Hanna Instruments HI 983321-0 User Manual

These Instruments are in

Recommendations for Users

Before using these products, make sure that they are entirely suitable for

the environment in which they are used. Operation of these instruments in

residential areas could cause unacceptable interferences to radio and TV

equipment. The metal band at the end of the probe is sensitive to electro-

static discharges. Avoid touching this metal band at all times. During operation,

ESD wrist straps should be worn to avoid possible damage to the probe by

electrostatic discharges. Any variation introduced by the user to the sup-

plied equipment may degrade the instrument’s EMC performance.

To avoid electrical shock, do not use these instruments when voltage at the

measurement surface exceeds 24 VAC or 60 VDC. Use plastic beakers to

minimize any EMC interferences.

To avoid damage or burns, do not perform any measurement in microwave

http://www.hannainst.com

CE DECLARATION

OF CONFORMITY

Compliance with the CE Directives

against defects in work-

Dear Customer,
Thank you for choosing a Hanna product. This manual will

provide you with the necessary information for the correct
operation of the meter. Please read it carefully before using
the meter. If you need additional technical information, do
not hesitate to e-mail us at [e-mail].

These instruments are in compliance with the directives.

PRELIMINARY EXAMINATION

Remove the instrument from the packing material and
examine it carefully. If any damage has occurred during
shipment, immediately notify your Dealer or the nearest
Hanna Customer Service Center.
The meter is supplied with:

• Instruction manual;

• Mounting brackets.
Note: Conserve all packing material until the instrument

has been observed to function correctly. Any defective
item must be returned in its original packing.

GENERAL DESCRIPTION

HI 983321-0 and HI 983321-1 are conductivity indicators
and controllers with a relay output designed for simplicity of
use in a wide range of applications.
The models are panel mounted with membrane keypads on
the front panel and an easy-to-read LCD display.

All the meters automatically compensate for the temperature
variation. The probe is easy to clean and requires little
maintenance.

Measurements are highly accurate and the meters can be
calibrated at one point.

Power supply, wiring and selection are made via the plug­in terminal blocks on the rear panel.

LED indicators on the front panel identify whether the
controller is in set or measurement mode, and if alarm is
active.

SPECIFICATIONS

HI 983321

Range 0.00 to 19.99 ppm
Resolution 0.01 ppm
Accuracy (@ 20°C) ±2% f.s.

Setpoint Adjustable through multiturn trimmer
Alarm Condition LED ON and alarm contact closed when

measured TDS value is higher than setpoint

Alarm Output 2-contact relay, no fuse protected.

5A, 240 VAC, 30 VDC

Probe HI 7634-00 EC/TDS probe
TDS conversion factor 0.5
Temp.Compensation Automatic from 5 to 50°C

(41 to 122°F); ß=2%/ºC

Calibration Factory calibrated

and manual, at one point through trimmer

Calibration Solution recommended >13 ppm

(should be prepared by using HI 9034 TDS meter)

Power supply: External
HI 983321-0 12 VDC
HI 983321-1 115/230 VAC; 50/60Hz

Dimensions 79 x 49 x 95 mm (3.1 x 1.9 x 3.7”)
Weight:

HI 983321-0 140 g (4.96 oz)
HI 983321-1 250 g (8.85 oz)

ovens.

ACCESSORIES

EC/TDS probe

Electrode cleaning solution, 230mL bottle

12 VDC power adapter, US plug

12 VDC power adapter, European plug

12 VDC power adapter, Australian plug

12 VDC power adapter, Southern Africa plug

12 VDC power adapter, UK plug

Calibration Screwdriver (20 pcs)

Mounting brackets

Supplied adjustable lo-

mm (3.74") is the mini-

HI 983321 LAYOUT

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.

OPERATIONAL GUIDE

POWER CONNECTION

Press the “MEAS” key.
The LCD will show the TDS value of the solution in ppm unit.

Any initial variation on readings may be due to tempera­ture compensation.

The “ALARM” LED will light up when the alarm contact is
losed, to indicate an TDS value higher than selected
setpoint.

Front view of the
panel-mounted unit

HI 983321-0

Connect a 2-wire power cable to the terminal strip while
paying attention to the correct positive and negative con­tacts (12 VDC).

HI 983321-1

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, 30VDC) for connec­tion to an alarm or dosing system. The unit acts as a switch
to control an external device.

CALIBRATION

This meter is factory calibrated.
If re-calibration becomes necessary, a calibration solution

has to be prepared with the help of HI 9034 TDS-meter (or
similar). Recommended conductivity value of calibration solu­tion should be around 13 ppm.

Make sure the meter is in the measurement mode (the
“MEAS” LED lights on).

Immerse the probe in the prepared solution.
Shake briefly and wait for reading to stabilize.
Using a small screwdriver adjust the calibration trimmer

until the meter displays the required TDS value on the LCD.

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

Side view of the
panel-mounted unit

cation brackets allow the
controller to slide into the
cutout and will hold the
unit securely in place. 95

mum amount of space
required to install the
controller.

Panel-

mounted unit

assembling

view

OPERATING THE METER

The contact

All operations can be controlled via 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.

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 at least 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.

HI 7634-00
HI 7061M
HI 710005
HI 710006
HI 710012
HI 710013
HI 710014
HI 731326
HI 740146