8.5 External sample
D A N G E R
Electrocution hazard. Always make sure the analyzer is turned off and power is disconnected
before installing this option.
This option allows the analyzer to measure an external sample without modifying the
process parameters. The external sample is taken from a beaker (user supplied) instead
of the process sample. A switch is supplied to switch between sample measurement and
external sample measurement.
Figure 15 External sample option
1 Pump 3 Polyethylene tubing 5 Input block (already installed on the
analyzer)
2 Elbow fitting 4 Connection to attach to top of input
block
6 Electric cable
Install the option as follows (the numbers in brackets refer to Figure 15):
1. Mount the pump (1) in position 4 on the rear of the panel (see Figure 10 on page 37).
2. Connect the tubing (3) between the pump (2) and the input block (5) installed on the
measurement cell cover using the fitting (4).
3. Connect the cable (6) to terminals 1 and 11 of J14 in the electronic unit, and make
sure that jumper X4 is installed between terminals 2 and 3 and a strap placed
between terminals 8 and 10 of J14 (refer also to Figure 8 on page 18 and Table 6
on page 20).
4. Install the beaker holder (mounted externally).
5. Connect the switch to terminals 3 and 4 of J2 in the electronic unit (refer also to
Figure 8 on page 18 and Table 2 on page 19).
Reconnect power to the analyzer and proceed as follows:
1. From the PROGRAMMING menu, select PM XXXX and enter the special code.
2. Select the OPTION menu.
3. Select the MANUAL option and select YES to turn this option on.
4. It is recommended to verify the time it takes to fill the measuring cell with sample from
the beaker (usually between 10 and 20 seconds). This time should then be entered
into the system using the option SAMPLE TIME XXXs from the menu above.
Additional options
43
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