background image

From lab to production, 

providing a window into the process 

-13-

www.dynisco.com

Rev: 1217

P/N: 974124

ECO: 27882

6.1 Mounting the Pressure Transmitter

6.2 Electrical Connection

Mounting and electrical connection of the PT must be done by specialists 

with EMC training, following all applicable regulations, and in 

pressureless, voltage-free, intrinsically safe

 condition with the 

machine 

switched off.

The machine must be secured against being switched back on!

ESD sensitive component. Electrostatic discharge may damage the PT. 

Take ESD

precautions.

Before mounting the PT, check the process connection carefully.

Before mounting the PT, ensure that the process connection is free from 

media.

To prevent the PT from sticking permanently in the process connection, 

coat the thread

section of the transmitter with high temperature resistant grease or a 

suitable parting

agent.

Always use a torque wrench when screwing the PT in and out. Do not 

apply the tool to

the housing or housing / electrical connection!

• Screw the PT into the process connection and tighten.

Mounting and electrical connection of the PT must be done by specialists 

with EMC training, following all applicable regulations, and in 

pressureless, voltage-free,

 condition with the 

machine switched off.

The machine must be secured against being switched back on!

Содержание PT303

Страница 1: ...ing a window into the process 1 www dynisco com Rev 1217 P N 974124 ECO 27882 PT303 Strain Gage Pressure Transmitter Operating Manual Explosion proof pressure transmitter with integrated amplifier for use in hazardous environmeents ...

Страница 2: ... into the process 2 www dynisco com Rev 1217 P N 974124 ECO 27882 Table of Contents Content Page Icon General Notes on safety Technical data Function Transport delivery Assembly Commissioning Maintenance Troubleshooting 3 5 6 11 11 12 14 16 17 ...

Страница 3: ...imes The content of this manual must be read understood and followed in all points by all relevant people This applies in particular to the notes on safety Following the safety instructions will help to prevent accidents defects and malfunctions DYNISCO will not be held liable for any injury loss or damage resulting from failure to follow the instructions in this manual If malfunctions occur in sp...

Страница 4: ...is manual may not be forwarded to third parties 1 3 Explanation of icons The manual uses icons to indicate information pertaining to safety Risk of destruction or damage to equipment machines or installations General danger to life or limb Specific danger to life or limb You MUST do this The safety instructions are provided again in the individual chapters of the manual 1 4 Abbreviations The follo...

Страница 5: ...er overall system e g a machine is responsible for following the safety and accident prevention regulations that apply to the specific application 2 Notes on safety The operator or owner of the larger overall system is responsible for following the safety and accident prevention regulations that apply to the specific application Mounting and electrical connection of the PT must be done by speciali...

Страница 6: ... 0 5 Vdcoutput Do not lay connecting cables in the direct vicinity of cables carrying higher voltage or used to switch inductive or capacitive loads 3 Technical Data 3 1 Ordering guide 3 1 1 Ordering guide for PT303 3 2 Ordering example 3 3 Safety related specifications 3 4 Performance characteristics 3 4 1 Accuracy 3 5 Wiring Electrical Termination 3 6 Pressure ranges 3 6 1 Max Overload 3 6 2 Nat...

Страница 7: ...217 P N 974124 ECO 27882 3 1 1 Ordering guide for pt303 3 2 Example for Ordering 3 3 Safety Related Specifications 3 4 Performance Characteristics 3 4 1 Accuracy FM approvals Class I Division 1 Groups A B C D PT303 X 0 25 of full scale Including Linearity hysterisis and repeatability ...

Страница 8: ...P N 974124 ECO 27882 3 5 Wiring Electrical Termination The electrical termination of the PT303 is 72 of four conductor sheilded cable 22 AWG conductors with 1 2 14 NPT conduit fitting Color Function Red Signal Black Signal White Excitation Green Excitation Fig 3 1 Typical Wiring Diagram ...

Страница 9: ... 400 A PT303 5C 0 500 A PT303 7 5C 0 750 A PT303 1M 0 1 000 A PT303 1 5M 0 1 500 A PT303 2M 0 2 000 A PT303 2 5M 0 2 500 A PT303 3M 0 3 000 A PT303 5M 0 5 000 A PT303 7 5M 0 7 500 A PT303 10M 0 10 000 3 6 1 Max Overload Without influencing Operation Data 3 6 2 Frequency Response 3 7 Electrical Data 3 8 Weight PT303 2x rated pressure 2000 Hz 3 5 pounds Configuration 4 arm Wheatstone bridge strain g...

Страница 10: ...From lab to production providing a window into the process 10 www dynisco com Rev 1217 P N 974124 ECO 27882 3 9 Dimensions Fig 3 2 PT303 Mechanical Drawing ...

Страница 11: ...s an electrical signal that is proportional to the pressure of the media The pressure is applied by the medium on the measuring diaphragm The deflection of the measuring diaphragm changes the resistance of the strain gauge bonded to the measuring diaphragm The strain gauge is a Wheatstone bridge Depending on the model the integrated amplifier generates an electrical signal Vdc proportional to the ...

Страница 12: ...Storage Store the PT in original packaging only Protect against dust and moisture 5 3 Scope of delivery Pressure Transmitter Calibratoin Sheet Operating manual with declaration of conformity 6 Assembly 6 1 Mounting the Pressure Transmitter 6 2 Electrical connection 6 3 Connection assignments 13 13 14 Ambient temperature for the electronics housing max 170 F Higher temperatures can result in damage...

Страница 13: ...nting the PT check the process connection carefully Before mounting the PT ensure that the process connection is free from media To prevent the PT from sticking permanently in the process connection coat the thread section of the transmitter with high temperature resistant grease or a suitable parting agent Always use a torque wrench when screwing the PT in and out Do not apply the tool to the hou...

Страница 14: ...ents 7 Commissioning 7 1 Supply Voltage Conduit Leads Red Signal Black Signal White Excitation Green Excitation 7 1 Supply voltage 7 2 Calibration 7 3 Zero adjustment 7 4 Operation Please read the entire manual prior to installation and use Maximum excitation is 28 Vdc Rated excitation is 12 Vdc Recommended warmup is 15 minutes Explosion hazard Deviation of the supply voltage from the value given ...

Страница 15: ...able instrument to the signal output to verify the settings Adjust zero at potentiometer adjusting zero screw and verify on meter For PT303 adjust zero at operating temperature Wait until a steady operating temperature is reached at the pressure sensor Adjust zero at potentiometer adjusting zero screw and verify on the meter Replace the cover screws on the potentiometers Operating temperature at t...

Страница 16: ...tched back on Burn hazard The PT can be very hot when removed Wear protective gloves ESD sensitive component Electrostatic discharge may damage the PT Take ESD precautions Always remove the PT before cleaning the machine with abrasives or steel wire brushes or suchlike Removing the transmitter if the medium is in solidified condition can damage the diaphragm of the PT Do not clean the screw in sec...

Страница 17: ...ft cloth while the medium is still malleable 8 2 Repair Disposal Please send defective PTs to your DYNISCO representative For addresses see the back cover of the operating manual 8 3 Warranty This DYNISCO product is warranted under terms and conditions set forth in the DYNISCO web pages Go to www dynisco com and click warranty at the bottom of any page for complete details 9 Troubleshooting ...

Страница 18: ...970 Fax 49 7131 23260 Email DyniscoEurope dynisco com Dynisco Instruments S a r l 466 rue du Marché Rollay 94500 Champigny sur Marne France Tel 33 1 4881 8459 Fax 33 1 4881 8334 Email DyniscoFrance dynisco com Dynisco s r l Via Adriatico 2 2 20162 Milano Italia Tel 39 02 661 01733 Fax 39 02 661 02908 Email DyniscoItaly dynisco com Dynisco UK Ltd Silver Birches Business Park Aston Road Bromsgrove W...

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