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FCS Sentinel 2, User Manual, Page: 43 / 77

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FCS Sentinel 2 User Manual Download Page 43

43 

4.5

 

R

E

-

ZERO 

P

RESSURE TRANSDUCERS

 

Ensure any external pressure transducers are connected to the Sentinel 2 at this stage. 

•

 

Be sure to connect the inlet pressure transducer to the connector labelled “PRV 
Inlet pressure”.

 

•

 

Be sure to connect the outlet pressure transducer to the connector labelled “PRV 
outlet pressure”.

 

Ensure connectors are correctly fitted 
so that they are watertight. 
 
The transducers (internal or external) 
must now be re-zeroed whilst in 

atmospheric pressure

 (not 

connected to water pressure). 
 
 
Select the Hardware Tests tab in IDT 

and click the “Re

-

Zero” button.

 

 
 
 
 
 
 

Select the “PRV Inlet 

pr

essure” transducer

 

by picking “Channel 1” on 

the drop-down control. 
  

Then click “OK”.

 

Summary of Contents for Sentinel 2

Page 1: ...e Sentinel 2 2 point Pressure control system Warning This manual contains important safety and operating information Please read understand and follow the instructions in the manual MAN 163 0004 B Sep...

Page 2: ...6 2 6 Hydroswitch Description 18 2 7 Mechanical Actuator 21 2 8 Summary of PRV Function Pilot operated 21 2 8 1 Main valve 21 2 8 2 Pilot Valve operation 22 2 8 3 Pilot operated pressure reducing valv...

Page 3: ...g the HWM mechanical actuator 51 4 13 Bleed air from the pipework and actuator 53 4 14 Test Pressure transducers 54 4 15 Testing the Actuator and PRV Pressure change response 55 4 16 PRV Control metho...

Page 4: ...6 Connection Information 71 6 1 1 FLOW Meter connection cable RAG 93 71 7 Maintenance Service and Repair 72 7 1 1 Return of product for Investigation Service Or Repair 72 7 1 2 Putting the equipment i...

Page 5: ...sus 2 family of models Pegasus 2 has its own user guide Note The system periodically has new features and changes released thus you may observe slight changes in layout from those shown in this manual...

Page 6: ...put pressure to either a High or Low setting based on a pre determined pressure profile The profile can be based on The time of day or The flow rate demand of water or Both of the above The pressure p...

Page 7: ...ternal HWM battery unit see opposite Where supplied the external battery power is used to extend the battery life of the system or more frequent communications with the host server The battery connect...

Page 8: ...An example of a PRV with Sentinel 2 system installed is shown opposite Several plumbing configurations exist depending on upstream and downstream pressures Configuration also dependent on the paramete...

Page 9: ...w website allows the Sentinel 2 data to be combined with pressure measurements made by another HWM logger device some distance down stream of the PRV e g at a critical point Both the local and remote...

Page 10: ...r Support website or from the following webpage https www hwmglobal com idt support Note The user has to be registered by HWM and have a password to gain access Once installed an icon will be availabl...

Page 11: ...gram settings in the current program memory area This copy can be edited The unit itself is not updated with any of the program changes unless the user later saves the settings stored in IDT back to t...

Page 12: ...led The offset of local time from UTC is shown in brackets Any greyed out fields indicates the user cannot adjust them typically for factory set parameters Any non greyed areas indicate the user can e...

Page 13: ...he unit This action can also be used to activate the built in logger The running status of the built in logger is shown on the top line of the Logger panel within the setup tab as shown Here it is sho...

Page 14: ...IDT reports that the unit has been given the new settings successfully The logger functions have been set to start at a convenient time The logger is Waiting for the recording start time to arrive The...

Page 15: ...n be optionally applied to produce a datapoint that is logged saved a point measurement a single data sample can alternatively be saved The rate at which these are recorded is known as the log period...

Page 16: ...stream water pressures Other interface options can be included at the time of ordering An example of a Sentinel 2 Control Box is shown opposite It contains the following standard interfaces A connecto...

Page 17: ...ital Flow Inputs Maximum of 128 pulses second from a volt free output Additional Options key 0 Option Not Fitted I Electrical Interface I2C M Electrical Interface Modbus 5 Analogue 4 20mA Flow input P...

Page 18: ...ure sensors The unit includes a 3 pin connector for Hydroswitch 2 6 HYDROSWITCH DESCRIPTION The Hydroswitch shown opposite is a required part of the Sentinel 2 system It includes a 3 port latching sol...

Page 19: ...h into its default state This connects a path between the ports labelled Common and Pressure Feed in the above diagram This default path is also the one that will be active if the Control Box battery...

Page 20: ...controls within the Manual Override panel located in the PRV Installation tab Alternate between setting the target pressure output between Low and High then clicking the Override button The Override...

Page 21: ...utlet pressure being set mechanically Typically this is by the manual adjustment of a setting bolt which acts on a spring The actuator used within a Sentinel 2 system replaces the setting bolt It allo...

Page 22: ...ne by a needle valve which may be either internal to the pilot valve or external to it within the pipe feeding upstream water to the inlet of the pilot valve When the pilot valve opens some of the wat...

Page 23: ...sets a lower output pressure However if the upstream water pressure in the Pressure Reducing Pilot 1 does allow the Pilot to open the water exits the valve and becomes downstream water but more impor...

Page 24: ...ure applied The upper chamber of the actuator fills with water which causes the plunger to depress the spring more This causes the pilot valve to open more This decreases the pressure in the lower par...

Page 25: ...e more closed thereby decreasing the downstream pressure Note The actuator range of movement is limited by two mechanical end stops which are adjusted during installation These set the High pressure a...

Page 26: ...rive the PRV pilot to give a High downstream pressure or safety override HWM mechanical actuator Provides a means to set mechanical Maximum and Minimum on the pilot Pilot valve The pilot valve fitted...

Page 27: ...ot supplied via a MIL spec connector labelled Flow The unit receives upstream water pressure information via the connection labelled PRV Inlet Pressure This could be either via a plumbed in connection...

Page 28: ...output from the Hydroswitch It is used to drive the HWM mechanical actuator The Hydroswitch valve body is labelled red and green dots to assist in identifying the ports during installation Cable from...

Page 29: ...29 3 2 STANDARD INSTALLATIONS 2 POINT PRESSURE CONTROL 3 2 1 Using internal transducers Upstream pressure 90 m...

Page 30: ...30 3 2 2 Using external pressure transducers Upstream pressure 90 m...

Page 31: ...31 3 2 3 Using internal transducers Upstream pressure 90 m...

Page 32: ...32 3 2 4 Using external pressure transducers Upstream pressure 90 m...

Page 33: ...the time of manufacture Select the appropriate model part number Refer to your sales representative for assistance if required For example it may be required that an additional pressure transducer be...

Page 34: ...ed interfaces Determine the most appropriate control method for the PRV time flow or combined time and flow Select an appropriate connection scheme for the PRV and ensure pipes and accessories are ava...

Page 35: ...the installer should seek to find the optimal location for the antenna within the installation see section 4 21 4 1 2 Battery If the system is to be installed with an external battery optional but som...

Page 36: ...control It can be used as a measurement interface option for logging purposes only Connect the Flow meter end of the cable to the flow meter Then connect the cable to the Control box via the 4 pin co...

Page 37: ...irming it is correctly configured to suit the installation site Channels can be added using the button e g if other optional interfaces are fitted To modify an already existing channel click on the re...

Page 38: ...M Our example unit Sentinel 2 unit has 4 available input transducers input sensors Pressure1 An internal pressure transducer located at the port labelled PRV inlet pressure Flow Bi An electrical inter...

Page 39: ...by 0 1 to convert it to metres m the selected recording unit Input multiplier is therefore set 0 1 The Logging Mode should be set at average for Sentinel 2 this will smooth out any noise short fluctu...

Page 40: ...one of the following Flow Bi for a Bidirectional Flow meter as in this example or Flow Uni for a Unidirectional Flow meter The Input Sensor drop down selection box is used to choose the electrical in...

Page 41: ...0 litres Units per pulse should be set to 10 Logging Mode should be set at average for Sentinel 2 this will smooth out any noise short fluctuations in the readings and give a representative value of f...

Page 42: ...he example opposite including any negative symbols Note The final number represents the maximum pressure range of the transducer in bar At this stage it is important that the channel settings stored i...

Page 43: ...t the outlet pressure transducer to the connector labelled PRV outlet pressure Ensure connectors are correctly fitted so that they are watertight The transducers internal or external must now be re ze...

Page 44: ...than 5 contact a HWM representative for advice Repeat the process for the second pressure transducer This is identical but requires selection of the PRV Outlet pressure transducer by picking Channel...

Page 45: ...f installation required Standard installation where inlet pressure to PRV is less than 90m Refer to diagram in section 3 2 1 for use with internal pressure transducers Refer to diagram in section 3 2...

Page 46: ...any Sentinel pressure transducers and also the water feed to the Hydroswitch inlet port Ensure these service taps are closed to allow work to proceed Fit Y adaptors or quick release connectors to the...

Page 47: ...ushing the end of the pipe into the port The pipes will be sealed and retained by the connector until they are manually released which requires pushing on the connector s ring whilst pulling the pipe...

Page 48: ...ttach the water hose from the 3 way manual valve to the port shown as Actuator normally via a manual tap in the diagram opposite 4 9 SET HYDROSWITCH VALVE INTO AUTO MODE A manual override control is o...

Page 49: ...sure transducer If not already attached connect the water feed to the Hydroswitch The water feed should come from the inlet side of the PRV if the pressure is below 90m otherwise the water feed should...

Page 50: ...e This will ensure that the volume of water contained in the pilot valve will remains constant its diaphragm is locked in position Note The upper chamber of the PRV valve is now locked in position The...

Page 51: ...ew and remove the existing PRV pilot adjustment bolt see picture Check the outlet pressure reading whilst removing the bolt the pressure should not change If pressure drops at this point a valve is le...

Page 52: ...ilot see picture This will secure the maximum outlet pressure Whilst checking the outlet pressure of the PRV set the minimum pressure required by adjusting the position of the actuator head To do this...

Page 53: ...Open any additional PRV service valve that connects water pressure to any pressure transducers internal or external Where internal transducers are fitted detach and then re attach the pipes using the...

Page 54: ...ve the tap in a position which connects the solenoid valve pipe through to the actuator Use the Manual Override controls within the PRV Installation tab of IDT to bleed air out of the pipework Cycle b...

Page 55: ...effects Adjust the needle valve within the pilot control to give the required response time and also ensure a smooth pressure transition when switching This can be achieved by setting a target pressu...

Page 56: ...the control settings are enabled the unit behaves as if PRV control is disabled the PRV actuator setting remains fixed 4 16 1Setup of pressure control using a Time profile To use a pressure profile t...

Page 57: ...reaching an entered time Lines can be added to IDT in any order After the program has been saved to the device and read back the profile can be checked the lines will be re sequenced according to time...

Page 58: ...fire hydrant is used whilst pressure is set to Low the pressure may drop due to demand Therefore over ride to High pressure If a water mains burst occurs whilst pressure is set to High the pressure ma...

Page 59: ...ndent on Flow certain settings in Sentinel 2 define what should happen if there is a fault detected in the Flow meter The target pressure will be as per the setting Default Pressure One condition that...

Page 60: ...er demand has consistently changed e g With the settings shown above pressure will be High when it increases past 2988 l s and will change to Low when it falls below 972 l s IDT will detect an error s...

Page 61: ...settings if there happens to be a difference 4 17SETUP FOR ANNUAL TIME ADJUSTMENTS Some countries have a scheme for adjusting the local time annually to make the most of available sunlight hours and f...

Page 62: ...2 3 4 However the installer must now ensure that Sentinel is fully activated i e Click on Yes when asked if you wish to start controlling now Note After the unit is fully operational the user can sti...

Page 63: ...tinel operation 4 20SETUP OF DATA DELIVERY Sentinel can be setup to call into the HWM DataGate server over the mobile phone network at specific times During a call in it will send measurement data or...

Page 64: ...correct operation of Sentinel2 Note The unit may be set to generate a message to the server often called an alarm These may be set to make calls in addition to any schedule programmed here 4 20 2Desti...

Page 65: ...Primary data channels as described in this user guide will fall back to being sent via SMS messages if the server cannot be reached by the mobile data network Tick the Alarms and Secondary Files i e...

Page 66: ...ection Note The settings required will be provided by your system administrator 4 21COMMUNICATIONS ANTENNA LOCATION CHECK Communications over the cellular network can be confirmed by making a test cal...

Page 67: ...l open with various types of modem tests Click on the CSQ button This measures the received signal strength and a new measurement is made every few seconds CSQ values are in the range of 1 to 33 A hig...

Page 68: ...ck the configuration has been correctly saved i e Click the Read device button and confirm all settings are correct Check the status is also set to Record Check the PRV controller Start control button...

Page 69: ...w system to fine tune the performance of the Sentinel profile tables and settings Data can also be downloaded from the unit into IDT for previewing locally 5 1 MANUAL DOWNLOAD OF DATA INTO IDT PREVIEW...

Page 70: ...the channels being logged To zoom to specific times dates click and drag over the part of the screen required Click the Zoom Full button to show all data once more A larger display can be shown by cli...

Page 71: ...ble RAG R93 Connect the cable to the flow meter s volt free pulse interface Use the green wire as ground Use the blue cable as signal Direct flow meter connections available on request Sentinel2 side...

Page 72: ...options and part numbers to order refer to the following link https www hwmglobal com antennas support SIM card SIM cards are replaceable by a HWM approved service centre or relevantly trained techni...

Page 73: ...any unsent data before this operation To put the Sentinel2 into shipping mode Read the current configuration of the Sentinel2 using IDT From within the PRV Installation tab click on the No Control but...

Page 74: ...rogrammed IDT will warn that the logger device has been stopped Click OK and confirm that the status of Stopped is shown at the top of the IDT Logger panel Note The unit may now be re packed for shipp...

Page 75: ...Display Units panel The Pressure setting determines how pressure is displayed within IDT Pick a selection using the drop down selector This is entirely a user preference for using IDT Sentinel 2 is u...

Page 76: ...eference for using IDT Sentinel 2 is unaware of the user s choice and is not in any way affected IDT will convert between the display settings and the units Sentinel 2 requires By making the appropria...

Page 77: ...d or disclosed to a third party without the permission of the company All images text and designs are protected by international and UK copywrite law and remain the property of HWM Water It is against...

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