module 7 mark heggli innovative hydrology, inc. consultant to the world bank expert real-time...

Specifications: Instrumentation, Real-time Data Relay, Management, Maintenance and Training

Module 7

Mark HeggliInnovative Hydrology, Inc.

Consultant To The World BankExpert Real-Time Hydrology Information Systems

Notice

Examples that refer to products are intended for illustrative purposes only, and do not imply an

endorsement or recommendation of any particular product

Specifications

Technical Specifications General Informationo Address The Needso Key Requirementso Functional Specifications Vs Vendor Driven Specifications

Instrumentationo Data Loggero Surface Water

• Water Level• Discharge

o Ground Watero Rainfall

Real-time Data Relay Management Maintenance and Training

Technical Specifications General Information

Address the Needso It is recommended that a complete survey of water level stations be

included prior to the final selection of appropriate technologies o The solutions should be determined on a site-by-site basis, as no

single technology will be suitable or sustainable for all gauging locations in India

o There is a desire to use non-contact solutions to measure water level whenever possible, though part of a centric solution may include contact measurement methods

o Lifetime of Equipment• The expected life-time of electronic equipment such as data loggers,

sensors, etc., is expected to be at least 12 years and no longer than 15 years

• After 15 years, hydrologic monitoring equipment generally becomes obsolete, and is usually the maximum timeframe that manufacturers support a given make/model of equipment

• It should be stated in the tender document that current technology will only be offered, and equipment being offered will be supported for a minimum of 10 years after the date of final acceptance of equipment

Technical Specifications General Information:Key Requirements

Accuracy: o The correctness of the reading (how close it is to reality)

Two primary sources of error is drift and stability. Resolution:

o The fineness to which an instrument can be read. Precision:

o The fineness to which and instrument can be read repeatedly and reliably (Usually inversely proportional to range)

Range: o The span of the expected measurements


Accuracy and Precisiono Not accurate but

preciseo Accurate but not

preciseo Not accurate, not

precise


Functional Specifications vs Vendor Driven Specifications

Functional Specifications

Functional Specifications are specifications that address the true needs of the customer. It takes into account all important factors that are best for the customer:

Cover customer parameterso Measurement

• Range • Accuracy • Resolution• Precision• Output

o Power• Voltage• Consumption

o Environment• Operational and Storage Temperature• Humidity• Protection from elements (NEMA, IP)

o Other• Mounting Requirements• Cable Lengths• Calibration Needs• Tools• Manuals

Create competitiono Write specifications that comply with multiple vendors

while covering the customer needs

Vendor Driven Specifications

Vendor Driven Specifications are specifications that written for a particular vendor or producto Usually are written for a specific producto It eliminates competition from the bid

• May increase the cost for to the customer since no competition is created

• May provide equipment that is not the best for the customer because it is suites the vendor not the customer

Instrumentation: Data Logger

Instrumentation: Data Logger Continued

Data Logger

Item Specification

System

Display Digital display for viewing the latest data. Must be part of the logger and not require the opening of the logger and exposure of hardware parts to the elements.

Keyboard function to allow the adjustment of datums and viewing of data on display (must be internal)

Sensor Input 4 analog input 2 digital input (different then digital output) 2 digital output (programmable) 2 tipping bucket input SDI-12; allowing connection to 10 SDI-12 devices with 5 parameters per

device Other inputs required by sensors being installed at station A/D resolution 16 bits or better

I/O Interface 2 input interfaces for the use of data communication, including simultaneous use of any 2 data communications radios/systems

1 input/output interface for the programming of the data collection platform. This must be in addition to the two input/output interfaces used for data communication. Cables for programming shall be included with each data logger.

Software Unlimited licenses for the software used for data communication Software compatible with Windows XP and Windows 7 Software language in English

Data Storage Storage of one year of data, expandable to 1 GB or better Memory for data storage shall be non-volatile. Data stored will not be lost

in the event of power interruption or system reset.

Power

Voltage 11-15 V DC Data collection platform shall survive reverse polarity connections (system

will operate normally when polarity is applied properly without any other changes, such as fuses)

If Data Collection Platform power is interrupted the platform will have the option to restart data collection and transmissions automatically, and without technician intervention.

Environmental

Humidty 0 to 100% operational and storage

Temperature -10 ˚ C - + 60 ˚ C operational and storage

Other Requirements

Mounting The data logger shall be easy to dismount and replace in the event of malfunction.

Data logger mounting supports and other accessories included. Enclosure shall be designed to dissuade or otherwise prevent unauthorized

access. All wire runs between the data logger, sensors and power supply shall be

similarly designed. All parts, cables, components required to successfully operate the

products as a complete system.Tools and Manuals

Complete toolkit for installation and routine maintenance giving full details. (number of pieces and type)

Full documentation and maintenance instructions in English. (1 per station)

Systemo Displayo Sensor Inputo I/O Interfaceo Softwareo Data Storage

Powero Voltage

Environmentalo Humidityo Temperature

Other Requirementso Mountingo Tools and Manuals

Instrumentation: Surface Water Level - Bubbler

The bubbler system includes non-submersible pressure transducer, automatic bubble system, orifice line and orifice which shall meet or exceed the following specifications:o Continuous bubbler (line under pressure

continuously) utilizing supply tank.o Water level sensor technology shall be a non-

submersible pressure transducer that will be located in the gauge house.

o Anodized pipe or similar material, orifice line and orifice cap will be supplied by the bidder. In the case of measuring over a high range of water levels, several orifice lines shall be constructed with a minimum of 15% of the range of pressure transducer overlap between lines (~3m). In these cases the bubbler will come with a multiple orifice manifold where orifice lines are permanently fixed to the bubbler.

o Solar charging system and battery backup which will be included at every station shall be designed to accommodate the continuous operation of the bubbler.

Instrumentation: Surface Water Level – Bubbler Continued

System Water Level

o Rangeo Accuracyo Resolutiono Outputo Calibrationo Orifice Lineo Air Drying Systemo Sensor Typeo Purgeo Bubble Rate

Powero Voltageo Consumption

Environmentalo Protectiono Humidityo Temperature


Bubbler Water Level

Item Specification

System

Description The bubbler is a contact solution that will be used if there is a site that is suitable for this technology. A continuous bubbling system is required, where bubbles are continuously produced thus keeping the line under pressure

Water Level

Range 15 psi or the range of the level

Accuracy < 0.02% Full Scale

Resolution 3mm @ 15 psi

Output SDI-12

Calibration Ability to perform calibration in Bangladesh; Calibration equipment to be included in bid.

Orifice Line Must be provided and will be determined on site by site basis upon inspection by bidder.

Air Drying System

System must not require maintenance for a minimum of two years of continuous service in the field, which includes changing desiccant, if a desiccant system is offered.

Sensor Type Non-submersible transducer.

Purge Manual line purge.

Bubble Rate Programmable 30-120 bubbles per minute

Power

Voltage 10-15 V DC

Consumption <25mA based on 60 bubbles per minute

Environmental

Protection NEMA 4


Temperature -10 ˚ C - + 60 ˚ C operational and storage

Other Requirements

Mounting The bubbler shall be easy to dismount and replace in the event of malfunction.

Bubbler mounting supports and other accessories included. Enclosure shall be designed to dissuade or otherwise prevent

unauthorized access. All wire runs between the bubbler and the data logger shall be similarly

designed. Bidder must submit and have approved a schematic of civil works that

assures a robust and secure installation prior to start of work. Orifice line must be protected by conduit.

Tools and Manuals



Instrumentation: Surface Water Level- Shaft Encoder

Shaft Encoder

Instrumentation: Surface Water Level- Shaft Encoder Continued

Site Conditions Sensor Type Resolution Output Accessories Enclosure Tools and Manuals

Shaft EncoderItem Specification

Site Conditions • Ambient Temperature: -40 to +60 degrees C (air)Sensor Type • Shaft encoder with digital readout

Resolution • 3mm or less

Output • SDI-12

Accessories • Floats, graduated tapes (metric), wheel, counterweight, and cabling

Enclosure • Lockable (key) box provided by the supplier to be mounted within the gauge house

Tools and Manuals

• Full documentation and maintenance instructions in English (1 copy per station)

• Complete tool kit for installation and routine maintenance giving full details (number of pieces and type)

Instrumentation: Surface Water Level – Submersible Pressure Transducer

Instrumentation: Surface Water Level – Submersible Pressure Transducer Cont.

System Water Level

o Rangeo Accuracyo Resolutiono Precision/Stabilityo Calibration

Temperatureo Rangeo Accuracyo Resolutiono Precision/Stabilityo Calibration

Powero Voltage

Environmentalo Protectiono Temperatureo Humidity

Pressure Transducer

Item Specification

System

Description System will be a complete in-pipe solution with all components inserted within a pipe of not more than 75 mm in diameter and 3 m of total length. System will come complete with components to secure device in pipe.

Water Level

Range 0-10m

Accuracy ± 5 mm including reproducibility and hystersis

Resolution ≤ 1 mm

Precision/Stability

± 1 mm/year

Calibration Ability to perform calibration in India. Calibration equipment to be included in bid.

Cabling 3 m

Temperature

Range 0 – 40 ˚ C

Accuracy ± 0.5 ˚ C

Resolution ≤ 0.1 ˚ C

Precision/Stability

± 0.5 ˚ C/year

Calibration Ability to perform calibration in India; Calibration equipment to be included in bid.

Power

Voltage ≤ 12 V DC

Environmental

Protection All components IP-68

Temperature 0 to 50 ˚ C operational / -10 to 70 ˚ C storage


Instrumentation: Surface Water Level - Ultrasonic

Instrumentation: Surface Water Level – Ultrasonic Continued

Ultrasonic Water LevelItem Specification

SystemDescription The ultrasonic sensor is a not contact solution. It will need to

be mounted on a bridge or platform.Water Level

Range 0-10mAccuracy 0.25% of detected rangeResolution 2.5mmOutput 4-20mA or SDI-12Calibration Ability to perform calibration in Bangladesh; Calibration

equipment to be included in bid.Power

Voltage 11-16 V DCConsumption < 150mA @ 12VDC (unit will be on switched power so that it

operates and draws power only at measurement time)Environmental

Protection NEMA 4Humidty 0 to 100% operational and storageTemperature -10 ˚ C - + 60 ˚ C operational and storage

Other RequirementsMounting The ultrasonic sensor shall be easy to dismount and

replace in the event of malfunction. Ultrasonic mounting supports and other accessories

included. Enclosure shall be designed to dissuade or otherwise

prevent unauthorized access. All wire runs between the ultrasonic and the data logger

shall be similarly designed. Bidder must submit and have approved a schematic of

civil works that assures a robust and secure installation prior to start of work.

Tools and Manuals



System Water Level

o Rangeo Accuracyo Resolutiono Outputo Calibration


Environmentalo Protectiono Temperatureo Humidity


Instrumentation: Surface Water Level - Radar

Instrumentation: Surface Water Level – Radar Continued

Radar Water LevelItem Specification

SystemDescription The radar is a preffered non contact solution. The radar will

be connected to the data logger specified Water Level

Range 1-30mAccuracy ≤ .03% full scale Resolution ≤ 3 mmOutput SDI-12Calibration Ability to perform calibration in Bangladesh; Calibration

equipment to be included in bid.Cabling Must be provided and will be determined on site by site basis

upon inspection by bidder.Power

Voltage 10-15 V DCConsumption Active: <20mA, Sleep: <10mA

EnvironmentalProtection NEMA 4Humidty 0 to 100% operational and storageTemperature -10 ˚ C - + 60 ˚ C operational and storage

Other RequirementsMounting The radar shall be easy to dismount and replace in the

event of malfunction. Sensor mounting supports and other accessories

included. Enclosure shall be designed to dissuade or otherwise

prevent unauthorized access. All wire runs between the radar and the data logger

shall be similarly designed. Bidder must submit and have approved a schematic of

civil works that assures a robust and secure installation prior to start of work.

Tools and Manuals



System Water Level

o Rangeo Accuracyo Resolutiono Outputo Calibrationo Cabling


Environmentalo Protectiono Humidityo Temperature


Instrumentation: Discharge – Radar Discharge

Instrumentation: Discharge – Radar Discharge

Power Input Minimum and

Maximum Velocity Direction Resolution Range Output Tools and Manuals

Radar DischargeCategory Description

Power Input 11-16V DCMinimum Velocity + 0.15 m/s

Maximum Velocity + 8 m/s

Direction + or -

Resolution 1mm/s

Range .3m to 20m

Output Compatible with data collection system

Tools and Manuals

Complete tool kit for installation and routine maintenance giving full details (number of pieces and type)

Instrumentation: Discharge - ADCP

Side Looking

Instrumentation: Discharge – ADCP Continued

Side LookingADCP- Side Looking

Category Description

ADCP TypeSide-looking ADCP for continuous measurement of discharge

Sampling Range 1.5-100m or as determined upon inspection site

Vertical Beam Range 0.2-15m

Horizontal Beam Width 1.4 degrees

Vertical Beam Width

3.8 degrees

Depth Range 0.3-10m of depth

Depth Accuracy The greater of +/-0.6 cm or 0.1% of measured depth

Voltage Input 12V

Accessories

All mounting equipment, conduit for a secure installation along the river bed. The bidder may suggest alternative solution that yields the same or higher accuracy and precision

Tools and Manuals

• Complete tool kit for installation and routine maintenance giving full details (number of pieces and type)• Full documentation (wiring diagrams) and maintenance instructions in English (1 copy per station)


Up LookingADCP- Up Looking


ADCP Typeupward looking ADCP for continuous measurement of discharge

Water Level Depth 0.2-5m

Water Level Accuracy +0.1% of measured level, +0.3 cm

Velocity Profiling Depth .03-5m

Velocity Range + 5m/s

Water Velocity Accuracy

+1% of measured velocity, +0.5 cm/s

Voltage Input 12V

Accessories

All mounting equipment, conduit for a secure installation along the river bed. The bidder may suggest alternative solution that yields the same or higher accuracy and precision

Tools and Manuals



Down LookingADCP- Down Looking


ADCP Type• Down-looking ADCP for manual measurement of discharge

Profiling Distance • 0.3-10m

Profiling Velocity • +/-20m/s

Velocity Accuracy • 0.25% of measured velocity

Velocity Resolution

• 0.001m/s

Depth Range • 0.3-10m of depth

Depth Accuracy • 1%

Depth Resolution • 0.001m

Discharge Distance • 0.3-10m

Computations • All performed internally

Accessories

• Floating platform for the ADCP• GPS for bottom tracking• All necessary tethers and taglines• Real-time display for instantaneous readings

Tools and Manuals


Instrumentation: Ground Water – Submersible Pressure Transducer

Instrumentation: Ground Water – Submersible Pressure Transducer

Cont.Item Specification

SystemDescription System will be a complete in-pipe solution with all components inserted within a pipe.

Water LevelRange 0-3mAccuracy ± 2 mmResolution ≤ 1 mmPrecision/Stability ± 1 mm/yearCalibration Ability to perform calibration in India Calibration equipment to be included in bid.

Cabling 3 m, ventedTemperature

Range 0 – 40 ˚ CAccuracy ± 0.5 ˚ CResolution ≤ 0.1 ˚ CPrecision/Stability ± 0.5 ˚ C/year Calibration Ability to perform calibration in India; Calibration equipment to be included in bid.

Internal Data LoggerData Storage Water level and Temperature from once per minute to once per day, user programmable.

Required to store one year of time-stamped data taken hourly for both temperature and water level.

Data Transmission GSM/GPRS from text and/or FTP (or SFTP) from once per hour to once hour to once per week.

GPS Built in GPS which can be programmed to sync the time and provide the location (latitude/longitude) of the data logger. The location will be required to be transmitted through the GSM/GPRS.

Communication Interface

IrDa or Bluetooth

Dimension ≤ 55 mm in diameterSpecial Feature Ability to set stage using a mobile device such as a PDA, Tablet, or Smartphone with a point

and click application (Fully describe the application to set stage)

Special Feature Ability to turn on/off GSM/GPRS application using a mobile device such as a PDA, Tablet, or Smartphone with a point and click application (Fully describe the application to turn on/off GSM/GPRS)

Special Feature Ability to change data transmission rates within the range of once per hour to once per week using a mobile device such as a PDA, TABLET, or Smartphone through an Application (APP). Fully describe the application to change transmission rates.

Special Feature Requirement to download data through IrDa or Bluetooth connection using a mobile device such as a PDA, TABLET, or Smartphone through an Application (APP). Fully describe the application to download data.

Data CommunicationModem GSM/GPRS compatible with frequencies available in Bangladesh (Provide data sheet or

example of compliance)Integration Modem will be integrated into the data logger enclosureAntenna Built in weatherproof with no external appearance of an antenna

PowerType Self-contained (no external charging device required)Voltage ≤ 12 V DCBatteries Commonly available in Bangladesh (i.e. 1.5V AA, AAA, C, or D cells)Operational Life Data Measurement/Logging and GSM/GPRS data communication 1 per hr, one year minimum

per set of batteriesEnvironmental

Protection All components IP-68Temperature 0 to 50 ˚ C operational / -10 to 70 ˚ C storageHumidty 0 to 100% operational and storage

System Water Level

o Same as Surface Water Submersible Pressure Transducer

Temperatureo Same as Surface Water Submersible

Pressure Transducer Internal Data Logger

o Data Storageo Data Transmissiono GPSo Communication Interfaceo Special Feature

Data Communicationo Modemo Integrationo Antenna

Powero Typeo Voltageo Batterieso Operational Life

Environmentalo Same as Surface Water Submersible

Pressure Transducer

Instrumentation:

Rainfall – Tipping Bucket

Instrumentation:

Rainfall – Tipping BucketRainfall (Tipping Bucket)

Item Specification

System

Description The tipping bucket is the preffered method of measuring rainfall

Rainfall

Intensity 0-500mm/hr

Accuracy 2% of reading for total precipitation

Signal Output Pulse counter

Calibration Ability to perform calibration in Bangladesh; Calibration equipment to be included in bid (one set for every 25 gauges).

Power

Voltage 12 VDC nominal

Other Requirements

Needs Tipping bucket base and collector: durable and rigid of cast metal, molded thermoplastic, or equivalent; galvanized iron sheet is not permitted.

Rim material: gun metal/brass/stainless steel or equivalent Rainfall shall be measured using a tipping bucket method and shall be

able to record rainfall cumulatively with the data collection platform. Rainfall sensor shall be of such a design that it operates reliably and

accurately under prevailing environmental and weather conditions The dissolved oxygen sensor shall be easy to dismount and replace in

the event of malfunction. Rain gauge is easy to operate and easy to calibrate. Minimum expected operational lifetime shall be 15 years or greater Bucket capacity: 1 mm equivalent rainfall. Focus on rainfall gauge is the accurate measurement of rainfall totals,

not necessarily rainfall rates. The use of a siphon system to normalize rainfall rate to achieve accurate total rainfall or software which will normalize varying rainfall rates and errors caused by changing rainfall rates is specified.

Contact system using dual reed switches with varistor protection. Insect covers on all openings. Collecting funnel diameter: close to 200 mm internal diameter The gauge will have leg adjusters to set the level horizontally Certified calibration test document shall be included with every gauge.

The calibration may be performed just prior to installation to assure accuracy of certified calibration test.

Ability to service tipping bucket gauge without re-leveling the gauge. Calibration kit for tipping buckets. (4 units) Necessary cables to connect precipitation gauge to data logger as

required. All wire runs between the tipping bucket and the data logger shall be

similarly designed. Bidder must submit and have approved a schematic of civil works that

assures a robust and secure installation prior to start of work.Tools and Manuals



System Rainfall

o Intensityo Accuracyo Signal Outputo Calibration

Powero Voltage

Other Requirementso Needso Tools and Manuals

Real-time Data Relay

Management

Maintenance and Training

module 7 mark heggli innovative hydrology, inc. consultant to the world bank expert real-time...

Documents

competition o

india o

precise o accurate

specific product o

specifications vendor

customer slide

customer needs vendor

precise slide