ASTI - Model HiQDT - Smart Digital Modbus Measurement System
From ASTI Transmitters
The HiQDT smart digital sensors have integral industry standard RS-485 MODBUS RTU communications allowing them to be connected directly with a very wide array of devices thus ushering in a new era in industrial field measurement where the brand of data acquisition and control device is altogether decoupled from the manufacturer of the smart digital sensor giving true freedom of choice back to the customer to select their preferred vendors for each aspect of the continuous liquid analytical electrochemical analysis without any artificial restrictions.
The HiQDT product line is designed to allow for se...
The HiQDT product line is designed to allow for seamless integration with either customer supplied PLC & HMI or else available as turn-key plug and play packages from the ASTI factory ready for commissioning right out of the box. Systems are available for continuous inline measurement and control in hazardous or safe locations employing rugged LED or advanced touchscreen interfaces. The same HiQDT smart digital RS485 MODBSU RTU sensor used for continuous measurements can also be employed for intermittent measurements when used with an ultralow power battery or solar datalogger to record measurements and then wirelessly transmit this data from remote site locations. ASTI Windows setup and calibration software for HiQDT smart RTU sensors allows for adjustment of all user accessible parameters as desired and is provided free of charge. The battery-powered handheld communicator provides a very simple method for plug and play calibration and setup of various adjustable parameters in the field or in the workshop. Since all calibration and configuration information is integral to the sensor this allows for plug and play hot-swap use between any mating device that has been properly configured without any special user action required in the field.
Introduction to Novel Smart Digital HiQDT Measurement Platform
The HiQDT product line is an altogether novel approach on how to measure, analyze, control and datalog pH & ORP measured parameters for industrial processes automation, discharge compliance and environmental monitoring applications entering in the Industrial Internet of Things (IIoT) age.
Core Structure of HiQDT RS485 MODBUS RTU Smart Digital Sensors Installed into Field Service
RS485 MODBUS RTU MASTERS:
NOTE: HiQDT sensors are RS485 MODBUS RTU slaves. Only ONE of the RS485 MODBUS RTU masters detailed below can be connected at any one moment time. See installation guides for details and additional information.
- Programmable Logic Controller (PLC)
- Human Machine Interface (HMI) can be either local or else available via remote access o All PLC & HMI functionality shown above is included ASTI touchscreen controllers
- PLC & HMI can be either customer supplied or ASTI provided as desired.
- Windows Software for Setup, Configuration & Calibration of HiQDT sensors
- Search & Assign node address & baudrate (HHC can also search & assign node address)
- Optional for configuration & calibration if these features are not implemented in HMI+PLC
- Windows Datalogging & Graphing software to record pH, ORP, temperature and raw mV
values for setup of modbus network & commissioning plus pilot & research applications - Handheld Communicator (HHC) for use with pH/ORP Sensors or Dissolved Oxygen (D.O.) Sensors
- 9V battery powered operation with simple easy to use 4 button operation with bright LED
- Ready for plug & play use right out of the box with zero configuration required
Industrial Internet of Things (IIoT)
The core difference of the HiQDT smart digital sensors is that all user functionality is accessible via the open standard and royalty free RS-485 MODBUS RTU protocol. This is in contrast to the now antiquated sensors and transmitters that only provide a 0-20mA or 4-20mA current loop or 0-5 or 0-10 VDC voltage output containing no diagnostic information whatsoever. The modern HiQDT smart digital sensors take advantage of the industrial internet of things (IIoT) where remote access to all information is available from the sensor in realtime allowing for advanced predictive maintenance and support including remote calibrations and troubleshooting. HiQDT smart digital sensors create an open and collaborative environment for process automation and liquid analytical monitoring enabling a level of connectivity and integration that is not possible with closed architectures such as HART, Profibus, Fieldbus and other proprietary platforms that force vendor lock-in to the client.
Detailed complete documentation is available for the HiQDT smart digital sensors to allow access to all of the user adjustable configuration parameters, analytic data & calibration functions and values as well as sending the engineered temperature compensated process pH & ORP values in very high resolution. Analytics allow for predictive analytics to schedule maintenance in a proactive manner as well as robust monitoring of the process no matter the control system that is currently employed at the given facility. This HiQDT platform gives customers the freedom to interface these sensors with any PLC of their choice so long as it can act as a RS-485 MODBUS RTU master. Support for RS-485 MODBUS RTU master mode on PLC now is very common, if not altogether standard, even for entry level PLC, many of which are also now available with cost-effective remote ethernet access options.
1MF-3EA-HiQ4FP-HiQDT-4EA-SCG-PS12 Triple Input Bri...
1MF-3EA-HiQ4FP-HiQDT-4EA-SCG-PS12 Triple Input Bridge Box with integral 12VDC power supply to energize sensors for 85 to 265 VAC line powered operation with PNCE 6331-6631-HiQDT-WPC Slurry, Sulfide & Extreme Dehydration Resistant Submersible RS-485 MODBUS RTU Smart pH Sensor with waterproofing style “C” sealing option on left and PN 6353-HiQDT-STUB Immersion Slurry Resistant “STUBBY” style back-end cable assembly shown on the right. All connectors are NEMA 6P rated waterproof with bridge box NEMA 4X rated ready for field installation. White & green leads on left are modbus network in while white & green leads on right are out to modbus network.
Significance of HiQDT Platform in the Field
The major paradigm shift of the HiQDT smart digital MODBUS sensors and the Industrial Internet of Things (IIoT) means that not only process values can be viewed remotely but ALL functionality that is possible locally standing in front of the HiQDT controller can be accomplished remotely with robust security and administration for access control. That means no more trips out in to the field to assist clients with commissioning or troubleshooting for any issue that is simply a matter of configuring software or controller options. All of these types of changes can be made remotely with the HiQDT platform building upon the power of the Industrial Internet of Things (IIoT) and the accessibility through wired and wireless networks both from a Windows PC as well as cellular connected iOS and Android smartphones and tablets. The ability to send email notifications upon user configurable trigger conditions such as max or min process values and temperatures, max days in service since calibration or relay being energized allows for proactive site support & maintenance.
Installation Schemes DIY to Turn-Key Plug & Play
It is not necessary to be a PLC programmer to use the HiQDT smart digital MODBUS sensors. The HiQDT product platform includes a complete set of tightly integrated mating controllers and process equipment to interface the HiQDT sensors with robust factory support to provide completely turn- key field ready plug and play packages. The packages include integral scalable analog outputs, configurable MODBUS RTU and TCP slave digital communications, programmable contact relays, datalogging and full remote access capabilities for all functionality that is possible locally. Although all functionality can be achieved programming your own PLC, the convenience of factory supplied and supported controllers for smaller projects or fast delivery situations might still be very desirable. Factory supplied HiQDT touchscreen controllers include autobuffer calibration with temperature correction for pH buffers to ensure accurate results no matter the operator at the site. Plug and play packages available for hazardous areas requiring Class I, Division II approval as well as for even the most stringent Class I, Division I explosion-proof rated areas with severe & aggressive environments.
Windows software for configuration and calibration of smart digital MODBUS RTU sensors performs the tasks detailed below.Tasks in boldare ONLY performed by Windows software while all other tasks can also be done by handheld communicator (HHC).
- ACTIVE TASKS
- Perform offset and slope calibrations
- Create Calibration Certificate
- Set dampener smoothing (time averaging)
- Set Node Address &Set Baud Rate
- Set Temperature Compensation Coefficient (pH)
- Set Air Pressure and Salinity (Dissolved Oxygen)
- VIEW ONLY TASKS
- Total time in Field Use
- Time since Calibration(s) Last Performed
- Absolute Raw mV Input
- Min and Max Temperature in Field Use
- Sensor Item Number & Serial Number
- Year and Month of Manufacture
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