TPG Product Presentation.1

Report
Total Precipitation Gauge (TPG)
12/19/13
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
1
Overview
Sutron’s Total Precipitation Gauge (TPG) is a weighing bucket gauge with a built-in logger
designed for remote measurement of precipitation. The TPG can be equipped with multiple load
sensors for added redundancy and reliability. Sutron designed the TPG using technology proven in
the NWS Fischer Porter Rebuild kit program. Instead of refurbishing an ageing Fischer Porter
Gauge, many users will find it easier to simply replace with Sutron’s TPG.
TPG, Single Cell
TPG-0001-1
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
2
TPG Applications
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Hydro-Met monitoring systems
Municipal hydrology
Flood warning systems
Stormwater monitoring networks
Water balance models
Watershed and catchment basin studies
Climate change studies
Tropical and arctic monitoring
Tipping bucket upgrades
Replacement of Fischer/Porter gauges
CRN -- Climate reference network
AWS – automatic weather stations
ASOS/AWOS – Automated Weather Observing System (airports)
NWS Co-op modernization
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
3
TPG Features
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Measures all forms of precipitation:
drizzle, rain, sleet, snow, graupel, and
hail.
No moving parts – greater reliability and
lower maintenance (less clogging) than
tipping buckets.
High capacity – 36” (914mm)
precipitation – with option to expand
range to 72” or higher using auto-drain.
SDI-12 interface to Satlink, IridiumLink,
GPRS/CDMALink or other loggers
Built-in logger for data redundancy to
station logger, or can act as a standalone
logging sensor.
Low power consumption (<1ma standby)
for long life of battery.
NIST traceable factory calibration with
simple field verification/calibration.
Simple mounting on 4.5” OD pipe
Sutron Corporation
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Optional Wind Shield to increase
catchment of precipitation – studies show
that gauges without shields miss 25-50%
of solid precipitation in windy
environments.
Optional heater – eliminates capping of
the sensor in heavy snows or areas with
riming ice (requires line power).
Based on NWS Precip Gauge Upgrade
technology being used in over 1000
stations.
WMO compliant (manual 306, No 8)
Total Precipitation Gauge (TPG)
sutron.com
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TPG Specifications
• Measurements:
Precipitation, Precip rate, Internal Temp, Battery
• Automeasure Interval :
1 second to 24 hours
• Measurement Technique:
Precision hermetically sealed load cell
• Accuracy:
0.02" (0.6mm) -25°C to +60°C
• Range:
36" (914 mm) standard, >72" (1800 mm) with optional drain kit
• Enclosure:
UV Resistant ABS plastic Cover, 8" diameter aluminum inlet with
knife edge. Cast aluminum base with 4" pipe mount (for 4.5" OD
pipe)
• Communication Ports:
SDI-12, RS232
• Operating Temperature:
-40°C to +60°C
• Built-In Flash Memory:
4 MB (>300,000 readings)
• Clock Accuracy (at 0°C – 40°C):
20 seconds per month
• Power Requirements:
9-18 VDC
• Current Drain:
<1mA @12 VDC standby, 5ma active
• Communication Protocols:
MODBUS, SDI-12
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
5
TPG Operation Theory & Components
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8” diameter opening allows all types
precipitation to fall into the collection
bucket
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Optional heater keeps opening free from
snow and ice
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Oil layer reduces evaporation
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Antifreeze in bucket melts snow/ice
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Precision load cell weighs the
precipitation
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Electronics convert weights into
precipitation amounts, logs data, and
sends data to main station
logger/telemetry
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Optional drain kit empties bucket when it
precipitation reaches 70% capacity
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Mounts on 4.5” OD pipe
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
6
Windscreen Benefits
• WMO is testing the TPG in the Solid Precipitation Inter-Comparison
Experiment (SPICE).
• TPG3 with Alter shield catches 25-50% more than TPG1 without shield.
Windscreen Example
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
7
Client Portfolio – U.S.A
• USACE
• USGS
• National Park Service
• Bureau of Reclamation
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
8
Client Portfolio – International
• WMO
• Hoskin Scientific
• Anyone else?
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
9
Installation Examples
Master Station
Demo Station – Sutron Headquarters Rooftop, Sterling VA
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
10
Installation Examples
Gated Weather Station with TPG - Kabul, Afghanistan
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
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Installation Examples
TPG in Bulgaria
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
12
Installation Examples
???, Alaska
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
13
Installation Examples
WMO’s Solid Precipitation Inter-Comparison Experiment (SPICE) – Marshall, Colorado
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
14
TPG Models & Options
Models
TPG-0001-1
TPG, single cell
TPG-0003-1
TPG, triple cell
Options
TPG-DK
TPG Drain Kit
TPG-HK-120
TPG Heater kit, 120V, 200W
TPG-HK-240
TPG Heater kit, 240V,200W
TPG-HK-48
TPG Heater kit, 48V, 200W
TPG-WS-36-GA
TPG Windscreen - Galvanized
TPG-WS-36-SS
TPG Windscreen - Stainless Steel
TPG-WS-48 TPG
Windshield, 48” diameter
WS-24-EXT-GA
Windscreen Extension - Galvanized
WS-24-EXT-SS
Windscreen Extension - Stainless Steel
Sutron Corporation
Total Precipitation Gauge (TPG)
sutron.com
15

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