Hach Ultra MET ONE 237AB, User Manual

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Appendix A Optional Accessories
A.1 Relative humidity/Temperature (RH/T) probe
The RH/T probe (refer to Figure 4 on page 10 ) monitors relative humidity (10% to 90%)
and temperature (5 to 125 °F or –15 to 50 °C). The MET ONE 237 particle counter
displays the reading and includes it in the internal particle count data record. Refer to
section 3.2.5 on page 12 for installation instructions.
A.2 High-pressure diffuser
The high-pressure diffuser (refer to Figure 19 ) is connected to the sensor inlet tubing of
the MET ONE 237 particle counter. The diffuser (permits direct sampling of pressurized
air at pressures from 30 to 150 psi.
A.3 RS485 converter
The RS485 converter (refer to Figure 20 ) converts data from RS232 to RS485 format for
longer serial networking to a computer. Contact technical support for installation details.
Figure 18 RH/T probe (Catalog No. 2080825)
Figure 19 High-pressure diffuser (Catalog No. 2080372-6)
Figure 20 RS485 converter (Catalog No. 2082383-2)