Select The Voltage Inputs - Hach 2200 PCX User Manual

Figure 9 Particle counters wiring
1 Wiring for multiple instrument systems
2 Wiring for last instrument in multiple instrument
system
3 Terminated JP1 jumper configuration for last
instrument

Select the voltage inputs

1. Select +5 V full scale and remove jumpers JP2 through JP7 that are the same as the inputs used
(AIN2 through AIN7).
2. Select +10 V full scale and install jumpers JP2 through JP7 that are the same as the inputs used
(AIN2 through AIN7).
3. Configure the voltage inputs to accept 4–20 mA inputs when connected to a 250 ohm or a 1% (or
better) shunt resistor in parallel with the analog signal cable. Set the applicable jumper for a 5 V
operation.
4–20 mA current inputs: Use IN0 (RET0 is ground) and IN1 (RET1 is ground) on the instrument
interconnect card. The incoming data is sent along with the particle count data via serial
communications to the computer. With the installed online software, the data is shown and recorded.
Connect analog inputs from external devices to the instrument interconnect card as shown in
Figure 10.
4–20 mA current outputs: If the optional I/O kit is installed, each sensor has eight 4–20 mA analog
outputs of particle count data that the user can configure to output raw particle counts. The 4–20 mA
output levels are in relation to the total number of particles counted during the sample period. The
data is shown and recorded in the installed PC software. Each size category will have a unique
analog output signal and will connect to an individual analog input on the data acquisition system
input terminals. Analog outputs are connected to the instrument interconnect card. Refer to
Figure 11.
4 RS485 signal converter with cable to computer
5 RS485 shielded cable (Beldon 9841 or equivalent)
6 Open JP1 jumper configuration
English 15