Emec LDSPH PLUS Series Operating Instructions Manual

This manual contains safety information that if ignored can
endanger life or result in serious injury. They are indicated
by this icon.

Keep the instrument protected from sun and water.
Avoid water splashes.

OPERATING INSTRUCTIONS

FOR “LDSPH PLUS” INSTRUMENT SERIES

ERMES COMMUNICATION SYSTEM

www.ermes-server.com

Read Carefully !

1

ENGLISH Version

R5-03-19

NORME CE
EC RULES(STANDARD EC)
NORMAS DE LA CE

Direttiva Bassa Tensione
Low Voltage Directive
Directiva de baja tensión

Direttiva EMC Compatibilità Elettromagnetica
EMC electromagnetic compatibility directive
EMC directiva de compatibilidad electromagnética

2014/35/UE

⎬

GENERAL SAFETY GUIDELINES

2014/30/UE

⎬

Danger!

Caution!

In emergencies the instrument should be switched off immediately! Disconnect the power cable
from the power supply!

When installing always observe local regulations!

Manufacturer is not liable for any unauthorized use or misuse of this product that may cause injury,

damage to persons and / or materials.

Instrument must be accessible at all times for both operating and servicing. Access must not be
obstructed in any way!

Feeder should be interlocked with a no-flow protection device to automatically shut-off the pumps
when there is no flow!

Pumps and accessories must be serviced and repaired by qualified and authorized personnel only!

Always discharge the liquid end before servicing the instrument!

Empty and rinse the liquid end before work on a pump which has been used with hazardous or
unknown chemicals!

Always read chemical safety datasheet!

Always wear protective clothing when handling hazardous or unknown chemicals!

Instrument must be operated / serviced by trained technicians only!

All connection operations must be performed while the instrument is not connected to main
supply!

Missed activation for Min/Max alarm and Maximum Dosing Alarm may cause hazardous overdosing!

2

1. Introduction

LDSPH PLUS is a microprocessor based digital regulator for pH with temperature reading / compensation and mA
module (feed forward). On/Off, impulsive proportional, proportional PWM or fixed PWM, Water Meter and PID are
main working modes. Also available FEED FORWARD setting for mA module. Pulses per minute can be set for outputs.
Working ranges are: 0 to 14 pH. All information are provided through a large LCD display. Using a revolutionary wheel
control the instrument can be easily programmed. LDSPH is housed in a IP65 plastic box.

INPUTS:

- Stand-by

- Flow

- pH level

- pH probe

- Temperature probe

- Water Meter

LDSPH-A PLUS Version stops probe’s reading when into STANDBY mode and activates the cleaning probe procedure
(if enabled and for set time into SELF CLEAN MENU) and restore time. At the end of the STANDBY a new cleaning
cycle and restore time re-start.

OUTPUTS:

- 2 relay outputs (pH and alarm)

- 2 opto coupled pulses outputs (pH and temperature)

- 2 current outputs (pH and Temperature)

- Main alarm

2. The wheel

Located in the upper right side of LDSPH there is a wheel that must be used to control the instrument. Wheel can
be rotated in both directions to scroll over the menus and / or pressed to confirm highlighted selection / value.

NOTE: Once changes are made press “OK” to save and exit from submenu. Press “ESC” to exit without saving.

Rotate wheel to scroll through menus or options

SCROLL

Press wheel to select highlighted option

3

SELECT

3. Mainboard Connections

Unplug instrument from main power supply then perform connections by following the above picture.

DISPLATY BOARD

pH probe input

USB or GSM or ETHERNET modules

(see this manual “Appendix”)

MAIN

BOARD

30 31 32 33 34 35 36 37

L 1 2 3 4 5

22 23 24 25 26 27 28 29

A

E E E E E E

14 15 16 17 18 19 20 21

B

A: Main Fuse (6A T)
B: Instrument Fuse (3.15A T)
C - D - E : Factory reserved +5V

L(Live) - E(Earth) - N(Neutral): 85÷264VAC* or 18÷36VAC* 50/60 Hz *see instrument’s label
1(Live) - E(Earth) - N(Neutral): 85÷264VAC - 5A 50/60 Hz Relay Output “pH Relay 2”. To use with ON/OFF or PWM device
2(Live) - E(Earth) - N(Neutral): 85÷264VAC - 5A 50/60 Hz Relay Output “pH Relay”. To use with ON/OFF or PWM device
3(Live) - E(Earth) - N(Neutral): 85÷264VAC alarm output (MAX 5A)
4(Live) - E(Earth) - N(Neutral): 85÷264VAC “SELF CLEAN” output (MAX 5A)
5(Live) - E(Earth) - N(Neutral): 85÷264VAC “CIRCULATOR PUMP” output (MAX 5A)

6(Green) - 7(Brown) - 8(White) - 9(Yellow): PT100 temperature probe (remove jumper / resistor prior to install probe)

11(-) - 10(+): Standby contact
11(-) - 12(+): pH Level 1 contact
19(-) - 18(+): pH Level 2 contact

14(+ Brown) - 15(Black) - 16(- Blue) - 17(GND): Proximity sensor mod. “SEPR” (dont’ remove jumper between blocks 16 and 17)

21(GND) - 28(+RS485) - 29(-RS485): RS485

24(-) - 25(+): Opto coupled output “pH PULSE”. To use with “IS” , “MF” , “PLUS” series dosing pumps
26(-) - 27(+): Opto coupled output “pH PULSE 2”. To use with “IS” , “MF” , “PLUS” series dosing pumps

31(-) - 32(+): mA Current Output pH
34(-) - 35(+): mA Current Output Temperature
31(-) - 30(+): mA Current Output PID

36(+) ; 37(-): WM Input (max input frequency 500Hz)

N N N N N N

6 7 8 9 10 11 12 13

Max resistive load: 500 Ohm

⎬

Warning: Connections must be perfomed by qualified and trained personnel only.

mA Module

(see this manual “Water Meter”)

C D E

4

4. Main Screen

When into normal operating mode, LDSPH shows the following main screen:

GSM Signal*

UNIT (1)

LAN CONNECTION OK - ERMES CONNECTION OK

VALUES (2)

WARNING MESSAGES

OUTPUTS STATUS (3)

NOTIFICATION AREA

Main screen zones:

(1) UNIT “pH” is the measuring unit for pH probe.

According to selected probe, this field may appear different.

(2) VALUES These numbers are values read by the probes.

According to selected probe, this field may appear different.

LAN CABLE DISCONNECTED

LAN CABLE CONNECTED - ERMES NOT AVAILABLE

CONNECTED TO USB PEN-DRIVE

ERMES OK

Connection Status

(3) OUTPUTS STATUS These fields are related to current outputs status and instrument activity.

For more information rotate the wheel when into main screen. (see next page)

During critical situations a warning / alarm message may appear. To

WARNING MESSAGE
NOTIFICATION AREA

in-depth explanation completely rotate clockwise the wheel to review main

instrument parameters and current outputs status.

*sold as option

Note: the word “PUMP” as shown into this manual refers to a “dosing device” connected to the instrument!

5

5. Quick status check

From main screen completely rotate clockwise the wheel to review main instrument parameters and current outputs
status.

Local Time

Local Date

pH probe reading

Temperature probe reading

Dosing alarm condition

Probe failure status

Alarm contact status

Flow contact status

Tank Level status

Last pH calibration result

Last pH calibration date

Last Temp. calibration result

Last Temp. calibration date

Outputs Status

See mainboard (page 4) for related

connetions.

6

6. Password

To grant access into “Main Menu” press the wheel from main screen and enter the passcode.
If this is the first time here then the passcode is 0000 (factory preset). Press wheel 5 times to enter into “Main
Menu”. Otherwise press the wheel 1 time and enter the passcode. Numbers can be selected rotating the wheel.

X5

To set a new passcode choose “PARAMETERS” from “Main Menu” , move on “New Pcode”, click on wheel and
enter a four numbers code. Click on “EXIT” and choose “YES” to save request. The new passcode is now ready.

Lost passcode ?

Please dont’ forget the passcode (if changed). In the unfortunate event, please call your local distributor for unlocking procedure. There is no way for you
to recover lost passcode.

7

7. “Main Menu” list

To grant access into “Main Menu” enter the passcode (as described in previous chapter). Once into “Main Menu”
rotate the wheel to scroll through all the options available.

“Setpoint” (see page 9)

“Calibration” (see page 14)

“Parameters” (see page 16)

“Output manager” (see page 17)

“Instrument reset” (see page 18)

“Dosing alarm” (see page 19)

“International” (see page 20)

“Probe Failure” (see page 21)

“Compensation” (see page 32)

“Flow” (see page 22)

“Service” (see page 22)

“Out of Range Alarm” (see page 24)

“mA Outputs” (see page 23)

Communication (see below)

“Log Setup” (see page 38)

“Log View” (see page 38)

“Self Clean” (see page 25)

“Circulator Pump” (see page 26)

“Water Meter” (see page 29)

“Feed Forward ” (see page 30)

“RS485 Setup” (see page 36)

“SMS menu” (see page 36)

“TCP IP” (see page 37)

“GPRS” (see page 38)

“Email” (see page 38)

“Modbus” - (see page 39)

8

8.1 “Set-Point”, pH (On/Off)

“pH pulse” and “pH pulse 2” outputs can be set to operate within: On/Off, Proportional (%) or disabled (OFF) modes.
“pH relay” and “pH relay 2” outputs can be set to operate within: On/Off, Proportional PWM, Fixed PWM or
disabled (OFF) modes.

8.2 “Set-Point”, pH (on/off)

This mode is valid for all pH related outputs. On/Off mode set the instrument to operate using two set values
that enable or disable the pH pump. To use this mode move cursor on “Working Mode”. Press the wheel and
select it.

ON/OFF mode while dosing ALKALI

Set pH value at 7.00 OFF and 6.90 ON. Set Pulse Speed per minute (strokes per minute) based on dosing device
capabilities.
Instrument will leave the pH pump active until reading value will increase up to 7.00pH.
At 7.00pH the pH pump will be disabled until reading value will decrease under 6.90pH.

This mode is valid for all pH related outputs. ON/OFF mode while dosing ACID

Set pH value at 7.00 OFF and 7.10 ON. Set Pulse Speed per minute (strokes per minute) based on dosing device
capabilities.
Instrument will leave the pH pump active until reading value will decrease up to 7.00pH
At 7.00pH the pH pump will be disabled until reading value will increase up to 7.10pH.

9

8.2 “Set-Point”, pH proportional & proportional water meter (pulse)

This mode is valid for “pH pulse” and “pH pulse 2” outputs only.

Proportional mode set the instrument to operate using a calculated percentage between two set values that
enable or disable the Chlorine pump. To use this mode move cursor on “Working Mode”. Press the wheel and
select it.

PROPORTIONAL mode between 7pH(0 P/m) and 8pH (180 P/m). p/m is : pulses per minute

In this mode the pH pump will be “ON” for values greater than 8pH with maximum set pulses per minute capacity
(e.g.: 180) and it’ll be “OFF” for values lower than 7pH. For values of 7.5pH pump will be “ON” with 90 pulses
per minute capacity. The calculation is based on 180 pulses per minute setting (see page 22). To end procedure
move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES” to save or
“NO” to discard changes.

Proportional Water Meter

Proportional mode can also be set into PROP+WM mode. This option allows to regulate proportional input based on
flow detected by water meter at set percentual values.

e.g.: reading at 9 will have an output of 90 P/m (50%). Adding the proportional flow from the water meter with
parameters set between 20 % (at 0mc/h) and 100% (at 8mc/h) results will be that (as example):

At 4 mc/h will have a working period of 54 P/m (60% of 90P/m)

60% is the middle value between 20% and 100% for reading of 4mc/h

10

8.3 “PWM” proportional pH & proportional water meter (relay)

This mode is valid for “pH relay” and “pH relay 2” outputs only. Pulse-width modulation (PWM) of a signal or power
source involves the modulation of its duty cycle, to either convey information over a communications channel or
control the amount of power sent to a load.

This mode works over a settable (0 to 100 seconds) time to switch on or off selected output.
During this time if reading value will move towards a set value (on or off) the PWM will operate the output on
timered basis. Reaching the set value the PWM will permanently leave on or off the output.

Parameters to set for this mode are:

Unit Value + %: (time activity towards set value. 0% means 0 seconds. 100% means 100 seconds.)
pH range: two pH values within PWM operates.

For example: set first pH value at 8.00 = 100% and second pH value at 4.0 = 0%.
For reading values ≥ to 8.00 the output will be permanently ON.
For reading values ≤ 4.0 the output will be permanently OFF.

For reading value of 7.00 the output will be OFF for 25 seconds, ON for 75 seconds.
For reading value of 6.00 the output will be OFF for 50 seconds, ON for 50 seconds.

Proportional Water Meter

11

Proportional mode can also be set into PROP+WM mode.
This option allows to regulate proportional input based on
flow detected by water meter at set percentual values.

e.g.: reading at 9 will have an output of 50 seconds on and
50 seconds Off (50% on 100 seconds base). Adding the
proportional flow from the water meter with parameters
set between 20 % (at 0mc/h) and 100% (at 8mc/h) results
will be that (as example):

At 4 mc/h will have a working period of 30 seconds ON
and 70 seconds OFF (60% of 90P/m)

60% is the middle value between 20% and 100% for
reading of 4mc/h

8.5 “PWM” (fixed), pH

This mode is valid for “pH relay” and “pH relay 2” outputs only. Pulse-width modulation (PWM) of a signal or power
source involves the modulation of its duty cycle, to either convey information over a communications channel or
control the amount of power sent to a load. Using fixed mode is possible to set operating time to switch on or off
selected output.

During this time if reading value will move towards a set value (on or off) the PWM will operate the output on
timered basis. Reaching the set value the PWM will permanently leave on (for selected amount of time) or off the
output.

Parameters to set for this mode are:

pH range: two pH values within PWM operates.
Ton: ON period, during output activity.
Toff: OFF period, during output activity.

For example: set first pH value (OFF) at 7.20.. Set second pH value (ON) at 8.00.
Set “working-pause” output activity with Toff 0 seconds and Ton 40 seconds.

For reading values ≥ to 8.00 the output will be ON with activity based on Ton and Toff.
For reading values ≤ 7.20 the output will be permanently OFF.

For reading values within working range operating mode is on HYSTERESIS base. Once reading value is 7.20 pH will be permanently off until it will

reaches 8.00 pH.

Ton: 40 seconds WORK

ON

Toff: 10 seconds PAUSE

OFF

7.20 8.00

12

8.5 “PID”, pH

A proportional-integral-derivative controller (PID controller) is a control loop feedback mechanism (controller) widely
used in industrial control systems. A PID controller calculates an error value as the difference between a measured
process variable and a desired setpoint. The controller attempts to minimize the error by adjusting the process
through use of a manipulated variable. The PID controller algorithm involves three separate constant parameters,
and is accordingly sometimes called three-term control: the proportional, the integral and derivative values, denoted
P, I, and D. Simply put, these values can be interpreted in terms of time: P depends on the present error, I on the
accumulation of past errors, and D is a prediction of future errors, based on current rate of change.[1] The weighted
sum of these three actions is used to adjust the process via a control element such as the position of a control valve,
a damper, or the power supplied to a heating element.

To correctly setup PID as working mode configure the following parameters within two menus “SETPOINT MODE
PID” and “PID PARAMETERS”

1) Choose related output to work into PID mode using Setpoint menu

2) Enter RANGE value. Range is the maximum PID value over or under which (depending on pH+ or pH-) the
instrument will automatically switch into proportional mode

3) Enter SETPOINT which is the optimal value to achieve. Move the cursor to OK and save the data.

4) Select “PID PARAMETERS” within SETPOINT submenu

- Choose working mode (+ or -) baed on how setpoint must be reached: starting from lower or higher values.

- Enter INTEGRATIVE value (time needed to the instrument to activate a procedure as answer to a plant’s change. E.G.: time
needed for pump activation when reached a set value. ) Default value: 60 seconds.

- Enter DERIVATIVE value ( time needed to the instrument to react to a plant’s status change. E.G.: if pH value in water
increase, the time integrative is the time needed to notify the change.) Default value: 3 seconds.

- Move curson on OK then click to save settings.

13

9. “Probe Calibration”, pH

Full pH calibration procedure involves two calibration points and it requires two buffer solutions. Default buffer
solutions are pH 4.00 and pH 7.00. pH reading value can be also compensated from “pH compensation” menu.
From “Menu Calibration” choose “pH probe”. Fast Calibration procedure involves one point calibration (choose
value closest to real field application).

In the following example instrument will calibrate pH using default buffer solutions values. Note: this procedure

assumes that instrument is correctly congured and a working pH probe connected. Otherwise unattended

results may occurr. When changing pH compensation option, calibration must be repeated.

pH7

Calib 1st Point.

Once into “pH Calibration” menu move wheel on “P1” then press wheel to enter into first point calibration
submenu. Prepare 7.00pH buffer solution and dip probe’s sensor on it. Wait until reading value is stable and accor­ding to buffer solution value move wheel until it is the same on display (“Cal. at” field). Default value is 7.00pH.
To end procedure move cursor on “OK” and press wheel to proceed to next step. Note: buffer solution value may

change if environment temperature it’s different than 20°C. Read solution’s label for more information. Accor­ding to this occurrence “pH Default” must be changed.

pH4

Calib 2nd Point.

Move wheel on “P2” then press wheel to enter into second point calibration submenu. Prepare 4.00pH buffer so­lution and dip probe’s sensor on it. Wait until reading value is stable and according to buffer solution value move
wheel until it is the same on display (“Cal. at” field). Default value is 4.00pH.

To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on
“YES” to save or “NO” to discard changes. Note: buffer solution value may change if environment temperature

it’s different than 20°C. Read solution’s label for more information. According to this occurrence “pH Default”
must be changed.

14

9.1 “Probe Calibration”, °C - Temperature

A professioanl thermometer is required to obtain a reliable calibration. From “Menu Calibration” choose “Temp probe”.

Note: This procedure assumes that instrument is correctly installed and congured, connected to a working

PT100.. Calibrate using plant’s temperature otherwise unattended results may occur.

Using an external thermometer read actual temperature and edit related eld “Cal. at”. Conrm by pressing wheel.

To end procedure move cursor on “OK” and press whe­el to proceed to “Save” request screen. Move wheel on

“YES” to save or “NO” to discard changes. If an error oc­curred during calibration procedure then the instrument

will show an error message and will ask to proceed to a
new calibration, cancel current operation or restore de-

fault settings.

15

10. “Parameters”

From “Menu Calibration” choose “Parameters”. This menu allows to set a delay (max 60 minutes) before pumps begin
to feed. Furthermore use this menu to set pH pump startup priority and to change default passcode.

Feeding Delay.

Move on “Feeding Delay” then press wheel. Choose a value between 0 (disabled) and 60 minutes (maximum delay
time). This feature can be used to accord a startup delay for the pumps. Delay occurs when instrument is powered.

Mode.

Move on “Mode” then press wheel. If both pumps need to operate, a startup priority can be set to allow the pH pump to
begin to feed prior to Cl pump. Choose “pH priority” to enable this function. Cl pump will begin to dose when pH pump

has stopped.

Tau.

If probes reading values are changing too fast increase TAU value to stabilize them. Default value is 05. Maximum
value is 30.

New Pcode.

See page 10.

To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES” to

save or “NO” to discard changes.

16

11. “Output Manager”

From “Menu Calibration” choose “Output Manager”. This menu allows to manually operate all outputs for a
settable time. Set to “AUTO” for normal operating mode. Set to “OFF” to permanently disable outputs.

Press wheel to move cursor on “TIME” field. Once here, choose a working time between 0 (disabled) or 199
minutes. Move on “EXIT”, then press wheel.

Choose “YES” to save changes. Exit from main menu. Main display will show a countdown for selected output.
To stop this countdown go back to “Output Manager” menu and choose “AUTO” as working mode or wait until
countdown ends. This function can be used for priming purposes.

17

12. “Instrument Reset”

“Instrument Reset” menu allows user to reset several parameters (channel, temperature, instrument and setpoint)
Press wheel then change value to restore (multiple choises are allowed) to “ON”, press wheel again, move on “OK”
then finally press wheel. The instrument will go back to main menu and values will be restored.

18

13. “Dosing Alarm”

Use this menu to assign a maximum time to the pumps for reaching the setpoint. If set time ends and the pumps
are still dosing, within this menu is possible to STOP them or just to show an alarm message. Function can be
disabled selecting “OFF” instead of a number (minutes). Dosing alarm can be set for both or just one pump.

E.g. To set Cl pump to stop after time ends and setpoint isn’t still reached press wheel, choose maximum time,
press wheel move on next field and choose “STOP”. Time can be set between 0 and 100 minutes. When satisfied
with settings move on exit and press wheel.

To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES”
to save or “NO” to discard changes.

19

14. “International”

Use this menu to set international parameters as UNIT FORMAT (Europe IS or USA), Local Time and Date.

Format.

Use this option to use European or USA units format. See table for differencies.

EUROPE IS (Internationl Standard) USA

Date (DD/MMM/YY) Date (MMM/DD/YY)

Time 24h Time AM / PM

°C °F

Time.

Use this option to set local time.

Date.

Use this option to set date.

Move on exit to end changes.

To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on
“YES” to save or “NO” to discard changes.

20

15. “Probe Failure”

Use this menu to assign a maximum time for connected probes to stay in “stuck” condition. A stuck probe (it
remains on same reading value for some time) means that probably probe itself is damaged. Within this menu is
possible to STOP pumps or just to show an alarm message (DOSE, probe failure) . Function can be disabled selec­ting “OFF” instead of a number (minutes). This function can be set for both or just one probe.

E.g. To set pH pump to stop after time ends and probe doesn’t change reading values press wheel, choose maxi­mum time, press wheel move on next field and choose “STOP”. Time can be set between 100 and 254 minutes.
When satisfied with settings move on exit and press wheel.

To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES”
to save or “NO” to discard changes.

21

16. “Flow Contact”

Flow contact (see “SEPR” blocks on page 4) can be enabled to stop a dosing procedure using a N.O. contact mode
(normally open) or N.C. contact mode (normally closed) when status on blocks changes. Rotate wheel to choose
between: “DISABLE”, “REVERSE” (N.O. contact) or “DIRECT” (N.C. contact).

Furthermore “Flow contact” can starts after a specified time when contact status changes. To set it move wheel on
“Time:00 min”, click it and rotate to choose time (from 0 to 99 minutes). Confirm selection by clicking wheel.

To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on
“YES” to save or “NO” to discard changes.

17. “Service”

This “view only” menu shows probes reading live and instrument ID for USB LOG connection (if device’s con­nected). Press “ESC” to exit.

Connection Code for ERMES (through USB cable)

Connection Code for ERMES (through LAN cable)

22

18. “mA Outputs”

This menu allows to configure mA current otputs for pH, Temperature channels and PID mA mode. Options to set are:

MODE (selectable between 0-20 or 4-20 mA current output)
Max mA: maximum probe’s reading value at 20 mA current
Min mA: minimum probe’s reading value at 0 or 4 mA current

Disable / Enable on alarm: enable or disable output on alarm condition (flow, level, probe failure, dosage, out of range)

Note: The outputs available for the PID mA are those set in the menu SETPOINT.

PID outputs will be always disbled during an alarm condition

Rotate wheel to move within all 3 channels. Click wheel to selecte parameter and rotate wheel to change it. Click
wheel again and rotate wheel to move cursor on next parameter.To end procedure move cursor on “EXIT” and press
wheel to proceed to “Save” request screen. Move wheel on “YES” to save or “NO” to discard changes.

23

19. “Out of range alarm”

“Out of range alarm” menu defines the minimum and maximum pH and pH probe read value before to stop dosing
activity and to show an alarm message.

Move wheel on “Min/Max pH Range” to
set “out of range” condition for pH probe
then click on wheel to enter into “Min/Max
Range menu”.

Move wheel on “pH Hi: Dis.” and change
status from “Dis.” (option disabled) to “En.”
(option enabled) by clicking on wheel and
rotating it. Press wheel again and move on
next field. Press wheel and enter a value for
HIGH alarm.

Repeat procedure for “pH Lo: Dis.” and
enter a value for LOW alarm.

As last option enter “Time” (max 99
minutes) after which if lower or higher read
value condition stays then the alarm occurs
(to set into mode field).

To change alarm mode move wheel on
“Mode”, press it and choose between
“DOSE” (connected pumps will not stop
dosing activity when read value is out
of range) or “STOP” (connected pumps
will stop dosing activity when read value
is out of range and an alarm message is
displayed).

24

20. “Self Clean”

To obtain reliable results, the instrument can be connected to a cleaning apparatus (eg .: Probe Cleaning). This menu
enables the functionality to blocks 4-E-N (see page 8).

Options are:

Cycle Time: time between cleaning procedure and next
procedure (adjustable from 6 hours to 10 days)

Clean Time: time required to complete probe cleaning
procedure (adjustable from 0 to 999 seconds)

Restore Time: time to wait after cleaning to restore probe
reading functionalities (adjustable from 0 to 999 minutes)

Clean on Alarm: Threshold alarm before to start procedure
(out of range alarm)

To find optimal values refers to probe manufacturer.

25

21. “Circulator Pump”

This feature allows you to power a pump for water circulation inside the intake pipeline, increasing the pressure.

To activate the circulation pump connected to terminals 5-E-N (see terminal) set option to “ENABLED” To disable set
the tool to “DISABLED”.

26

22. Technical information.

Packaging and Transporting Temperature: -10 ÷ 50°C (14 ÷ 122°F)

Power supply: 85÷264 VAC

pH range: 0 ÷14

Environment Temperature: -10 ÷ 45°C (14 ÷ 113°F)

Chemical Temperature: 0 ÷ 50°C (32 ÷ 122°F)

Installation Class: II

Pollution Level: 2

Protection degree: IP 65

27

23. SEPR configuration

SEPR “Flow Sensor” configuration for two instruments

14 15 16 17

black

brown

blue

14 15 16 17

SEPR

Configuration of a Flow Switch with a voltage free contact and two instruments

14 15 16 17

14 15 16 17

black

brown

N.C. contact (OK)
N.O. contact (Alarm)

NPED4

28

blue

24. “Water Meter”

Enter into “Water Meter” menu to setup Flow Meter configuration type, see total amount of liters passed through
water meter, reset totalizer and setup a timeout alarm for no water flow. The alarm will be notified into main screen
and water meter status (see page 6).

Tot WMI: water passed through water meter

FM Input: Water Meter Working Mode

RST TOT: reset totalizer

Timeout: countdown to “no water flow alarm”

FM Input can be set to operate Water Meter as 0-20mA or 4-20mA input, P/L (pulses per liter) or L/P (liters per pulse).

Connect as follows if mA working mode is enabled:

Block 1 : red wire (+)
Block 2 : black wire (-)

1 2

29

25 “Feed Forward”, PID loop

The PID controller algorithm involves three separate constant parameters, and is accordingly sometimes called three­term control: the proportional, the integral and derivative values, denoted P, I, and D. Simply put, these values can be
interpreted in terms of time: P depends on the present error, I on the accumulation of past errors, and D is a prediction
of future errors, based on current rate of change. The weighted sum of these three actions is used to adjust the process
via a control element such as the position of a control valve, a damper, or the power supplied to a heating element.

This function manages all instrument outputs based on changes read by mA input and multiply value referring to % and
mc/h read by the module.

30

26. NOTES

intentionally left blank page

31

Appendix “Temp. Compensation” - Temperature compensation

pH measurements are temperature dependent. The degree to which temperature affects mV readings varies from solution
to solution and can be calculated using the following graphic.

Instrument has either fixed or adjustable automatic temperature compensation referenced to a standard temperature of
25°C.

To end procedure move cursor on “OK” and press wheel to proceed to “Save” request screen. Move wheel on “YES” to
save or “NO” to discard changes.

32

Appendix - Dimensions

2

0

0

,

0

0

136,00

mm

2

3

0

,

0

0

213,00

124,00

2

6

4

,

0

0

97,00

33

Appendix Communication HARDWARE - “SMS/GSM” Module

Located under mainboard cover there is a four pins connector that can be used to install USB, ETHERNET or MODEM
modules. Modules come pre-installed upon request and may appear different as shown (different configurations).

“SMS/GMS module” can be congured to send SMS messages containing critical instrument information.

Insert here standard
SIM

Unplug instrument
from main supply
before to open it.

GSM modem antenna connector

To obtain reliable results with this feature please check the following list:

- Make certain the antenna location is not shielded by metal objects or near sources of electrical ‘noise’.

- Do not route the cable where it could be pinched in doors, windows etc.

- Secure the antenna cable

- Ensure that SIM into “SMS/GSM modeule” is properly inserted, activated and within operator range.

- Set instrument ID / NAME from “RS485 Setup” menu and configure “Out of Range Alarm” menu.

Within “Main menu” select “SMS MENU” to enable SMS service and enter SMS receiver phone numbers.

Up to three numbers for sending SMS can be stored
into LDSPH memory. SMS recipient will receive an SMS
containing instrument ID, NAME and status. Number
formats can be stored using international prefix “+”,
international prefix “00” or local.

WARNING: THIS FUNCTION COULD NOT BE

FREE OF CHARGE. DEPENDING ON YOUR OPERATOR CONTRACT IT

COULD GENERATE PAYING SMS TRAFFIC !

34

To enable warning message for related alarm
condition choose “YES”, to disable choose “NO”.
Then move wheel on Exit and SAVE configuration.

SMS will be sent when one or more (“YES”) elds

will change.

I.E.:
LPH1 or 2 : level alarm for PH1 or PH2 levels
LPH: level alarm for pH
FLOW: flow alarm
ALPH: out of reading range for pH probe

WARNING: TO AVOID UNDESIRED MESSAGES USE CAREFULLY THIS

SETUP!

Appendix Communication HARDWARE - “LOG USB” Module

Located under mainboard cover there is a four pins connector that can be used to install “USB data log module”
or “SMS module”. Modules come pre-installed upon request and may appear different as shown (different
configurations).

“USB data log module” records instrument activities. These information can be permanently stored into a standard
USB pendrive. Pendrive can be connected to a PC using “ERMES” web www.ermes-server.com to review and print
instrument’s activities. To obtain reliable results with this feature please set instrument ID and NAME from

“RS485 Setup” menu and activate log recording from “LOG SETUP” menu.

Activity LED

Power LED

Standard USB pendrive

(not included)

Insert USB pendrive here

(right side of instrument)

After usage put back USB cap

HOW TO RECORD INSTRUMENT’S ACTIVITIES INTO USB PENDRIVE ?

Insert USB pendrive into USB connector (located on the right side of instrument). Instrument will save data log on
USB pendrive. After succeded in saving data it will ask if delete instrument’s log or not (anyway USB pendrive will
not be formatted). Move wheel on “YES” to delete log info from instrument and return to main screen or “NO”
to leave log info on instrument and return to main screen. Wait about 30 seconds to safety remove the USB

pendrive.

HOW TO REVIEW INSTRUMENT’S ACTIVITIES RECORDED INTO USB PENDRIVE ?

It’s necessary to connect to web “ERMES” www.ermes-server.com to review USB pendrive info on a PC.

35

Appendix Communication - Software

“RS485” menu.

Prior to install the instrument into an RS485 local system a unique ID NUMBER (from 1 to 30) and ID NAME (station
name) must be set. Rotate wheel and edit elds. If ID number has already assigned an error message will follow after ID
Check (move cursor on CHECK and press wheel). In this event try using another number.

Choose

Edit

“SMS” menu.

Instrument may remotely send SMS alarm messages using its own modem (sold as option). It can be congured as
follows:

SMS1 / SMS2 /SMS3.

Using the wheel enter a mobile phone that will receive alert SMS messages if something wrong occurrs. SMS number
must be set using local number format. For example : 3391349134 will send an SMS message to mobile phone.
Log level (and SMS frequency alert) may be set using options in “ACTIVE MSG” within “GSM menu”.

Choose

Edit

- TO AVOID UNDESIRED MESSAGES USE CAREFULLY LOG SETUP -

- WARNING: THIS FUNCTION COULD NOT BE FREE OF CHARGE. DEPENDING ON YOUR OPERATOR CONTRACT IT

COULD GENERATE PAYING SMS TRAFFIC !

36

Appendix Communication - Software

“TCP/IP” menu.

The instrument may be remotely operated using a standard ethernet connection (sold as option). A static or dynamic IP
address and a CAT5 ethernet cable is required. According to your network capacity connection speed is 10/100Mbps.
To obtain a valid IP address and subnet mask contact your net administrator. Enter parameters and move cursor on
“SAVE” to store parameters then move on “OK” and press wheel to save and activate conguration.

Based on your network conguration choose to obtain network parameters automatically (DYNAMIC) or manually
(STATIC).

See “ERMES Communication Software” manual for proper PC software conguration.

What is a static IP address/dynamic IP address?

A static IP address is a number (in the form of a dotted quad) that is assigned to a computer by an Internet service provider (ISP)
to be its permanent address on the Internet. Computers use IP addresses to locate and talk to each other on the Internet, much the
same way people use phone numbers to locate and talk to one another on the telephone. When you want to visit whatis.com, your
computer asks a domain name system (DNS) server (think telephone information operator) for the correct dotted quad number
(think phone number) for whatis.com and your computer uses the answer it receives to connect to the whatis.com server.
It would be simple if every computer that connects to the Internet could have its own static IP number, but when the Internet was

rst conceived, the architects didn’t foresee the need for an unlimited number of IP addresses. Consequently, there are not enough

IP numbers to go around. To get around that problem, many Internet service providers limit the number of static IP addresses
they allocate, and economize on the remaining number of IP addresses they possess by temporarily assigning an IP address to

a requesting Dynamic Host Conguration Protocol (DHCP) computer from a pool of IP addresses. The temporary IP address is

called a dynamic IP address.

Requesting DHCP computers receive a dynamic IP address (think temporary phone number) for the duration of that Internet ses-

sion or for some other specied amount of time. Once the user disconnects from the Internet, their dynamic IP address goes back

into the IP address pool so it can be assigned to another user. Even if the user reconnects immediately, odds are they will not be
assigned the same IP address from the pool. To keep our telephone telephone analogy going, using a dynamic IP address is simi­lar to using a pay phone. Unless there is a reason to receive a call, the user does not care what number he or she is calling from.

There are times, however, when users who connect to the Internet using dynamic IP wish to allow other computers to locate them.
Perhaps they want to use CU-SeeMe or use a VoIP application to make long distance phone calls using their IP connection. In that
case, they would need a static IP address. The user has two choices; they can contact their ISP and request a static IP address, or
they can use a dynamic DNS service. Either choice will probably involve an additional monthly fee.

Using a dynamic DNS service works as if there was an old-fashioned telephone message service at your computer’s disposal.
When a user registers with a DNS service and connects to the Internet with a dynamic IP address, the user’s computer contacts

the DNS service and lets them know what IP address it has been assigned from the pool; the service works with the DNS server
to forward the correct address to the requesting DHCP computer. (Think of calling the message service and saying “Hi. I can be
reached at 435.44.32.111 right now. Please tell anyone who tries to reach me to call that number.) Using a dynamic DNS service to

arrange for computers to nd you even though you are using a dynamic IP address is the next-best thing to having a static IP.

37

Appendix Communication - Software

“GPRS” menu.

Instrument may be remotely operated using an embedded standard GPRS modem (sold as option). In order to activate
this service please ensure that the following steps are correctly completed:

- Make certain the antenna location is not shielded by metal objects or near sources of electrical ‘noise’.

- Make certain the distance from the antenna to the “Instrument” unit is within cable length.

- Do not route the cable where it could be pinched in doors, windows etc.

- Ensure that SIM into “Instrument” modem is correctly inserted, activated and within operator range.

Instrument can be set for ERMES services enabled (Conguration option set to “ERMES YES”) or messages only
(Conguration option set to “ERMES NO”) based on your SIM data access parameters. For manual conguration option
enter APN (access point name) and SIM phone number. Move wheel on “OK” to save and move on “ESC” to go back to

main menu.

WARNING: THIS FUNCTION COULD NOT BE FREE OF CHARGE. DEPENDING ON YOUR OPERATOR CONTRACT IT

Don’t forget to enter SIM CODE into PIN NUMBER menu to unlock SIM.

COULD GENERATE PAYING DATA TRAFFIC !

“Email” menu.

If Ethernet module or GPRS module is installed (sold as option) the instrument can be congured to send email alarm
messages up to two recipients. Click on “Email 1” or “Email 2” and enter email address.

Access point name (APN) identies an IP packet data network (PDN), that a mobile data user wants to communicate with. In addition to identifying a PDN, an
APN may also be used to dene the type of service, (eg connection to wireless application protocol (WAP) server, multimedia messaging service (MMS)), that
is provided by the PDN. APN is used in 3GPP data access networks, eg general packet radio service (GPRS), evolved packet core (EPC).

38

Appendix Communication - Software

“LOG” menu.

This function records instrument acitvity (date, hour, temperature, uS, totalizer I/O, alarms, outputs). It starts for
selected frequency period (every) at requested time (time). SET DATE & TIME BEFORE TO ENABLE LOG. IF NOT
POWERED FOR ABOUT 30 DAYS THE INSTRUMENT WILL LOOSE DATE/TIME

Set ACTIVE to “enabled” to activate log recording.

TIME: recording start time (time format 23h e 59min)

EVERY: recording frequency (time format 23h e 59min)

Note: advanced log control (graph, printing, comparison tables, event ltering, etc) is available through “ERMES
Communication Software” for PC.

See “ERMES Communication Software” manual for proper PC software conguration.

“LOG VIEW” menu.

To see alarrm log entries as set on log menu choose “log view” on main menu.

39

Appendix - MODBUS



Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for
use with its programmable logic controllers (PLCs). Simple and robust, it has since become a de facto standard
communication protocol, and it is now a commonly available means of connecting industrial electronic devices.

From main menu select COMMUNICATION then MODBUS to access the options. Set the communication speed
according to the PLC system available. Set the ID assigning an UNIQUE address to avoid conflicts.

To access the module MODBUS open the in­strument only after power is switched off!

Never make connections with the instru­ment powered!

WARNING

1 2 3

1: GND
2: A-RS485 (+)
3: B-RS485 (-)

40

Appendix - WIFI Connection

Within Communication Menu choose “WIFI” to bring wireless sub-menu. Wait until desired wireless network appears,
move wheel on it then click. Otherwise click on “SCAN” to restart the search. Enter WEP / WPA / WPA2 password
(if required) and wait until connection has been estabilished and WiFi signal strength appears. To obtain a reliable
connection be sure to install the controller within WiFi range. See your router features and installation procedure
for best results.

WiFi signal strength

41

42

Index

1. Introduction ........................................................................................3

2. The wheel ............................................................................................ 3

3. Board connectiones .............................................................................4

4. Main view ...........................................................................................5

5. Status check ........................................................................................6

6. Password ............................................................................................. 7

7. “Main Menu” .....................................................................................8

8 “Set-Point”, Cl (On/Off)........................................................................9

8.1 “Set-Point”, Cl (on/off) ......................................................................9

8.2 “Set-Point”, Cl (proportional) ...........................................................10

8.3 “PWM” Proportional, Cl ....................................................................11

8.4 “PWM” (fixed), Cl ............................................................................. 12

8.5 “PID”, Cl ........................................................................................... 13

9 “Probe Calibration”, C .........................................................................14

10. “Parameters” .................................................................................... 16

11. “Output Manager” ............................................................................ 17

12. “Instrument Reset” ........................................................................... 18

13. “Dosing Alarm” .................................................................................19

14. “International”..................................................................................20

15. “Probe Failure” .................................................................................21

16. “Flow Contact” ................................................................................. 22

17. “Service” ..........................................................................................22

18. “mA Outputs” ................................................................................... 23

19. “Out of range alarm” ........................................................................ 24

20. “Self Clean” ......................................................................................25

21. “Circulator pump” ...........................................................................26

22. Technical Information ........................................................................ 27

23. SEPR configuration ............................................................................28

24. “Water Meter” ..................................................................................29

25. “Feed Forward” and mA module ....................................................... 30

Appendice - Compensation ..................................................................... 32

Appendice - MDCL6 module ................................................................... 32

Appendice - Dimensioni .......................................................................... 33

Appendice - “Module SMS/GSM” ..........................................................34

Appendice - “Module USB for data log” ................................................35

Appendice - “Communication” ..............................................................36

Appendice - MODBUS ............................................................................. 40

Appendice - WiFi ..................................................................................... 41

Information on this manual may contain technical inaccuracies or typographical errors.

The information contained may be changed at any time without prior notication or obligation.

43

When dismantling this instrum ent please separate material types and send them according to local recycling disposal requirements.

We appreciate your efforts in supporting your local Recycle Environmental Program.

Working together we’ll form an active union to assure the world’s invaluable resources are conserved.

44