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CS451/CS456 Submersible Pressure Transducer

7.2.3 Split Mesh Cable Grip (pn 25431)

The 25431 Split Mesh Cable Grip is recommended for use in wells to center
the cable and to provide a method of suspending the cable-reducing cable
stretch. FIGURE 7-5 shows a transducer’s cable suspended using the split
mesh cable grip.

FIGURE 7-5. Transducer suspended with split mesh cable grip

7.3 Wiring

Power down your system before wiring the CS451/CS456. The
shield wire plays an important role in noise emissions and
susceptibility as well as transient protection.

NOTE

19

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Содержание CS451

Страница 1: ...CS451 CS456 Submersible Pressure Transducer Revision 1 13 C o p y r i g h t 2 0 0 9 2 0 1 3 C a m p b e l l S c i e n t i f i c I n c ...

Страница 2: ......

Страница 3: ...removing reinstalling and shipping defective products to Campbell Campbell will return such products by surface carrier prepaid within the continental United States of America To all other locations Campbell will return such products best way CIP Port of Entry INCOTERM 2010 prepaid This warranty shall not apply to any products which have been subjected to modification misuse neglect improper servi...

Страница 4: ...ng container Campbell Scientific s shipping address is CAMPBELL SCIENTIFIC INC RMA _____ 815 West 1800 North Logan Utah 84321 1784 For all returns the customer must fill out a Statement of Product Cleanliness and Decontamination form and comply with the requirements specified in it The form is available from our web site at www campbellsci com repair A completed form must be either emailed to repa...

Страница 5: ...agram 4 5 Overview 6 6 Specifications 8 7 Operation 10 7 1 Configuration 10 7 1 1 PC Connection Using the A200 10 7 1 1 1 Driver Installation 10 7 1 1 2 Wiring 10 7 1 1 3 Powering the Sensor 11 7 1 1 4 Determining which COM Port the A200 has been Assigned 11 7 1 2 Device Configuration Utility version 2 03 or higher 12 7 1 3 SDI 12 Transparent Mode 12 7 1 4 RS 232 Connection via PC Terminal Softwar...

Страница 6: ... 8 2 Every Two to Three Years or on a Rotating Schedule 24 9 Troubleshooting 24 Appendix A Calibration Certificate A 1 Figures 5 1 CS451 nose cone options 7 7 1 A200 Sensor to PC Interface 11 7 2 Connect screen 12 7 3 Terminal Emulator 13 7 4 Terminal Emulator 15 7 5 Transducer suspended with split mesh cable grip 19 Tables 7 1 Factory Settings 10 7 2 A200 Wiring 11 7 3 RS 232 Settings 14 7 4 RS 2...

Страница 7: ...able parts and any attempt to disassemble the device will void the warranty Care should be taken when opening the package not to damage or cut the cable jacket Dropping the instrument or allowing it to free fall down a well may damage the transducer Never suspend the CS451 CS456 from the connections at the top end of the cable Sharp bends or excessive pinching of the cable can cause damage and may...

Страница 8: ... programming information see Section 7 Operation 4 1 Step 1 Desiccant Check The desiccant tube is shipped with a black cap to cover the vent hole This cap MUST be removed prior to installation CAUTION Ensure the desiccant is blue replace if not The desiccant tube must always be attached to the CS451 CS456 4 2 Step 2 Choose Appropriate Depth The CS451 CS456 must be installed below the water at a fi...

Страница 9: ...e sensor CAUTION With long drops it may be necessary to use the weighted nose cone option WN The transducer body can be strapped with tie wraps or tape Campbell Scientific offers cable ties pn 7421 that can be used to secure and strain relief the cable If installing in a well fasten the cable to the well head Wrap the cable ties around the cable jacket Never suspend the CS451 CS456 from the connec...

Страница 10: ...Win to Program Datalogger and Generate Wiring Diagram The simplest method for programming the datalogger to measure a CS451 CS456 is to use SCWin 1 Open Short Cut and click on New Program then select Next 2 Select a datalogger and scan interval then select Next 4 ...

Страница 11: ...xt 4 Select Offset Calculation then select lvl_ft for the Linked Level and enter the initial water level in the Observed Level Reading box Enter initial water elevation here 5 Choose the outputs and then select Finish 6 In the Save As window enter an appropriate file name and select Save 7 In the Confirm window click Yes to download the program to the datalogger 5 ...

Страница 12: ...rts to a low power sleep state between measurements A series of measurements are performed yielding a temperature and pressure value This measurement cycle takes less than 1 5 second The transducer can also be configured to output pressure only in less than 1 second The measurement cycle is activated by commands via SDI 12 or RS 232 terminal commands The design uses a piezoresistive sensor housed ...

Страница 13: ...by the CS451 CS456 pressure level and temperature The CS451 CS456 is shipped from the factory to output pressure in psig and temperature in degrees Celsius The CS451 CS456 has three nose cone options FIGURE 5 1 shows the nose cone options The weighted nose cone makes the transducer easier to submerge to depth The NPT nose cone allows the transducer to be used in closed pipe applications The nose c...

Страница 14: ...ansducer easier Compatible Dataloggers CR200 X series CR800 CR850 CR1000 CR3000 CR5000 CR500 CR510 CR10 X CR23X Power Requirements 5 to 18 Vdc Power Consumption Quiescent current 50 µA Measurement Communication Current 8 mA for 1 s measurement Maximum Peak Current 40 mA Measurement Time Less than 1 5 s Outputs SDI 12 version 1 3 1200 bps RS 232 9600 bps Measurement Ranges Pressure psig Pressure kP...

Страница 15: ...erial Delrin Dimensions Length 213 36 mm 6 875 in Diameter 21 34 mm 0 84 in Distance from pressure sensor interface black line etched on housing to End of NPT fitting 2 54 cm 1 in End of standard nose cone 2 3 cm 0 9 in End of weighted nose cone 9 9 cm 3 9 in Air Gap Standard and weighted nose cone 0 653 cm 0 257 in NPT fitting 2 72 cm 1 07 in Weight CS451 0 17 kg 0 37 lb CS456 0 10 kg 0 23 lb Cab...

Страница 16: ...00 The A200 or another device is required to connect the CS451 CS456 to a PC This allows sensor settings to be changed via our Device Configuration Utility 7 1 1 1 Driver Installation If the A200 has not been previously plugged into your PC and your PC operating system is not Windows 7 the A200 driver needs to be loaded onto your PC Drivers should be loaded before plugging the A200 into the PC NOT...

Страница 17: ... as HyperTerminal Often the assigned COM port will be the next port number that is free However if other devices have been installed in the past some of which may no longer be plugged in the A200 may be assigned a higher COM port number To check which COM port has been assigned to the A200 watch for the appearance of a new COM port in the list of COM ports offered in the software package e g Logge...

Страница 18: ... that was assigned to the A200 see Section 7 1 1 4 Determining which COM Port the A200 has been Assigned Click on the Connect button to enable communication with the sensor Once successfully connected the screen should look like FIGURE 7 2 FIGURE 7 2 Connect screen There are three settings that can be changed SDI 12 address Pressure Level Units and Temperature Units Double click on the window of t...

Страница 19: ...the CR800 Type SDI12 at the prompt and press Enter In response the query Enter Cx Port 1 3 5 or 7 will appear Enter the control port integer to which the transducer is connected An Entering SDI12 Terminal response indicates that SDI 12 Transparent Mode is active FIGURE 7 3 Terminal Emulator For CR10X and CR510 standard mixed array dataloggers the telecommunications command to enter SDI 12 transpar...

Страница 20: ... is connected to the PC via the A200 see Section 7 1 1 PC Connection Using the A200 Upon setup the terminal emulator software will request you enter the Communication connection defaults to a phone connection Change the communication to appropriate Com in the Connect Using box see Section 7 1 1 4 Determining which COM Port the A200 has been Assigned to determine the COM port that was assigned to t...

Страница 21: ... menu 7 1 5 SDI 12 Commands The CS451 CS456 uses an SDI 12 compatible hardware interface and supports a subset of the SDI 12 commands The most commonly used command is the aM command issued by the datalogger where a represents the sensor address The communication sequence begins with the datalogger waking the sensor and issuing the aM command The transducer responds to the datalogger indicating th...

Страница 22: ...s break down resulting in either no response or excessive SDI 12 retries and incorrect data due to noise problems Using SDI 12 commands like aMC which adds a CRC check can significantly improve incorrect data issues 7 1 5 1 SDI 12 Addresses Multiple sensors can be connected to a single digital I O channel control port on an SDI 12 compatible datalogger each sensor must have a unique SDI 12 address...

Страница 23: ...t units is aXCONFIG1 tt pp mmm mm 000 00 where a the SDI 12 address of the sensor tt temperature units pp measurement unit mmm mm multiplier slope and 000 00 offset Valid entries for tt temperature are 0 Celsius 1 Fahrenheit and valid entries for pp pressure level are 0 psig 1 kPa 2 Bar 3 Feet 4 Meter 5 Inch 6 Millimeter Only SDI 12 instruction aM aM7 and aM8 output the results obtained when using...

Страница 24: ... the vertical position There will be an offset error if not installed vertically contact Campbell Scientific for more information Strapping the transducer body with tie wraps or tape will not hurt it 7 2 2 Offset Calculation The pressure created is directly proportional to the water column above the sensor An offset is used to correct the final measurement to any error due to sensor zero offset or...

Страница 25: ...de a method of suspending the cable reducing cable stretch FIGURE 7 5 shows a transducer s cable suspended using the split mesh cable grip FIGURE 7 5 Transducer suspended with split mesh cable grip 7 3 Wiring Power down your system before wiring the CS451 CS456 The shield wire plays an important role in noise emissions and susceptibility as well as transient protection NOTE 19 ...

Страница 26: ...9 pin Red 12vdc Power Source Black Power Ground Power Ground White RS 232 Tx Output Transmit Pin 2 Rx Input Blue RS 232 Rx Input Receive Pin 3 Tx Output Yellow Digital Ground Ground Pin 5 GND Clear Shield GND Ground 7 4 Programming SCWin is the preferred method for programming the datalogger SCWin generates a wiring diagram that shows how to connect the CS451 CS456 to your Campbell Scientific data...

Страница 27: ...ation Output String Multiplier Offset 7 4 1 1 Example Program for CR200 X Series Datalogger CR200 X Series Declare the variable for the water level measurement Public CS451 2 Rename the variable names Alias CS451 1 Level Alias CS451 2 Temp_C Define a data table for 60 minute maximum and minimums DataTable Hourly True 1 DataInterval 0 60 Min Maximum 1 Level 0 0 Minimum 1 Level 0 0 Maximum 1 Temp_C ...

Страница 28: ...rogrammed with Edlog These dataloggers use Instruction 105 to read the CS451 CS456 Your datalogger manual has a detailed explanation of Instruction 105 Please note that Edlog only allocates one input location for Instruction 105 Two input locations are required one for the pressure measurement and one for the temperature measurement The additional input location needs to be inserted manually using...

Страница 29: ...temperature in degrees Celsius The results can be further processed by the datalogger Note that Port 1 specifies that the SDI 12 data line is to be connected to the Port C1 8 Maintenance Campbell Scientific recommends that the CS451 CS456 be factory recalibrated and checked every 24 months Before a CS451 CS456 sensor is sent to Campbell Scientific the customer must get an RMA returned material aut...

Страница 30: ...wo to Three Years or on a Rotating Schedule Send the CS451 CS456 in for inspection 9 Troubleshooting The most common causes for erroneous pressure transducer data include poor sensor connections to the datalogger damaged cables damaged transducers moisture in the vent tube Problem Unit will not respond when attempting serial communications Suggestion Check the power red is V and black is ground an...

Страница 31: ... type of device Normal changes in barometric pressure will appear as water level fluctuations and these types of errors are typically on the order of 1 foot of water level If the desiccant chamber has not been properly maintained water may have condensed in the vent tube and the device should be returned to the factory for service 25 ...

Страница 32: ...CS451 CS456 Submersible Pressure Transducer 26 ...

Страница 33: ... the test chamber at the time of testing Pressure After kPa represents the resulting measurement output by the CS451 CS456 at the give pressure and temperature Finally Deviation After F S provides the difference between the actual pressure applied to the sensor and the pressure measurement output by the sensor This value is listed as a percentage of the Full Scale range of the sensor When a CS451 ...

Страница 34: ...Appendix A Calibration Certificate A 2 ...

Страница 35: ......

Страница 36: ...entific Canada Corp CSC 11564 149th Street NW Edmonton Alberta T5M 1W7 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientific Centro Caribe S A CSCC 300 N Cementerio Edificio Breller Santo Domingo Heredia 40305 COSTA RICA www campbellsci cc info campbellsci cc Campbell Scientific Ltd CSL Campbell Park 80 Hathern Road Shepshed Loughborough LE12 9GX UNITED KINGDOM www campbellsci c...

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