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Thank you for purchasing the Greenspan Pressure Sensor Model PS7000.  This manual provides a guide to the 
configuration, operation and maintenance of these sensors to provide long term reliable and accurate monitoring. 

The  Greenspan  PS7000  is  fully  submersible  Pressure  Measurement  Sensor  designed  for  remote  applications.    It 
utilises a sophisticated capacitive ceramic pressure sensitive diaphragm. Its special features include high overload 
protection  (up  to  60  times  nominal  pressure)  corrosion  resistance  and  long  term  stability.  The  change  in  the 
capacitive element varies with applied pressure. This variation is measured by an electronic circuit and converted 
into an analogue output. The sensor can be supplied in a variety of standard ranges. 

The PS7000 has a standard, 2-wire, loop powered, 4-20mAoutput with an option for 0-2.5Vdc suitable for a wide 
range of Data  Loggers, Process Controllers and other third party devices. New features include the ability to re-
range the sensor as well as adjust the fluid density and gravity to suit specific applications. 

The instrument is packaged in a small, robust, stainless steel housing fully sealed against moisture penetration and 
is hardwired to either vented or non-vented cable supplied by Greenspan.  

The sensors are suitable for applications in harsh remote applications including groundwater,  streams and rivers, 
water  storage  bodies  including  stratification  studies,  hydrological  run  off  studies  and  industrial  process 
monitoring. 
   

 

Along with this manual, there are several other documents that may assist in the successful configuration and 
operation of the Greenspan PS7000 Sensor.  These should be maintained on file as a permanent reference as to 
the features, applications and use of the PS7000. 

Greenspan PS7000 – Specifications Brochure 

Greenspan PS7000 – Certificate of Conformance 

Greenspan PS7000 – Quick Start Guide 

 

 

Summary of Contents for Greenspan PS7000

Page 1: ...PENTAIR ENVIRONMENTAL SYSTEMS Version 1 1 ...

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Page 4: ...c suitable for a wide range of Data Loggers Process Controllers and other third party devices New features include the ability to re range the sensor as well as adjust the fluid density and gravity to suit specific applications The instrument is packaged in a small robust stainless steel housing fully sealed against moisture penetration and is hardwired to either vented or non vented cable supplie...

Page 5: ...and User Manual will be provided with all equipment either in hard copy format or in electronic format on the USB shipped with the goods The 316 Stainless Steel PS7000 sensor should only be used in relatively low EC situations Stainless steel has excellent anti corrosion properties but care should be taken against possible corrosion in high Chloride or Ferric solutions water with high iron or sulp...

Page 6: ...dling will void the warranty The correct choice of sensor and assistance with field installation can be provided by Greenspan and their sales offices A correct choice of equipment together with technical advice and field experience should result in long term success in the field Greenspan Technical Services is dedicated to customer support and provides assistance in the selection installation depl...

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Page 8: ...essor converts the transducer output voltage to a digital signal and also measures the transducer temperature This information is used to temperature compensate the sensor over the range 0 50 C The result is converted to an analogue output of typically 4 20mA Benefits of the Ceramic Capacitance Sensors over other types of sensors are Extremely high overload limit typically up to 10 X overload prot...

Page 9: ...8m above sea level The PS7000 has a feature to adjust the fluid density and gravity to suit specific applications For conditions see Clause 1 3 8 3 Australian Standard AS1376 Applications in which the Greenspan PS7000 can be used include Monitoring of streams and rivers Monitoring of water storage bodies including stratification studies Hydrological run off studies Ground and bore water analysis I...

Page 10: ...uired Specially Manufactured Greenspan Cable with 12 cores and Internal Vent High chemical resilience and abrasive resistance Conductor cross section AWG 24 Electrical Resistance 9 ohm per 100m per conductor Operating temperature 85 C max Bending radius static 6 Bending radius dynamic 12 Max Operating voltage 250V Jacket Printing white colour each meter Conductor colour codes green yellow white bl...

Page 11: ...st processing the absolute water level readings The lowest standard range absolute pressure sensor offered is 20m which is suitable for measuring water levels of up to approximately 10m Absolute sensors will read zero in a perfect vacuum and around 10m in air depending on the atmospheric pressure Gauge sensors are suitable for most monitoring applications where water level readings are required Ab...

Page 12: ...clude pipeline monitoring gas bubblers and tanks The serial breakout adaptor Greenspan Part 085 0080 allows connection between the PS7000 and a sensor and PC The user is able to communicate with the sensor in RS232 mode to perform user field adjustments and calibration via the PS7000 Utility Software supplied on USB with all PS7000 s purchases The serial breakout adaptor can also be connected dire...

Page 13: ...the quick set up steps for both the sensor and 7SDI 1000 Quick Set Up Sensor set up Set the PS1000 7000 as a RS232 instrument 1 Connect the sensor to a PC and run the PS7000 utility 2 Click Sensor Set Up 3 Click RS232 radio button 4 Click OK Provide physical connections There is a cable available to assist connecting a bare wire sensor to the 7SDI 1000 adapter Greenspan Part 5CC 770 pictured below...

Page 14: ...emperature range typically 36 points o The calibration is validated at multiple different points typically 25 points o Accuracy and linearity is calculated from the validation data An extensive range of final calibration and inspection tests are carried out on every sensor The sensor is visually inspected and packed ready for despatch The complete calibration records sensor history and batch numbe...

Page 15: ...olar or Mains Plug Pack The following diagram illustrates the typical wiring arrangement for the PS7000 with 4 20mA output Closed Vent System Part 7CVS 001 8 30VDC ve Supply red Cable Shield yellow green Serial comms yellow Serial comms purple Serial Breakout Adaptor optional Software on USB Signal Output 4 20mA blue Vent tube Wiring for 4 20mA Output Sensor ...

Page 16: ...GE output Closed Vent System Part 7CVS 001 8 30VDC ve Supply red Cable Shield yellow green Serial comms yellow Serial comms purple Serial Breakout Adaptor optional Software on USB Signal Output 0 2 5V blue Vent tube Wiring for Voltage Output Sensor Ground ve Supply green Signal Ground brown ...

Page 17: ...cluded with 7SDI 1000 ve Supply red Ground ve Supply black Signal comms white SDI 12 Adapter Part 7SDI 1000 Typically the sensor will be connected to a Data Logger or Process Controller which will provide the power and ground connections and provide connections for serial SDI12 output The Power requirements of the sensor are detailed in the Specifications Brochure ...

Page 18: ...lity is supplied free of charge on all PS7000 orders Greenspan Part 7USB SENSOR To use the full functions of the software a fully operational sensor with power supply and all communications leads should be available Serial Comms Cable Part 087 0088 PC or laptop running PS7000 Utility program Multimeter to check analogue outputs PS1000 PS70000 Breakout Adaptor Part 085 0080 ...

Page 19: ...sensor output A status bar at the bottom shows the current state of the interface while the LEDs indicate activities on transmit and receive lines At start up the only active controls are a drop down list of all available serial ports and the Connect button Select the port number where a sensor is connected ensure that power supply to the sensor is turned on then click Connect to initiate communic...

Page 20: ... configuration items and to re calibrate sensor Depending on the default factory setup the sensed pressure is output as 4 20mA signal or 0 2 5V signal The sensed pressure is output as digital data and displayed on screen together with current temperature This sets the level of averaging Lower levels of averaging will decrease response times but may also increase the level of noise The factory defa...

Page 21: ...a fixed value to the Specific Gravity field The user can specify the coefficients of a fourth order density polynomial for temperature compensation To do this select Use Full Density Polynomial and enter the desired coefficients in the corresponding fields The Specific Gravity field will be greyed out and changed to value of 1 The interface also lets the user enter customized engineering units tog...

Page 22: ...of the screen displays current readings for both pressure and temperature this is only visible when RS232 is selected as sensor output For loading a configuration file stored on PC to the sensor This button is enabled as soon as a valid serial number is received The interface will first check for a serial number match before proceeding to data transfer and resetting the sensor Use this button to s...

Page 23: ...ional stilling wells or mounting brackets may be required to prevent sensor movement which may cause long term cable movement Where cable runs are required which may be subject to environmental effects heat water movement sunlight flood debris etc it is advisable to protect the sensor cable inside a slightly larger diameter conduit such as PVC steel or polyethylene This also allows the sensor cabl...

Page 24: ...ty of situations but care should be taken against possible corrosion in high Chloride Sulphate or Ferric solutions The body should always be totally immersed under the water to ensure that the sensor is at water temperature and to also avoid any possible anodic cathodic action taking place on the components at the water air interface If using clamps to mount the sensor these should be of a type th...

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Page 28: ... 0 50 C Sensor Type Gauge Absolute delete applicable Cable Length Click here type Cable length M Supply Voltage 8 30 VDC Connection ve Red Signal Output Blue Cable Shield Green Yellow Serial Yellow purple Connection Code BW4 Combined temperature and repeatability User Notes 1 Australian Standard AS1376 is used to convert kPa to metres of water 1kPa 102 15 mm water at 20 C 2 Dismantling of the sens...

Page 29: ...al Comms Yellow Purple Connection Code BW6 Combined temperature and repeatability User Notes 8 Australian Standard AS1376 is used to convert kPa to metres of water 1kPa 102 15 mm water at 20 C 9 Dismantling of the sensor will void the warranty Contact your agent for technical advice 10 The sensor is protected against reverse polarity connection 11 The sensor is fitted with a lightning protector su...

Page 30: ...ting method is compromised if the system is disassembled Therefore once installed or reassembled some time is required for trapped air to become dry again One advantage of this method is that the volume of air being dried is always constant therefore the desiccant crystal will not become saturated INSTALLATION Suggested Installation Only The unit is fitted with a DIN clip for fitting to standard D...

Page 31: ...S 001 Cable Vent Tube Joiner Cable Wires Terminal Block T Piece G CVS 001 Figure 1 Single Installation Suggestion Only Sensor Cable Blue DIN Rail Green CVS 001 Cable Vent Tube Joiner Tube Cable Wires Terminal Block Millipore Filter Air Inlet NOTE Number of cable wires will vary depending on sensor type Inlet Heat sealed end Cable Vent Tube Cut here Cut remove tip before use ...

Page 32: ...rease by approximately120ml for every unit connected Note Only remove the inlet seal on the CVS 001 when ready to install the sensor vent tube If dismantling the system ensure that the inlet is sealed CABLE BREAKOUT For existing sensor cables where the vent tube is not accessible a cable breakout kit CBR 001 is available This enables the vent tube to be separated from the wire cores and the juncti...

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