User Guide

OPERATIONAL GUIDE
POWER CONNECTION
HI 983318-0
Connect a 2-wire power cable to the terminal strip while
paying attention to the correct positive and negative polari-
ties (12 VDC).
HI 983318-1
Connect a 3-wire power cable to the terminal strip while
paying attention to the correct earth, neutral and line
contacts (115/230 VAC).
Notes:
• All external cables connected to the rear panel should
end with wire lugs.
• It is recommended to cover the unused terminals with
insulating tape.
• At start up the meter needs a few seconds to stabilize.
Wait until a stable reading is displayed.
ALARM CONTACT
Use this contact (maximum 5A, 240VAC, 30 VDC) for
connection to an alarm or dosing system. The unit acts as a
switch to control an external device.
ACCESSORIES
CALIBRATION
Make sure the meter is in the measurement mode (the
MEAS” LED lights on).
Immerse the probe in HI7038 (6,44 ppt) calibration solu-
tion or another solution with a known g/L value.
Shake briefly and wait for reading to stabilize.
Using a small screwdriver adjust the calibration trimmer
until the meter displays “6.44” ppt or any other value
accordingly to the calibration solution. All future measure-
ments will be compensated for temperature with reference to
25ºC (77ºF).
SETPOINT
Press the “SET” key. The display will show the default or
previously adjusted value for the setpoint.
Using a small screwdriver, adjust the “SET” trimmer until
the required limit value is displayed.
PROBE MAINTENANCE
To improve probe performance and prolong its life, it is
recommended to clean it regularly.
• Immerse the tip of the probe in HI 7061 Cleaning
Solution for one hour.
• If a more thorough cleaning is required, brush the
metal pins with very fine sandpaper.
• After cleaning, rinse the probe with tap water and
recalibrate the meter.
• When not in use, clean the probe before storing it away.
Front view of the
panel-mounted unit
Side view of the
panel-mounted unit
Supplied adjustable lo-
cation brackets allow
the controller to slide
into the cutout and will
hold the unit securely
in place. 95 mm
(3.74") is the minimum
amount of space re-
quired to install the
controller with the cables
connected.
Panel-mounted
unit assembling
view
73mm
2.87"
79mm
3.11"
42mm
1.65"
49mm
1.93"
95mm MIN
3.74"
76mm
3"
0.25/4mm
0.01/0.160"
79mm
3.11"
ADJUSTABLE
LOCATION
BRACKET
HI 983318 LAYOUT
HI 740146
FUNCTIONAL DESCRIPTION
FRONT PANEL
Keypad
SET To display
setpoint
MEAS To display mea-
surement
Trimmers
CAL For calibration
SET To adjust
setpoint
LEDs
SET ON when LCD displays the set value
MEAS ON when LCD displays the measured value
ALARM ON when alarm contact is activated
REAR PANEL
1. Power Supply:
HI 983318-0 HI 983318-1
12 VDC 115/230 VAC
L1: Positive 230 VAC
L2: Negative 115 VAC
L3: ------- Neutral
L4: ------- Protection Earth
Note: the power input is internally protected by a 400 mA fuse
2. Alarm Contact: A1, A2.
This contact acts as a switch for the power. The contact
has to be protected outside by the user.
HI 983318
TDS CONTROLLER
HI 983318
TDS CONTROLLER
SET MEAS
SET
CAL
ppt
0.00 ...10.00 ppt
ALARM
OPERATING THE METER
All operations are via the front panel keys and trimmers.
“SET” and “MEAS” LEDs light up to indicate which is the
operating function.
Make sure that the meter is calibrated and the Setpoint is
properly selected before performing any measurement.
Attach the probe to the meter. Install the probe in the
fittings or immerse it in the solution to be monitored, while
making sure that metal pins are completely submerged.
Press the “MEAS” key.
The he LCD will show the TDS value of the solution in ppt
unit. Any initial variation on readings may be due to
temperature compensation.
3. Probe Connection: follow the above diagram and connect the
colored wires of probe cable as indicated. It is recommended
to connect the shield (P5) to avoid any interference.
HI 7632-00 EC/TDS probe
HI 70038P 6,44 ppt Calibration solution, 20mL sachet (25 pcs)
HI 7061M Electrode cleaning solution, 230 mL bottle
HI 710005 12 VDC power adapter, US plug
HI 710006 12 VDC power adapter, European plug
HI 710012 12 VDC power adapter, Australian plug
HI 710013 12 VDC power adapter, Southern african plug
HI 710014 12 VDC power adapter, UK plug
HI 731326 Calibration Screwdriver (20 pcs)
HI 740146 Mounting brackets
The “ALARM” LED will light up when the alarm contact is
closed, to indicate a TDS value higher than selected setpoint.
sample.
When the alarm contact is closed, the "ALARM" LED will be
lit.