Pahlen Autodos M1, Autodos M2, Autodos M3 User Manual

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Swedish design

and manufacture

since 1967

Autodos M1, M2, M3

Manual

User manual

User manual

Инструкция

Gerbrauchsanleitung
Manuel d’utilisation
Manuiale d’usa
Manual de instruccio-
nes

MA60-10 rev 3

2015

ENGLISH

Copyright © 2015 Pahlén AB, Box 728, SE-194 27 Upplands Väsby, Sweden

Tel. [phone], Fax [phone], e-mail: [e-mail], www.pahlen.com

Register

1. General information about the measuring equipment .................................................................... 3

2. Technical data ..................................................................................................................................... 4

3. Model variants ..................................................................................................................................... 5

4. Program versions ............................................................................................................................... 6

5. Reservation ......................................................................................................................................... 6

6. Safety ................................................................................................................................................... 7

7. Installation ........................................................................................................................................... 7

Installation pipes ......................................................................................................................... 7

Installation example M1 ................................................................................................. 8

Installation example M2, M3 .......................................................................................... 9

Installation electrics ................................................................................................................... 10

Connection example M1 ................................................................................................ 10

Connection example M2, M3 ......................................................................................... 11

8. Start up guide ......................................................................................................................................12

9. Operation

Displays, buttons and LEDs ...................................................................................................... 13

Authorization ............................................................................................................................... 14

View/change

Set values ...................................................................................................................... 14

Alarm limits .................................................................................................................... 14

Other info: Uncalibrated values, Flow, Temp, Version, Serial no ................................... 15

Dosing selection ......................................................................................................................... 15

Other buttons: Reset, Cal, ↑ ↓ (arrow up, arrow down) ................................................................ 15

LED indicators ............................................................................................................................. 15

Text on the display, Runtime texts .............................................................................................. 16

Start-up sequence ....................................................................................................................... 16

Factory-set system conguration ............................................................................................. 17

Adjusting set values

Chlorine regulation free chlorine, (On-off/Frequency controlled) ........................................ 17

Chlorine regulation combined chlorine .......................................................................... 17

pH regulation (On-off/Frequency controlled) ....................................................................... 18

Alarm

Setting high alarm .......................................................................................................... 19

Setting low alarm ........................................................................................................... 19

Alarm diodes .................................................................................................................. 20

Alarm delay .................................................................................................................... 20

Alarm relay delay ........................................................................................................... 20

Alarm reset .................................................................................................................... 20

Showing uncalibrated values .................................................................................................... 20

System conguration ................................................................................................................. 21

Conguration of basic functions ..................................................................................... 21

Conguration - Autodos M3 Free chlorine, combined chlorine, pH ....................22

Conguration - Autodos M3 Free chlorine, redox, pH ......................................... 23

Conguration - Autodos M2 Free chlorine/redox, pH .......................................... 24

Conguration - Autodos M1 Chlorine .................................................................. 25

Conguration - Autodos M1 Redox ..................................................................... 25

Conguration - Autodos M1 pH ........................................................................... 26

Electrode-specic conguration - general ...................................................................... 26

Conguration - Free chlorine/redox (PB200, CLE 3, Jesco, Redox) ........................ 27

Conguration - Combined chlorine (CTE 1) ......................................................... 28

Conguration - pH ............................................................................................... 29

10. Calibration

- pH ............................................................................................................................................... 30

- Redox ......................................................................................................................................... 30

- Chlorine ..................................................................................................................................... 31

- Zero point calibration ............................................................................................................... 31

- Free chlorine (PB-200 chlorine electrode) ..................................................................................... 31

- Free chlorine (Prominent 4–20mA chlorine electrode CLE 3-mA–10ppm) .........................................32

- Combined chlorine ................................................................................................................... 32

- Combined (totalt) chlorine (ProMinent 4–20mA chlorine electrode CTE 1-mA–10ppm) ................... 32

11. Maintenance ........................................................................................................................................ 32

12. Troubleshooting, error codes, alarm codes .....................................................................................32

13. Jesco free chlorine electrode (option) ............................................................................................... 34

14. Autodos PC connection (expansion) ................................................................................................. 34

15. Autodos PLC connection (expansion) ............................................................................................... 35

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Autodos M

Autodos M

ENGLISH

1. General information about the measuring equipment

Autodos M is an equipment intended for measurements and dosage of chemicals in swimming pools. The apparatus is equipped
with 1-3 channels (depending on model) to measure levels of chlorine (free chlorine and bound chlorine), redox and pH.
This manual covers all combinations. Please read the whole manual to get a full picture of how the system works and all its
setting possibilities.

Autodos M is delivered in two different parts: one measuring and control unit Autodos and one complete electrode kit.

• Autodos: include a measuring- and control unit, connectors, and this systems manual. The control unit is pre­programmed with factory settings for each respective model, but individual changes are possible to make by the user.
It is also possible to enter different access codes to avoid accidental changes.

• Electrode kit: include electrodes (different electrode types depending on which measurements and results you wish to
present), calibration liquids, connectors for the electrodes, and manual for the electrodes.

Autodos M´s properties

• Measures and controls pH (base or acid dosage) and chlorine in the forms of redox, free chlorine and bound chlorine.
With regards to bound chlorine, the total level of chlorine is measured and the display shows the value for bound chlorine.
This is calculated by Total chlorine – Free chlorine = Bound chlorine.

• Autodos uses two point calibration for each measuring cannel to ensure optimal measurements.

• Has a separate galvanic part for each electrode entry point.

• Warns for uidity errors in the valve, dosage errors and measurement values outside preset boundaries.

• Continuously shows the pool water’s current pH-value, free chlorine, bound cholrine and redox in clear LED-displays.

By pressing different buttons, the displays can also be made to show other values, for example ow and temperature.

pH-regulator

pH adjustment can be used according to:

• Manuel off.

• Automatic regulation against set value as per:
a. On/off control*.
b. Pulse width control
c. Frequency control P, PD, PI or PID regulator 10–180 pulses/min.
d. Current output control P, PD, PI or PID regulator 4–20 or 0–20mA.

• Manuel dosing:
a. On/off control*: dosing relay pH always On.
b. Pulse width control: dosing relay always On.

c. Frequency control: maximum deection (10–180 pulses/min).
d. Current output control: maximum deection (20mA).

(CO2 dosing equipment requires on/off or pulse width control).

Control is programmed in conguration mode.
Acid dosing or alkali dosing On/Off is programmed in conguration mode.

Chlorine regulator

Free and combined chlorine works the same and can be used according to:

• Manuel off.

• Automatic regulation against set value:
a. On/off control*.
b. Pulse width control
c. Frequency control P, PD, PI or PID regulator 10–180 pulses/min.
d. Current output control P, PD, PI or PID regulator 4–20 or 0–20mA.

• Manuel chlorine dosing:
a. On/off control*: dosing relay chlorine always On.
b. Pulse width control: dosing relay always On.

c. Frequency control: maximum deection (10–180 pulses/min).
d. Current output control: maximum deection (20mA).

Control is programmed in conguration mode.
1–3 current outputs (free chlorine, redox, combined chlorine and pH) 0–20 mA or 4–20 mA are programmed in conguration
mode (individually for each channel). Current outputs normally follow the measurement value, but can also be congured so that

the control value is followed thereby allowing current output control.

* default from fabric

MA60-10E

MA60-10E

3

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Autodos M

Autodos M

Separate high and low alarms (limits can be set) are indicated via ashing alarm LED(s) and a common alarm relay.

The alarm is shown as “Lo” or “Hi” on display 1–3 while the Reset button [15] is held depressed.

pH value outside of limit values stops chlorine dosing. This is indicated by a ashing AUTO LED on the chlorine channels and

the alarm text “PHF”. Chlorine dosing is stopped until the pH value has returned to a permitted value.

Flow alarm (PNP potential-free connector/turbine sensor that can be deactivated in conguration mode) is indicated via alarm

LED and alarm relay in alarm mode. The registered alarm is also shown as “FLo” on display 1–3 while the Reset button [15] is

held depressed. There is no automatic dosing during stop in ow.

All alarms have a 5-second delay, except for ow alarm, high alarm and low alarm. For the high and low alarms, delay can be
set (in Setup) between 5 and 600 seconds. The ow alarm delay can be set (in Setup) between 0 and 30 minutes.

Alarm for dosing error can be selected in conguration mode (time in minutes > 0).
Dosing error is indicated (if dosing time is selected in conguration mode) via ashing alarm LED(s) and a common alarm relay.

The alarm is shown as “doS” on display 1–3 while the Reset button [15] is held depressed.
Dosing is stopped until the alarm is reset. The dosing time counter is always zeroed with a reset.

A dosing error alarm is generated in the following conditions

• On/Off dosing, Pulse width dosing, Frequency dosing, Control output-controlled dosing :
An alarm is triggered if dosing is continual for a longer time than the specied max. time in minutes (1-60 as specied in con­guration mode). An alarm is also triggered if manual dosing is too long.

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2. Technical data

Measurement computer Autodos M1 Autodos M2 Autodos M3

Display 7 segments LED 1 x 3 digits 2 x 3 digits 3 x 3 digits

Current output 1 st 4-20 (0-20) mA 2 st 4-20 (0-20) mA 3 st 4-20 (0-20) mA

Relay outputs for dosing 1 x 1A resistive load 2 x 1A resistive load 3 x 1A resistive load

Fuses 2 x T1A 5x20mm 3 x T1A 5x20mm 4 x T1A 5x20mm

Weight 5 kg 5,3 kg 5,6 kg

Height/Width/Depth (mm) 740x410x127

Power supply 230VAC +15% -10%

Power consumption 12VA

Temperature sensor connection Screw terminal (NTC/PTC)

Flow switch input 16VDC, PNP, ca 6mA

Electrode connection pH BNC

Electrode connection redox BNC

Electrode connection, free chlorine Electrode dependent

Electrode connection, total chlorine 4–20mA current input

Standby PNP, approx. 16 VDC, approx. 5 mA

Level PNP, approx. 16 VDC, approx. 5 mA

Alarm output relay Closing/opening 1 A resistive load

Maximum load, current outputs 400 Ohm

Enclosure rating IP54

Ambient temperature 5–40 ºC

Nominal ow (min–max) 30 (20–60) l/h

MA60-10E

MA60-10E

4

Autodos M

Autodos M

3. Model variants

Also see point 2 page 12.

M1

ENGLISH

ENGLISH

M2

M3

Flow

MA60-10E

MA60-10E

5

Autodos M

Autodos M

ENGLISH

ENGLISH

M1 M2

Flow
adjustment

Start module

Flow measure­ment

Flow switch
Water tempera-

ture

Water sample outlet

Electronic
unit

Electrode:

Redox,
Total chlorine,
pH or Free chlorine

Module 2

Water out

Water in

Flow
adjustment

Start module

Flow measure­ment

Flow switch
Water tempera-

ture

Water sample outlet

Electronic
unit

Free chlorine
electrode

Module 2

pH electrode

Module 3

Water ut

Water in

Elektroder

Redox

CTE 1
Total chlorine

pH

4. Program versions

Ver. 5.3: (2011-04-29)

PB200
Free chlorine

CLE 3
Free chlorine

M3

Flow
adjustment

Start module

Flow measure­ment

Flow switch
Water tempera-

ture

Water sample outlet

Electronic
unit

Free chlorine
electrode

Module 2

Total chlorine
electrode

Module 3

pH electrode

Module 4

Water out

Water in

5. Reservation

We retain the right to modify the functionality of Autodos M without prior notice. We accept no liability for any errors in this
manual or any consequences stemming from Autodos M malfunction.
We strive to keep the manual as free from errors as possible. We would therefore be grateful to have any errors or ambiguities
pointed out to us so we can correct them.

MA60-10E

MA60-10E

6

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Autodos M

Autodos M

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6. Safety

To prevent direct contact between the chemicals, separate the chlorine dosing point and the acid/alkali dosing point with at least
500 mm, always ACID BEFORE CHLORINE, refering to the installation example on pages 8–9.

Lock the dosing pumps to the circulation pump using the motor guard or the ow switch.

For best results, use a photometer during calibration.
Proper installation and care is required to prevent invalidation of the warranty.
“Persons (including children) with limited physical or mental capabilities must not use the device without instructions on how to
use it in a safe manner,” as per IEC 60335-1.

7. Installation

General

The system can be installed at any time point without consideration to the life span of the electrodes as these are delivered
separately and can even be delivered at a later point in time.
Install Autodos M at a dry and vibration-free location, against rm, at support and accessible for support and reading.
The display must be well visible and the buttons easily accessible.

The ow cell should be positioned as close to the monitoring point as possible to prevent unnecessarily long response times.
Note the direction of ow.

Check that the electrode kit complies to your Autodos M unit, see point 2 page 12.

If the position of the Autodos puts it at risk of freezing, the ow cell modules must be emptied of all water and the electrodes

must be stored frost-free standing in water (save the electrode packaging for this purpose).

Note! When installing Autodos M with free chlorine electrode in pools where organic chlorine was previously used,
all water must be drained and replaced with new water. This because the cyanuric acid content in the pool water from orga-

nic chlorine (Trichlor or Dichlor) produces a signicantly higher chlorine value in a DPD no. 1 test. This makes correct calibration

impossible.

Installation, pipes

The outlet from the ow cell should be kept free from pressure, e.g. by leading outlet water to an equalization tank or a drain.
For installations in which the ow cell outlet cannot be routed without pressure to a drain or equalization tank, the measurement
water should be sampled after the lter and the return of the pump suction line.

Connections only need to be tightened by hand.
Monitoring and dosing points are most easily made with saddle clamps.
In order to prevent air from being mixed in with the measurement water (which could affect the measurement value), the
measurement connection on the pipes should not sit at the highest point.

MA60-10E

MA60-10E

7

Autodos M

Autodos M

Installationsexempel

Installation example 1: Autodos M1 - chlorine

ENGLISH

ENGLISH

Prelter

Fresh water

lling

Chlorine dosing

Chlorine

PC
Autologger

Equalization
tank

Jet Swim

Lighting Lighting

Filter

Pump

Overow gutter

Inlet

Electric heater

Drain

Check
valve

Installation example 2: Autodos M1 - acid/alkali

PC
Autologger

Acid/alkali dosing

Alt. A

Acid/alkali

Alt. B CO2 dosing

Prelter

Fresh water

lling

Scale

Equalization
tank

Jet Swim

Lighting Lighting

Filter

Pump

Overow gutter

Inlet

Electric heater

Check
valve

MA60-10E

MA60-10E

Drain

8

Autodos M

Autodos M

Installation example 3: Autodos M2

PC
Autologger

Chlorine
dosing

Chlorine

Acid/alkali dosing

Alt. A

Acid/alcali

Alt. B CO2 dosing

Jet Swim

Lighting Lighting

ENGLISH

ENGLISH

Overow gutter

Inlet

Prelter

Fresh water

lling

Scale

Equalization
tank

Installation example 4: Autodos M3

PC
Autologger

Chlorine
dosing

Chlorine

Acid/alcali

Alt. A

dosing

Filter

Pump

Jet Swim

Lighting Lighting

Electric heater

Drain

Overow gutter

Inlet

Check
valve

MA60-10E

MA60-10E

Prelter

Fresh water

lling

Acid/alcali

Alt. B CO2 dosing

Scale

Equalization
tank

Filter

Check
valve

Electric heater

Pump

Avlopp

9

~230VAC Flow/Temp

CTE

Dosing

Redox

pH

35

Autodos M

Autodos M

Installation, electrics

Electrical installation must only be carried out by an authorized electrical installation technician.
Electrical installation must be performed after pipe installation is complete.
The equipment must be permanently grounded and monitored by a residual current device (RCD) with a maximum leakage
current of 30 mA.
The equipment should be supplied via an additional 2-pin switch.

Inputs/outputs for cables as per gure below.

CLE

PB200

View from below

The following example shows how connections are to be made

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Connection example

Connection example - Autodos M1

Current input free chlorine (4–20mA)

Flow meter (white cable)/ – GND current outputs

Current output 1 (pH) 4–20mA (0–20mA)

Current output 2 (redox/chlorine) 4–20mA (0–20mA)

Flow meter (green cable)/NPN in ow switch

PNP in, level switch (alarm upon closed input)

Flow meter (brown cable)/16 VDC PNP input

–GND Temperature sensor

Twin-cable communication with PC

GND free chlorine

24 VDC

PNP in STDBY

Temperature sensor

PB200 chlorine electrode

Chlorine electrode
GND
V–
V+

Connection of ProMinent CLE 3-mA 10ppm

CLE2.2

Terminal 1 (+) to terminal 26
Terminal 2 (–) to terminal 27

Accessories

Modelbus RTU
9600 band, Parity None

Example D:
Current out­put controlled
dosing pump

Example A:
On/Off
controlled
dosing pump

Acid/alkali dosing/chlorine dosing (free)

de-energized state

MA60-10E

MA60-10E

230 VAC L

Alarm (common)

Example C:
Frequency
controlled
dosing pump

10

Autodos M

Autodos M

Connection example - Autodos M2

Current input free chlorine (4–20mA)

Flow meter (white cable)/ – GND current outputs

Current output 2 (redox/chlorine) 4–20mA (0–20mA)

Current output 1 (pH) 4–20 mA (0–20 mA)

GND free chlorine

24 VDC

PB200 chlorine electrode

Chlorine electrode

GND
V–
V+

CLE2.2

Connection of ProMinent CLE 3-mA 10ppm

Terminal 1 (+) to terminal 26
Terminal 2 (–) to terminal 27

Accessories

Modelbus RTU
9600 band, Parity None

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Flow meter (green cable)/NPN in ow switch

PNP in, level switch (alarm upon closed input)

Flow meter (brown cable)/16 VDC PNP input

Twin-cable communication with PC

Chlorine dosing (free)

Connection example - Autodos M3

Current input combined chlorine (4–20mA)

Flow meter (white cable)/ – GND current outputs

Current output 1 (pH) 4–20mA (0–20mA)

Current output 2 (combined chlorine) 4–20mA (0–20mA)

Current output 3 (free chlorine) 4–20mA (0–20mA)

Flow meter (green cable)/NPN in ow switch

PNP in, level switch (alarm upon closed input)

Flow meter (brown cable)/16 VDC PNP input

PNP in STDBY

–GND temperature sensor

Temperature sensor

230 VAC L

Acid/alkali dosing

230 VAC L

Alarm (common)

de-energized state

GND combined chlorine

24 VDC

GND free chlorine

Current input free chlorine (4–20mA)

24 VDC

PNP in STDBY

–GND temperature sensor

Temperature sensor

Twin-cable communication with PC

Example D:
Current
output
controlled
dosing pump

Example A:
On/Off
controlled
dosing pump

Example C:
Frequency
controlled
dosing pump

Connection of ProMinent CTE 1-mA 10ppm

PB200 chlorine
electrode

Chlorine electrode CLE2.2

GND
V–
V+

Terminal 1 (+) to terminal 29
Terminal 2 (–) to terminal 30

Connection of ProMinent CLE 3-mA 10ppm

Terminal 1 (+) to terminal 26
Terminal 2 (–) to terminal 27

Accessories

Modelbus RTU
9600 band, Parity None

Example D:
Current
output
controlled
dosing pump

MA60-10E

MA60-10E

M3 - free chlorine, redox, pH M3 -

230 VAC L

Acid dosing

230 VAC L

Alkali dosing

Chlorine dosing (free)

230 VAC L

Alarm (common)

de-energized state

230 VAC L, Chlorine

dosing (combined)

Chlorine dosing (free)

de-energized state

free chlorine, combined chlorine, pH

230 VAC L

Acid/alkali dosing

230 VAC L

Alarm (common)

11

Example A:
On/Off
controlled
dosing pump

Example C:
Frequency
controlled
dosing pump

230 VAC N

230 VAC L

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Autodos M

Autodos M

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8. Startup guide

This is a short check list with the different steps needed to get started with Autodos. References are given to the sections in the
manual relevant for each step. Still, read through the whole manual to have a complete picture of how the system works and all
its setting possibilities.

1. Install the Autodos unit, see section 7 Installation pipes.

2. Check that you have the correct electrode kit for your valve, see below.

Autodos Elektrodkit

416500 - Free chlorine 416501 - PB200 Free chlorine

416500 - Free chlorine 416502 - CLE3 10ppm Free chlorine

M1

416510 - pH 416511 - pH

416520 - Redox 416521 - Redox

416530 - Total chlorine 416531 - CTE1 Total chlorine

416540 - Free chlorine , pH 416541 - PB200 Free chlorine & pH

416540 - Free chlorine , pH 416542 - CLE3 10ppm Free chlorine & pH

M2

416540 - Free chlorine , pH 416543 - CLE3 20ppm Free chlorine & pH

416550 - Redox, pH 416551 - Redox pH

416560 - Free chlorine , Redox, pH 416561 - Free chlorine PB200, Redox & pH

M3

416560 - Free chlorine , Redox, pH 416562 - Free chlorine CLE3 10ppm, Redox & pH

416570 - Free chlorine , Combined chlorine, pH 416571 - Free chlorine , Combined chlorine, pH

3. Install the electrodes and the installation kit with connector details in the corresponding measuring cell in the valve, see

page 6. An instruction showing how the details of the installation kit shall be connected is included in each respective kit.
NOTE! The electrodes can not be dry or be exposed to frost or quick temperature changes. For more information about the
electrodes, please see the instruction “Handling and care of electrodes” which is enclosed with the electrode kit.

4. Connect the electrode connectors for the water ow for measurements and check that water ows through the valve.

5. Open the faucets for the water ow for measurements and check that water ows through the valve.

6. Turn on the voltage to Autodos M. After a startup time of 60 seconds, the values are shown in each respective channel/dis-

play, see section 9: Operation, page 13.

7. Basic settings, electrodes.

Autodos M has preset factory settings for all types of electrodes that normally corresponds to the electrode combination in

the supplied electrode kit. To check/change electrode type, see further under Systems conguration, pages 21-26.

8. Basic settings, dosage type.

Autodos M can control the dosage equipment either via on/off- frequency- , pulse width- or current control. Which to choose

depends on what dosage product that shall be connected. To check or change dosage type, see further for the specic mod­els under Electrode specic conguration, pages 26-29.

9. Adjust the ow of water for measurement to 30-40 liters/hour with the adjustment screw on the start module. Press the

button ↑ Flow [9] and keep pushing and the current ow is shown in the right display.

10. Calibrate electrodes, see section 10: Calibration, pages 30-32.

11. Let Autodos M run without dosage for around one hour with correct ow of water after the calibration have been done. This is

because the electrodes need to adjust to the measuring water in order for the signals to be stable. Read more under section
9: Handling/choice of dosage, page 15. Normal operating mode: diode “Auto” is lit.

12. Dosage times and response times depends solely on pool volume, turnaround ratio, dosage type, and dosage ratio.

Concentrations of chemicals and dosage products also affects. See section 9: Handling/Settings recommended values,
pages 17-18.

13. Alarm; diodes with ashing lights show active or retset alarms. Pushing the button Reset [15] will shows the type of alarm.

Diodes with a steady red light are acknowledged/active alarms, see section 9: Handling/Alarm diodes, page 20.
If diode “Auto” ashes on the chlorine/redox channel, the pH-value is outside the alarm limits and no dosage is done until
the pH-value is restored within given limits.

14. Maintenance and care; see section 11: Care, page 32. All reference measurements of water quality shall be done with a

digital photometric measuring tool. The measuring water shall always be taken from the draining faucet on Autodos M´s

prelter unit.

MA60-10E

MA60-10E

12

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Autodos M

Autodos M

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9. Operation

Displays, buttons and LEDS – general

The panel is divided into 4 groups. Group 1 (on the left) handles all activities and the others show values and handle limit and
value settings.

Group 1 Group 2 Group 3 Group 4

Button
no..

0 Calibration 1

1 Function selection 2

2 Level – 2

3 Level + 2

4 Function selection 3

5 Level – 3

6 Level + 3

7 Function selection 4

8 Level + / Temp 4

9 Level – / Flow 4

10 Authorization 1

11–14 Activity 1

15 Reset 1

Function Group

The picture shows one example of all Autodos variants.

Displays

Depending on the Autodos M model variant, the values of free chlorine, combined chlorine and/or redox and pH are indecated in
one, two or three separate displays (each with three digits).
The displays can also show simple text messages; see the chapter Text display on page 16.

In some displays different values can be shown in the same eld but then requires certain keystrokes, see page 14.
Under he actual display arrows and explanatory text are found. The position of the decimal point in the display conrms which

type of value is indicated.

The display to the far right can also be used to show ow and temperature.

The displays displays parameters within the following limits:
Free chlorine: –.99–9.99 mg/l (ppm)
Combined chlorine: –.99–9.99 mg/l (ppm)
pH: 4.00–11.0
Redox –99.–999. mV

Temperature: 10 – 40°C

Buttons

Each button has a unique number in the top right-hand corner. In this manual, reference is made to this number with [ ] and the
buttons text reference with bold style e.g. Reset [15].
Further on in this chapter we describe how and what buttons to press in which modes.

LEDs

Function activation is indicated with a green LED and all types of alarms are indicated with a red LED.
Read more about each LED indication on page 15.

MA60-10E

MA60-10E

13

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Autodos M

Autodos M

ENGLISH

Authorization

To avoid unintentional changes to settings and unauthorized use, two authorization codes can be set, see below.

NOTE! Autodos M has no authorization code set when delivered. When necessary this must be activated.

Authorization Explanation

Normal mode No settings can be altered; only Reset is possible
Authorization code 1 Set values, alarm limits and control parameters can be changed. Calibration is also possible.
Authorization code 2 All available changes, including system conguration, are possible.

Activate authorization

If no codes are set, authorization level 2 is accessed automatically when the Code button [10] is pressed. The display then
shows “Cd2”.If authorization code is required “Cd–” is showing.
When the Code button [10] is held depressed, the opening code can be entered using the buttons indicated below:

Autodos M3: Buttons 0–9
Autodos M2: Buttons 0 and 4–9
Autodos M1: Buttons 0 and 7–9

If the entered code is the same as opening code 1 you access authorization level 1 and if the entered code is the same as open­ing code 2 you access authorization level 2 when the Code button [10] is released. This is indicated via the “Code” LED being

illuminated for authorization level 1 and ashing for authorization level 2..

Set/select authorization code

The opening code can only be changed in authorization level 2. If you forgot the code for authorization level 2, it can be dis­played by pressing Code [10] during the start-up sequence (after the countdown of seconds has begun).

Enter the opening code (for authorization level 1 or level 2):

1. Access authorization level 2.with the button Code [10], diode “Code” ashes.

2. Enter calibration mode, with the button Cal [0], diode “Active” light steadily.

3. Hold the button Code [10] depressed and enter the opening code with buttons [0] – [9]. Reset [15] is used to clear the display

and enter up to six digits for the code. The display shows “Cd1” when the button Code [10] is pressed the rst time. “Cd2” is
shown the next time the button is pressed. The display then switches back and forth each time the button is pressed. The text
indicates which code (for authorization level 1 or 2) should be entered.

View/change set values

Press and hold the button Set value [13] (or the button Set alk/Cl [13]) to display the set value

- for free chlorine on display 1

M3

M2

M1

- for combined chlorine/redox on display 2

- for pH on display 3

To change the set value, hold the button [13] depressed while pressing ↑ or ↓ under the relevant display.

Press and hold the button Set value [13] to display the set value

- for chlorine/redox on display 1

- for pH on display 2

To change the set value, hold the button depressed while pressing ↑ or ↓ under the relevant display.

Press and hold the button Set value [13] to display the set value.

To change the set value, hold the button depressed while pressing ↑ [9] or ↓ [8].

View/change alarm limits

HIGH
ALARM

LOW
ALARM

Press and hold the button Alarm high [12] to display the high alarm limit value on the relevant display.

To change the limit value, hold the button depressed while pressing ↑ or ↓ under the relevant display.
At least authorization level 1 is required in order to make changes.

Press and hold the button Alarm low [14] to display the low alarm limit value on the relevant display.
To change the limit value, hold the button depressed while pressing ↑ or ↓ under the relevant display.
At least authorization level 1 is required in order to make changes.

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Showing other information on the display

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Show

Uncalibrated
values

Show

Flow

Show

Temperature

Show

Version

Show

Serial number

Press and hold the Set value [13] (or Set Alk/Cl [13]) and Alarm low [14] buttons simultaneously to show
uncalibrated values on the relevant display.

Press and hold the ↑ Flow button [9] to display ow in litres per hour.

Press and hold the ↓ Temp button [8] to display temperature (in °C).

Press and hold the Alarm high [12] and Alarm low [14] buttons simultaneously to display the program
version.

Press and hold the Function [11] (or Set Acid [11]) and Alarm high [12] buttons simultaneously to display
the factory-programmed serial number.

Dosing selection

Press the Select function button [1], [4] or [7] to switch dosing selection between Off and Auto.

Select

Function

Off No dosing
Auto Automatic dosing based on set parameters (normal setting)
Dosing Indicates dosing (including when there is an error; stopped if there is a dosing time error)

Dosing can be deselected in conguration mode.
To access manual dosing: press and hold the Select function button depressed, then press Set value [13]
button also. (The Set value button [13] is called Set alk/Cl [13] on M3 with redox.)
Deactivate manual dosing by pressing the Select function button.

Other buttons

Press and hold the Reset button [15] to display triggered alarms for the respective channel in the form of a

Reset

Cal.

↑ ↓

brief text. If the button is depressed for less than about one second, the alarms are reset and the common
alarm relay is de-energized. The dosing time counter is always zeroed with a reset.

Press the Cal. button [0] to page in calibration mode between Off – Active – Adjust ...
This is indicated via unlit LEDs (Off), illuminated Active LED or illuminated Active and Adjust LEDs.
(Exit calibration mode by pressing and holding Cal. [0] until the LEDs go out.)

Use the arrow buttons to adjust set values, limits and calibration values on the relevant display.
If an arrow button is held in, a “fast forward” function engages after about one second.

LEDs – dosing indicators

Off Dosing of pH-regulating or chlorine-regulating agent is deactivated.
Auto Dosing of pH-regulating or chlorine-regulating agent is regulated automatically.
Dosing Dosing of pH-regulating or chlorine-regulating agent is in progress.

If neither LED “Off” nor “Auto” is illuminated, then manual dosing is selected. If dosing does not occur at this time (the LED
“Dosing” is not lit), then dosing was deselected at setup. It may also be deactivated due to excessively long dosing time if this
function has been selected. If this is the case the “Alarm” LED will ash also (or be illuminated).

If the pH value is outside of alarm limits, there is an alarm on the chlorine channel if chlorine dosing is active.
Chlorine dosing is stopped until the pH values are once again within permitted limits.

The alarm is indicated via a ashing “Auto” LED on the chlorine channel and the alarm test “PHF” at Reset..

LEDs – alarm indicators

Low ow Insufcient ow in the ow cell.

Alarm High alarm, low alarm, dosing error or ow error.

If the “Alarm” LED ashes, there is an error that has not been cleared. If an error has been cleared but remains active, the LED
is illuminated with a steady glow.

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LEDs – indicators for calibration in progress

Active Calibration in progress; calibration of pH7, pH9 and chlorine zero points possible.

Adjust Calibration in progress; calibration of chlorine values possible.

If the “Active” LED ashes, it indicates you are in conguration mode (see the chapter System conguration on page 21).
To exit conguration mode, press and hold the Cal. button [0] until the “Active” LED stops ashing.

LEDs – indicators for other functions

Code Indicates code mode (change of settings possible), steady = authorization level 1, ashing = authorization level 2.

Stdby Indicates input that switches off alarm and dosing; the alarm relay is activated when the input is activated.

Text on the display

Runtime texts

A list of texts that may be displayed during normal program operation and the contexts in which they occur is found below:

- - - EEP Er1 at rst start-up or EEPROM error; reset gives default setting.

dEL SEC # # # restart performed, # # # indicates the time before start delay is nished.

Error codes

See section 12: Troubleshoting, sid 32.

Start-up sequence

When Autodos M is started up, a text (see below) is shown. The three digits in the text indicate how many seconds are left until
the end of the start-up sequence. The waiting time during start-up is intended to avoid problems with alarms being triggered
because the measurement values have not had time to stabilize, etc. (The start delay can be bypassed by pressing and holding
the Reset button [15] for about one second.)

Autodos M3: ”dEL SEC 059”
Autodos M2: ”SEC 059”
Autodos M1: ”059”

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doser-område

max klor-dos (ca 100 pulser/min)

ca 30 pulser/min

ca 70 pulser/min

ärvärde klor

slut klor-dosering

ärvärde klor

start klor-dosering

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Factory-set system conguration:

Inställning Free chlorine Combined chlorine pH Redox

Set value 1.00 0.50 7.40 740
Low alarm 0.40 0.00 6.80 600
High alarm 2.00 1.00 7.80 800

Adjusting set value – General

Set values etc. that have been set are saved in EEPROM approx. 10 seconds after they are entered. The values are saved
alternatingly in two separate memory areas to avoid errors due to loss of power during the saving phase.

Adjusting set value – Chlorine regulation (free chlorine)

Set value adjustment for free chlorine regulation is carried out by pressing and holding the Set value button [13].
The selected chlorine set value is then shown in the display.

To change the set value, press and hold the button while pressing ↑ or ↓ under the display. Pressing and holding an

arrow button for about one second triggers a “fast forward” function until the button is released.

On/Off controlled chlorine regulation (free chlorine)

Chlorine set valuer

Chlorine dosing start

Chlorine dosing end

Frequency controlled chlorine regulation (free chlorine)

Chlorine set value

Dosing
range

approx 30 pulses/min

approx 70 pulses/min

Chlorine actual value

Chlorine actual value

Max. chlorine dosing
(approx. 100 pulses/min)*

Dosing range indicates the interval within which dosing is steplessly changed (pband) between 0 pulses/min and max. number

of pulses/min. Adjustment of dosing range size is done in electrode specic conguration mode (see separate chapter).
If the actual value (in gure) is greater than the chlorine set value, there is no chlorine dosing (0 pulses/min).

If actual value = (set value - dosing range) there is full dosing (approx. 100 pulses/min). In the range between the two, dosing is

modied based on the actual value. For example, if the actual value is in the middle of the dosing range, half-dosing is carried

out (approx. 50 pulses/min).

Adjusting set value – Chlorine regulation (combined chlorine)

The procedure is the same as that for free chlorine, except that the arrows [5] and [6] under display 2 are used and regulation is
done against the measurement value for combined chlorine.

* Default value. Adjustable to max. 180 pulses/minute

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bas-dosering

ärvärde

syra-dosering

doser-område

max bas-dos (ca 100 pulser/min)

ärvärde

max syra-dos

ca 30 pulser/min

ca 60 pulser/min

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Adjusting set value – pH regulation

Set value adjustment for pH regulation is carried out by pressing and holding the Set value button [13].
The selected pH set value is then shown in the display. To change the set value, hold the button depressed while pressing

↑ or ↓ under display 3. Pressing and holding an arrow button for about one second triggers a “fast forward” function until the

button is released.

The gures below show dosing with both pH-elevating (alkali) and pH-lowering (acid) agent. The principle is the same, but the

direction is reversed.

On/Off controlled pH regulation

Acid set value
Alkali set value

Frequency controlled pH regulation

Acid set value

Acid dosing

Max. acid dosing

Actual value pH

Alkali dosing

pH actual value

Dosing range

P-band* indicates the range within which dosing is steplessly changed from 0 to maximum dosing. In the example above,
acid is dosed when the actual value (= pH value) is greater than the set value. Acid and alkali are dosed when the actual value
is less than the alkali set value.
At maximum dosing, the dosing pump gives max. frequency* strokes/minute.
Presume there is acid dosing (pH value = 7.54, acid set value = 7.40), P regulation (P-band = 0.20) and frequency dosing
(max. frequency = 50 strokes/minute). Dosing is then calculated as follows:
Does = (pH actual value – acid set value) / P-band x Max. frequency = (7.54–7.40) / 0.20 × 50 = 35 strokes/minute.
If the dose as calculated above is negative, 0 strokes/minute is dosed. If the dose is greater than 50, then 50 strokes/minute
is dosed.

* set in “Electrode specic conguration”.

** Default value. Adjustable to max. 180 pulses/minute

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Alkali set value

approx. 30 pulses/min

approx. 70 pulses/min

Max. alkali dosing
(approx. 100 pulses/min)**

18

börvärde

gränsvärde för höglarm

ärvärde

larmtidpunkt

börvärde

gränsvärde för låglarm

ärvärde

larmtidpunkt

Autodos M

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Setting high alarm

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Actual value

Alarm time point

Set value

High alarm setting is done by pressing and holding the Alarm high button [12]. The high alarm limits for free chlorine, combined
chlorine and pH are then displayed in the measurement value windows.

To change the limit, press and hold the button while pressing ↑ or ↓ for the relevant channel.

Pressing and holding an arrow button for about one second triggers a “fast forward” function until the button is released.

High alarm limits can be adjusted within the intervals:
free chlorine -.99 – 9.99 ppm
combined chlorine -.99 – 9.99 ppm
pH -.99 – 9.99

High alarm limit value

Setting low alarm

Actual value

Set value

Alarm time point

Low alarm setting is done by pressing and holding the Alarm low button [14]. The low alarm limits for free chlorine, combined
chlorine and pH are then displayed in the measurement value windows.

To change the limit, press and hold the button while pressing ↑ or ↓ for the relevant channel.

Pressing and holding an arrow button for about one second triggers a “fast forward” function until the button is released.

Low alarm limits can be adjusted within the intervals:
free chlorine -.99 – 9.99 ppm
combined chlorine -.99 – 9.99 ppm
pH -.99 – 9.99

Low alarm limit value

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Alarm diodes

The alarm diodes indicate an alert with a ashing light. The alarm relay is an alternating contact free from electric potential.
It alternates when the diode is ashing (this means that a shut off unit indicates an alarm). Upon reset/acknowledgement of

alarm, the alarm relay alternates back but the alarm diode continues to be lit if the alarm is still active or is shut off if no alarm is

active. Indications are made for low alarms, high alarms, dosage errors and ow errors.

Dosing is affected by alarm as follows:

Flow error stops all dosing (starts when ow is correct)

Low alarm pH stops chlorine dosing (starts when value is within limits)

High alarm pH stops chlorine dosing (starts when value is within limits)

Low alarm redox / chlorine no effect on dosing

High alarm redox / chlorine no effect on dosing

Low alarm free/combined chlorine no effect on dosing

High alarm free/combined chlorine no effect on dosing

Dosing error pH stops all dosing (starts after Reset)

Dosing error free/combined chlorine stops chlorine dosing (starts after Reset)

Alarm level switch no effect on dosing

All alarms have a 5-second delay

Alarm delay

The high and low alarms have a delay of 5–600 seconds (set in electrode-specic conguration).
The ow switch alarm has a delay of 0–30 minutes (set in system conguration).

This is how the alarm delay works

• Delay time is counted up when an “alarm condition” applies.

• Delay time is counted down when an “alarm condition” does not apply.

• “Alarm” is activated (LED ashes) when delay time has reached the set delay time limit.

• “Alarm” is deactivated when the alarm is reset with the Reset button [15] and when delay time has been counted down to zero.

Alarm relay delay

The alarm relay has a delay of 0–30 minutes (set in system conguration). Function as follows:

• The delay time is counted up when there is an alarm that has not been reset and when the alarm delay time has not been
zeroed.

• The delay time is reset when it is not counted up (as per condition above).

• The alarm relay is activated when the delay time has reached the set delay time limit.

• Reset [15] deactivates the alarm relay and resets the delay time.

Alarm reset

Alarm reset is carried out by pressing and holding the Reset button [15] for about one second until the LEDs stop ashing (and
the alarm relay is de-energized).
While the Reset button [15] is held depressed, the display(s) show text indicating which alarms were active when the button was

pressed (see chapter Troubleshoting on page 32, there you nd all alarm codes and what they mean).

If several alarms are active, these are displayed at a 1-second interval.
The acknowledged, non-active alarms disappear when the button is released. Pressing the button again will display the
remaining active alarms.
Reset is not possible while Autodos M is in calibration mode.
The dosing time counter is always zeroed with a reset.

Showing uncalibrated values

Display of the factory-calibrated values (as if no calibration was carried out since delivery from the factory) can be carried out by
pressing the Function [11] and Alarm low [14] buttons simultaneously (also works during calibration).
NOTE: On Autodos M3 with acid/alkali dosing, these buttons are called Set acid [11] and Alarm low [14].
The function is a good troubleshooting aid if the electrodes are not functioning normally.
This function helps troubleshooting if the electrodes do not work as intended.

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Systems conguration

General

In the cases where another setting than the pre-programmed factory settings is desired, conguration mode needs to be
entered. To enter conguration mode, authorisation level 2 must be activated with a code and calibration mode shall be activated.

(No access code is programmed in factory settings.)

The systems conguration consists of two parts: Basic functions with shared settings and Electrode specic conguration
for the respective channel settings.

Enter conguration mode

Press the button Code [10], enter the opening code. Release the button. The diode “Code” ashes as conrmation.
Press the button Cal. [0] to enter conguration mode. The diode “Active” illuminates as conrmation.

There are different conguration modes depending on the Autodos model used, but all have a common mode where entered
settings affect the basic functions and one mode with specic settings for the respective electrodes.

Conguration of basic functions

Proceed as follows to congure all channels:

Model Autodos M3 - free chlorine, redox, pH: press the buttons Set acid [11] + Reset [15].
On all other models: press the buttons Function [11] + Reset [15].
This is indicated via the text “SEt UP” and the “Off” and “Auto” LEDs being unlit.

To exit conguration, press the Cal. button [0] or scroll past the last line.
The following can be changed in the common conguration; see relevant model pages 22–26.

Autodos M1

Select the line for which you want to change the setting on by pressing Alarm high [12] or Alarm low [14] button.
When the button Alarm high [12] or Alarm low [14] is held depressed, the display shows the actual line number.
When the buttons are released, the display shows either a text indicating which setting can be changed or a numeric value.

To change a text or value, press ↑ or ↓ .
The selected conguration type is indicated via one of the following texts: ”SEt”, ”FCL”, ”ACi” or ”bAS” depending on variant.

Autodos M2 and M3

Select the line for which you want to change the setting on by pressing ↑ or ↓ under display 2.
When the arrow button is held depressed, display 3 shows the actual line number and display 2 shows the selected congu-

ration type (e.g. “SET” “-01”).
When the buttons are released, display 2 shows a text indicating which setting can be changed and display 3 shows a text or
a numeric value.

To change a text or value, press ↑ or ↓ under the relevant display.

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Conguration – Autodos M3 free chlorine, combined chlorine, pH

Line Text Setting Explanation

-01 FLo Selection of ow switch and alarm for low ow.

oFF No ow switch. Flow alarm OFF.

Son Flow switch that closes with ow. Flow alarm ON.

Pof Turbine ow meter. Flow alarm OFF.

Pon* Turbine ow meter. Flow alarm ON.

-02 FCL Selection of electrode type for chlorine measurement.

Pb* PB200 or CLE2.2

Cur 4–20mA sensor, e.g. CLE3

-03 C-P Selection of function for relay output 2, DOS2.
CCh = Combined chlorine/rHF, rLF, rH-, rL- = freely programmed.

CCh* Doses when: actual value > set value. Blocked by pH alarm, ow alarm.

rHF Doses when: actual value > set value. Blocked by ow alarm.

rLF Doses when: actual value < set value. Blocked by ow alarm.

rH- Doses when: actual value > set value.

rL- Doses when: actual value < set value.

-04 FCC Selection of compensation of free chlorine against ow and/or pH..

non No compensation.

Flo Compensated against ow.

PH- Compensated against pH.

FPH* Compensated against ow and pH.

-05 PHd Selection of pH-adjusted dosing.

ACi* Doses acid (doses when actual value > set value).

bAS Doses alkali (doses when actual value < set value).

-06 PHc Selection of pH calibration point 2.
Calibration point 1 = pH 7.00

PH9* Calibration point 2 = pH 9.00

PH4 Calibration point 2 = pH 4.00

-07 PC Setting of access from PC.

No* No access (display only).

rES Alarm reset only.

Prg Fully programmable.

-08 Sio 001-255 (001*) Selection of Modbus ID number.

-09 FLd 000-030 (000*) [minutes] Flow alarm delay time.

-10 rEL 000-030 (000*) [minutes] Alarm relay delay time.

-11 SbY The SbY input blocks all dosing plus the alarm relay.

rEL* Activates the alarm.

non Does not activate the alarm.

* Factory default!

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Conguration – Autodos M3 free chlorine, redox, pH

Line Text Setting Explanation

-01 FLo Selection of ow switch and alarm for low ow.

oFF No ow switch. Flow alarm OFF.

Son Flow switch that closes with ow. Flow alarm ON.

Pof Turbine ow meter. Flow alarm OFF.

Pon* Turbine ow meter. Flow alarm ON.

-02 FCL Selection of electrode type for chlorine measurement.

Pb* PB200, CLE2.2 or redox.

Cur 4–20mA sensor e.g. CLE3.

-03 FCC Selection of compensation of free chlorine against ow and/or pH.

non No compensation.

Flo Compensated against ow.

PH- Compensated against pH.

FPH* Compensated against ow and pH.

-04 PHc Selection of pH calibration point 2.

Calibration point 1 = pH 7.00

PH9* Calibration point 2 = pH 9.00

PH4 Calibration point 2 = pH 4.00

-05 PC Setting of access from PC.

No* No access (display only).

rES Alarm reset only.

Prg Fully programmable.

-06 Sio 001-255 (001*) Selection of Modbus ID number

-07 FLd 000-030 (000*) [minuter] Flow alarm delay time.

-08 rEL 000-030 (000*) [minuter] Alarm relay delay time.

-09 SbY The SbY input blocks all dosing plus the alarm relay.

rEL* Activates the alarm.

non Does not activate the alarm.

* Factory default!

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Conguration - Autodos M2 free chlorine/redox, pH

Line Text Setting Explanation

-01 FLo Selection of ow switch and alarm for low ow.

oFF No ow switch. Flow alarm OFF.

Son Flow switch that closes with ow. Flow alarm ON.

Pof Turbine ow meter. Flow alarm OFF.

Pon* Turbine ow meter. Flow alarm ON.

-02 FCL Selection of electrode type for chlorine measurement.

Pb* PB200, CLE2.2 or redox

Cur 4–20mA sensor e.g. CLE3

-03 C-o Selection of chlorine or redox measurement

FCL* Free chlorine

orP Redox

-04 FCC Selection of compensation of free chlorine against ow and/or pH.

non No compensation.

Flo Compensated against ow.

PH- Compensated against pH.

FPH* Compensated against ow and pH

-05 PHd Selection of pH-adjusted dosing.

ACi* Doses acid (doses when actual value > set value).

bAS Doses alkali (doses when actual value < set value).

-06 PHc Selection of pH calibration point 2.

Calibration point 1 = pH 7.00

PH9* Calibration point 2 = pH 9.00

PH4 Calibration point 2 = pH 4.00

-07 PC Setting of access from PC.

No* No access (display only).

rES Alarm reset only.

Prg Fully programmable.

-08 Sio 001-255 (001*) Selection of Modbus ID number

-09 FLd 000-030 (000*) [minutes] Flow alarm delay time.

-10 rEL 000-030 (000*) [minutes] Alarm relay delay time.

-11 SbY The SbY input blocks all dosing plus the alarm relay.

rEL* Activates the alarm.

non Does not activate the alarm.

* Factory default!

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Conguration - Autodos M1 chlorine

Line Text Setting Explanation

-01 FLo Selection of ow switch and alarm for low ow.

oFF No ow switch. Flow alarm OFF.

Son Flow switch that closes with ow. Flow alarm ON.

Pof Turbine ow meter. Flow alarm OFF.

Pon* Turbine ow meter. Flow alarm ON.

-02 FCL Selection of electrode type for chlorine measurement.

Pb* PB200 or CLE2.2

Cur 4–20mA sensor e.g. CLE3

-03 PC Setting of access from PC.

No* No access (display only).

rES Alarm reset only.

Prg Fully programmable.

-04 Sio 001-255 (001*) Selection of Modbus ID number

-05 FLd 000-030 (000*) [minutes] Flow alarm delay time.

-06 rEL 000-030 (000*) [minutes] Alarm relay delay time.

-07 SbY The SbY input blocks all dosing plus the alarm relay.

rEL* Activates the alarm.

non Does not activate the alarm.

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* Factory default!

Conguration - Autodos M1 redox

Line Text Setting Explanation

-01 FLo Selection of ow switch and alarm for low ow.

oFF No ow switch. Flow alarm OFF.

Son Flow switch that closes with ow. Flow alarm ON.

Pof Turbine ow meter. Flow alarm OFF

Pon* Turbine ow meter. Flow alarm ON.

-02 PC Setting of access from PC.

No* No access (display only).

rES Alarm reset only.

Prg Fully programmable.

-03 Sio 001-255 (001*) Selection of Modbus ID number

-04 FLd 000-030 (000*) [minutes] Flow alarm delay time.

-05 rEL 000-030 (000*) [minutes] Alarm relay delay time.

-06 Sby The Sby input blocks all dosing relays.

Also select whether it should activate the alarm relay.

rEL* Activates the alarm.

non Does not activate the alarm.

* Factory default!

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Conguration - Autodos M1 pH

Line Text Setting Explanation

-01 FLo Selection of ow switch and alarm for low ow.

oFF No ow switch. Flow alarm OFF.

Son Flow switch that closes with ow. Flow alarm ON.

Pof Turbine ow meter. Flow alarm OFF.

Pon* Turbine ow meter. Flow alarm ON.

-02 PHd Selection of pH-adjusted dosing.

ACi* Doses acid (doses when actual value > set value).

bAS Doses alkali (doses when actual value < set value).

-03 PHc Selection of pH calibration point 2.

Calibration point 1 = pH 7.00

PH9* Calibration point 2 = pH 9.00

PH4 Calibration point 2 = pH 4.00

-04 PC Setting of access from PC.

No* No access (display only).

rES Alarm reset only.

Prg Fully programmable.

-05 Sio 001-255 (001*) Selection of Modbus ID number

-06 FLd 000-030 (000*) [minutes] Flow alarm delay time.

-07 rEL 000-030 (000*) [minutes] Alarm relay delay time.

-08 Sby The Sby input blocks all dosing plus the alarm relay.

rEL* Activates the alarm.

non Does not activate the alarm.

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* Factory default!

Electrode-specic conguration – general

To access conguration mode, see page 19.

NOTE! Before starting up check the setting for electrode-specic conguration; row -01 for each channel (redox / chlorine / pH):

This must correspond to the electrical connection of the dosing equipment (On/Off or Frequency dosing) for each connection
example. If that does not conform it will cause damage to the circuit board.

NOTE! Dosing should not be charged with 230VAC when selecting the type of dosing Frequency control.

The following button combinations are used to enter the different conguration modes:

All M1, M2 and M3 models - Free chlorine, combined chlorine, pH

Basic functions: Function [11] + Reset [15]

Conguration for electrode 1: Set value [13] + Select function [1]

Conguration for electrode 2: Set value [13] + Select function [4]

Conguration for electrode 3: Set value [13] + Select function [7]

M3 - Free chlorine, redox, pH

Basic functions: Set acid [11] + Reset [15]

Conguration for electrode 1: Set alk/Chl [13] + Select function [1]

Conguration for electrode 3 (acid): Set acid [11] + Select function [7]

Conguration for electrode 3 (alkali): Set alk/Chl [13] + Select function [7]

Flashing LEDs conrm which conguration mode you accessed when the buttons are released: Active conguration is indicated

by the “Active” LED ashing. If any of the electrode-specic conguration modes are active, the LEDs “Off” and “Auto” ash for
the relevant electrode.

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Electrode-specic conguration - free chlorine/redox (PB200, CLE 3, Jesco, Redox)

For conguration of free chlorine electrodes.

Autodos M3 model - Free chlorine, redox, pH: press the buttons Set alk/Cl [13] + Select function [1].
For all other models: press the buttons Set value [13] + Select function.

This is indicated via the text “SEt FCL” and ashing of the “Off” and “Auto” LEDs.
To exit conguration, press the Cal. button [0] or scroll past the last line.

Autodos M2 and M3

Select the desired line with the ↑ or ↓ button under the relevant display.
While the ↑ or ↓ button is depressed, display 2 shows the selected conguration type (e.g. “FCL” “-01”) and display 3 shows

the actual line number.
When the button is released, display 2 shows a text indicating which setting can be changed and display 3 shows a text or a
numeric value.

To change a text or value, press ↑ or ↓ under the relevant display.
The selected conguration is indicated via one of the following texts: “SEt”, “FCL”, “CCL”, “ACi” or “bAS”.

Autodos M1

Select the line for which you want to change the setting by pressing the Alarm high [12] or Alarm low [14] button.
When the Alarm high [12] or Alarm low [14] button is held depressed, the display shows the actual line number.

When the button is released, the display shows either a text or a numeric value. To change a text or value, press ↓ or ↑ .
The selected conguration is indicated via one of the following texts:: “SEt”, ”FCL”, ”ACi” or ”bAS” depending on type.

The following can be modied in the channel-specic conguration – Free chlorine:

Line Text Setting Explanation

-01 doS Selection of dosing outlet and function.

oFF No dosing.

ono* On-/Off-dosing.

Pdo Pulse width dosing..

FrE Frequency dosing..

Cur Dosing via current output..

-02 P 0.10–2.00 (0,20*) ppm P-band. (Pdo, FrE, Cur)

-03 I 000–100 (000*) minutes I-time, 000 = no I-regulation. (Pdo, FrE, Cur)

-04 d 000–100 (000*) seconds D-tid, 000 = no D-regulation. (Pdo, FrE, Cur)

-05 dF 010–180 (100*) strokes/minute Max. frequency dosing. (FrE)

-06 Pdo 005–015 (010*) minutes Pulse width during pulse width dosing. (Pdo)

-07 Ldt 000–060 (000*) minutes Long dosing time alarm, 0 = no function.

-08 oFt 000–600 seconds Min. time OFF for relay, 0 = no function. (ono)

-09 ont 000-600 seconds Min. time ON for relay, 0 = no function. (ono)

-10 Cur - - 0 / - - 4 (- - 4*) Current output, selection of range 0–20mA / 4–20mA.

-11 C-L 0.00–9.99 (0.00*) ppm Current output, value for 0/4mA.

-12 C-H 0.00–9.99 (5.00*) ppm Current output, value for 20mA.

-13 AHd 005–600 (005*) seconds Delay time for high alarm.

-14 ALd 005–600 (005*) seconds Delay time for low alarm.

* Factory default!

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Electrode-specic conguration – combined chlorine (CTE 1)

For conguration of total chlorine electrodes, press the buttons Set value [13] + Select function. This is indicated via the text
“SEt CCL” and ashing of the “Off” and “Auto” LEDs.
To exit conguration, press the Cal. button [0] or scroll past the last line.

The following can be modied in the channel-specic conguration – Combined chlorine:

Line Text Setting Explanation

-01

-02 P 0.10–2.00 (0.20*) ppm P-band. (Pdo, FrE, Cur)

-03 I 000–100 (000*) minutes I-time, 000 = no I-regulation. (Pdo, FrE, Cur)

-04 d 000–100 (000*) seconds D-time, 000 = no D-regulation. (Pdo, FrE, Cur)

-05 dF 010–180 (100*) strokes/minute Max. frequency dosing. (FrE)

-06 Pdo 005–015 (010*) minutes Pulse width during pulse width dosing. (Pdo)

-07 Ldt 000–060 (000*) minutes Long dosing time alarm, 0 = no function.

-08 oFt 000–600 (000*) seconds Min. time OFF for relay, 0 = no function. (ono)

-09 ont 000–600 (000*) seconds Min. time ON for relay, 0 = no function. (ono)

-10 Cur - - 0 / - - 4 (- - 4*) Current output, selection of range 0–20mA / 4–20mA.

-11 C-L 0.00–9.99 (0.00*) ppm Current output, value for 0/4mA.

-12 C-H 0.00–9.99 (5.00*) ppm Current output, value for 20mA.

-13 AHd 005–600 (005*) seconds Delay time for high alarm.

-14 ALd 005–600 (005*) seconds Delay time for low alarm.

doS Selection of dosing outlet and function.

oFF No dosing.

ono* On/Off dosing.

Pdo Pulse width dosing.

FrE Frequency dosing.

Cur Dosing via current output.

* Factory default

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Electrode-specic conguration – pH

For conguration of pH electrodes.

Autodos M1-3 with acid or alkali dosing: press the buttons Set value [13] + Function [11].
Autodos M3 with acid dosing: press the buttons Set acid [11] + Select function [7].
Autodos M3 with alkali dosing: press the buttons Set alk/chlor [13] + Select function [7].

This is indicated via the text “SEt ACi” or “SEt bAS” (depending on whether acid or alkali dosing is selected) and ashing of the
“Off” and “Auto” LEDs.
To exit conguration, press the Cal. button [0] or scroll past the last line.

The following can be modied in the channel-specic conguration – pH:

Line Text Setting Explanation

-01

-02 P 0.10–2.00 (0.20*) pH P-band. (Pdo, FrE, Cur)

-03 I 000–100 (000*) minutes I-time, 000 = no I-regutlation. (Pdo, FrE, Cur)

-04 d 000–100 (000*) secondes D-time, 000 = no D-regulation. (Pdo, FrE, Cur)

-05 dF 010–180 (100*) strokes/minute Max. frequency dosing. (FrE)

-06 Pdo 005–015 (010*) minutes Pulse width during pulse width dosing. (Pdo)

-07 Ldt 000–060 (000*) minutes Long dosing time alarm, 0 = no function.

-08 oFt 000–600 (000*) seconds Min. time OFF for relay, 0 = no function. (ono)

-09 ont 000–600 (000*) seconds Min. time ON for relay, 0 = no function. (ono)

-10 Cur - - 0 / - - 4 (- - 4*) Current output, selection of range 0–20 mA/4–20 mA.

-11 C-L 0.00–9.99 (6.00*) pH Current output, value for 0/4 mA

-12 C-H 0.00–9.99 (8.50*) pH Current output, value for 20 mA.

-13 AHd 005–600 (005*) seconds Delay time for high alarm.

-14 ALd 005–600 (005*) seconds Delay time for low alarm

doS Selection of dosing outlet and function.

oFF No dosing.

ono* On-/Off-dosing.

Pdo Pulse width dosing.

FrE Frequency dosing.

Cur Dosing via current output.

* Factory default!

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10. Calibration

To access calibration mode, authorization level 1 is required at a minimum, i.e. the “Code” LED must be illuminated or ash.

During calibration, no settings can be made and high alarm, low alarm and ow alarm are not activated. Automatic dosing is

stopped during calibration.

Calibration mode “Active” is accessed by pressing and holding the Cal. button [0] until the “Active” LED illuminates. Dosing
stops automatically during calibration and output signals on the current outputs are frozen at the last measured value before
calibration.
In calibration mode “Active” calibration of pH7, pH9 and chlorine zero points is possible.

Calibration mode “Adjust” is accessed by pressing and holding the Cal. button [0] until the “Adjust” LED illuminates (presuming
the “Active” is already lit). If combination with pH exists, no pH value is displayed. “- - -” is instead displayed to indicate that pH
calibration is not possible.

Calibration mode “Off” is accessed by pressing and holding the Cal. button [0] until the “Adjust” and “Active” LEDs go out.

To exit code mode, press the Code button [10]. The LED goes out as conrmation.

Calibration - pH

Calibration is done at two points – normally pH7 and pH9.

1. Activate calibration mode “Active”.

2. Take the cleaned and rinsed pH electrode and place it in the pH7 calibration solution (not in the buffer bottle).
Move the electrode up and down for a good reading. Give the measurement value time to stabilize (5-30 seconds).
Then press the calibration button pH7 [8] until the display shows “- - -”.

3. Rinse the electrode and then place it in the pH9 calibration solution (not in the buffer bottle). Move the electrode up and down
a little for a good reading. Give the measurement value time to stabilize (5-30 seconds). Then press the calibration button
pH9 [9] until the display shows “- - -”.

4. pH calibration is complete. Exit calibration mode by pressing the Cal. button [0] twice until the “Adjust” and “Active” LEDs
go out.

5. Discard used buffer solution after calibration.

NOTE: If the signal during two points calibration deviates too greatly from the expected values, electrode error is
indicated with the text “EL1”, “EL2”, “EL3” or “EL4” while the calibration button is held depressed.
When the button is released, Autodos M uses the calibration values that applied before the failed calibration attempt.

Text meaning:

EL1 active electrode error 1 (low calibration point < min)

EL2 active electrode error 2 (low calibration point > max)

EL3 active electrode error 3 (high calibration point < min)

EL4 active electrode error 4 (high calibration point > max)

Calibration - redox

The redox value is only calibrated at one measuring point. No reinforcement calibration is necessary for redox electrodes.
The calibration can be done at any known redox value. The calibration value is adjustable +/- 50mV relative to the uncalibrated
redox value.

1. Activate calibration mode by pressing the button Cal. [0] until the diode ”Active” is lit.

2. Put the cleaned and rinsed redox electrode in a reference liquid with known redox value. Let the measured value stabilise.

3. Press the button Cal. [0] until the diode ”Adjust” is lit. The equipment then stores the latest measured electrode signal.

4. Adjust the redox value with the buttons ↑ and ↓ under display 2 according to the current reference liquid.

5. Exit calibration mode by pressing the button Cal. [0] until the diode ”Adjust” is shut off.

6. Reinstall the electrode into the valve. Let the measured value stabilise for around one hour.

7. Activate dosage mode.

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Some buffer solutions for redox and approximate readings:

Mixture Redox potential

at 20°C at 25°C at 30°C

Buffer pH 2 + quinhydrone 385 mV 381 mV 377 mV

Buffer pH 4 + quinhydrone 268 mV 263 mV 258 mV

Buffer pH 7 + quinhydrone 92 mV 86 mV 79 mV

Buffer pH 8 + quinhydrone 33 mV 27 mV 19 mV

Mix one dose of quinhydrone powder in 20 ml buffer uid. Stir it weill untill the solution is saturated.

Note: Quinhydrone solution is unstable and must be discarded after use. The time required for stabilization of the new measure­ment value is an indication of electrode condition as age and contamination increase stabilization time.

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Calibration Chlorine

Calibration of chlorine electrodes shall be done with a measured value of the water in direct connection to Autodos and with a
digital photometric instrument. If the pool water is dosed or has been dosed with organic chlorine containing isocyanuric acid,
the pool water shall be controlled. The level of cyanuric acid can not exceed 5mg/l (ppm). An increased level will give lowered
free chlorine signals which affects calibration, measuring and control of relevant cannel.

Chlorine electrodes are ow dependent and the ow through the valve shall be adjusted to 30-40 liters/minute.

Zero point calibration

Zero point calibration should be done, see 2 under Calibration/Chlorine. An inaccurate zero point will give errors in calibrations
and display of chlorine values.

Lift the electrode (with the electrode cabel connected) from the valve, wait for one minute.
If the chlorine display shows other than 0,00: Activate calibration mode by pressing and holding the Cal. button [0] until the “Ac-
tive” LED illuminates.

Press the button ↓ for 4 seconds until the display shows: -, -, -, - - -, after that the calibration is done. To reset the zero point
calibration to factory mode, press the button ↑ for 4 seconds until the display shows: F, F, F, FFF, after that the reset is done.

NOTE! If the signal at zero point calibration deviates too much from the expected value, electrode error will be indicated with the
text ”EL1”, ”EL2” during the time the calibration button is pushed.
When the button is released, Autodos M uses the calibration values that applied before the failed calibration attempt.

Meaning of the texts:

EL1 active electrode error 1 (low calibration point < min)

EL2 active electrode error 2 (low calibration point > max)

Calibration – free chlorine: PB-200 chlorine electrode

(Gain calibration)
The reinforcement mode is limited both upwards and downwards by levels of reasonable electrode signal.

1. Activate calibration mode by pressing and holding the Cal. button [0] until the “Active” LED illuminates.

2. Zero point calibration is carried out by lifting the electrode out of the ow cell, waiting about 1 minute and then pressing the ↓

button under display 1. Before calibration to the laboratory-measured value is possible, the electrode must be 3. retted in the
ow cell and allowed to measure in the cell for about 2 minutes to obtain a correct value.

3. Access calibration mode by pressing and holding the Cal. button [0] until the “Adjust” LED illuminates. The meter stores the
last measured electrode signal.

4. Take a water sample and determine the correct chlorine value with DPD1.

5. Set the correct chlorine value with the ↑ and ↓ buttons under display 1..

6. Exit calibration mode by pressing and holding the Cal. button [0] until the “Adjust” and “Active” LEDs go out.

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Calibration – free chlorine: Prominent 4-20mA chlorine electrode CLE 3-mA-10pp

(Gain calibration)

1. Activate calibration mode by pressing and holding the Cal. button [0] until the “Active” LED illuminates.

2. Zero point calibration is carried out by placing the electrode in chlorine-free water or in the air. Wait about 1 hour and then

press the ↓ button under display 1. Before calibration can continue, the electrode must be allowed to measure in the ow

cell for about 5 minutes to obtain a correct value.

3. Access calibration mode by pressing and holding the Cal. button [0] until the “Adjust” LED illuminates.
The meter stores the last measured electrode signal.

4. Take a water sample and determine the correct chlorine value with DPD1.

5. Set the correct chlorine value with the ↑ and ↓ buttons under display 1.

6. Exit calibration mode by pressing and holding the Cal. button [0] until the “Adjust” and “Active” LEDs go out.

Calibration – combined chlorine

Combined chlorine is a calculated value (total chlorine – free chlorine).
In calibration mode, TOTAL chlorine (i.e. free + combined chlorine) is shown on display 2 and calibration is done on TOTAL
chlorine (DPD1 + DPD3).

Calibration – combined (total) chlorine:
ProMinent 4–20mA chlorine electrode CTE 1-mA-10ppm

(Gain calibration)

1. Activate calibration mode by pressing and holding the Cal. button [0] until the “Active” LED illuminates.

2. Zero point calibration is carried out by placing the electrode in chlorine-free water or in the air. Wait about 1 hour and then

press the ↓ button under display 2. Before calibration can continue, the electrode must be allowed to measure in the ow

cell for about 5 minutes to obtain a correct value.

3. Access calibration mode by pressing and holding the Cal. button [0] until the “Adjust” LED illuminates.
The meter stores the last measured electrode signal.

4. Take a water sample and determine the correct chlorine value with DPD 1 and then DPD 3.

5. Set the correct chlorine value with the ↑ and ↓ buttons under display 2.

6. Exit calibration mode by pressing and holding the Cal. button [0] until the “Adjust” and “Active” LEDs go out.

11. Maintenance

Flow cell

On a daily basis, check that the water ows as it should. Flow should be approx. 30 litres per hour.
Clean the water lter before the ow cell as necessary.

Electrodes

Refer to the electrode manual.

Water quality

As water quality varies and electrodes wear over time, measurement values should be checked regularly.
Water samples should be made with photometric equipment to ensure that the pool water is within recommended limits.
If the electrode value deviates from the pool water value, a recalibration must be done.

Two-point calibration (i.e. both zero point and amplication calibration) is carried out upon initial start-up and when electrodes

are replaced.

12. Troubleshooting

Error codes

Code Cause

EL1 active electrode error 1 (low calibration point < min)

EL2 active electrode error 2 (low calibration point > max)

EL3 active electrode error 3 (high calibration point < min)

EL4 active electrode error 4 (high calibration point > max)

noC chlorine value too low; calibration not possible

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Error Probable cause Action

Meter completely dead No power supply. Check the electrical connection.
Measurement value

uctuates greatly
up and down..

Incorrect measurement
values
(pH or chlorine).

Calibration cannot be carried Defective electrode Replace the electrode.

Electrodes give sluggish
but correct value in buffer
solution but incorrect during
measurement

Measurement value stuck at
pH = 7 and 0 mV or 0 mg/l

Meter is not dosing, dosing
lamp is not illuminated or

AUTO is ashing.

The meter is not dosing, the
dosing lamp is illuminated.

Incorrect chlorine measure­ment values

(Prominent measuring cell).

Chlorine value too low to be
adjusted to measured value

(Prominent measuring cell).

Incorrect chlorine measure­ment values

(PB-200 measuring cell).

Chlorine value shows zero all
the time

(PB-200 measuring cell).

No “click” during dosing;
dosing lamp is illuminated.

(Frequency controlled dosing).

Electrode not connected. Check the connection.
Cable fault. Check the cable.
Electrode without measurement water. Check the ow cell
Dirty electrode. Clean the electrode.
Incorrectly calibrated meter. Carry out calibration with fresh buffer solution.
Defective electrode. Try shaking the electrode (if there is an air bubble

in the glass ball); otherwise replace the electrode.

Poor contact with the meter. Check the cables, including the cables on the

inside connecting the BNC connectors on the out-

side with the circuit board.
Defect buffer solution. Check the buffer solution.
Dirty electrode. Clean the electrode.
Electrode used up. Replace the electrode.

Short-circuit of measurement signal. Check electrode, cables and connections.

Meter in “manual” mode. Put the meter in “auto” mode.
“PHF” error. Determine the cause and reset the alarm; chlorine

dosing starts when the pH value is correct.
Dosing equipment is not connected cor-

rectly.
Dosing relay defective Return the meter for repair.
Air bubbles in the membrane. Carefully tap on the outside of the electrode’s glass

Dirty membrane. Clean the membrane and ll with fresh electrolyte.
Pressure changes. Depressurize the outlet from the ow cell.
Unstable pH value. The pH value must be stable during chlorine mea-

Incorrectly calibrated meter. Calibrate chlorine.
Poor electrolyte. Replace the electrolyte or wipe off the gold tip of

Oxides on the gold tip of the
measuring cell.

Test water ow too low. Ensure that the ow through the measuring cell is

Unstable pH value. The pH value must be stable during chlorine

Incorrectly calibrated meter. Calibrate chlorine.
Water sample contains high content of

isocyanuric acid.
Cable connection to metal cylinder loose. Fasten the cable connection.

Dosing relay defective. Return the meter for repair.

Check connection

casing or temporarily increase ow past the cell.

surement; adjust pH to 7.4

the measuring cell with a napkin.

Carefully polish with wet grinding paper.

correct.

measurement; adjust pH to 7.4

Dilute or replace the pool water with fresh water.

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Alarm codes

The following error codes can occur when the Reset button [15] is held depressed:

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FLo active ow error

Lo active low alarm

Hi active high alarm

doS incorrect dosing

PHF stopped chlorine dosing because pH value outside permitted limits

SbY standby

LoL active level switch alarm

- - - everything OK

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13. Jesco free chlorine electrode (option)

Jesco free chlorine electrode is not marketed by Pahlén AB, but connection is possible if desired.
Note that Jesco uses a separate measuring cell and the corresponding electrode/cell on the Autodos unit must then be plugged.

Maintenance

Refer to the Jesco manual regarding service and maintenance.

Calibration of free chlorine (Jesco chlorine electrode)

NOTE: In order to obtain the correct chlorine value, the measuring cell must rst have correct ow for 3 hours so that the glass

balls have time to clean the electrodes. This is vital in order to prevent a zero point error.

1. Activate calibration mode by pressing and holding the Cal. button [0] until the “Active” LED illuminates.

2. Fill the measuring cell with chlorine-free water and then wait about 10 seconds.

3. Activate zero point calibration by pressing the ↓ button under display 1. Before calibration can continue, the electrode must

be allowed to measure in the ow cell for about 2 minutes to obtain a correct value.

4. Access calibration mode Adjust by pressing and holding the Cal. button [0] until the “Adjust” LED illuminates.
The meter stores the last measured electrode signal.

5. Take a water sample and determine the correct chlorine value with DPD1.

6. Set the correct chlorine value with the ↑ and ↓ buttons under display 1.

7. Exit calibration mode Adjust by pressing and holding the Cal. button [0] until the “Adjust” LED goes out.

Flow

Flow must be large enough that the glass balls rotate so forcefully that they reach the top of the measuring cell (but not too
violently). If necessary, the copper plate can be replaced.

14. Autodos PC connection (expansion)

Simply installing an extra circuit board makes it possible to connect Autodos M to a PC.
The PC connection kit includes the following parts: Datalogger with real-time clock and communication module.
The circuit board is connected to the bottom card in Autodos M with a connector and plastic clips.
Externally, the circuit board is connected either to a communication module via a twin-cable connector or via an RJ45 connec­tor to the serial port of a PC or modem. Program version 1.0 has no support for modem connection. Such support is planned for
later versions.

Identication of a single Autodos M in the twin-cable loop is done through a unique, factory-programmed serial number for each

delivered unit.
The communication program “Autodos Monitor” is used to monitor Autodos M and modify parameters.
The program is described in a separate document.

Datalogger 32kB EEPROM

Real-time clock

24kB (3 days) with minute average values for 4 channels

8kB events (255 events); an event can be e.g. an alarm or a calibration

Communication
module

RS232 PC communication, cables included

Twin-cable connection with Autodos

With recommended cable FKAR-PG 0.5 mm2, up to 200 m and 5 units can be connected to the twin­cable loop.

External 9 VAC transformer included

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15. Autodos PLC connection (expansion)

Simply installing an extra circuit board makes it possible to connect Autodos M to a PLC.
The PLC connection kit includes the following parts: Datalogger with real-time clock and Modbus RTU.
The circuit board is connected to the bottom card in Autodos with a connector and plastic clips. Externally, the circuit board is
connected to the RS422 interface via a 5-pin screw terminal.

Datalogger 32kB EEPROM

Real-time clock

24kB (3 days) with minute average values for 4 channels

8kB events (255 events); an event can be e.g. an alarm or a calibration

Modbus RTU-interface i Autodos M3, ver. 5.3

Baudrate 9600 baud
Parity None.

Modbus RTU communication in Autodos M3. Autodos only responds via a message:

Slave address As per Autodos “common setup”
Function 03H, Read holding registers
Starting Address Hi 00H
Starting Address Lo 01H
No. of Points Hi 00H
No. of Points Lo 0BH
CRC 55H
CRC CDH

With slave address 1, the message is: 01 03 00 01 00 0B 55 CD

Autodos responds with:
Ph (16 bit, lsb = 0.01 pH)
Combined chlorine (16 bit, lsb = 0.01 mg/l)
Free chlorine (16 bit, lsb = 0.01 mg/l)
AD0 (16 bit, lsb = prog. dependent)
Redox (16 bit, lsb = 1 mV)

Temp, NTC input (16 bit, lsb = 0.1 °C)

Alarm Active (16 bit)
Alarm Reset (16 bit)
Setvalue pH (16 bit, lsb = 0.01 pH)
Setvalue Comb.chlorine (16 bit, lsb = 0.01 mg/l)
Setvalue Free chlorine (16 bit, lsb = 0.01 mg/l)

Alarm Active (16 bit)

bit 0: Standby mode
bit 1: Flow
bit 2: High alarm pH
bit 3: High alarm Combined chlorine
bit 4: High alarm Free chlorine
bit 5: Low alarm pH
bit 6: Low alarm Combined chlorine
bit 7: Low alarm Free chlorine

Alarm Reset (16 bit)

bit 0: Standby mode
bit 1: Flow
bit 2: High alarm pH
bit 3: High alarm Combined chlorine
bit 4: High alarm Free chlorine
bit 5: Low alarm pH
bit 6: Low alarm Combined chlorine
bit 7: Low alarm Free chlorine

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