Hanna Instruments HI 24 Series Manuel utilisateur

HI 23 / HI 24 Series

Wall-mounted,

Microprocessor-based,

Conductivity and TDS

Process Controllers

Instruction Manual

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.

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]

These instruments are in compliance with the directives.

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).

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.

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. key moves to the next digit/letter (circular solution) when se-

lecting a parameter. Same as key during last calibration

data viewing mode

7. key 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. key 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

• 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.

MECHANICAL DIMENSIONS

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.

1110

INSTALLATION

HI 23 and HI 24 series offer a multitude of possibilities,

from dual setpoints to ON/OFF or PID dosage, isolated out-

puts with user-selectable zoom, recorder outputs in mA and

volts.

Use the 3-wire Pt 100 temperature sensor to compensate for

the cable resistance and have a precise automatic tempera-

ture compensation of the measurements in long distance

applications.

See the below diagram for a recommended installation.

Note All external cables to be connected to the right panel should

end with cable lugs.

Use wires with cable lugs when connecting to the strip con-

tacts.

Always disconnect the power cord when wiring the controller.

CONDUCTIVITY

PROBE

* 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.)

1312

If the Pt 100 has more than 2 wires, con-

nect the two wires of one end to pins 9

and 10 (pin 9 is an auxiliary input to

compensate for the cable resistance) and

one wire from the other end to pin 8.

Leave the fourth wire unconnected, if

present.

Note If the meter does not detect the temperature probe, it will

switch automatically to manual temperature compensation

with the temperature adjustable through the up and down

arrow keys. The “°C” symbol will blink on the LCD.

Note All external cables to be connected to the right panel should

end with cable lugs.

•Analog output: In the models where it

is available, connect an external recorder

with a 2-wire cable to these terminals

(#2 on page 8) paying attention to the

correct polarity. A wide variety of output

signals, either in V or in mA, is avail-

able to fit most standards. Terminal 5 is the voltage output,

terminal 6 is the analog output common and terminal 7 is

the current output.

•Contact 1 and 2: Connect the dosing

devices to these terminals (#8 and #9

on page 8) in order to activate and de-

activate them according to the selected

control parameters.

•mA Input: to switch to mA input signal

from a conductivity transmitter (e.g.

HI8936 or HI98143 series) see the setup

procedure (code 6).

• Power Supply: Connect a 3-wire power

cable to the terminal strip, while paying

attention to the correct line (L), earth (PE)

and neutral (N) terminal connections.

Power: 230VAC - 50 mA.

Line Contact: 200mA fuse inside.

PE leakage current 1 mA; this contact must be con-

nected to ground.

• Conductivity input: the default input is from conductivity

probe. Connect the EC probe to the terminals #10 on

page 8. HI7639D is a conductivity probe with built-in tem-

perature sensor.

• Pt 100 Terminals (to be used only if the EC probe is

without Pt 100): connect to these contacts (#3 on page 8)

the Pt 100 temperature sensor for automatic temperature

compensation of measurement. Follow the below diagram

for connecting a 3-wire Pt 100 sensor as HI5001/5:

Color Pin #

GRAY 8

BROWN 9

YELLOW 10

If using a different Pt 100, separated from the conductivity

probe, connect the cable shield to pin 11, and the other

wires as explained below.

In the case of a 2-wire sensor connect

the Pt 100 to pins 8 and 10, and short

pins 9 and 10 with a jumper wire.

1514

The setup codes can be selected

after password and CFM are

pressed. When CFM is pressed,

the current setup item is saved

on EEPROM and the following

item is displayed. Whenever

LCD is pressed, the device reverts back to control mode. The

same is true when CFM is pressed on the last setup item.

The possible transitions in setup mode are the following:

ENTERING THE PASSWORD

• Press SETUP to enter the setup mode. The LCD will display

“0000” on the upper part and “PAS” on the lower. The first

digit of the upper part of the LCD will blink.

• Enter the first value of the password by the or keys.

• Then confirm the displayed digit with and move to the

next one.

• When the whole password has been inserted, press CFM

to confirm it.

Connect the two signal wires from the transmitter to terminals

#5 on page 8, paying attention to the correct polarity. Termi-

nal 14 is the positive input and terminal 15 is the negative

input.

An unregulated 10 ÷ 30 VDC - 50 mA max.

power supply output (#4 on page 8) is pro-

vided to power the transmitter, if needed. Pin

12 is the positive voltage terminal and pin 13

is the negative voltage terminal.

Once the installation is completed, select the appropriate

working range, the reference temperature (20 or 25°C) and

perform conductivity or TDS calibration as described in this

instruction manual. Set the control parameters according

to the process of interest.

SETUP MODE

The Setup Mode allows the user to set all needed character-

istics of the meter.

The setup mode is entered by pressing SETUP

and entering the password when the device

is in idle or control mode.

Generally speaking, if the password is not inserted the user

can only view the setup parameters (except for password)

without modifying them (and the device remains in control

mode). An exception is certain setup items, or flags, which

can activate special tasks when set and confirmed.

To each setup parameter (or setup item) is assigned a two-

digit setup code which is entered and displayed on the

secondary LCD.

1716

SETUP CODES

The following table lists the setup codes along with the descrip-

tion of the specific setup items, their valid values and whether

password is required to view that item (“PW” column):

Code Valid Values Default PW

00 Factory ID 0 to 9999 0000 no

01 Process ID 0 to 99 00 no

02 Control enable/disable 0: C.M. disabled 0 no

1: C.M. enabled

03 Range 1: 0.0-199.9 µS (or 100.0 ppm) 4 no

(depends on model) 2: 0-1999 µS (or 1000 ppm)

3: 0.00-19.99 mS (or 10.00 ppt)

4: 0.0-199.9 mS (or 100.0 ppt)

04 Reference Temperature 20°C or 25°C 25°C no

05 Temperature Coefficient 0.00 to 10.00 %/°C 2.00 no

06 Input Selection 0: conductivity probe 0 no

1: 4-20 mA input signal

07 Temperature ATC: Automatic ATC no

compensation User: Manual

08 TDS Factor 0.00 to 1.00 0.50 no

11 Relay 1 mode 0: disabled 0 no

(M1) 1: ON-OFF high setpoint

2: ON-OFF low setpoint

3: PID, high setpoint

4: PID, low setpoint

12 Relay 1 setpoint (S1) 0.5 to 99.5% full scale 25% f.s. no

13 Relay 1 hysteresis (H1) 0 to 5% f.s. 1% f.s. no

14 Relay 1 deviation (D1) 0.5 to 10% f.s. 1% f.s. no

15 Relay 1 reset time 0.1 to 999.9 minutes 999.9 no

16 Relay 1 rate time 0.0 to 999.9 minutes 0.0 no

Note The default password is set at “0000”.

• The LCD will display “SET” on the up-

per part and “c.00” on the lower, al-

lowing the user to edit setup param-

eters (see table below).

• Using the arrow keys as for the above password proce-

dure, enter the code of the parameter to set, e.g. 41.

• Confirm the code by pressing CFM and the default or the

previously memorized value will be displayed with the

first digit blinking.

Note When the password is not inserted or a wrong password is

confirmed, the display will only show the previously memo-

rized value, without blinking (read only mode). In this case,

the value cannot be set. Press LCD and start again.

• Enter the desired value using the arrow keys and then press

CFM.

• After confirmation, the selected parameter is

displayed. The user can scroll through the

parameters by pressing CFM.

• In order to directly set another param-

eter, press SETUP again and enter the

code or scroll to it by pressing CFM.

1918

Code Valid Values Default PW

71 Baud rate 1200, 2400, 4800, 9600 4800 yes

72 Cleaning timer 0 to 19999 days 0 no

73 Initial cleaning day 01 to 31 01 no

74 Initial cleaning month 01 to 12 01 no

75 Initial cleaning year 1998 to 9999 1998 no

76 Initial cleaning time 00:00 to 23:59 00:00 no

77 Cleaning ON interval 0 to 19999 minutes 0 no

90 Display selftest 0: off 0 yes

1: on

91 Keyboard selftest 0: off 0 yes

1: on

92 EEPROM selftest 0: off 0 yes

1: on

93 Relays and LEDs selftest 0: off 0 yes

1: on

94 Watchdog selftest 0: off 0 yes

1: on

99 Unlock password 0000 to 9999 0000 yes

Note The process controller automatically checks to ensure that

the entered data matches other related variables. If a wrong

configuration is entered, “ERROR” blinks on the LCD to

prompt the user. The correct configurations are the follow-

ing:

If M1=/ 0 then S1HA, S1LA;

If M2=/ 0 then S2HA, S2LA;

If M1= 1 then S1-H1LA;

If M1= 2 then S1+H1HA;

If M1= 3 then S1+D1HA;

If M1= 4 then S1-D1LA;

Code Valid Values Default PW

21 Relay 2 mode (M2) same as relay 1 0 no

22 Relay 2 setpoint (S2) 0.5 to 99.5% full scale 75% f.s. no

23 Relay 2 hysteresis (H2) 0 to 5% f.s. 1% f.s. no

24 Relay 2 deviation (D2) 0.5 to 10% f.s. 1% f.s. no

25 Relay 2 reset time 0.1 to 999.9 minutes 999.9 no

26 Relay 2 rate time 0.0 to 999.9 minutes 0.0 no

30 Alarm relay 0.5 to 99.5% full scale 95% f.s. no

High Alarm (HA) HA-HysLA+Hys,Hys=1.5%f.s.,HAS1 or HAS2

31 Alarm relay 0.5 to 99.5% full scale 5% f.s. no

Low Alarm (LA) LA+HysHA-Hys,Hys=1.5%f.s.,LAS1 or LAS2

32 Proportionalcontrol 1 to 30 min 5 no

mode period

33 Maximum relay ON time 1 to 10 min 10 no

(after which an alarm mode is entered)

34 Alarm mask time 00:00 to 30:00 00:00 no

40 Analog output selection 0: 0-1mA 2 no

1: 0-20 mA

2: 4-20 mA

3: 0-5 VDC

4: 1-5 VDC

5: 0-10 VDC

41 Analog output 0 to 100% full scale 0 no

lower limit (O_VARMIN) (O_VARMIN O_VARMAX - 5% f.s.)

42 Analog output 0 to 100% full scale 100% f.s. no

upper limit (O_VARMAX) (O_VARMIN O_VARMAX - 5% f.s.)

60 Current day 01 to 31 from RTC no

61 Current month 01 to 12 fromRTC no

62 Current year 1998 to 9999 from RTC no

63 Current time 00:00 to 23:59 fromRTC no

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