Environmental Measurement Systems

ENV-50 Series
$823 Basic Unit

• Accepts Weather Data
• Data Logging up to 1 Year
• Rugged, Weatherproof Case
• Complete Package with Sensors
• Interfaces to RS232 or RS485
• Windows Software Included

The ENV-50 series is a family of rugged logging devices for recording of weather & environmental data. Each module has non-volatile memory on-board for up to a year's worth of data storage. The durable, weatherproof case easily mounts on poles, beams, or roof tops using simple clamps.
The ENV-50 series modules interfaces to a PC via RS232 or RS485 ports. Windows software package is provided to graphically display, store, and manipulate data. For those desiring to write their own application, the interface is via simple ASCII commands.

ENV-50-WDT
Wind speed sensor - 3 cups 2" dia. on 0.5" dia. tube 16.5" high
Rated: 0 to 175 MPH
Accuracy: ±2%
Threshold: 1.7 mph Wind Direction - 8" pointer on 0.5" dia. S-shaped tube 12" high, provides 16 Compass points
Range: 0 to 360 deg
Deadband: 8 deg
Accuracy: ±2%
Cable to Connect Wind Sensors: 25' length
Thermistor Temperature Sensor on Case: -40 to 50°C (-40 to 122°F)
Accuracy: ±0.5°C
Calculated Wind Chill: -84 to 50°C ±1°C (-119 to 122°F)

ENV-50-HUM
Humidity Sensor
On-Board; 0-100% rh
Accuracy: ± 5%
Barometric Pressure Sensor
On-Board: 27.5 to 31.5 inches Mercury
Accuracy: ± 5%
Thermistor Temperature Sensor
on Case: -40 to 50°C (-40 to 122°F)
Accuracy: ±0.5°C

ENV-50-VOL
Analog Inputs: 4 individually jumper set 0.1, 1, 2.5, 10 V
Over Voltage Protection: ± 30 V One 16 bit event rate counter
Digital Inputs: 8
Digital Outputs: 8 All DIO are TTL/CMOS compatible
Update Rate: 1 sec

OPTIONAL RAIN GAGE
(for WDT or HUM)
Tipping bucket sensor with 25' cable
Resolution: 1/100" (.25 mm)
Dimensions: 10" Height (254 mm)
Rain Barrel Diameter: 8.5" (216 mm)

OPTIONAL INSTRUMENT SHELTER
Dimensions: 22" H x 14" W x 12" D (56 x 36 x 30 cm)

GENERAL SPECIFICATIONS
Comm Cable 62' (19 m) to 9 pin female for PC
Power Transformer: 12V 100mA connected to PC connector via 6' (1.8 m) cable
Data Storage: 32,000 data points
Log Interval: 1 min to 99 hr
Power Required: 7 to 18 VDC 12mA via 110Vac transformer supplied
Operating Temp: -40 to 70°C (-40 to 158°F)
Humidity: 0 to 100% RH
Case Dimension: 7" x 2.4" dia. (18 x 6 cm)

To Order (Specify Model Number)
Model No.	Price	Description
ENV-50-WDT	$873	Weather Monitor
ENV-50-HUM	839	Weather Monitor
ENV-50-VOL	823	Remote Monitor




Model No.	Price	Description
ENV-50-RAIN	$98	Rain Gage

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U.S.A. and Canada International Callers; Sales & Service; 203.359.1660

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