Knick Portavo 908 MULTI User manual

Portavo® 908 MULTI
Portable Meter
User Manual
www.knick.de
Read before installation.
Keep for future use.

2Basics
Returns
Clean and securely package the product before returning it to KnickElektronische
Messgeräte GmbH & Co. KG.
If there has been contact with hazardous substances, the product must be de-
contaminated or disinfected prior to shipment. The consignment must always be
accompanied by a corresponding return form to prevent service employees being
exposed to potential hazards.
Further information can be found at www.knick.de.
Disposal
Local codes and regulations must be observed when disposing of the
product.

3
Table of Contents
Package Contents ......................................................................................................5
Overview of the Portavo 908....................................................................................6
Intended Use.....................................................................................................................................................6
Value-Added Features ...................................................................................................................................7
Protective Cover...............................................................................................................................................8
Hook ....................................................................................................................................................................8
Display and Keypad........................................................................................................................................9
Inserting the Batteries................................................................................................................................ 10
Commissioning ....................................................................................................... 10
Connecting a Sensor................................................................................................................................... 11
Switching On the Meter............................................................................................................................. 12
Icons.................................................................................................................................................................. 13
Information............................................................................................................. 14
Calibration Record ....................................................................................................................................... 14
Sensor Information...................................................................................................................................... 14
Sensor Diagram (pH and Oxy Only)....................................................................................................... 15
Sensor Monitor.............................................................................................................................................. 16
Messages......................................................................................................................................................... 16
MemoLog (Memosens Only).................................................................................................................... 16
Device Info...................................................................................................................................................... 17
Device Test...................................................................................................................................................... 17
pH Conguration .................................................................................................... 18
ORP Conguration.................................................................................................. 20
Conductivity Conguration ................................................................................... 22
Oxygen Conguration............................................................................................ 24
pH Calibration......................................................................................................... 26
Calimatic Calibration................................................................................................................................... 26
Manual Calibration ...................................................................................................................................... 27
Data Entry Calibration ................................................................................................................................ 27
pH/ORP Combo Sensor Calibration....................................................................................................... 28
ORP Calibration ...................................................................................................... 28
ISFET Calibration .................................................................................................... 29
Conductivity Calibration........................................................................................ 30
Auto Calibration............................................................................................................................................ 30
“Entry of Solution”Calibration................................................................................................................. 31
Cell Constant / Cell Factor Calibration .................................................................................................. 31
Installation Factor Calibration.................................................................................................................. 31
Zero Calibration ............................................................................................................................................ 31

4Table of Contents
Oxygen Calibration ................................................................................................ 32
Calibration in Air........................................................................................................................................... 32
Zero Calibration ............................................................................................................................................ 33
Data Entry Calibration ................................................................................................................................ 33
Measurement.......................................................................................................... 34
Toggling the Measurement Display ...................................................................................................... 34
Printing.................................................................................................................... 35
Printing Currently Measured Values...................................................................................................... 35
Printing a Calibration Record................................................................................................................... 36
Data Logger ............................................................................................................ 37
Operating Modes of the Data Logger (Logger Type) ...................................................................... 38
Conguring the Data Logger................................................................................................................... 40
Increasing the Battery Life ........................................................................................................................ 40
Starting/Stopping the Data Logger....................................................................................................... 42
Viewing the Logger Data........................................................................................................................... 42
Delete Logger Data...................................................................................................................................... 42
Paraly SW112 PC Software..................................................................................... 44
Error and Status Messages..................................................................................... 45
“Sensoface” Messages................................................................................................................................. 45
Sensoface Criteria......................................................................................................................................... 46
Info and Help Texts ...................................................................................................................................... 48
Error Messages .............................................................................................................................................. 48
Options ................................................................................................................... 50
Option 001 SOP (Standard Operating Procedure) ........................................................................... 50
Entering the Rescue PIN Code................................................................................................................. 55
Option 002 Temp.cal ................................................................................................................................... 58
Option 003 Multichannel .......................................................................................................................... 59
Product Line............................................................................................................ 64
Accessories/Options.................................................................................................................................... 64
pH, ORP Accessories.................................................................................................................................... 66
Accessories for Conductivity.................................................................................................................... 67
Accessories for Oxygen .............................................................................................................................. 68
Specications.......................................................................................................... 69
Buer Tables ........................................................................................................... 75
Index........................................................................................................................ 86

5
Package Contents
Check the shipment to ensure it is complete and undamaged.
The package of the Portavo 908 MULTI includes:
• Device, incl. premounted quiver
• 4 batteries (AA)
• Carrying strap
• USB cable, 1.5 m
• Safety Guide
• Quickstart Guide in various languages
• Test report 2.2 according to EN 10204
User Manuals, the Paraly SW112 PC software, and other product information can be
downloaded from www.knick.de.

6
Intended Use
The Portavo 908 MULTI is a portable
multiparameter meter for use with
Memosens sensors or the SE340 optical
oxygen sensor. The micro USB port allows
the meter to be connected to a printer for
printing currently measured values or a
calibration record including sensor data.
The meter automatically recognizes the
connected sensor and accordingly selects
the corresponding process variable. By
simply replacing the sensor, the meter can
be used for measuring conductivity, pH/
ORP or oxygen (also optical).
Operation is simple and intuitive, supported
by detailed information and help texts.
Overview of the Portavo 908
The meter stands out by the following features:
• Use of digital Memosens sensors or the SE340 optical oxygen sensor
• A detachable quiver protects the sensor and prevents it from drying out.
Furthermore, it can be used for calibration.
• The rugged housing is made of a high-performance polymer. It provides high im-
pact resistance and dimensional stability even when exposed to extreme moisture.
• Scratch-proof clear glass display, perfectly readable even after years.
• Long operating time with one set of batteries (4x AA) or use of a Li-ion battery for
reliable operation even at high or very low operating temperatures
• Data logger with 10,000 values
• Micro USB port for communication with Paraly SW112 software for data evaluation
of digital sensors (Memosens) or connecting a printer
• Sensoface icons provide single-glance information on the sensor condition
• Real-time clock and indication of battery charging level
• Automatic compensation of ambient pressure for oxygen measurement
• At measuring temperatures from -20 to 100 °C / -4 to 212 °F, the temperature
detector can be automatically identied.
Quiver

7
Overview of the Portavo 908
Value-Added Features
Memosens
The Portavo 908 can communicate with Memosens sensors.
These digital sensors are automatically identied and the meter
switches to the appropriate measurement method. When a
Memosens sensor is connected to the meter, it is indicated by
the logo shown on the right. Furthermore, Memosens allows the
storage of calibration data, which remains available and can still
be used when the sensor is connected to another Memosens-
capable device.
Sensoface
Sensoface provides quick information on the sensor condition.
The three“smiley”faces as shown on the right represent the
sensor condition during measurement and after a calibration.
When the condition deteriorates, a status message gives a further
indication of the cause.
Calimatic (pH)
Calimatic is a very convenient method for pH calibration with au-
tomatic buer recognition. You only have to select the buer set
with the buers used. The buers can then be used in any order.
Digital Optical Oxygen Measurement with SE340
Digital optical oxygen measurement reduces maintenance and
simplies handling.
MemoView ZU1059
With the MemoView accessory, contactless querying of mea-
suring points is possible when using Memosens without on-site
display, e.g., MemoRail, or the Stratos Multi and Protos II 4400
transmitters. The measured values and sensor data are displayed
on the Portavo.

8Overview of the Portavo 908
Protective Cover
The front of the meter is protected
by a cover, which can be completely
ipped over and secured to the back
for operation.
Hook
A fold-out hook on the back allows the
meter to be suspended. This leaves your
hands free for the actual measurement.
The nameplate is located beneath the
hook.
Protective Cover and Hook
Combined
The two parts can be combined to form
a benchtop stand, enabling convenient
and fatigue-free work with the device at
a laboratory table or desk.

9
Overview of the Portavo 908
Display and Keypad
Display and keypad correspond directly via softkeys.
Softkeys Function is shown in the display above the key
Arrow keys Select / adjust entries
enter Conrm an adjustment
on/o Switch on / o
meas Switch on / Go directly to measuring mode / Toggle the display /
Display time and date
Menu Selection
Information
Back
Menu Icons
Information
Calibration
Data logger
Conguration
Start logger

10 Commissioning
Inserting the Batteries
With four AA batteries, the Portavo has an
operating time of up to 500 h when oper-
ated in logger mode (see page 40).
Open the battery compartment on the
rear of the device. Be sure to observe the
correct polarity when inserting the batter-
ies (see markings in the battery chamber).
Close the battery compartment cover and
fasten it nger tight.
A special lithium-ion battery (ZU0925) suited to the battery compartment is avail-
able for the Portavo 908. Only this battery type can be charged directly from the USB
port.
A battery icon in the display indicates the battery power level:
Icon fully lled Batteries at full capacity.
Icon partially lled Battery capacity is sucient.
Icon empty Battery capacity not sucient.
Calibration is possible, no logging.
Icon blinks Only a few operating hours remaining, measure-
ment is still possible.
NOTICE! It is absolutely necessary to replace the
batteries.
Check the shipment for transport damage and completeness (see Package
Contents).
CAUTION!
Do not operate the device when one of the following conditions applies:
• the device shows visible damage
• failure to perform the intended function
• prolonged storage at temperatures above 70 °C / 158 °F
• after severe transport stresses
In this case, a professional routine test must be performed.
This test should be carried out at our factory.

11
Connecting a Sensor
You can connect a Memosens sensor for pH/ORP, conductivity or oxygen measure-
ment to the Portavo 908. You can also connect the Model SE340 optical oxygen
sensor. The meter automatically recognizes the connected sensor and accordingly
selects the corresponding process variable. Memosens is signaled in the display.
In the basic conguration, note that only one sensor may be connected to the
meter at a time.
Option 003 Multichannel enables simultaneous use of two sensors; see p.59.
Commissioning
Memosens sensors have a cable coupling, which allows convenient replacement of
sensors while the cable remains connected to the meter.
The connecting cable is connected to socket bor e.
Connections
a - Micro USB port
b - M8, 4 pins, for Memosens lab cable
c - Not used
d - Not used
e - M12, 8 pins, for flexible connecting
cable for Memosens sensors or SE340
sensor (optical oxygen)
a b c d e

12
Switching On the Meter
The meter can be switched on by pressing the meas or on/o key.
If you press meas, the meter immediately switches to measuring
mode.
After pressing the on/o key, the meter displays selected sensor infor-
mation, incl. adjustment data, before it switches to measuring mode.
Commissioning
Login (Option 001 SOP)
When using Option 001 SOP and with user management enabled, you will be
prompted to enter your log-in data when the device starts; see p. 54:
NextBack
PIN code
Enter your log-in data.
User
PIN code
User 1
****

13
Hold value
Menu
No sensor connected
6.75
24.1 °C
pH
Error message
Battery
charging level
Sensoface
Memosens sensor
Temperature
Icons
Important information about the state of the device:
Left softkey
Process variable
Right softkey
Commissioning

14
pH Oxy CondORP
Calibration Record
Shows the data of the last calibration performed on the currently connected sensor.
When the right softkey has been set to “Print” in the Conguration menu, it can be
used to print out the calibration record (via micro USB port).
Information
Sensor Information
Shows the data of the currently connected sensor. When MemoLog has been ac-
tivated (in the Conguration menu), you can save the sensor data in the device by
pressing the Save softkey. The following table shows the sensor information for the
dierent sensors:
pH/
pH/ORP**
Cond Oxy ISFET ORP Optical
Oxy
Manufacturer x x x x x x
Order no. x x x x x x
Sensor serial no. x x x x x x
Membrane serial no. x
TAG x x x x x
SW version x x x x x x
HW version x x x x x
Calibration*)x x x x x x
Zero point x x x
Slope x x x x
ORP calibration*) **)x
Correction x
Nom. cell constant x
Temp oset x x x x
Sensor operating time x x x x x x
Membrane operating
time x
Wear x x x
SIP x x x x x
CIP x**)x
Autoclaving** x**)
Cell constant x
Operating point x
* latest calibration ** for pH/ORP combo sensor only
1) From within measuring mode, press the Menu softkey.
2) Select “Information” and conrm by pressing enter.
3) Select the desired submenu and conrm by pressing enter.
The dierent submenus are described below.

15
pH Oxy
Sensor Diagram (pH and Oxy Only)
Provides single-glance information on the following parameters of the connected
sensor:
• Slope
• Zero point (operating point with Memosens ISFET)
• Sensocheck (pH) or leakage current (ISFET and Oxy)
• Response time
• Calibration timer
• Wear (Memosens)
Parameters which cannot be checked are shown as inactive (gray) and are set to
100%.
The parameter values should lie between the outer (100%) and inner (50%) hexa-
gon. When a value enters the inner hexagon (<50%), the corresponding caption text
ashes red (see example).
Information
Help
Back
Network Diagram
pH
Response time
Sensocheck
Zero point
Calibration timer
Wear
Slope
Example: Radar chart for a digital pH sensor (Memosens)

16
pH Oxy CondORP
Messages
Shows all active error and status messages as well as supplementary help texts;
see p. 45.
MemoLog (Memosens Only)
Displays the individual calibration records stored in the device. You have the possibil-
ity to delete individual entries or all entries. The following parameters are displayed:
• Sensor type
• Serial no.
• TAG
• Calibration date
• Zero point
• Slope
• Cell constant (Cond sensor)
• Operating point (ISFET sensor)
Background: The device provides a calibration data logger, which must be activated
in the conguration menu. With“MemoLog” activated, up to 100 calibration records
can be directly saved to the device. After every calibration, the complete Memosens
data will be recorded. Convenient management of the calibration data is possible
using the MemoSuite or Paraly SW112 software.
MemoLog is not suitable for SE340 (optical oxygen sensor).
Information
Sensor Monitor
Shows the raw values available from the connected sensor:
pH mV, temperature, glass impedance
pH ISFET mV, leakage current, temperature
ORP mV, temperature
Cond Resistance, conductance, temperature
Oxy Sensor current, leakage current, polarization voltage,
partial pressure, air pressure, temperature
Oxy, optical Partial pressure, temperature

17
pH Oxy CondORP
Device Info
Shows the following device information:
• Name of station
• Serial number
• Software version
• Hardware version
• Air pressure
• Battery
Device Test
A device self-test is automatically run in the background at regular intervals. It
checks the memory modules listed below. A green checkmark shows that the test
was successful.
• FLASH program memory
• FLASH data memory
• FLASH parameter memory
• RAM (working memory)
Display Test
1) Select “Display test”and press enter.
2) The display lights up red, green, blue, and then white.
3) Press any key to stop the test.
Keypad Test
1) Select “Keypad test” and press enter.
2) Press all nine keys one after the other.
A green checkmark shows that a key functions properly.
3) Press any key to stop the test.
Information

18
pH
Conguration
pH Conguration
1) From within measuring mode, press the Menu softkey.
2) Select “Conguration” and press enter to conrm.
3) Adjust the settings as required.
The following table gives you an overview. Factory settings are shown in bold print.
Further menu items appear when options are enabled. See “Options,” p. 50.
Menu selection “pH conguration” – part 1
Language Deutsch | English | Español | Italiano | Français |
Português | 中文
Auto-o O | 5 min | 10 min | 30 min | 60 min
Temperature °C | °F
Right softkey Start/Stop logger | Hold value | Print
+ pH sensor1)
Display format 0.00 pH | 0.000 pH
Wear On | O
Count autoclaving
cycle2)
Yes | No
Devaluate sensor2) Yes | No
+ Calibration1)
Calibration timer O | On
Monitoring O | On3)
Interval 00 … 99 days
Calibration mode Calimatic | Manual | Data entry | ORP2) |
ISFET zero4)
Cal points Auto | 1-point | 2-point | 3-point
1) “+” indicates that sub-items can be brought up by pressing the enter key.
2) with pH/ORP combo sensor
3) If the calibration timer has expired, measured values are no longer displayed.
4) With ISFET sensor

19
pH
Conguration
Menu selection “pH conguration” – part 2
1) “+” indicates that sub-items can be brought up by pressing the enter key.
2) Parameter can be congured using the Paraly SW 112 software.
Buer set Mettler-Toledo
Knick CaliMat
Ciba
NIST Technical
NIST Standard
Hach
WTW
Hamilton
Reagecon
DIN19267
Metrohm
User buer 12)
2.00/4.01/7.00/9.21
2.00/4.00/7.00/9.00/12.00
2.06/4.00/7.00/10.00
1.68/4.00/7.00/10.01/12.46
1.679/4.006/6.865/9.180
4.01/7.00/10.01/12.00
2.00/4.01/7.00/10.00
2.00/4.01/7.00/10.01/12.00
2.00/4.00/7.00/9.00/12.00
1.09/4.65/6.79/9.23/12.75
4.00/7.00/9.00
MemoLog O | On
TAG O | On
+ Time/Date1)
Time format 24 h | 12 h
Date format dd.mm.yyyy | yyyy-mm-dd | dd.mm.yyyy |
mm/dd/yyyy
Time hh:mm:ss
Date as per date format
+ Display1)
Appearance Modern | Retro
Lighting Permanent | 60 min | 30 min | 10 min |
5 min | 1 min | 30 sec
Brightness Bright | Standard | Dim
+ Data logger1)
(for menu, see page
41)
+ Printer
Driver Auto | HP PCL | Epson | Samsung | IBM
Paper A4 | Small
+ Options1) 001 SOP
002 Temp.cal
003 Multichannel
Enter TAN to enable option
(see page50)
Factory setting Yes | No
Note: Resetting the device to its factory settings
will delete all logger data.

20
ORP
ORP Conguration
1) From within measuring mode, press the Menu softkey.
2) Select “Conguration” and press enter to conrm.
3) Adjust the settings as required.
The following table gives you an overview. Factory settings are shown in bold print.
Further menu items appear when options are enabled. See “Options,” p. 50.
Menu selection “ORP conguration”– part 1
Language Deutsch | English | Español | Italiano | Français |
Português | 中文
Auto-o O | 5 min | 10 min | 30 min | 60 min
Temperature °C | °F
Right softkey Start/Stop logger | Hold value | Print
+ Calibration1)
MemoLog O | On
TAG O | On
+ Time/Date1)
Time format 24 h | 12 h
Date format dd.mm.yyyy | yyyy-mm-dd | dd.mm.yyyy |
mm/dd/yyyy
Time hh:mm:ss
Date as per date format
+ Display1)
Appearance Modern | Retro
Lighting Permanent | 60 min | 30 min | 10 min |
5 min | 1 min | 30 sec
Brightness Bright | Standard | Dim
Conguration
1) “+” indicates that sub-items can be brought up by pressing the enter key.