Meteorology Sensors

Marine Wind Monitor

Model 05106

The Wind Monitor MA is an accurate and reliable wind sensor specifically designed for the rigors of the marine environment.

The wind speed sensor is a four blade helicoid propeller. Unique transducer produces a pulse signal without electrical contacts or slip rings. The wind direction sensor is a durable molded vane. Vane angle is sensed by a precision potentiometer housed in a sealed chamber. All materials are carefully selected for corrosion resistance and maximum durability in the harsh marine environment. Stainless steel bearings are used throughout. Special waterproof lubricant further enhances reliability. The instrument mounts on standard 1 inch pipe. Separate signal conditioning circuits are available to provide voltage or current signals when needed (see below). Each is supplied in a weatherproof junction box with mounting hardware.

Wind speed: 0-100 m/s (224 mph)
Azimuth: 360° mechanical, 355° electrical (5° open)
Wind speed: ±0.3 m/s (0.6 mph) or 1% of reading
Wind direction: ±3 degrees
Threshold:* Propeller: 1.1 m/s (2.4 mph) Vane: 1.1 m/s (2.4 mph)
Signal Output:
Wind speed: magnetically induced AC voltage, 3 pulses per revolution. 1800 rpm (90 Hz) = 8.8 m/s (19.7 mph)
Azimuth: analog DC voltage from conductive plastic potentiometer – resistance 10K Ω , linearity 0.25%, life expectancy – 50 million revolutions
Power Requirement:
Potentiometer excitation: 15 VDC maximum
Overall height: 37 cm (14.6 in)
Overall length: 55 cm (21.7 in)
Propeller: 18 cm (7 in) diameter
Mounting: 34 mm (1.34 in) diameter (standard 1 inch pipe)
Sensor weight: 1.0 kg (2.2 lbs)
Shipping weight: 2.3 kg (5 lbs)

MODEL 05603C, Wind Sensor Interface (0-5 VDC outputs)
Power Requirement: 8-24 VDC (5 mA @ 12 VDC)
Operating Temperature: -50 to 50° C
Output Signals: 0-5.00 VDC full scale

MODEL 05631C, Wind Line Driver (4-20 mA outputs)
Power Requirement: 8-30 VDC (40 mA max.)
Operating Temperature: -50 to 50° C
Output Signals: 4-20 mA full scale

Vaisala HUMICAP® Humidity and Temperature Probe HMP155

Technical Specifications


Relative humidity measurement


​Measurement range ​0 ... 100 % RH

​Accuracy (incl. non-linearity, hysteresis and repeatability) at

​     +15 … +25 °C

​     (+59 … 77 °F)

​For other temperatures, please see the the brochure ​±1 % RH (0 ... 90 % RH), ± 1.7 % RH (90 ... 100 % RH)

​Recommended humidity sensor ​Vaisala HUMICAP® 180R

Temperature measurement


​Measurement range ​-80 ... +60 °C (-112 ... +140 °F)

​Accuracy at +20 °C

​     voltage ​±0.17 °C

​     RS485 ±0.12 °C

​     passive resistive output ​according to IEC751 1/3 Class B

​Temperature sensor ​Pt100 RTD

​Optional additional T probe

Other variables
dewpoint/frost point temperature
wet bulb temperature, mixing ratio

Operating environment



​   operation ​-80 ... +60 °C (-112 ... +140 °F)

​    storage ​-80 ... +60 °C (-112 ... +140 °F)

Inputs and outputs


Operating voltage ​7 ... 28 VDC


​    voltage output ​0 ... 1V, 0 … 5 V, 0 … 10 V

​     resistive Pt100 (4-wire

​    RS485


Connection cables
Material (housing)
Housing classification

3.5, 10, and 30 m



For Balance Measurement of Solar & Reflected Radiation

The Middleton CN1-R Net Pyrradiometer measures the net total radiation flux (solar, terrestrial, and atmospheric) downward and upward through a horizontal surface. It is suitable for solar energy studies in agriculture and meteorology.
Performance Specification
Response time
15s (1/e); 45s (95%)
Non-stability (per year)
+2%, -1.0%
Cosine response (at 80° inclination)
upwards and downwards sensitivity variation
shortwave and longwave sensitivity variation
Temperature coefficient
Weatherproof and durable.
Matched upward and downward response.
Fully sealed construction for low-maintenance.
Protective polythene domes have minimal selective absorbency.

Middleton Solar CN1-R Net Pyrradiometer Detailed Specification

Thermopile sensor has flat spectral response.
Diagonal white lines on the sensor selectively reflect shortwave radiation (the lines are transparent to longwave) and thus balance the spectral response.
Semi-rigid polythene domes protect the sensors from air temperature fluctuations.
Domes inflated by blowing into a check valve in the handle and remain inflated indefinitely.
The handle contains silica gel to prevent internal condensation
(the desiccant can be inspected through a window in the handle).
User's Guide and Calibration Certificate included.
General Specification
Viewing angle
4π steradians
25μV/W.m-2 (typical)
Spectral range
0.3 to 60μm
Operating temperature
-35 to +60°C
Transmissivity of dome (average)
Sensor thermopile
38x38mm; 250 junction copper-constantan
Output lead
2m, 2 core
Shipping size & weight
95dia x 880mm; 1Kg
Orange silica gel, non-toxic (in handle)
Construction: head
cast epoxy resin; integral vent to handle
chrome plated brass
anodised aluminium
dome (semi-rigid)
0.4mm polythene film
The CN1-R can be used in conjunction with the Middleton Solar EQ16/E Pyrano-albedometer for applications requiring separation of the shortwave component (0.3 to 3μm) from the total net radiation signal.
Optional accessories are a Signal Amplifier and a hand-operated Dome Inflator.


The Middleton EQ08-S is a precision pyranometer for the measurement of global solar irradiance on a plane surface. It exceeds the international accepted specifications for a high quality pyranometer. The EQ08-S incorporates a second generation precision thermoelectric sensor that has exceptionally low directional error without compromise to signal strength or response time. The EQ08-SE version has an in-built amplifier to give a millivolt output for easy signal measurement.

Performance Specification

ISO9060 Secondary Standard

EQ08-S, SE (typical)

Response time (to 95%)

< 15s


Zero off-set: a) 200 W.m-2

+ 7 W.m-2

< + 6 W.m-2

                  b) 5K.h-1

± 2 W.m-2

< ± 1 W.m-2

Non-stability (per year)

± 0.8%

< ± 0.5%

Non-linearity (100-1000W.m-2)

± 0.5%

< ± 0.5%

Directional response (w.r.t. 1000 W.m-2)

± 10 W.m-2 (30-80°)

< ± 10 W.m-2 (0-85°)

Spectral selectivity (0.35 to 1.5µm)

± 3%

< ± 2%

Temperature response (for 50K interval)

± 2%

< ± 0.5%

Tilt response (0-90°)

± 0.5%

< ± 0.2%


Marine grade aluminium, hard anodized for corrosion resistance.

Bubble level on top of instrument for easy viewing.

Fully sealed construction for low-maintenance.

Strong output signal.




The Environmental Characterization Optics (ECO) series of single channel fluorometers
delivers both high resolution and wide ranges across our entire line of parameters using
14 bit digital processing. The ECO series excels in biological monitoring and dye trace
studies. The potted optics block results in long term stability of the instrument and the
optional anti-biofouling technology delivers truly long term field measurements.

Chlorophyll-a fluorescence is an indicator of active phytoplankton biomass and chlorophyll concentrations. This measurement is used for tracking biological variability and abundance in the water column.
Colored Dissolved Organic Matter
The CDOM ECO allows you to obtain CDOM fluorescence across a wide range of environments, from mangrove swamps to oligotrophic blue water.
Ships with ECOView Host software
Optional integrated Bio-wiper™ and/or copper faceplate for anti-fouling
Optional integrated self-logging; 1 Mb memory
Full ocean depth model available
Uranine (fluorescein) & Rhodamine
The ideal combination of linearity, sensitivity and range for dye studies.
Detection limits in parts per trillion allows for precise patch determination and first arrival timing as well as reducing the necessary initial dye concentration.
Phycoerythrin & Phycocyanin
ECO phycobilin fluorometers have the high resolution necessary for early detection of either blue-green (phycocyanin) or brown (phycoerythrin) algae. These fluorometers are relative measurement instruments and should be calibrated by cell counts for a particular water mass.
WET Labs, Inc. • 541-929-5650 • Fax 541-929-5277 • ECO Fluorometer
Rev. W 1/21/09
ECO FL Specifications
• FL(RT)—Provides analog or RS-232 serial output with 16,300-count (approximate) range. This unit
provides continuous operation when powered.
• FL(RT)D—Provides the capabilities of the FL(RT) with 6,000-meter depth rating.
• FL—Provides the capabilities of the FL(RT) with periodic sampling.
• FLS—Provides the capabilities of the FL with an integrated anti-fouling Bio-wiper™.
• FLB—Provides the capabilities of the FL with internal batteries for autonomous operation.
• FLSB—Provides the capabilities of the FLS with internal batteries for autonomous operation.
Mechanical Electrical
Diameter 6.3 cm Digital output resolution 14 bit
Length 12.7 cm RS-232 output 19200 baud
Weight in air 0.4 kg Analog output signal 0–5 V
Weight in water 0.02 kg Internal data logging optional
Pressure housing Acetal copolymer Internal batteries optional
Connector MCBH6M
Optical Bio-wiper™ cycle 140 mA
Chlorophyll-a ex/em: 470/695 nm Input 7–15 VDC
Sensitivity 0.01 >g/l Current, typical 80 mA
Range, typical 0.01 to 125 >g/l Current, sleep 85 >A
CDOM ex/em: 370/460 nm Data memory 90,000 samples
Sensitivity 0.09 ppb Sample rate to 8 Hz
Range, typical 0.09 to 500 ppb Anti-fouling bio-wiper™ optional
Uranine ex/em: 470/530 nm
Sensitivity 0.07 ppb Environmental
Range, typical 0.12–230 ppb Temperature range 0–30 deg C
Rhodamine ex/em: 540/570 nm Depth rating 600 m (std)
Sensitivity 0.01 ppb Depth rating 6000 m (deep)
Range, typical 0.01–230 ppb Pressure/temperature sensor optional
Phycoerythrin ex/em: 540/570 nm
Sensitivity 0.01 ppb
Range, typical 0.01–230 ppb
Phycocyanin ex/em: 630/680
Sensitivity 0.15 ppt
Range, typical 0.15–400 ppt
Linearity (all) 99 % R2

Dissolved Oxygen

The OxyGuard Standard Probe - the probe that revolutionised oxygen monitoring 

Click for data sheet

The probe that you can purchase today is even better than the probe introduced in 1987 that helped revolutionize fish farming and make modern aquaculture the industry it is today.Today's OxyGuard Standard Probe is hermetically sealed. If needed you can open it to replace the membrane and renovate it completely, but this should not be needed for many years.

The measurement stability of the OxyGuard Standard Probe is also very high indeed. A probe measuring in air will maintain accuracy even when subjected to a sudden 20 degree celcius temperature change. The sensitivity of a probe measuring in clean air at room temperature will remain the same for at least 3 years. This proves that the OxyGuard probe is not, like some other probes, affected by "ageing".

OxyGuard believe that the OxyGuard Standard probe is more accurate, needs less attention and maintenance and has a lower total cost of ownership than any other oxygen or dissolved oxygen probe offered to the aquaculture industry today.