Foxboro PST Positioner

Foxboro  PST Positioner 

Partial Stroke Testing with SRD991 and SRD960 LCP960 Local Control Panel for PST monitoring

Final control elements in ESD applications such as ON/OFF-, Blow Down- and Venting-Valves remain in one position over a longer time without any mechanical movement. These valves can show the tendency to get stuck and in result might not operate upon demand. This can have a severe impact to the functionality of a Safety System and in result to the operating personnel, plant equipment and the environment. The Partial Stroke Test (PST) offers operators a tool to identify the trouble proof function of such ESD valves. The test can be easily executed via the FDT-DTM based configuration and  diagnostic tool ValCare™ and Valve Monitor.
For complete specifications, refer to technical document TI EVE0105 PST.
PST made with intelligent positioners SRD991 for Intrinsically Safe application or SRD960 for Explosion Proof application with specific functionality of PST.
• Supply 24VDC or 4-20mA
• Communication protocols HART, PROFIBUS PA, 
FOUNDATION Fieldbus H1
• Additional binary inputs and outputs for request from 
SIS logic solver and feedback status
• FDT-DTM software for configuration and advanced 
diagnostics (see page 7-10)

Foxboro  PST Positioner 

Partial Stroke Testing with SRD991 and SRD960 LCP960 Local Control Panel for PST monitoring

Benefits
g Partial Stroke Test (PST) function
g Manual or automatic activation of test
g Freely definable stroke ranges
g On-Line Testing and Diagnosis
g PST Signature by mean of SRD’s DTM
g Status- and diagnostic messages displayed on multilingual graphical LCD
g Maintenance alarm in the event of a stuck valve
g Break Pressure trend and Re-inflate time trend for predictive maintenance
g Positioner suitable for use in SIL applications
g Diagnosis date stored in positioner memory
g Positioners can be mounted onto all actuators
g Safety up to SIL 3
g SOV Monitoring with pressure dip detection
g FST (Full Stroke Test) monitoring with trigger capabilities

Foxboro  PST Positioner 

Partial Stroke Testing with SRD991 and SRD960 LCP960 Local Control Panel for PST monitoring

High Safety of the PST
• Maximum Wait Time (Seconds)
• Minimum Pressure (bar) — Minimum pressure between 0 to 6 bars
• Soft PST (Seconds) — Ramp freely configurable up to l00s
• SIL (Safety Integrity Level) — SRD991 ad SRD 960 are suitable for use in a safety related application up to SIL 3 according to IEC 61511-1. Certificate released by Exida
• Configuration Fail Open or Fail CloseEnvironment Integration
• Full integration into I/A Series system (FBM214 for HART communication) and Avantis CM
• Full integration into any other DCS that supports FDTDTM standard
• Full integration with Triconex SIS logic solver (Tricon and Trident)
• Full integration with any other SIS logic solver
• Full integration with a HART multiplexer and DCS or stand-alone PC network
• SR991 and SRD960 can be mounted easily onto any ESD (Emergency Shut Down) or ESV (Emergency Shut Vent) valves. Both offer a wide range of mounting kits.LCP96O Local Control Panel for PST activation and monitoring
• One push button for PST launch
• Backlighted LCD for a better reading in any weather condition
• LCP96O with Explosion Proof certification.
• Can be mounted directly on the near on the Safety valve in the Explosion Proof area.
• Timer to visualized when was done last PST

Foxboro  PST Positioner 

Partial Stroke Testing with SRD991 and SRD960 LCP960 Local Control Panel for PST monitoring

SRD960	SRD960 Intelligent Positioner with HART, PROFIBUS PA or FOUNDATION Fieldbus H1 for EEx d Explosion-proof Application
SRD991	SRD991 Intelligent Positioner with HART, PROFIBUS PA or FOUNDATION Fieldbus H1 for EEx ia Intrinsically Safe Applications
DTM	SRD991 and SRD96O DTM (Valve Monitor) for configuration and diagnostics. Valve Health Report generator
PST	Partial Stroke Testing with SRD991 and SRD960 LCP960 Local Control Panel for PST monitoring
SRI990	SRI990 Analog Positioner
SRI986	SRI986 Electro-Pneumatic Positioner
SRI983	SRI983 Electro-Pneumatic Positioner — explosion proof or EEx d version
SRP981	SRP981 Pneumatic Positioner
SMI983	SMI983 Electrical Position Transmitter
SMP981	SMP981 Pneumatic Position Transmitter
SGE985	SGE985 Inductive Limit Switch
FRS	FRS Filters Regulators
IP24	IP24 IP Transducer for Field Service

Foxboro  PST Positioner 

Partial Stroke Testing with SRD991 and SRD960 LCP960 Local Control Panel for PST monitoring

If you have any interest, pls feel free to contact me as below
Jackie Ma
HONGKONG XIEYUAN TECH CO., LIMITED
Add:7-A16,Caishen Commercial Plaza,Hangkou Railway Station,Wuhan, China
M:86-15717178751(WhatsApp & Telegram) | T:+86-27-85887732 | F:86-27-85309780 
Email:Jackie@hkxytech.com