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PC3 Series Pressure Controllers

:

The PC3 Series pressure controller is designed to change the flow to allow the control of pressure at

some point away from the body of the controller. This is most helpful when it is necessary to mount

pneumatic components such as valves, fittings or flow meters that introduce significant pressure drop

between pressure controller body and the point where pressure control is necessary. To accomplish
this, the PC3 has an external sensing port to which the pressure at the location where pressure is to be
controlled is piped back to the pressure sensor in the controller.

PC3 Series Pressure Controller

Flow Meter (Pressure Drop)

Nozzle Under Test

Figure 16. Typical PC3 Application Diagram

P1

P2

P3

P3

P3

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Содержание 16 Series

Страница 1: ...PCR Series PC Series PCD Series P Series 16 Series Digital Pressure and Vacuum Gauges and Controllers Operating Manual PCD Series PC3 Series ...

Страница 2: ...he user to determine the suitability of any product to their application The manufacturer does not warrant or assume responsibility for the use of its products in life support applications or systems Warranty This product is warranted to the original purchaser for a period of one year from the date of purchase to be free of defects in material or workmanship Under this warranty the product will be...

Страница 3: ...peration 11 Main Mode 11 Tare 11 Flashing Error Message 12 Select Menu Mode 12 Communication Select Mode 13 Unit ID 13 Baud 13 Data Rate 13 Manufacturer Data Mode 14 Miscellaneous Mode 14 LCD Contrast 15 Display Zero Deadband 15 Pressure Averaging 15 Flow Averaging 15 PC PCR and PCD Series Pressure Controller Operation 16 Main Mode 16 Line Pressure 16 Set Pt 16 Flashing Error Message 16 Select Men...

Страница 4: ...le 41 Table of Figures Figure 1 8 Pin Mini DIN Connector 7 Figure 2 Simple Method for Providing Set Point to Controllers 8 Figure 3 Mini DIN to DB 9 Connection for RS 232 Signals 9 Figure 4 Typical Multiple Device Addressable Wiring Configuration 10 Figure 5 Optional Industrial Connector 10 Figure 6 Main Mode Display P Series Pressure Gauge 11 Figure 7 Proper Set Up for Remote Tare on Meters 12 Fi...

Страница 5: ...let port connections No straight runs of pipe are required upstream or downstream of the gauge The inlet and outlet ports are equal in size and symmetric in line The port sizes process connections and mechanical dimensions for different pressure ranges are shown on pages 30 31 Pressure Gauges are shipped with a plug for static pressure measurement This plug may be removed for flow through operatio...

Страница 6: ... gas will be limited to roughly 0 5 LPM of water like fluid The PCR will be limited to roughly 30 LPM of water like fluid 2 The factory PID tune is established using air flow It may be necessary to adjust the PID tuning parameters if you will be using a controller with liquids Special Configurations P PC and PCR Series pressure devices are occasionally ordered with special configurations which are...

Страница 7: ...g Output 4 20mA 5Vdc 10Vdc or Basic Alarm Brown 3 RS 232 Input Signal Red 4 Analog Input Signal Remote Tare Gauges see Figure 7 Set Point In Controllers see Figure 2 Orange 5 RS 232 Output Signal Yellow 6 0 5 Vdc or 0 10 Vdc Output Signal Green 7 Power In as descibed above Blue 8 Ground common for power communications and signals Purple Note The above pin out is applicable to all pressure gauges a...

Страница 8: ...ial port as shown in Figure 3 Adapter cables are available from Cole Parmer see Accessories page 41 or they can be constructed in the field with parts from an electronics supply house In Figure 3 note that the diagrams represent the port side of the connections i e the connector on top of the gauge and the physical DB 9 serial port on the back of the computer The cable ends will be mirror images o...

Страница 9: ...troller was ordered with a 4 20 mA current output signal it will be available on Pin 1 See the Calibration Data Sheet that shipped with your device to determine which output signals were ordered The current signal is 4 mA at 0 pressure and 20 mA at the gauge s full scale pressure The output current is linear over the entire range Ground for this signal is common on Pin 8 Current output units requi...

Страница 10: ...ial connector is also available 1 6 5 4 3 2 Pin Function Cable Color 1 Power In Red 2 RS 232 Output Blue 3 RS 232 Input Signal White 4 Remote Tare Ground to Tare Green 5 Ground common for power communications and signals Black 6 Signal Out Voltage or Current as ordered Brown Figure 5 Optional Industrial Connector Note The above pin out is applicable to all the pressure gauges and controllers order...

Страница 11: ... Pressure Gauge The MODE button in the lower right hand corner toggles the display between modes Tare P Series gauges which reference atmospheric pressure as zero gauge pressure devices have a tare button Pushing the dynamically labeled Tare button in the upper right hand corner tares the pressure gauge and provides it with a reference point for zero pressure This is a very simple but important st...

Страница 12: ...evice When any item flashes on the display the pressure measurement is not accurate Reducing the pressure to within specified limits will return the unit to normal operation and accuracy Select Menu Mode Pushing Mode once will bring up the Select Menu display Push the button nearest your selection to go to the corresponding screen Push Mode again to return to the Main Mode display Misc SELECT MENU...

Страница 13: ...ata is passed back and forth between the instrument and the computer Both devices must send receive at the same baud rate in order for the devices to communicate via RS 232 The default baud rate for these devices is 19200 baud sometimes referred to as 19 2K baud To change the baud rate in the Communication Select Mode press the Select button in the upper left corner of the display until the cursor...

Страница 14: ... 549 7676 Mfg 1 Main Model P 10PSIG D Serial No 27117 Date Mfg 11 07 2007 Calibrated By DL Software GP07R23 Mfg 2 Figure 10 Manufacturer Data Displays Miscellaneous Mode The Miscellaneous mode is accessed by pressing the button above the Misc label in the upper right hand corner of the Select Menu display The screen will appear as shown in Figure 11 Push the button above Select to move the cursor ...

Страница 15: ...ameters to which the deadband applies Note Only the Pressure parameter is applicable to and adjustable in pressure devices To adjust the display zero deadband press the Select button in the upper left hand corner of the display until the cursor arrow is in front of the words PVM DBand X F S Then using the UP and DOWN buttons at the bottom of the display change the display zero deadband value as de...

Страница 16: ...Series Pressure Controller The MODE button in the lower right hand corner toggles the display between the Main Display and the Select Menu Display Line Pressure Pressing the dynamically labeled PSIG button located in the upper left corner of the display will move the line gauge pressure to the primary display Set Pt The set point is shown in the upper right corner of the display The set point cann...

Страница 17: ...higher speed adjustment or pressed repeatedly for fine adjustment If your controller is difficult to reach or you prefer dial up set point adjustment please consider our Local Set point Module LSPM described on page 39 Select Loop Input P 400 Press Analog D 5000 Serial AUT0off Local Set 0 00 Control Up Down Setup Figure 14 PC Series Control Setup Display Input PC Series Pressure Controllers normal...

Страница 18: ...t is good practice to write down the initial value so that it can be returned to the factory settings if necessary D refers to the Differential term of the PID loop Before changing this parameter it is good practice to write down the initial value so that it can be returned to the factory settings if necessary Set refers to the Set point This parameter may only be changed if Local is selected as t...

Страница 19: ...Back Pressure Control Application Downstream Valve DS Specify DS in part number adder code Mechanical Pressure Regulator Mechanical Pressure Regulator Vent Flow FLOW Alicat Precision Pressure Controller Process Process Flow Exiting Bleed Port Figure 15 Upstream and Downstream Valve Diagram ...

Страница 20: ...alves fittings or flow meters that introduce significant pressure drop between pressure controller body and the point where pressure control is necessary To accomplish this the PC3 has an external sensing port to which the pressure at the location where pressure is to be controlled is piped back to the pressure sensor in the controller PC3 Series Pressure Controller Flow Meter Pressure Drop Nozzle...

Страница 21: ...ight port Figure 17 Differential Pressure Gauge Differential Pressure Controllers The differential pressure controller is designed to change the flow to allow the control of a pressure ratio between two points in the line There are a variety of applications for this device One of the most common is to control the difference in pressure across some sort of element that changes resistance to flow ov...

Страница 22: ...ers to raise and lower the pressure of a closed system within the operating range of the controller without wasting gas under constant pressure conditions Plumbing Connect your PCD into your process via the 1 8 NPT port on the front of the unit This is the Process port Connect a supply pressure greater than the full scale pressure control range of the device not to exceed 145 PSIG to the inlet 1 8...

Страница 23: ...e and necessary when using more than one unit on a single RS 232 line to be able to poll the unit In Polling Mode the unit measures the pressure normally but only sends a line of data when it is polled Each unit can be given its own unique identifier or address Unless otherwise specified each unit is shipped with a default address of capital A Other valid addresses are B thru Z Once you have estab...

Страница 24: ...e Address P Enter e g B P Enter Sending a Set point via RS 232 PC Series only To send a set point via RS 232 Serial must be selected under the Input list in the control set up mode To give controllers a set point or change an existing point simply type in a number between 0 and 65535 2 over range where 64000 denotes full scale pressure and hit Enter The set point column and pressure rates should c...

Страница 25: ...ll respond by reading the current value for register 22 between 0 65535 It is good practice to write this value down so you can return to the factory settings if necessary Enter the value you wish to try by writing the new value to register 22 For example if you wished to try a D term of 25 you would type W22 25 followed by Enter where the bold number denotes the new value The computer will respon...

Страница 26: ...ppear Make sure that Fixed Width is selected under Original Data Type in the first dialog box and click Next In the second dialog box set the column widths as desired but the default is usually acceptable Click on Next again In the third dialog box make sure the column data format is set to General and click Finish This separates the data into columns for manipulation and removes symbols such as t...

Страница 27: ...ersion box will appear In the End Lines With drop down box select CR Only Everything else can be left as default 7 Click O K 8 You have now created a script file to send to HyperTerminal Close the file and exit the text editing program 9 Open HyperTerminal and establish communication with your pressure device as outlined in the manual 10 Set the pressure device to Polling Mode as described in the ...

Страница 28: ...vailable If either the set point signal line and or the output signal line is relatively long it may be necessary to provide heavier wires especially ground wiring to negate voltage drops due to line wire length An inappropriate PID tuning can also cause this symptom if the D term is too large relative to the P term Controller is slow to react to a set point change or imparts an oscillation to the...

Страница 29: ...N NON CORROSIVE gases and fluids Recalibration The recommended period for recalibration is once every year Providing that the CLEAN NON CORROSIVE mantra is observed this periodic recalibration is sufficient A label located on the back of the device lists the recalibration due date The device should be returned to the factory for recalibration near the listed due date Before calling to schedule a r...

Страница 30: ... Brass 1 HC High Accuracy Calibration 2 Volumes feed pressures exhaust pressures and line sizing will determine the limits of response times Technical Data for Pressure Gauges and Single Valve Pressure Controllers Mechanical Specifications Pressure Product Mechanical Dimensions Process Connections1 P Series Gauges 4 1 H x 2 4 W x 1 1 D 1 8 NPT Female PC Series Controllers 4 1 H x 3 6 W x 1 1 D 1 8...

Страница 31: ...c Input Output Signal Standard RS 232 Serial 0 5Vdc Electrical Connections 8 Pin Mini DIN Wetted Materials 302 303 Stainless Steel Viton Silicone RTV Brass 400 Series Stainless Steel standard units are for non corrosive gases Silicon Glass 1 HC High Accuracy Calibration 2 Volumes feed pressures exhaust pressures and line sizing will determine the limits of response times Mechanical Specifications ...

Страница 32: ...32 P Series All standard ranges P Series Differential Pressure All standard ranges 2 3 0 ...

Страница 33: ...33 PC Series All standard ranges PC Series Differential Pressure All standard ranges 2 ...

Страница 34: ...34 0 PC3 Series All standard ranges PCR3 Series All standard ranges ...

Страница 35: ...35 5 7 6 8 7 8 PCR Series Differential Pressure 5inH2O PCR Series Most standard ranges ...

Страница 36: ...36 PCD Series All standard ranges PCD Series Differential Pressure All standard ranges ...

Страница 37: ...mon indicator that the battery may be approaching the end of its life is a sharp increase in the temperature indicated on the gauge This false signal can result when the voltage drops below its normally regulated level This can affect the accuracy of the gauge so it is good practice to check that the temperature is approximately correct 25 C is about room temperature or use a fresh battery especia...

Страница 38: ...n Mini DIN socket on top of the pressure gauge The two screws trapped in the bottom of the battery pack will not allow the plug to be completely inserted into the socket until they are screwed into place Slip the included hex wrench into either of the two holes on the top of the battery pack as shown 3 below and start the screw into the corresponding threaded hole in the top of the gauge Before th...

Страница 39: ...int or the process measurement Set point Adjustment Knob provides simple dial it in process changes Display button switches display between actual set point and measured flow parameter LED indicator switches from green to red when the measured parameter deviates from the set point by more than 2 of full scale Operation Notes The LSPM requires a double ended DC 62 8 Pin Mini DIN cable connected bet...

Страница 40: ...l Communications including quick selection of the calibration for individual gas selectability and our popular end user access to the terms of the PID loop tuning Flow Vision s Graphing Utility continuously displays the data points of the main parameter selected The graph auto scales the Y axis for the range of the selected parameter Includes easy pause run stop and print features Flow Vision Syst...

Страница 41: ... 6 foot length 8 Pin Male Mini DIN connector cable single ended 25 foot length 8 Pin Male Mini DIN connector cable double ended 25 foot length 8 Pin Male Right Angle Mini Din Cable single ended 6 foot length 8 Pin Male Mini DIN to DB9 Female Adapter 6 foot length Industrial cable 6 Pin single ended 10 foot length Universal 100 240 VAC to 24 Volt DC Power Supply Adapter Flow Vision software for int...

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