Specification_Draft_1.pdf

SALIENT CHARACTERISTICS

Item #1: Perforated Encoder Tape

The metal tape use with the studded pulley must be made of stainless steel, ½ inch in width, perforations at 2 ½ inches, and 100ft in length.

KEY FEATURES

- Stainless steel

- ½ inch in width

- 2 ½ inch perforations

- 100ft long

Item #2: Fluid Level Radar

The Radar Stage Sensor should deliver fully digital best in class accuracy of +/-2mm (0.007ft) through its complete standard measurement range. With a unique ability to set running average through an SDI-12 command, the Radar should customize to your environment. Reliably designed, IP66 rated with a rugged housing, the Radar should seamlessly connect with your existing DCP through SDI-12.

RELIABLE

Process temperature -40 ... 176 °F Waterproof materials Protection Rating IP66/IP68, Type 6p

ACCURACY

Standard Range [0.5m to 35m (1.64ft to 114.83ft)] +/- 2mm (0.007ft)

MEASUREMENT

Maximum Up to 15m (49.2ft)

BEAM FREQUENCY

Frequency (80GHz)

COMMUNICATION

Output SDI-12 (OPTIONAL 4-20mA)

POWER

Supply Current @ 12VDC <8mA in high power; <2mA in low power mode Voltage Requirements 10.6 to 16VDC

BEAM WIDTH AT 8°

Distance Width 3m (9.84ft) 0.52m (1.71ft) dra ft

6m (19.69ft) 1.05m (3.44ft) 9m (29.53ft) 1.57m (5.15ft) 12m (39.37ft) 2.1m (6.89ft) 15m (49.21ft) 2.62m (8.6ft) 20m (65.62ft) 3.50m (11.48ft) 25m (82.02ft) 4.37m (14.34ft) 30m (98.43ft) 5.25m (17.22ft) 35m (114.83ft) 6.12m (20.08ft)

Item #3: Submersible Pressure Transducer The pressure transducer will be high quality, robust, and highly accurate. It will be durable to withstand rugged environments. The sensor shall have an SDI 12 output, with an optional 4-20mA output with depth capabilities of 125ft.

SPECIFICATIONS

Pressure Ranges: Infinite between 0-3ft through 0-900ft water column.

Accuracy Pressure: + or – 0.1% FS Total Error Band.

Temperature Range: 0 to 100 degrees Fahrenheit.

Output: SDI 12, 4-20mA(optional)

Baud Rate: 1200

Voltage Input: 6 to 32VDC

Item #4: Non-Directional Antenna

The Antenna requires no assembly, and no aiming in most locations. Rugged by design, it is completely sealed for marine environments and dome-shaped for superior ice/snow shedding. Furthermore, it will be smaller, lighter and more durable than a Yagi.

Key Features:

One antenna replaces separate GOES and GPS antennas Cabinet top mounting eliminates exposed wiring Extremely rugged—nothing to break Quick to install and reliable to operate Option - Mounting Kit

Small and light 32 cm x 13 cm at widest (12.7″ x 5.2″) 396 g (Less than 1 lb.)

Sealed enclosure Reliable operation in harsh environments (ice and snow, marine environments).

Material is designed for prolonged exposure to sunlight, moisture and heat.

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Item #5: Evaporation Reader

The evaporation gauge is used to monitor evaporation and should be made of material to withstand harsh environmental conditions. The sensors output shall be SDI 12 or analog. The sensor should be simple to install and compatible with data collection equipment.

SPECIFICATIONS

WATER INLET PORT

½ inch NPT female coupler

ACCURACY

+ or – 0.25%

POWER

Voltage Input @ 5VDC

OUTPUT

Output SDI-12 or Analog 30’ or greater, 24 AWG, 3 conductor, shielded, Cable

OPERATING TEMPERATURE

-40 TO 140 degrees Fahrenheit

Item #6: Anemometer

The anemometer must be made of robust materials to be able to withstand extreme weather conditions, particularly low temperatures, and high winds. The electrical output can be SDI 12 or analog. The anemometer must come with a mounting bracket and powered by 12VDC.

SPECIFICATIONS

Range: Wind Speeds up to 120mph.

Accuracy: Wind speed; 1% of reading Wind direction; + or – 3 degrees

Threshold: Propeller; 2.2mph Vane; 2.2mph

Signal Output: SDI 12 or Analog

Power Requirement: 15VDC max

Operating Temperature: -50 to 60 degrees Celsius dra

Item #7: Radiation Shield The radiation shield will be constructed of high quality, and robust material.

Key Features

- Will accommodate temperature sensors up to 26 mm (1") diameter

- Will be UV stabilized white thermoplastic plates

- Will have an aluminum mounting bracket fitting a vertical pipe 25-50 mm (1-2") diameter

The solar radiation shield will be comprised of six UV resistant louvers, providing effective protection from direct or reflected sunlight and rainfall, while ensuring good ambient airflow to the sensor.

SPECIFICATIONS

Radiation errs: 0.4°C (0.7°F) RMS @ 3 m/s (6.7 mph) 0.7°C (1.3°F) RMS @ 2 m/s (4.5 mph) 1.5°C (2.7°F) RMS @ 1 m/s (2.2 mph)

Construction: UV stabilized white thermoplastic plates Aluminum mounting bracket, stainless steel U-bolt clamp

Dimensions: 12 cm (4.7") diameter x 27 cm (10.6") high

Mounting fits vertical pipe 25-50 mm (1-2") diameter

Weight/shipping: 0.7 kg (1.5 lb.)/1.4 kg (3 lb.)

Item #8: Turbidity Meter/Probe The turbidity probe should be high quality, robust, and highly accurate. It must be durable to withstand rugged environments. The probe should use a 90-degree infra-red technique and contain an automatic lens cleaner/wiper. The probe shall have an SDI 12 output and able to operate in depths up to 10ft of water.

SPECIFICATIONS

Accuracy: + or – 0.1% at 25 degrees Celsius.

Temperature Range: 0 to 100 degrees Fahrenheit.

Output: SDI 12, 4-20mA(optional) Voltage Input: 8 to 30VDC

Item #9: Air Temperature Sensor The Temperature sensor will be high quality, robust and accurate. Will operate at a range of -40°C to +60°C.

Key Features

- SDI-12 output

- Range of measurement will be -40° C to +60°C

- Will operate in a 12-volt system.

- Will be mountable in a radiation shield by mechanical means.

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The internal electronics are housed in an anodized aluminum tube, sealed at both ends by waterproof O-rings. The humidity sensor is protected from airborne contaminants and insects by a replaceable filter.

A protective cap is used to protect the humidity wafer and is made of a porous high-density polyethylene filter material. Polyethylene is hydrophobic so it does not attract or retain water—it will not cause humidity reading errors when the humidity drops from a high to a low RH value. The filter also provides protection for the humidity wafer from dust and other airborne particles due to its small pore size (35 microns), affording a minimum of 12 months between servicing.

SPECIFICATIONS

TYPE: Encapsulated thermistor

OUTPUT: SDI-12

RESOLUTION: 0.1ºC

ACCURACY (0 to 60°C): ±0.1ºC OPERATING TEMPERATURE RANGE: -40°C to +60°C (-40°F to +140°F) OPERATING HUMIDITY RANGE: 0 to 100% RH OPERATING VOLTAGE: 9.6 to 20 VDC OPERATING CURRENT: < 1mA MEASUREMENT SPEED: < 50 ms

FILTER

High Density Polyethylene Pore size: 35 microns Hydrophobic dra