Hanna Instruments HI 23 Series Manuale utente

HI 23 / HI 24 Series

Wall-mounted,

Microprocessor-based,

Conductivity and TDS

Process Controllers

Instruction Manual

Dear Customer,

Thank you for choosing a Hanna Product.

This instruction manual refers to the following products:

HI 23211-αα

αα

αEC controller with dual setpoint, ON/OFF

control and analog output

HI 23212-αα

αα

αEC controller with dual setpoint, ON/OFF

control and RS 485 port

HI 23221-αα

αα

αEC controller with dual setpoint, ON/OFF

and PID control, and analog output

HI 23222-αα

αα

αEC controller with dual setpoint, ON/OFF

and PID control, and RS 485 port

HI 24211-αα

αα

αEC and TDS controller with dual setpoint,

ON/OFF control and analog output

HI 24212-αα

αα

αEC and TDS controller with dual setpoint,

ON/OFF control and RS 485 output

HI 24221-αα

αα

αEC and TDS controller with dual setpoint,

ON/OFF and PID control, and analog out-

put

HI 24222-αα

αα

αEC and TDS controller with dual setpoint,

ON/OFF and PID control, and RS 485 port

αα

α =1, for models with 115 Vac power supply

2, for models with 230 Vac power supply

Please read this instruction manual carefully before using the

instrument. It will provide you with the necessary information

for the correct use of the instrument, as well as a precise idea

of its versatility.

If you need additional technical information, do not hesitate

to e-mail us at [email protected][email protected]

[email protected][email protected]

[email protected]

These instruments are in compliance with the directives.

TABLE OF CONTENTS

PRELIMINARY EXAMINATION ............................................4

GENERAL DESCRIPTION ................................................. 4

MAIN FEATURES OF DIFFERENT MODELS ......................... 5

FUNCTIONAL DESCRIPTION ............................................7

MECHANICAL DIMENSIONS ............................................9

SPECIFICATIONS .......................................................... 10

INSTALLATION .............................................................. 11

SETUP MODE .............................................................. 14

CONTROL MODE ........................................................ 21

IDLE MODE ................................................................. 29

ANALOG OUTPUT ....................................................... 30

CALIBRATION ...............................................................32

LAST CALIBRATION DATA ............................................... 40

FAULT CONDITIONS AND SELFTEST PROCEDURES ........... 41

EXTERNAL FUNCTIONS ................................................. 45

RS 485 COMMUNICATION ............................................46

STARTUP ......................................................................53

EC VALUES AT VARIOUS TEMPERATURES ..........................54

EC / TDS PROBE MAINTENANCE ................................... 55

ACCESSORIES .............................................................. 56

WARRANTY ................................................................. 58

CE DECLARATION OF CONFORMITY ............................. 59

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent

of the copyright owner.

PRELIMINARY EXAMINATION

Remove the instrument from the packing material and exam-

ine it carefully to make sure that no damage has occurred

during shipping. If there is any noticeable damage, notify

your Dealer or the nearest Hanna Customer Service Center

immediately.

Note Save all packing materials until you are sure that the instru-

ment functions correctly. Any damaged or defective items

must be returned in their original packing materials together

with the supplied accessories.

GENERAL DESCRIPTION

HI 23 and HI 24 series are real time microprocessor-based

EC or TDS controllers. They provide accurate measurements,

flexible ON/OFF or proportional control capabilities, ana-

log input and output, dual setpoint and alarm signal.

The system is composed of a case inside which the signal

conversion circuitry, the microprocessor circuitry and the

output power drivers are contained.

GREAT FLEXIBILITY

The HI 23 and HI 24 controller series offer a great flexibility

with the possibility to connect a large variety of peripherals,

such as pumps, valves, relays and other control devices.

Each output can be fully programmed. The input can be

from a conductivity probe or from a 4-20mA transmitter. A

programmable analog output can be used for monitoring or

other purposes.

The controller also has the capability to communicate with a

computer via RS485 bus and to be part of an RS485 net-

work.

This allows the control of any process where conductivity is

involved.

The figure below illustrates the connection possibilities of ad-

vanced Hanna controllers, such as HI 23 or HI 24.

MAIN FEATURES OF DIFFERENT MODELS

•Display: large LCD with 4 ½ 13 mm digits and 3 ½ 7.7 mm

digits.

•LEDs: four LEDs are provided for signaling the energizing

of relays 1 and 2 (yellow LEDs) and alarm relay (a green

and a red LED).

•Relays: 2 output relays for low conductivity or high con-

ductivity dosage (COM, NO and NC contacts) and

1 output relay for alarm condition (COM, NO and NC

contacts).

•Calibration: 2 points with Hanna EC and TDS calibration

solutions.

•Four different EC working ranges (0 to 199.9µS; 0 to

1999µS; 0 to 19.99mS; 0 to 199.9mS).

•Four different TDS working ranges (0 to 100.0ppm; 0 to

1000ppm; 0 to 10.00ppt; 0 to 100.0ppt) for HI 24 series.

•Possibility to switch to TDS measurements with conversion

factor from 0.00 to 1.00 (HI 24 series).

•Temperature compensation of the HANNA standard solu-

tions.

•Temperature compensation of the EC and TDS reading with

temperature coefficient ß selectable from 0 to 10%/°C.

•Use of a 3-wire Pt 100 temperature sensor to compensate

for the cable resistance and have a precise automatic tem-

perature compensation of the measurements in long dis-

tance applications.

•Manual temperature setting when the temperature probe is

not inserted or the temperature exceeds the upper range.

•Last calibration data internally recorded (nonvolatile EE-

PROM memory): calibration date and time, cell constant,

calibration solution values.

•Input: 4-ring EC/TDS probe with cell constant 2.0 ± 10%,

or 4-20mA analog input from a transmitter.

•Analog output (HI 23xy1 and HI 24xy1)

-isolated 0-1 mA, 10 KΩmaximum load (optional);

-isolated 0-20 mA, 750 Ωmaximum load (optional);

-isolated 4-20 mA, 750 Ωmaximum load (optional);

-isolated 0-5 VDC, 1 KΩminimum load (optional);

-isolated 1-5 VDC, 1 KΩminimum load (optional);

-isolated 0-10 VDC, 1 KΩminimum load (optional).

•Real time clock.

•Serial comunication via RS485 with the possibilities to set

the working parameters and to read the displayed data (HI

23xy2 and HI 24xy2).

•Calibration and Setup procedures allowed only through

an unlock password.

FUNCTIONAL DESCRIPTION

1. Liquid Crystal Display

2. CAL DATA key last calibration data viewing (enters and exits)

3. LCD key exits from setup and reverts back to normal mode (in idle

or control phases with the measurement on the display).

During EC/TDS calibration, it alternates EC/TDS buffer

value and current cell constant on the display. In HI 24

series, it switches between EC and TDS reading

4. CAL key initiates and exits calibration mode

5. SETUP key enters setup mode

6. ðkey moves to the next digit/letter (circular solution) when se-

lecting a parameter. Same as ñkey during last calibration

data viewing mode

7. ñkey increases the blinking digit/letter by one when selecting a

parameter. Advances forward while in last calibration

data viewing mode. Increases the temperature setting

when temperature probe is not inserted

8. CFM key confirms current choice (and skips to the next item)

9. òkey decreases the blinking digit/letter by one when selecting

a parameter. Reverts backward while in last calibration

data viewing mode. Decreases the temperature setting

when temperature probe is not inserted

10. LEDs

1. RS 485 communications terminal (HI 23xy2 and HI 24xy2

models only)

2. Analog Output terminal (HI 23xy1 and HI 24xy1 models only)

3. Pt 100 Temperature Sensor terminal

4. Power supply output for external transmitter

5. 4-20 mA input from external transmitter

6. Main Power Supply

7. Alarm Terminal

8. Contact 1 - First Dosing Terminal

9. Contact 2 - Second Dosing Terminal

10. EC/TDS probe connector

11. Hold terminal

12. Timer terminal

Unplug the meter before any electrical connection.

Note The connections of terminals 1 to 5 are numbered from 1 to 15

from top to bottom and the connections of terminals 11 and 12

are numbered from 16 to 19 from top to bottom.

MECHANICAL DIMENSIONS

* Note: actual TDS range for HI 24 series depends on TDS factor set.

SPECIFICATIONS

Range 0.0 to 199.9 µS/cm, 0 to 1999 µS/cm

0.00 to 19.99 mS/cm, 0.0 to 199.9 mS/cm

0.0 to 100.0 ppm, 0 to 1000 ppm (HI 24 series only)**

0.00 to 10.00 ppt, 0.0 to 100.0 ppt (HI 24 series only)**

-10.0 to 100.0 °C

Resolution 0.1 µS/cm, 1 µS/cm, 0.01 mS/cm, 0.1 mS/cm

0.1 ppm, 1 ppm, 0.01 ppt, 0.1 ppt (HI 24 series only)

0.1 °C

Accuracy ±0.5 % full scale (EC and TDS)

(@20°C/68°F) ±0.5°C between 0 to 70°C, ±1°C outside

Temperature Automatic or manual, -10 to 100°C

Compensation with β adjustable from 0.00 to 10.00%/°C

Typical EMC Deviation ±2 % full scale (EC and TDS) / ±0.5 °C

Installation Category II

Probe 4-ring conductivity probe with built-in 3-wire Pt100

temperature sensor or conductivity probe + external Pt100

(see “Accessories” section)

Analog Input 4 - 20 mA

Analog Output 0-10 Vdc, 0-5 Vdc or 1-5 Vdc; 0-1mA, 0-20 mA or 4-20mA

RS485 baud rate 1200, 2400, 4800 and 9600

Power Supply 230 ±10% VAC or 115 ±10% VAC, 50/60 Hz

Power Consumption 15 VA

Over Current Protection 400 mA 250 V fast fuse

Relays 1, 2 and Contact outputs SPDT, 5A-250 VAC, 5A-30 VDC (resistive load)

Alarm Relay Fuse protected: 5A, 250V fuse

Environment 0-50 °C; RH max 85% non-condensing

Case Material Fiber-reinforced, self-extinguishing ABS

Protection IP 54

Dimensions 221 x 181 x 86 mm (8.7 x 7.1 x 3.4”)

Weight 1.6 kg (3.5 lb.)

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