Photometric Innovations for Biotechnology Who are we? EnVision Instruments Photometric Systems –Cell Density (Model CDP) –Ultra-violet Absorption (Model.

Photometric Innovations for Biotechnology

Who are we?EnVision Instruments• Photometric Systems

– Cell Density (Model CDP)– Ultra-violet Absorption (Model UVS)– Turbidity

• Foundation Fieldbus/Bluetooth Interfaces• Advanced Optics Technologies• Biotech/Pharmaceutical/Food & Beverage Industries

User Interface Criteria


• Lab scale and manufacturing environments

• Compatible with existing and new equipment

• Small space requirements

• Keep development cost down

• Support requirements for HW and SW

• Ease-of-use

Bluetooth Wireless Interface• Low-power 2.4 - 2.5 GHz wireless communication (10 meter range)• Robust, readily available, inexpensive• Fewer connectors, cables and failure points• Interfaces to standard man/machine interfaces (Desktop PC, laptop,

PDA) - no external custom transmitter• Setup / configuration / monitoring only• Industry standard 4-20 mA output provided• Options:

– Serial cable replacement– Web browser– Other Bluetooth “profiles”?


Foundation Fieldbus InterfacePositives• Interoperable digital-only interface• Adopted by biotech industry• Two-wire interface with loop-power capability for low power devices• Intrinsically-safe capability• Availability of standard hardware and software• Distributed process automation and control• Fault tolerance• “Smart” devices and predictive maintenance


Foundation Fieldbus InterfaceOther issues• Standard user layer based on “blocks” like AI, AO, PID• High cost of implementation

– Software communications stack and function blocks– Specialized hardware– Fieldbus Foundation approval and registration– Needs large investment or third party assistance

• Relatively slow data updates rates for some instruments• H1 and HSE devices

– H1 is 31.25 kbit– HSE is 10 Mb ethernet


Our CDP Implementation• Configuration via Bluetooth or Fieldbus

– Separation of UI hardware and software– Internal modified Modbus interface

• Foundation Fieldbus H1 device with two AI blocks– Bus/Loop powered (45 mA rating)

• Bluetooth Wireless Web Server Interface– Uses a standard PC or PDA browser such as Internet

Explorer or Mozilla

• Security and User Level Support• 250 ms update rate over FF and 4-20 output




UVS “PurSpec” Analyzer

• In-Line UV Spectrophotometer• Larger data requirements• Same UI architecture





Photometric Innovations for Biotechnology Who are we? EnVision Instruments Photometric Systems –Cell Density (Model CDP) –Ultra-violet Absorption (Model.

Documents

biotechnology slide

output photometric innovations

wire interface

standard pc

industry standard

biotechnology lab scale

hse devices h1

low power devices