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APPENDIX B – USING A SEQUENCER WITH HACH SERIES
5000 ANALYZER
The Sample Sequencer may operate with a Hach Series 5000 analyzer. The Series 5000
instruments operate in batch-mode style and require the appropriate configuration for use with
the Sample Sequencer. Hach 5000 analyzers have special features that provide a contact
closure at the end of the batch. This is called the "Mark End of Measurement" contact closure.
The contact closure causes the Sample Sequencer to advance to the next sample point. See
Batch Mode operation description in this manual for more information.
Figure B1 illustrates how to connect the Sample Sequencer to a Hach Series 5000 analyzer.
The Hach 5000 analyzer must be configured properly to operate with the Sample Sequencer.
The analyzer must be programmed to use relay #3 and relay #4 for System Alarm and End-of-
Measurement contact closure indications, respectively. Consult the Hach analyzer manual for
information about configuring the System Alarm to relay 3. The following procedure describes
how to configure the End-of-Measurement contact closure on the Hach 5000.
Configuring the Series 5000 (Catalog No. 60000-XX through 60004-XX) for MARK END OF
MEASURE on Relay 4
1. Remove the front cover of the control module. Move the No. 1 DIP switch on SW1 to the
ON position. This will enable the Extended Diagnostic menu. (Switch SW1 is an 8-switch
DIP located near the center of the circuit board.)
2. Return to the front of the control panel and press the TEST key. Using the NEXT key,
scroll through the diagnostic menu to MARK END OF MEAS. Press ENTER and select
ENABLE with the NEXT key. Then, press ENTER. This will activate the MARK END OF
MEASURE contact closure.
3. Turn OFF switch No. 1 on switch bank SW1 of the circuit board. This will return the
analyzer to normal operation but leave the MARK END OF MEASURE function enabled.
Note: This procedure will have to be repeated if a cold start is performed.
4. Reassign the System Alarm to relay 3: Press the SET UP key. ALARMS will appear. Press
ENTER. Scroll with the NEXT key to RELAY CONFIG and press ENTER. Scroll to SYS
ALRM with the NEXT key and then press ENTER. Scroll with the NEXT key to RLY 3 and
press ENTER.
5. Reassign Alarm 2 to No Relay: Press the SETUP key on the control module. ALARMS will
appear. Press ENTER. Scroll with the NEXT key to RELAY CONFIG and press ENTER.
Scroll to ALARM2 and press ENTER. Scroll with the NEXT key to NO RLY and press
ENTER.
6. Assign relay 4 to Mark End of Measure: Press the SETUP key on the control module.
ALARMS will appear. Press ENTER. Scroll with the NEXT key to RELAY CONFIG and
press ENTER. Scroll to MARK END OF MEAS and press ENTER. Note: MARK END OF
MEAS will not appear unless it has been properly activated per the above steps.
Scroll with the NEXT key to RLY 4 and press ENTER. This will assign the alarm 4 relay to
mark the end of measurement with a contact closure. The contact closure makes the
Sample Sequencer advance to the next sample point.
7. Verify the Sample Sequencer is operating in the batch mode.
SPD 5.5.15
Sentry Equipment Corp | Sample Sequencer
5
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