service cannot be used for residential locations.
If the Sigma 950 flow meter is operated in locations where there are high levels of RF energy or large
electrical transients, electromagnetic interference can cause performance-related problems.
However, these conditions are not typical in underground in sewers, drain pipes and similar
underground locations.
Table 1 Items approved for use in the European Union
Description Item no.
950 combination flow meter with both AV and bubbler sensors 3248
950 flow meter with AV sensors only 3522
950 flow meter with bubbler sensors only 2672
AV sensor options (xx-xxx = depth range, fill option and cable length) 770xx-xxx
Bubbler sensor options (xxx = cable lengths) 88007-xxx
pH sensors with 7.6 m (25 ft) cable length 3328
pH sensors with 15.2 m (50 ft) cable length 5172
4–20 mA output option 2684
12 VDC battery option 1414
230 V, 50 Hz battery eliminator with continental European Union plug 5721400
230 V, 50 Hz battery eliminator with United Kingdom plug 6244500
230 V, 50 Hz battery eliminator with Italian plug 6244600
8 English