VisiTrace mA Sensors ™ Operating Instructions
TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents 1 General Information...................................................4 7 1.1 Intended Use.................................................................4 1.2 About this Operating Instruction....................................4 2 3 4 Safety Precautions and Hazards..............................5 General Description..................................................... 11 Hardware Description.................................................
General Information 1 General Information 1.1 Intended Use The VisiTrace mA sensors are intended for the measurement of dissolved oxygen (DO) in aqueous solutions in ppb range from 0 - 2000 ppb. The VisiTrace mA sensor is certified for use in explosive atmosphere. If these sensors are used in explosive atmospheres, the instructions in the chapter 3.3 must be followed.
Safety Precautions and Hazards Safety Precautions and Hazards 3.2 Operation of VisiTrace mA Sensor Cross sensitivities and resistances of ODO Cap L0 When using the VisiTrace mA sensors in process environment suitable protective clothing, safety glasses and protective gloves 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.
Safety Precautions and Hazards Safety Precautions and Hazards Hamilton recommends the following power supply units: Maximum input power Pi Process and Ambient Temperature range [Ta/p] 750 mW -20 °C < Ta/p < 115 °C T 135 °C If the sensor is electrically disconnected, the following temperature has to be observed for the process.
Safety Precautions and Hazards Product Description Option 2: Glass or plastic tank (not connected to earth) The glass or plastic tank has no connection to earth and therefore it is necessary to connect the sensor shaft via a screw clamp to earth. X ATTENTION! If the power supply (230VAC/24VDC) is switched off or disconnected the reading on the PCS is wrong. 3.
Product Description Installation • Full online wireless option via Bluetooth 5 for easy monitoring, configuration and calibration • Encrypted data exchange with mobiles (Android & iOS) 4.2 Hardware Description The VisiTrace mA sensor consists of a sensor head with integrated electronic and a sensor shaft in contact with the measured medium. The sensor shaft is terminated by the optical dissolved oxygen (ODO) cap, carrying the oxygen sensitive luminophore.
Installation Installation 4) Install «ArcAir» by double clicking «ArcAir.exe» and follow the instructions on the screen 5.2.2 Connecting the VisiTrace mA Sensor to ArcAir 1) Connect a sensor with the power supply, e.g.
Installation Installation A description of the available settings is given below: Parameter Name Description DO Unit T unit Default Value Configuration Location These are the ug/l ppb Required measurement physical units: %vol., %sat., ug/l ppb, mg/l ppm, mbar, ppm gas* Measurement/ Values These are the °C Required temperature physical units: K, °F, °C Measurement/ Values 5.2.
Installation Installation 5.2.7 Configuring the analog interface for your process control system Parameter Name Description Default Value 5.3 Install VisiTrace mA in your Measuring Loop 5.3.
Installation Installation A M12 PIN Function Color Description 3 HART/4-20 mA + Blue 2 HART/4-20 mA – White 4-20 mA two-wire interface, functions as a current sink. If there is no resistor in the HART Interface Card integrated, an external 250 Ω resistor is essential for HART communication.
Operation Maintenance 7 B Sensor PCS (Remote – I/O passive) 4–20 mA M12 Pin 3 4–20 mA M12 Pin 2 + 4–20 mA – 4–20 mA (GND) External Power Supply Maintenance Periodic maintenance routines need to be run in order to ensure safe and reliable operation and measurement of sensor and the accessories. ATTENTION! Avoid any contact of the equipment with corrosive media. 0 VDC; +24 VDC Figure 11: Two- wire loop wiring diagram for the 4-20 mA interface. A: with an active current input card.
Maintenance Maintenance 2) Exchange the O-ring 3) Screw firmly the new ODO Cap onto the sensor shaft again Material Purpose 4) Perform sensor calibration (Chapter 7.3) Arc Wireless Converter BT Enables wireless communication between sensor and a computer using ArcAir NOTE: If the ODO Cap is mounted very firmly on the shaft, and if you cannot obtain a good grip on the stainless steel with your fingers, a silicone tube between your fingers and metal may supply a better grip.
Maintenance Maintenance 7.3.3 Calibration of the Oxygen Point at 1%-vol. (c. 400 ppb at 25°C) 5) Enter the measurement tolerance (e.g. ± 0.1%-vol.) 6) Select the verification point: 1 %-vol. 7) Open the valve. Flow rate should not exceed 0.5 L/min.
Maintenance NOTE: The product calibration is possible for DO values in the range of 2 ppp to 2000 ppb. A product calibration is performed as follows: 1) Connect one of the VisiTrace mA sensor with the power supply, e.g. Sensor Power Cable M12 Ref 355288 (see figure 6) and install a Wireless Converter BT Ref 242333 2) Select the desired sensor from the sensor list 3) Go to «Process Settings» Troubleshooting 8 Troubleshooting 8.
Troubleshooting Disposal 8.3 Returning VisiTrace mA for Repair Warning Cause / Solution 4-20 mA current set-point not met The 4–20 mA interface is not able to regulate the current requested for the current measurement value according to your 4–20 mA interface configuration. Check the 4–20 mA wiring and supply voltage (Chapter 5.3.2) Sensor supply voltage too low Sensor supply voltage too high The sensor supply voltage is too low for the sensor to operate correctly.
Ordering Information Ordering Information NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Ordering Information Ordering Information 11.2 Parts and Accessories Ref Description 243530 ODO Cap L0 Wetted Materials Stainless steel 1.4435 Silicone FDA approved Application: For low ppb ranges in breweries and soft drink processing.
Ordering Information Ordering Information Overview of service offers Online service Technical support Initial Operation/Calibration Ref Product Name 10071111 Arc View Mobile Basic for none Ex environment Description: The pre-configured Arc View Mobile, Hamilton`s mobile solution for monitoring measurement values, calibrating Arc sensors and configuring various parameters with the unified user interface for pH, DO, Conductivity and ORP.
NOTES NOTES Operating Instructions VisiTrace™ mA Sensors 39
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