Knick Protos II 4400 User manual

The Art of Measuring.
Aktuelle Produktinformation: www.knick.de
Analysenmesssystem
Protos 3400(X)
Betriebsanleitung Messmodul Protos CONDI 3400 (X)-051
zur Leitfähigkeitsmessung mit induktiven Sensoren
Deutsch
Protos PH 3400(X)-033 Measuring Module
For Simultaneous Measurement of pH Value and
Temperature with Pfauder Differential Probes
User Manual
Protos II 4400(X) / Protos 3400(X)
Process Analysis System
Latest Product Information: www.knick.de

Trademarks
The following trademarks are used in this document without further marking:
Calimatic®, Protos®, Sensocheck®, Sensoface®, Unical®, VariPower®, Ceramat®, SensoGate®
are registered trademarks of Knick Elektronische Messgeräte GmbH & Co. KG, Germany
Memosens®
is a registered trademark of
Endress+Hauser Conducta GmbH & Co. KG, Germany
Knick Elektronische Messgeräte GmbH & Co. KG, Germany
Returns
Please contact our Service Team before returning a defective device. Ship the cleaned device to the
address you have been given.
If the device has been in contact with process medium, it must be decontaminated/disinfected before
shipment. In this case, place a Declaration of Contamination in the consignment to prevent any risk to the
health and safety of our service personnel. The declaration is available at:
https://www.knick-international.com/en/service/repairs/
Disposal
Please observe the applicable local or national regulations concerning the disposal of “waste electrical and
electronic equipment”.

3
Table of Contents
Protos PH 3400(X)-033 Module
Returns........................................................................................................................................... 2
Disposal ......................................................................................................................................... 2
Trademarks ................................................................................................................................... 2
Intended Use.................................................................................................... 6
Safety Instructions .......................................................................................... 7
Operation in Explosive Atmospheres: PH 3400X-033 Module.................................. 7
Firmware Version ............................................................................................ 8
Terminal Plate PH 3400-033 Module ............................................................. 9
Installing the Module.................................................................................... 11
Wiring Examples............................................................................................ 12
Calibration / Adjustment .............................................................................. 14
Calibration methods ...............................................................................................................16
Temperature compensation.................................................................................................17
HOLD Function During Calibration ...................................................................................18
Automatic Buffer Recognition (Calimatic) ......................................................................20
Calibration with Manual Entry of Buffer Values ...........................................................22
Product Calibration (Calibration with Sampling) ........................................................24
Data Entry of Premeasured Electrodes ............................................................................26
Determination of Nominal Zero .........................................................................................28
Temp Probe Adjustment........................................................................................................30
Parameter Setting ......................................................................................... 31
Parameter Setting: Operating Levels ................................................................................32
Parameter Setting: Locking a Function ...........................................................................33
Activating Parameter Setting ..............................................................................................34
Settings of Sensor Data..........................................................................................................35
Sensoface ....................................................................................................................................37
Sensocheck.................................................................................................................................37
Sensoface criteria.....................................................................................................................38
Cal preset values.......................................................................................................................39
Tolerance adjustment.............................................................................................................39
Calimatic buffer.........................................................................................................................42
Calibration timer.......................................................................................................................42

4
Table of Contents
Protos PH 3400(X)-033 Module
Cal tolerance band...................................................................................................................42
TC process medium.................................................................................................................44
Temperature Compensation of Process Medium.........................................................45
ORP/rH value..............................................................................................................................46
Delta function............................................................................................................................46
Calculation Blocks....................................................................................................................47
Logbook.......................................................................................................................................50
Restore Factory Settings........................................................................................................50
Messages: Default settings and selection range..........................................................51
Configuring a Current Output.............................................................................................53
Current Outputs: Characteristics ........................................................................................54
Current Outputs: Output Filter............................................................................................56
Maintenance .................................................................................................. 57
Sensor monitor .........................................................................................................................57
Temp probe adjustment........................................................................................................57
Diagnostic Functions .................................................................................... 58
Message list................................................................................................................................58
Logbook.......................................................................................................................................58
Device description...................................................................................................................59
FRONT module..........................................................................................................................59
BASE module .............................................................................................................................59
Module diagnostics.................................................................................................................60
Sensor monitor .........................................................................................................................60
Calibration timer.......................................................................................................................61
Adaptive calibration timer....................................................................................................61
Tolerance adjustment.............................................................................................................61
Cal record ....................................................................................................................................62
Sensor diagram.........................................................................................................................62
Statistics.......................................................................................................................................62
Messages.....................................................................................................................................67

5
Specifications................................................................................................. 73
Appendix:....................................................................................................... 77
Minimum spans for current outputs.................................................................................77
Buffer table "Mettler-Toledo" ...............................................................................................78
Buffer table "Knick CaliMat"..................................................................................................79
Buffer table "DIN 19267"........................................................................................................80
Buffer table "NIST standard" (DIN 19266: 2000-01) .....................................................81
Buffer table "Techn. buffers to NIST".................................................................................82
Buffer table "Hamilton"..........................................................................................................83
Buffer table "Kraft" ...................................................................................................................84
Buffer table "Hamilton A" ......................................................................................................85
Buffer table "Hamilton B" ......................................................................................................86
Buffer table "HACH".................................................................................................................87
Buffer table "Ciba"....................................................................................................................88
Buffer table "Reagecon".........................................................................................................89
Specifiable Buffer Sets..................................................................................................................91
Overview ........................................................................................................ 92
Overview of Parameter Setting...........................................................................................92
Index .............................................................................................................. 96
Table of Contents
Protos PH 3400(X)-033 Module

6
Intended Use
The module is used for simultaneous pH and temperature measurement with
Pfaudler differential probes.
The PH 3400X-033 module is intended for operation in locations subject to
explosion hazards which require equipment of Group II, device category 2(1),
gas/dust.

7
Operation in Explosive Atmospheres: PH 3400X-033 Module
The module is approved for operation in explosive atmospheres.
When installing the product in a hazardous location, observe the information in
the supplements to the certificates and, if applicable, the relevant control draw-
ings.
Observe all applicable local and national codes and standards for the instal-
lation of electrical equipment in explosive atmospheres. For orientation,
please refer to IEC 60079-14, EU directives 2014/34/EU and 1999/92/EC (ATEX),
NFPA70 (NEC), ANSI/ISA-RP12.06.01.
WARNING! Possible impairment of explosion protection.
• Modules which have already been used shall be subjected to a professional
routine test before they may be operated in another type of protection.
• Prior to commissioning, the operating company must verify the intrinsic
safety in accordance with the installation regulations of IEC60079-14 for
the complete interconnection of all equipment involved, including the
connecting cables.
• The interconnection of Ex and non-Ex modules (mixed assembly) is not
permitted.
• In hazardous locations the device shall only be cleaned with a damp cloth to
prevent electrostatic charging.
Maintenance
The Protos modules cannot be repaired by the user. For inquiries regarding
module repair, please contact Knick Elektronische Messgeräte GmbH & Co. KG
at www.knick.de.
Safety Instructions

8
Firmware Version
Menu Display Device description
Device hardware and firmware
version
Provides information on all modules
installed: Module type and function,
serial number, hardware and firmware
version, and device options.
Select the different modules (FRONT,
BASE, slots 1 - 3) using the arrow keys.
Device description
Return
22.7 °C
7.00 pH
Operating panel Protos
Module FRONT 3400-011
Hardware: 1.1, Software: A.2
Serial number: 08150815
BASE
Module FRONT
Options
Device description
Return
22.7 °C
7.00 pH
Input for pH, ORP and °C
Module PH 3400-033
Hardware: 1, Software: 2.0
Serial number: 471101147
BASE
Module FRONT
Options
Query module software
Module PH 3400-033,
hardware and firmware version,
serial number –
here installed in slot3.
Note: The display may vary depending on the device version.
Module compatibility PH 3400-033 PH 3400X-033
Protos 3400 from FRONT firmware version 4.0 x
Protos 3400X from FRONT firmware version 4.0 x
Protos II 4400 from FRONT firmware version 1.0.0 x
Protos II 4400X from FRONT firmware version 1.0.0 x
PH 3400(X)-033 module firmware: Firmware version 2.x
Query Current Device Firmware/Module Firmware
When the device is in measuring mode:
Press menu key, open Diagnostics menu: Device Description

9
Terminal Plate PH 3400-033 Module
Attaching the terminal plates
The terminal plates of the lower modules can
be sticked to the inner side of the door.
This facilitates maintenance and service.

10

11
Installing the Module
CAUTION! Electrostatic discharge (ESD).
The modules' signal inputs are sensitive to electrostatic discharge.
Take measures to protect against ESD before inserting the module and wiring
the inputs.
Note: Strip the insulation from the wires using a suitable tool to prevent dam-
age.
1) Switch off the power supply to the device.
2) Open the device (loosen the 4 screws on the front).
3) Plug the module into the slot (D-SUB connector),
see figure.
4) Tighten the module's fastening screws.
5) Open the ESD shield (covering terminals 2 and 8).
6) Connect the sensor and separate temperature probe if necessary, see
"Wiring Examples".
Note: To avoid interferences, the cable shielding must be completely
covered by the ESD shield.
7) Fit the ESD shield back into place (covering terminals 2 and 8).
8) Check whether all connections are correctly wired.
9) Close the device by tightening the screws on the front.
10) Switch on the power supply.
CAUTION! Incorrect measurement results.
Incorrect parameter setting, calibration or adjustment may result in incorrect
measurements being recorded. Protos must therefore be commissioned by a
system specialist, all its parameters must be set, and it must be fully adjusted.
ESD shield

12
Wiring Examples
pH measurement with Pfaudler differential probe
Impedance monitoring of measuring and reference electrode
PH 3400-033
1 Coax white
2 Coax brown
4 Green 6 Black
3 Brown
5 Blue
7 Yellow
9 Orange
8 Purple

13
Wiring Examples
Connection of sensors with VP cap
e.g. Deltatrode (Hamilton),
VP cable: VP 6-18/05
PH 3400-033
Coax core black Coax core red Green White
Signal ground
(Solution Ground)
Coax shield red + Solution Ground
Coax shield
black

14
• Calibration: Detecting deviations without readjustment
• Adjustment: Detecting deviations with readjustment
Calibration / Adjustment
Note: Function check (HOLD) active for the currently calibrated module
Current outputs and relay contacts behave as configured
NOTICE!
Without adjustment every pH meter delivers an imprecise or wrong output
value! Every pH electrode has its individual zero point and its individual slope.
Both values are altered by aging and wear.
To determine the correct pH value, the pH meter must be adjusted to the elec-
trode. The analyzer corrects the voltage delivered by the electrode with regard
to electrode zero and slope and displays it as the pH value.
Be sure to perform an adjustment after having replaced the electrode!
Procedure
First, a calibration is performed to detect the deviations of the electrode (zero,
slope). To do so, the electrode is immersed in buffer solutions whose pH value
is exactly known. The measuring module measures the electrode voltages and
the buffer solution temperature and automatically calculates the electrode zero
and slope. These data are stored in a calibration record. By “Adjustment” the
determined calibration data can be used for correction (see following page).
Parameters Determined by Calibration
of an electrode is the voltage change per pH unit. For an ideal
pH electrode, it lies at -59.2 mV/pH.
Slope
of the process solution must be detected since pH measure-
ment is temperature-dependent. Many electrodes have an
integrated temperature probe.
Temperature
is the pH value at which the pH electrode outputs the voltage
0 mV. It is different for each electrode and changes with age
and wear.
Zero

15
Adjustment means that the values determined by a calibration are taken over.
The values determined for zero and slope are entered in the calibration record.
(Cal record can be called up in the Diagnostics menu for the PH 3400(X)-033
module). These values are only effective for calculating the measured variables
when the calibration has been terminated with an adjustment. A passcode
ensures that an adjustment can only be performed by an authorized person
(Administrator). The Operator can check the current sensor data by a calibration
and inform the Administrator when there are deviations. You can use the add-
on function SW3400-107 / FW4400-1071) for granting access rights (passcodes)
and for AuditTrail (continuous data recording and backup according to FDA 21
CFR Part 11).
Calibration / Adjustment
Adjustment
Operator (without administrator
rights)
After calibration, change to measur-
ing mode. Inform Administrator.
When opening the menu (Calibration,
respective module), the Administrator
sees all data of the last calibration and
can take over the values or perform a
new calibration.
Calibration data record
Cal mode
25.6°C
8.30 pH
Slope
Product calibration
058.0 mV/pH
End Adjust
Calibration
Zero
04/30/10 12:34
+07.00 pH
Menu Display Adjustment after calibration
Administrator
With the corresponding access rights,
the device can immediately be adjust-
ed after calibration. The calibration
values are taken over for calculating
the measured variables.
Module PH 3400-033
Return
25.6°C
View/adjust calibration data record
8.30 pH
Start new calibration
Stored calibration data record
Calibration 04/30/10 12:34
Note: The display may vary depending on the device version.
1) Protos II 4400(X): FW4400-107 only available from
FRONT firmware version 02.xx.xx

16
Calibration / Adjustment
Calibration methods
One-point calibration
The electrode is calibrated with one buffer solution only.
Here, only the electrode zero point is detected and taken into account by the
Protos. One-point calibration is appropriate and permissible whenever the
measured values lie near the electrode zero point so that slope changes do not
have much of an impact.
Two-point calibration
The electrode is calibrated with two buffer solutions.
In that case, zero point and slope of the electrode can be detected and taken
into account by the Protos. Two-point calibration is required if
• the electrode has been replaced
• the measured pH values cover a wide range
• there is great difference between the measured pH value
and the electrode zero
• the pH measurement must be very accurate
• the electrode is exposed to extreme wear.
Three-point calibration
The electrode is calibrated with three buffer solutions.
Zero and slope are calculated using a line of best fit according to DIN 19268.
Sensor replacement (First Calibration)
Each time you replace the electrode, you must perform a "First Calibration".
During First Calibration, the electrode data together with the electrode type
and serial number are stored as reference values for electrode statistics.
The ”Statistics” menu of Diagnostics shows the deviations of zero, slope,
glass and reference electrode impedance, and response time of the last three
calibrations with respect to the reference values of the First Calibration.
This allows evaluation of the drift behavior and aging of the electrode.

17
For automatic cal temp detection, the Protos
measures the temperature of the buffer solution
with a temperature probe (Pt 100/ Pt 1000/
NTC30 kΩ/NTC 8.55 kΩ). If you work with
automatic temperature compensation during
calibration, a temperature probe connected to
the temperature input of the Protos must be in
the buffer solution! Otherwise, you must select
manual entry of calibration temperature. When ”Cal temp automatic” is set,
”Measured cal temp” appears in the menu.
Temperature compensation during calibration
Calibration / Adjustment
Temperature compensation
Calimatic
Return
Cal medium: Buffer solution
Knick 2.00 4.01 7.00 9.21
When changing sensors perform
First cal for statistics!
Measured cal temp
25.6 °C
7.00 pH
+025.6 °C
Proceed
Sensor replacement
Automatic temperature compensation
There are two important reasons for determining the temperature of the buffer
solution:
The slope of the pH electrode is temperature-dependent. Therefore the
measured voltage must be corrected by the temperature influence.
The pH value of the buffer solution is temperature-dependent. For calibration,
the buffer solution temperature must therefore be known in order to choose
the actual pH value from the buffer table.
During parameter setting you define whether cal temperature is measured
automatically or must be entered manually:
Manual temperature compensation
The temperature of the buffer solution must be
entered manually in the Parameter setting menu
at "Parameter setting / <PH module> / Sensor
data / Temp detection / Cal temp --> manual".
Temperature measurement is performed using a
glass thermometer, for example.
Temp detection (Administrator)
Temp probe
Measuring temp
Cal temp
25.6 °C
7.00 pH
+025.6 °C
Manual
Manual
Auto
Pt 1000
Manual
Auto
Note: The display may vary depending on the device version.

18
HOLD Function During Calibration
Behavior of the signal and relay outputs during calibration
Measuring
Calibration
Module A
Module B
Selecting the
measuring module
K2 contact
"HOLD" is
active
Module A
Calibration
Module B
Calibration
End of
calibration
(or abort)
Measuring
The current
output of
the selected
module
is in function
check (HOLD)
mode

19
Menu Display Select calibration method (pH)
Open calibration
Press menu key to select menu.
Select calibration using arrow keys,
confirm with enter, passcode 1147
(To change passcode, select:
Parameter setting / System control /
Passcode entry).
Calibration:
Select “Module PH”
Select calibration method:
• Automatic buffer recognition
• Manual entry of buffer values
• Product calibration
Calibration with sampling)
• Data entry of premeasured sensors
• Determination of nominal zero
• Temp probe adjustment (with Protos II 4400(X))
Menu selection
Return to meas
7.00 pH
25.6 °C
Select: [enter]
Lingua
Calibration
25.6 °C
Return Info
7.00 pH
Module PH 3400-033
Module PH 3400-033
25.6 °C
Return
Data entry: premeasured electrodes
Manual: entry of buffer values
Product calibration
7.00 pH
Calimatic: automatic calibration
Determination of nominal zero
When you open the Calibration
menu, the analyzer automatically
proposes the previous calibration
method. If you do not want to
calibrate, press the ”Return” softkey or
the meas key.
During calibration the module is in
function check (HOLD) mode.
Current outputs and relay contacts
of the module behave as configured
(Module BASE).
Note: The display may vary depending on the device version.

20
Automatic Buffer Recognition (Calimatic)
Automatic calibration using Knick Calimatic is performed with one, two, or
three buffer solutions. Protos automatically detects the nominal buffer value
on the basis of the electrode potential and the measured temperature. Any
sequence of buffer solutions is possible, but they must belong to the buffer set
defined during parameter setting.
The Calimatic takes the temperature dependence of the buffer value into
account. All calibration data is converted using a reference temperature of
25°C/77 °F.
During calibration the module is in function check (HOLD) mode.
Current outputs and relay contacts of the module behave as configured
(Module BASE).
NOTICE!
Only ever use fresh, undiluted buffer solutions which belong to the selected
buffer set!
Menu Display Automatic buffer recognition
Remove and rinse the electrode
(CAUTION: Electrostatic hazard.
Do not rub.),
then immerse it in the first buffer
solution.
Start by pressing softkey or enter.
Calimatic
Return
Cal medium: Buffer solution
Knick 2.00 4.01 7.00 9.21
When changing sensors perform
First cal for statistics!
Enter cal temp
25.6 °C
7.00 pH
+025.6 °C
Proceed
Calimatic
Return
Dip sensor in 1st buffer!
then ‘Start’ calibration.
25.6 °C
7.00 pH
Start
Display of selected buffer set
Select: Sensor replacement
Enter: calibration temp
Proceed by pressing softkey or enter.
Select: Calimatic
Calibration / Adjustment
Calimatic automatic buffer recognition
Sensor replacement
Note: The display may vary depending on the device version.