Hanna Instruments HI 5000 - Manual (Page 15)

15
• Unscrew the 4 screws on the right hand panel and remove the
cover and the gasket. Thread the wires through the access ports
on the right hand side of the controllers.
• Before Before Before Before Before connecting the controller to the mains, wire connecting the controller to the mains, wire connecting the controller to the mains, wire connecting the controller to the mains, wire connecting the controller to the mains, wire
the controller completely the controller completely the controller completely the controller completely the controller completely and make all the connections for
pumps, valves, alarm, probe, set the alarm threshold and adjust
the settings. Upon completion replace the cover
replace the cover replace the cover replace the cover replace the cover. Only then
connect the controller to the power supply.
pH ELECTRODE & GROUND PROBE CONNECTIONS
• Simply attach any combination pH electrode with a male BNC
connector (such as HI 1002/3) to the female BNC socket located
on the bottom of the casing and twist it into a secure position.
• All controllers provide for a Ground Probe (differential input) to
reduce electrical noise and interference. The controller is shipped
with the Matching Pin and Reference terminals shorted (see 18 -
Functional Diagram). If you are not using a matching pin
(ground probe), leave the terminals shorted
leave the terminals shorted leave the terminals shorted leave the terminals shorted leave the terminals shorted
and skip the next two paragraphs.
• It is recommended that only electrodes that
incorporate a matching pin (such as HI 1003/3) are utilized. In
this case simply attach the 4-mm banana connector of
attach the 4-mm banana connector of attach the 4-mm banana connector of attach the 4-mm banana connector of attach the 4-mm banana connector of
the matching the matching the matching the matching the matching pin to the socket pin to the socket pin to the socket pin to the socket pin to the socket located next to the BNC
connector on the outer casing (see 27 and 18 - Functional
Diagram) and remove the jumpers
remove the jumpers remove the jumpers remove the jumpers remove the jumpers shorting the matching
pin terminals.
• When using a separate probe for grounding purposes, wire it to
the Matching Pin terminals on the right hand panel and remove
the jumpers (see 18 - Functional Diagram).
BNC CONNECTOR
MATCHING PIN FOR GROUND PROBE
DIN CONNECTOR
WIRING ACCESS
PORTS
NOTE:
NEVER leave the jumper in when
using an electrode with a matching
pin. This can shorten the life of the
electrode (reference) drastically.
REMOVE WHEN
USING MATCHING PIN