Contents of this manual can be modified without previous
announcement. Technical modifications reserved. Greatest
possible care was used on the correctness of the
information in this manual. If errors should be discovered
nevertheless, Hamilton Bonaduz AG is pleased to be informed about it. Regardless of this, Hamilton Bonaduz AG
cannot assume liability for any errors in this manual or for
their consequences.
3Operating Instructions pH/ORP Arc Sensors
GENERAL INFORMATION • LIABILITYSAFETY PRECAUTIONS AND HAZARDS
1 General Information
1.1 Intended Use
The EasyFerm and Polilyte Arc sensor families (pH/ORP Arc
sensors) are intended for the measurement of pH and ORP
(Oxidation Reduction Potential).
ATTENTION! pH/ORP Arc sensors are not intended
for hazardous atmospheres.
ATTENTION! The pH/ORP Arc sensors has a
built-in temperature sensor (NTC 22 kOhm). This
temperature sensor is to be used only for monitoring
the sensor conditions, not for controlling the process
temperature.
ATTENTION! The measurement values transmitted
over wireless communication are not intended to be
used for process control.
1.2 About this Operating Instruction
These Operating Instructions are designed to support the integration, operation and qualification of the EasyFerm and Poliyte
Arc sensor families. To achieve this, it will describe the features
of EasyFerm and Poliyte Arc sensor families and its integration
in Process Control Systems (PCS). Both the hardware and the
communication between the pH/ORP Arc sensor and Process
Control Systems are detailed in this manual. After reading this
manual the user should be capable of installing and operating
pH/ORP Arc sensors.
ATTENTION! Essential information for avoiding
personal injury or damage to equipment.
NOTE: Important instructions or interesting information.
tenance and regular replacement of the sensors. In the case of
critical sensor applications, Hamilton recommends using back-up
measuring points in order to avoid consequential damages. The
user is responsible for taking suitable precautions in the event of a
sensor failure.
NOTE: The pH/ORP Arc sensor is not intended and
specified as a safety device. A SIL (Safety Integrity Level)
certification is not available. It is in the sole responsibility
of the user to validate the pH/ORP Arc sensor according
the safety requirements of his application.
3 Safety Precautions
and Hazards
ATTENTION! Read the following safety instructions carefully before installing and operating the
pH/ORP Arc sensor.
3.1 General Precautions
For safe and correct use of pH/ORP Arc sensor, it is essential that
both operating and service personnel follow generally accepted
safety procedures as well as the safety instructions given in this
document, the pH/ORP Arc sensor operation instruction manual.
The specification given in the «Specification Sheet» as regards
temperature, pressure etc. may under no circumstances be exceeded. Inappropriate use or misuse can be dangerous.
The lifetime of the pH/ORP Arc sensor highly depends on the
specific conditions of the application. Temperature, pressure,
chemicals used may accelerate the ageing of the pH/ORP Arc
sensor. See chapter 7 for replacement conditions.
Cleaning, assembly and maintenance should be performed by
personnel trained in such work. Before removing the sensor from
the measuring setup, always make sure the no process medium
can be accidentally spilled. When removing and cleaning the
sensor, it is recommended to wear safety goggles and protective
gloves. The sensor can not be repaired by the operator and has
to be sent back to Hamilton for inspection.
Necessary precautions should be taken when transporting the
sensors. For repair or shipment the sensor should be sent back
in the original reusable packaging box. Every pH/ORP Arc sensor
sent back for repair must be decontaminated.
2 Liability
The liability of Hamilton Bonaduz AG is detailed in the document
«General Terms and Conditions of Sale and Delivery».
Hamilton is expressly not liable for direct or indirect losses arising
from use of the sensors. It must in particular be insured in this
conjunction that malfunctions can occur on account of the inherently limited useful life of sensors contingent upon their relevant
applications. The user is responsible for the calibration, main-
If the conditions described in these operating instructions manual
are not adhered to or if there is any inappropriate interference
with the equipment, all of our manufacturer’s warranties become
obsolete.
3.2 Operation of pH/ORP Arc Sensor
When using the pH/ORP sensors in process environment suitable protective clothing, safety glasses and protective gloves
5Operating Instructions pH/ORP Arc Sensors
SAFETY PRECAUTIONS AND HAZARDSPRODUCT DESCRIPTION
must be worn, particularly when dealing with a malfunction
where the risk of contamination from spilled liquids exists. Installation and maintenance of sensors must be performed only by
trained personnel. The mobile devices and sensors must be
used for their intended applications, and in optimum safety and
operational conditions.
Use only wired digital or analog connection for the process control. The Arc wireless interface is designed for sensor monitoring,
maintenance and service purposes.
Make sure that the PG13,5 thread and the O-ring are not damaged when screwing the sensor into the process. O-rings are
consumable parts which must be exchanged regularly (at least
once per year). Even when all required safety measures have
been complied with, potential risks still exist with respect to leaks
or mechanical damage to the armature. Wherever there are seals
or screws, gases or liquids may leak out undetected. Always
make sure that no process medium can be accidentally spilled
before removing the sensor from its measurement setup. Make
sure that no air or gas bubbles sticks to the sensitive part of the
sensor. As a consequence, the measurement value could be unstable. Do not put stress on the system by vibration, bending or
torsion. Before use, verify that the sensor is properly configured
for your application.
Failure to observe and carry out the maintenance procedures
may impair the reliability and correct functioning of the measurement system.
The integrated 4–20 mA analog output has been configured
according to factory defaults. You can find full details, including
serial number and most important specifications, on the certificate provided with each sensor. Before use, verify that the sensor
is properly configured for your application.
parts. Carefully follow all the instructions in chapter 5.3 to avoid
electrical damage to the sensor. The contacts must be clean and
dry before sensor is connected to the cable.
ATTENTION! Switch off the power supply and
unplug the connector before dismounting the pH/ORP
Arc sensors.
ATTENTION! If the power supply (230VAC/24VDC)
is switched off or disconnected the reading on the
PCS is wrong.
3.5 Chemical, Radioactive or Biological
Hazard Precautions
Selection of the appropriate safety level and implementation of the
required safety measures for working with pH/ORP Arc sensor is
the sole responsibility of the user.
If working with hazardous liquids observe and carry out the maintenance procedures, paying particular attention to cleaning and
decontamination. If pH/ORP Arc sensor becomes contaminated
with biohazardous, radioactive or chemical material, it should
be cleaned. Failure to observe and carry out the maintenance
procedures may impair the reliability and correct functioning of
the measuring module.
ATTENTION! To avoid dr ying out the diaphragm
and a potential decrease in sensor performance,
make sure the sensor is always stored with a cap
containing Storage Solution (Ref 238931).
3.3 Earthing
The sensor has to be mounted at the mounting location with an
electrostatically conductive of < 1MOhm. It is recommended to
assign the VP 8 cable shield to earth (PE potential equalization)
especially in electromagnetically noisy environments. This significantly improves noise immunity and signal quality.
3.4 Electrical Safety Precautions
Do not connect the sensor to a power source of any voltage beyond the range stated in the power rating Technical Specifications
(www.hamiltoncompany.com).
Always use Hamilton VP 8 cables for safe connection. Cables are
available in a broad range of lengths (Chapter 10). Make sure the
cable is intact and properly plugged to avoid any short circuit.
Keep pH/ORP Arc sensor away from other equipment which
emits electromagnetic radio frequency fields, and minimize static
electricity in the immediate environment of the optical measuring
4 Product Description
4.1 General Description
pH/ORP Arc sensors are critical measurement and control parameters for many liquid processes. Hamilton offers a wide selection of sensors for use in all bioprocesses, as well as many other
industries that require high accuracy and reliability from their sensors. Hamilton is one of the few manufacturers to have multiple
pH membrane glass options and reference designs to tailor the
sensor for the specific application. With their micro transmitter,
pH/ORP Arc sensors enable direct communication to the process
control system via 4–20 mA standard signal or digital Modbus.
Wireless communication with the Arc Wireless Adapter may be
used for monitoring, configuration and calibration, and saves time
without compromising the quality of the wired connection. The
sensor features furthermore an integrated Bluetooth 4.0, enabling
in this way wireless data exchange with smartphones and tablets.
With the transmitter integrated, Arc sensors provide more reliable measurements directly to your process control system. The
μ-transmitter located in the sensor head stores all relevant sensor
data, including calibration and diagnostic information, simplifying calibration and maintenance. The integrated quality indicator
predicts the remaining sensor and cap life time.
Key benefits include:
• Multiple pH membrane glass options for different application
7Operating Instructions pH/ORP Arc Sensors
PRODUCT DESCRIPTIONINSTALLATION
• No separate transmitter needed
• Easy to install
• Direct digital Modbus or analog communication to the
process control system via 4–20 mA standard signal.
• Full online wireless option via Bluetooth 4.0 for easy
monitoring, configuration and calibration
4.2 Hardware Description
The pH/ORP sensor consists of a sensor head with integrated
electronic and a sensor pH sensitive glass membrane in contact
with the measured medium. The pH glass shaft is terminated by
the sensitive glass membrane and diaphragm with the reference
measurement system. During development, special attention was
paid to an optimum sanitary design. All materials in contact with
the solution meet the FDA requirement.
VP 8 Connector
4.3 pH/ORP Arc Sensor with
Micro-Transmitter inside
With the micro-transmitter integrated, pH/ORP Arc sensors offer
fully compensated signal directly to the process control system.
Communication protocols include standard analog 4–20 mA. The
micro transmitter located in the sensor head stores all relevant
sensor data, including calibration and diagnostic information,
simplifying calibration and maintenance.
5 Installation
5.1 Unpacking
1) Unpack carefully the pH or ORP Arc sensor. Enclosed you
will find the pH/ORPArc sensor, the Declaration of Quality, the
Instruction Manual, and Material certifications.
2) Inspect the sensor for shipping damages or missing parts.
Sensor Head with μ-transmitter
Process connection PG13,5
O-ring
Figure 2: pH/ORP Arc sensor deliver y package.
5.2 Configuring the pH/ORP Arc sensor
with ArcAir
Arc sensors require application specific configuration. Following
parts are required to configure and calibrate Arc sensors:
• Arc View Mobile or ArcAir computer Software Solution
• External Power supply with Arc USB Power Cable
(Ref 243490-xx)
To configure and set up the Arc sensors at least ArcAir Basic
is required. Below in this table you will find the different ArcAir
licenses and its functionality:
Sensitive Glas Membrane
Figure 1: Sensor description
ArcAir Read Calibrate Configure Documentation
Free
Basic
Advanced
– – –
–
9Operating Instructions pH/ORP Arc Sensors
INSTALLATIONINSTALLATION
Arc Wire less
Conver ter BT
ArcAir
Figure 3: Arc pH/ORP Sensor configuration with ArcAir.
Arc Wi 1G/2G
Adapter BT
Arc pH/ORP Sensor
Arc USB Power Cable
5.2.1 Installing ArcAir Basic on the Computer
1) Download the Zip file «ArcAir» from the Hamilton webpage
www.hamiltoncompany.com (search for ArcAir).
2) Unpack the ZIP-File.
3) Do not plug in the Wireless Converter before the installation of
ArcAir is completed.
4) Install «ArcAir» by double clicking «ArcAir.exe» and follow the
instructions on the screen.
5.2.2 Connecting a pH /ORP Arc sensor
to ArcAir
1) Connect a sensors with the power supply, e.g. Arc USB Power
Cable Ref 243490-xx
2) Switch on the mobile’s Bluetooth connection or connect a
Wireless Converter BT to USB Port of your computer (only for
wireless connection)
3) The ArcAir application recognizes and displays the connected
sensors automatically
NOTE: Initial operation of ArcAir is in the laboratory
mode as long as no user account is created. Laboratory
mode does not require a login password and enable all
features in the installed license version.
5.2.4 Configuring the pH/ORP Arc Sensor
Parameters
1) Start the ArcAir application
2) Select the desired sensor
3) Open the drawer «Settings» (make sure you have the «Sensor
Settings» user right)
4) Configure the sensor
A description of the available settings is given below:
ParameterDefaultNameDescription Value Configuration Location
Meas. Unit These are the pH Required Settings/measurement mVMeasurementphysical units
T unit These are the K Required Settings/temperature °FMeasurementphysical units °C
*Moving The sensor ORP/ average uses a moving Temp.: 2 default Valuesaverage over Rthe measuring
points
*In calibration mode the sensor will automatically switch to 3 sec sampling rate
after the first calibration.
Recommended
: 16 parameter Measurement
Glass
Settings/
ATTENTION! For automatic sensor login a unique
and global Operator Level S password for all intelligent sensors is required. Please make sure you have
added the same Operator Level S Password for all
Arc sensors in the ArcAir application under
Backstage/Settings/Operator Level S Password.
5.2.3 Create User Accounts
1) Start ArcAir application on computer
2) Click on «Backstage» left upper corner
3) Select «User Management»
4) Click the «Add» Button for opening the user editor
5) Type in the user details and password
6) Select the specific rights for the user
ATTENTION! First user is the administrator and all
user rights are assigned as default.
5.2.5 Configuring the calibration settings
ParameterDefaultNameDescription Value Configuration Location
Drift Higher drift will 1%/Min Recommend Calibration/pH/ORP interrupt the default Calibrationcalibration parameter Settingsprocess.
Warning
comes up
«drif t pH/ORP»
Drift T Higher drift will 0.5 K/min Recommend Calibration/interrupt the default Calibrationcalibration parameter Settingsprocess.
Warning
comes up «drift
temperature»
11Operating Instructions pH/ORP Arc Sensors
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