1. The CT76 Solutions Package: Patrick Lowery, CPAC Fall Meeting
Latest Advances in Sample System Low Flow Instrumentation and IS Digital Bus Technology
Patrick Lowery, CPAC Fall Meeting
10/8/2007

2. “Today” Non-safe 120V in 9 volt Explosion Proof and IS Power Supply
IS Power 9.5V out
Common digital bus and power line to GC
Digital Pilot Valves
Digital temp probe
Multi-variable flow/pressure meters
Communication to the Analyzer

3. “2008” IS CAN Bus Multi-variable flow/pressure/temp meters/controllers
IS communication gateways and controllers (i.e. SAM)
CAN Bus pilot valves and sensors
Communication to smart analyzer or to analyzer network/ DCS / PLC

4. Technology Roadmap TODAY (Gen 2) NeSSI™ Roadmap
End of 2007 (full IS and Control Solutions available)
TODAY (Gen 2)
End of 2006
( “Gen 1.5”, analog and
mechanical)
Initiative “Gen 1.0”, started 1999
NeSSI™ is a trademark of the Center for Process Analytical Chemistry, University of Washington

5. Status
CIRCOR Tech built working Siemens I2C devices and delivered to the field in early 2007
CIRCOR participated in the CAN in Automation (CiA103 working group to help finalize draft document in early 2007
CIRCOR moved forward with several iterations of IS and non-incendive technology

6. Component Solutions

7. Multivariable Devices
Multi-Variable Flow Meter
Upstream and Downstream Pressures
Flow rate
Fluid Temperature
Closed-loop Control
All Intrinsically Safe (IS) except for Modbus version
Contains device description in memory
Digitally re-scale of ranges
Field rescale of orifice pack
Integrated pressure relief valve
1.5” x 3” x 4” (WxLxH) size
IP65, NEMA 4X package

8. Flow Meter Features Different connectors and status indicating LED’s
IP rated SS enclosure
Digital Address ID
IS Circuitry in mother daughter board arrangement for different sensor interfaces and different connector types
New multi-variable pressure, differential pressure, and temperature combo sensor (co-developed with Ametek using their MEMS Technology)
Anti-clogging flow restriction with integral relief valve

9. Flow Meter Three bus versions are (or will be) available
IS CAN Bus
Siemens I2C Maxum GC bus
Modbus/RS485
Principle operates on measuring DP-P-T across a flow restriction, using new multi-variable MEMS sensing technology
Focusing on repeatability and reliability applications over pure accuracy applications
Closed-loop version will be available with a “combi-valve” using proportional air signal for IS considerations

10. Flow Meter COO

11. Future Flow Meter
Using the same sensor and circuitry, we can now use a particle filter as the flow restriction element. With intelligent sub-routines, the device can self-calibrate.
The device can monitor the status of the filter over time and tell the operator or a computer when the filter is clogged to a critical point.

12. Valve Solutions Ultra Low powered solenoid valve manifolds
Intrinsically safe
Multiples of six per bus node to save on cabling cost
Up to 85 deg C
Can go inside the sample cabinet
IP65 protection
Less 0.1watts per valve (maximize power budget)

13. System Solutions

14. Bus Descriptions Modbus Devices: Based on an RS-485 physical layer
Communication protocol invented by Modicon (PLC manufacturer)
Widely used in automation products and integrated with almost all PLCs
Typically used in Class 1, Div2 (zone 2) applications but can be used in Class 1 Div 1 with IS certified devices and IS isolator repeater/barriers
Limited to 1-2 devices per Isolator/Repeater due to power consumption (i.e. 24V technology)
Siemens Maxum I2C: Based on proprietary physical layer
Used inside of Siemens Applied Automation Inc. (SAAI) process GC for years
Robust and simple, Plug-and-Play
Can only be used with Siemens hardware (configured to Siemens specifications)
CAN bus Devices: based on CiA103 physical layer standard
CT76 iCAN™: CIRCOR Application Layer Protocol based on “Modbus emulation” and IEEE Electronic Data Sheet description using CiA103 physical layer and core Bosch CAN 2.0 data link layer (ISO )
CANopen: A open standard application layer (EN , CiA DS301) (more device resources needed, but available today)

15. Standard Symbol w/Object Fields “TEDS” Device Description
Next Steps for Bus
Standard Symbol w/Object Fields
“TEDS” Device Description
XML metadata
CANbus
SAM
Ethernet

16. (Control Master is the Process Analyzer)
What’s Next
“Embedded SAM”
Sensor
Actuator
Manager
(Control Master is the Process Analyzer)

17. Gateway-repeater Progress towards SAM Being Developed by CIRCOR
Pepper & Fuchs
Gateway-repeater
Example of IS CAN Bus Network (courtesy of CiA IS CAN Bus working group
Being developed
By CIRCOR
Being Developed by CIRCOR
Being developed
By CIRCOR

18. Summary
Circor has submitted hazardous area certification files to IEC-US-Canada and ATEX for IS Can bus and Modbus devices (valves, sensors, multi-variable flow, flow and pressure control)
Simple Gateways allow for connectivity to any architecture (Ethernet, PLC, SAM, data loggers, etc)
Next steps include driving TEDs for CANopen, SAM (application interface??), and derivations of core technology available today