Knick PORTAVO 904X PH User manual

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Portavo® 904(X) PH
Portable Meter
User Manual

3Basics
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
The local codes and regulations must be observed when disposing of the
product.
Repair
The meter cannot be repaired by users. For inquiries regarding repairs, please
contact Knick Elektronische Messgeräte GmbH & Co. KG at www.knick.de.

4Table of Contents
Package Contents ............................................................................... 6
Overview of the Portavo 904(X) PH .................................................. 7
Intended Use................................................................................................................7
Value-Added Features ..............................................................................................8
Protective Cover..........................................................................................................9
Hook................................................................................................................................9
Display.........................................................................................................................10
Keypad ........................................................................................................................11
Commissioning .................................................................................12
Inserting the Batteries ...........................................................................................12
Batteries for Application in Hazardous Locations........................................13
Connecting a Sensor.............................................................................................. 14
Switching On the Meter........................................................................................15
Icons.............................................................................................................................15
Conguration....................................................................................16
Calibration ........................................................................................17
Measurement....................................................................................25
Toggling the Measurement Display .................................................................25
Manually Adjusting the Temperature ..............................................................25
Data Logger ......................................................................................26
Operating Modes of the Data Logger (Logger Type) .................................27
Data Logger Menu.................................................................................................. 29
Conguring the Data Logger .............................................................................29
Conguring the Logger Type..............................................................................30
Starting the Data Logger using CONT............................................................. 31
Starting the Data Logger using START ...........................................................31
Displaying the Logger Data ................................................................................32
Stopping the Data Logger .................................................................................. 33
Clearing the Data Logger ....................................................................................33
Clock ..................................................................................................34

5
Table of Contents Table of Contents
Options..............................................................................................35
Option 001 SOP (Standard Operating Procedure) ......................................35
Option 002 TEMP.CAL (Temperature Calibration)........................................35
Enabling Options / TAN Input.............................................................................36
Access Codes for CONF, CAL, and Data Logger ............................................ 37
Inputting the Rescue TAN.....................................................................................38
Paraly SW112 PC Software..............................................................39
Error Codes and Device Messages...................................................40
“Sensoface” Messages............................................................................................41
Error Messages .........................................................................................................42
Product Line......................................................................................43
Accessories/Options............................................................................................... 43
pH Sensors.................................................................................................................44
Knick CaliMat Buer Solutions ...........................................................................45
Specications.................................................................................... 46
Buer Tables .....................................................................................50
Index..................................................................................................60

6Package Contents
Check the shipment for transport damage and completeness.
The package of the Portavo 904(X) PH includes:
• Meter, incl. premounted quiver
• 4 batteries (AA)
• Carrying strap
• USB cable, 1.5 m
• Quickstart overview for attaching to the inside of the protective cover
(German, English, French)
• Safety guide
• Quickstart guide in various languages
• Test report 2.2 according to EN 10204
For Portavo 904X PH Ex version:
• EU Declaration of Conformity
• Control drawing no. 209.009-110 (ATEX, IECEx, cFMus)
User manuals, certicates, the Paraly SW112 PC software, and other product infor-
mation can be downloaded from www.knick.de.

7
Intended Use
The Portavo 904(X) PH is a portable pH me-
ter. With a plain text line on a high-contrast
LCD, operation is largely intuitive. The device
variant 904X PH is available for applications
in hazardous locations up to Zone 0.
The meter stands out by the following fea-
tures:
• Use of digital Memosens sensors
• Memosens sensors and DIN pH sensors
can be used on one device.
• A detachable quiver protects the sensor
and prevents it from drying out. Further-
more, it can be used for calibration.
• The rugged housing is made of a
high-performance polymer. It provides
high impact resistance and dimensional
stability even when exposed to extreme
moisture.
Overview of the Portavo 904(X) PH
Quiver
• Scratch-proof clear glass display, perfectly readable even after years
• Very long operating times with one set of batteries (4x AA) or use of a Li-ion bat-
tery for reliable operation even at high or very low operating temperatures (Li-ion
battery not suited for Portavo 904 X PH for application in hazardous locations)
• Data logger with 5000 values
• Micro USB port for communication with Paraly SW112 PC software for data
evaluation of digital sensors (Memosens)
• Sensoface icons provide single-glance information on the sensor condition
(page40)
• Calibration with“Calimatic” automatic buer recognition (page 17)
• Manual calibration by free specication of buer values
• Real-time clock and display of battery charging level
• At measuring temperatures from -20 to +100 °C the temperature detector can be
automatically identied.

8
Value-Added Features
Memosens
The Portavo 904 can communicate with
Memosens sensors. When these digital sensors are
connected to the meter, they are automatically
identied and indicated by the logo shown on the
right. Furthermore, Memosens allows the storage
of calibration data, which will be available and
can still be used when the sensor is connected to
another Memosens-capable device.
Sensoface
Sensoface provides quick information on the sen-
sor condition. The three“smiley” faces as shown
on the right represent the sensor condition during
measurement and after a calibration. When the
condition deteriorates, an “INFO …” message
provides additional information on the cause.
Automatic Calibration with Calimatic
Calimatic is a very convenient method for pH
calibration with automatic 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.
As delivered, this calibration method is preset. It
can be adjusted or disabled in the conguration
menu.
Overview of the Portavo 904(X) PH

9
Protective Cover
The front of the meter is protected by a
cover, which can be completely ipped
over and secured to the back for oper-
ation. A label on the inner side of the
cover explains the control functions and
device messages.
Overview of the Portavo 904(X) PH
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.
Overview of the Portavo 904(X) PH

10
Display
The meter has a three-line display for
showing alphanumeric information
such as measurement and calibration
data, temperatures, and date/time.
Additional information is provided by
means of icons (Sensoface, battery
icon, etc.).
Some typical displays are shown here.
Measuring
(display of measured value, tempera-
ture, date and time)
Calibration – step 1
Logger data
(display of measured value, memory
location, temperature, date and time)
Clock
(display of hours and minutes,
seconds and date).
End of calibration
(display of slope)
Overview of the Portavo 904(X) PH

11
Keypad
The keys of the membrane keypad have a
noticeable pressure point.
They have the following functions:
on/o Switches the meter on and
displays the device and
calibration data
(see Start-up)
meas Switches the meter on /
Activates measuring mode /
Data logger, stopping
cal Start calibration
set Activates conguration /
Conrms entries
clock Displays time and date, allows
setting the clock using set
RCL View stored values
STO Holds and saves a measured
value, allows setting and
starting of the logger by
pressing set (page 26)
When this icon is displayed,
you can use the arrow keys
for navigation.
Overview of the Portavo 904(X) PHOverview of the Portavo 904(X) PH

12 Commissioning
Inserting the Batteries
With four AA batteries, the Portavo has an
operating time of over 1000h.
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.
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.
A special lithium-ion battery (ZU 0925) suited to the battery compartment is
available for the Portavo 904. Only this battery type can be charged directly from
the USB port.
Note: Not available for the Portavo 904X (device variant for applications in
hazardous locations).
Note on Use in Hazardous Locations
WARNING! Impairment of explosion protection.
Only open the battery compartment of the Portavo 904X outside the hazardous
location.
• The device cannot be repaired by users. For inquiries regarding repairs, please
contact Knick Elektronische Messgeräte GmbH & Co. KG at www.knick.de.
• Never use the USB port within the hazardous location.

13
Commissioning Commissioning
WARNING! Impairment of explosion protection.
When using the Portavo 904X (device variant for applications in hazardous loca-
tions) in a hazardous location, only the battery types listed below may be used.
The batteries must be from the same manufacturer and of identical type and
capacity. Never use new and used batteries together (see also Control Drawing
209.009-110).
Batteries for Application in Hazardous Locations
Batteries (4x each) Temperature class Ambient temperature range
Duracell MN1500 1) T4 -10 °C ≤ Ta ≤ +40 °C
Energizer E91 T3 -10 °C ≤ Ta ≤ +50 °C
Power One 4106 T3 -10 °C ≤ Ta ≤ +50 °C
Panasonic Pro Power LR6 T3 -10 °C ≤ Ta ≤ +50 °C
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 Max. 10 operating hours remaining, measure-
ment is still possible
NOTICE! It is absolutely necessary to replace
the batteries.
1) The Duracell Plus Power 4ct (EAN: 5000394017641) is an MN1500 battery.

14
Connecting a Sensor
The Portavo 904(X) PH provides several connections so that many types of sensors
can be used for measurement. Note that only one sensor may be connected to the
meter at a time.
The meter automatically recognizes a connected Memosens sensor and switches
accordingly. Memosens is signaled in the display.
Separate Temperature Probe
Note: Temperature measurement using a separate temperature probe is only
possible when no Memosens sensor is connected.
After power-on, a separate temperature probe is automatically recognized. If you
want to replace the temperature probe, you must switch o the meter and then
switch it on again.
NOTICE! Always make sure that a sensor is connected to the meter before starting
measurement.
Explanation: The analog pH input of the Portavo is an electrometer amplier with
an extremely high-impedance. When the sensor is not in contact with the medium
or not connected to the meter, electric charges on the input can generate arbitrary,
stable pH or mV values, which will be shown in the display.
Memosens sensors have a cable coupling that allows for the convenient replace-
ment of sensors while the cable remains connected to the meter. The connecting
cable is connected to socket b(M8, 4 pins for Memosens sensors).
Commissioning
WARNING! Impairment of explosion protection.
Never use digital Memosens sensors or Memosens cables without Ex approval in a
hazardous location. For these applications, you must use Memosens sensors with
Exapproval. These sensors and the Memosens Ex cable are marked by an orange-red
ring.
a - Micro USB port
b - M8, 4 pins, for Memosens lab cable
c - Temperature probe GND
d - Temperature probe
e - pH socket in acc. with DIN19262 for
analog sensors
a b c d e

15
Switching On the Meter
When you have connected the sensor, you can switch on the meter
by pressing the meas or on/o key.
If you press meas, the meter immediately switches to measuring
mode.
Analog sensors:
After pressing the on/o key, the meter displays selected adjust-
ment data before it switches to measuring mode.
Memosens sensors:
After pressing the on/o key, the meter displays selected sensor
information, incl. adjustment data, before it switches to measuring
mode.
Alternating Use of Analog and Memosens Sensors
The meter initially starts in analog measuring mode. If a Memosens sensor is con-
nected and detected during operation, the meter switches to Memosens.
If the Memosens sensor is now removed, the meter remains in Memosens mode. If
you want to resume measurements with an analog sensor, the meter needs to be
restarted by pressing the on/o key. The Memosens cable may remain connected.
Error message
Battery
charging
level
Sensoface
Memosens sensor
Temperature
detector
Icons
Important information about the state of the device:
Date
Process variable
Logger active Time
Commissioning
Select menu items with arrow keys
Logger type

16
Press the set key to access conguration mode.
Conguration is required to match the connected sensor and the
desired measurement performance. Furthermore, you can select the
suitable calibration method. The following table gives you an over-
view. Factory settings are shown in bold print.
Measurement
“SETUP” view Select using arrow keys, conrm by pressing set.
pH x.xx | pH x.xxx | mV
OFF | Date + Time | Date | Time
OFF | 1 ... 99 days
CALIMATIC | MANUAL | DATA INPUT | ISFET-ZERO | CAL SOP
(Option 001) | ORP OFFSET (for ORP or pH/ORP combo sensors)
| TEMP. OFFSET (Option 001) | FREE CAL
1 | 2| 3 | 1-2-3 (for CALIMATIC, Manual, FREE CAL)
-01- Mettler-Toledo 2.00|4.01|7.00|9.21
-02- Knick CaliMat 2.00|4.00|7.00|9.00|12.00
-03- Ciba (94) 2.06|4.00|7.00|10.00
-04- NIST Technical 1.68|4.00|7.00|10.01|12.46
-05- NIST Standard 1.679|4.006|6.865|9.180
-06- HACH 4.01|7.00|10.01|12.00
-07- WTW techn. buers 2.00|4.01|7.00|10.00
-08- Hamilton 2.00|4.01|7.00|10.01|12.00
-09- Reagecon 2.00|4.00|7.00|9.00|12.00
-10- DIN19267 1.09|4.65|6.79|9.23|12.75
-U 01- loadable via Paraly SW 112 (User)
OFF | 12h | 6h | 1h | 0.1h
°C | °F
24h | 12h
DD.MM.YY | MM.DD.YY
Enter TAN to enable option
(see page36)
OFF (0000) | 0001 ... 9999
(with option 001 SOP only, see page37)
NO | YES (reset to factory settings)
Note: All data logger entries will be deleted.
This icon prompts you to select a menu item
using the arrow keys – the selection is conrmed by pressing set.
Conguration

17
Measurement
cal
CAL
CALIMATIC
Calibration method, the number of calibration points and
the buer set have been selected in the conguration
menu.
CAL 1/2/3
PRESS CAL
Immerse the sensor in the 1st/2nd/3rd buer solution.
It does not matter which buer solution is taken rst.
cal
pH, mV value, tem‑
perature
Depending on the number of calibration points, the proce‑
dure described above for CAL 1/2/3 is repeated.
mV value blinks until calibration is completed, then successive display of:
CAL DATA
1/2/3 CAL POINTS
ZERO POINT
SLOPE
The meter then automatically returns to measuring mode.
CALIMATIC Calibration
(Calibration with automatic buer recognition)
The calibration method is selected in the conguration menu.
Calibration is required to adjust the sensor to the meter. It is indis‑
pensable for achieving comparable and reproducible measurement
results.
Note: To abort calibration, you can press meas at any time. This will be conrmed
by the "CAL ABORTED” display message. Exception: When you have selected "CAL
POINTS 1‑2‑3" and the rst calibration step has been completed, the calibration
process cannot be stopped any more.
Calibration

18
Measurement
cal
CAL
MANUAL
The number of calibration points has been
selected in the conguration menu.
CAL 1/2/3
PRESS CAL
cal
pH display blinks
PRESS CAL
Take the temperature‑corrected pH value from
the buer description and enter it using .
cal
mV display blinks
Depending on the number of calibration points,
the procedure described above for CAL 1/2/3 is
repeated.
mV value blinks until calibration is completed, then successive display of:
CAL DATA
1/2/3 CAL POINTS
ZERO POINT
SLOPE
The meter then automatically returns to measuring mode.
MANUAL Calibration
(Manual calibration)
The calibration method is selected in the conguration menu.
Note: To abort calibration, you can press meas at any time. This will be conrmed
by the "CAL ABORTED” display message. Exception: When you have selected "CAL
POINTS 1‑2‑3" and the rst calibration step has been completed, the calibration
process cannot be stopped any more.
Calibration

19
Measurement
cal
CAL
DATA INPUT
ZERO POINT Use  to select the zero point value.
cal
SLOPE Use  to select the slope value.
cal
The calibration data will be displayed successively:
Date and time
ZERO POINT
SLOPE
The meter then automatically returns to measuring mode.
DATA INPUT Calibration
(Calibration by entering known sensor values)
The calibration method is selected in the conguration menu.
Note: To abort calibration, you can press meas at any time.
Calibration

20
ISFET Calibration
– available if an ISFET sensor is connected
The calibration method is selected in the conguration menu.
Measurement
cal
CAL
ISFET‑ZERO
Select the “ISFET‑ZERO”calibration mode to set
the operating point for the rst sensor calibra‑
tion.
cal
“pH setpoint” blinks Use  to set the buer solution value.
Immerse the sensor in buer solution.
cal
Calibration is performed. The ISFET operating point is displayed.
The meter then automatically returns to measuring mode.
Keep the sensor connected to the Portavo while performing the next calibration
step. The operating point will be taken into account for the following calibration.
When using ISFET sensors for pH measurement, the individual operating point of the
sensor rst needs to be determined, and should be in the pH6.5...pH7.5 range. The
sensor is immersed in a buer solution with a pH value of 7.00 for this purpose.
Note: The operating point only needs to be determined once for each ISFET sensor.
To abort calibration, you can press meas at any time.
Calibration