Coastal ZENO User manual

820 First Avenue South Seattle, WA 98134 USA www.CoastalEnvironmental.com
[phone] [phone] Fax: [phone] ISO 9001:2008 Certified
ZENO®Weather Station
Manual
May 2012
©2012 Coastal Environmental Systems, Inc. P/N: 0302-116-017, Rev: 0

ZENO®Weather Station Manual
2
To check for additional technical notes, please visit our Technical Notes web page:
http:www.coastalenvironmental.com/service-technical-notes.shtml
Table of Contents
1. Set-Up Guides ...........................................................................................................................4
2. ZENO®3200 Weather Station.................................................................................................9
2.1 Overview .............................................................................................................................9
2.2 ZENO®Electronics .............................................................................................................9
2.3 Power Source/Supply ........................................................................................................10
2.4 Memory/Data Storage/Display and/or Telemetry.............................................................10
3. How and Where to place a Weather Station and the Sensors:...........................................11
3.1 Wind Speed and Direction ................................................................................................11
3.2 Temperature and Relative Humidity .................................................................................11
3.3 Precipitation ......................................................................................................................11
3.4 Pressure .............................................................................................................................12
3.5 Solar Radiation..................................................................................................................12
3.6 Soil Temperature ...............................................................................................................12
3.7 Visibility............................................................................................................................12
3.8 Cloud Height .....................................................................................................................12
3.9 Lightning/Thunderstorm Detection...................................................................................12
3.10 Ice Accumulation ..............................................................................................................13
3.11 Gamma Radiation..............................................................................................................13
4. Weather Station Assembly.....................................................................................................13
4.1 Locate the Tower Site and Assemble the Tower Base......................................................13
4.2 Attaching the NEMA Box.................................................................................................14
4.3 Wind Monitor Alignment Guide.......................................................................................15
4.4 Attach the Sensors to the Tower .......................................................................................17
4.5 Locate and Install the Ground Sensors..............................................................................17
4.6 Earth Grounding the Tower...............................................................................................18
4.7 Attaching Sensor Cables to ZENO®.................................................................................18
4.8 Attaching the Battery ........................................................................................................18
5. Routine Maintenance .............................................................................................................19
6. Connecting to the ZENO®– Overview .................................................................................20

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ANNEX 1. Procedure to Download Data Files.......................................................................23
ANNEX 2. Procedure to Change the Sample Period .............................................................25
ANNEX 3. Procedure to Update the Clock.............................................................................27
ANNEX 4. Procedure to Upload a Configuration File ..........................................................29
ANNEX 5a. Procedure to Download a Configuration File .....................................................32
ANNEX 5b. Procedure to Download a Configuration File using X-Modem .........................36
ANNEX 6. Procedure to Verify Barometer Accuracy...........................................................39
ANNEX 7. Procedure to Enter Elevation Offset for Pressure Sensor .................................41
ANNEX 8. Procedure to Enter Magnetic Deviation for Wind Direction.............................43
Table of Figures
Figure 6-1: ZENO®3200................................................................................................................20

820 First Avenue South, Seattle, WA 98134 Tel: [phone] Fax: [phone] www.CoastalEnvironmental.com
ZENO® Permanent Weather Station Set-Up Guide 1
See alignment sheet
for correct alignment
This is a generic overview of a permanent ZENO®tower
installation. Your system may not include all of the
components listed, or may have different components. Please
refer to the installation documentation
provided for each component in
your system or contact Coastal for
assistance.
TOWER
1. (Detailed tower assembly instructions
can be found in the Tower Installation
Package.) Attach two legs of the bottom
tower section to the “front” anchors. Lay
the tower base on its side.
2. Align the top two tower sections end to end in line with the
tower base. Connect the sections together, and tighten.
Temperature
and Humidity
Sensors
Rain
Gauge
Lightning
Rod
Wind Sensor
ZENO®
Enclosure
typically houses
the data logger,
power supply,
back-up battery
and barometer.
1
2a
2b 2c 2d
2e 2f
4

GROUNDING ROD
3. Approximately two feet from the tower
base, insert the grounding rod into the
earth until approx. six inches remain above
ground.
4. Attach a grounding wire to the tower base
with the provided clamp. Connect the other
end to the grounding rod, leaving enough
slack that the tower can be tipped down for
maintenance. If preferred, the ground rod
can be driven below the surface.
LIGHTNING ROD & MOUNT
5. Attach the lightning mount to the top of
the tower, just below the rst horizontal
bar, using two u-bolts. Secure a short
grounding wire to one of the u-bolts and
then to an adjacent tower leg.
6. Install the Lightning Rod on the mount.
The top of the Lightning Rod should be
higher than the top of the Wind Sensor.
WIND SENSOR
7. Mount the one-inch extension pipe to the top of the tower, then attach the Wind Sensor to the
top of the extension pipe. See the Wind Sensor Alignment sheet to correctly align your Wind
Sensor (when the tower is upright).
TEMPERATURE & HUMIDITY SENSORS
8. Attach the Temperature and Humidity Sensor assembly to the tower base two meters above
ground.
SOLAR RADIATION SENSOR
9. The solar radiation sensor should be installed on the SOUTH* side of the tower, slightly above the Temperature
and Humidity Sensor assembly, and in a manner so that it is never shaded by the tower or other sensors.
(*NORTH side in the southern hemisphere)
820 First Avenue South, Seattle, WA 98134 Tel: [phone] Fax: [phone] www.CoastalEnvironmental.com
ZENO® Permanent Weather Station Set-Up Guide 2
8
7d7c7b7a
6b6a5
4b4a3a 3b
ZENO® Permanent Weather Station Set-Up Guide 2
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820 First Avenue South, Seattle, WA 98134 Tel: [phone] Fax: [phone] www.CoastalEnvironmental.com
ZENO®ENCLOSURE
10. Bolt the two mounting plates to the top and bottom of the ZENO®enclosure.* Install the
enclosure to the tower base at eye level using four u-bolts. (*Rotate the mounting plates 180
degrees to t narrower towers.)
11. Attach one end of a small grounding wire to the base of the ZENO®enclosure and the other
end to an adjacent tower leg.
RAINFALL SENSOR
12. Mount the Rain Gauge to a sturdy support, with nothing over the top. Remove the top funnel
from the sensor and verify that the tipping
mechanism moves freely. Remove any
device used to hold the tipping mechanism
in place during shipping.
OTHER SENSORS
13. Carefully insert or bury the Soil
Temperature Sensor in the area of soil to
be monitored and attach the cable to the
enclosure.
14. Fully insert the Soil Moisture Sensor
prongs into the area of soil to be monitored
and attach the cable to the enclosure.
15. Attach the Solar Panel to the tower base above the ZENO®enclosure so that it is facing
toward the Sun (SOUTH*). *In the southern hemisphere, align the Solar Panel to face
NORTH.
ATTACH WIRES TO TOWER
16. Run all sensor wires down the nearest tower leg to the ZENO®enclosure, Using cable ties,
attach every six to eight inches. When installing cables for power, communication, rain gauge
or any other connection which is separate from the tower: leave enough slack in the cable to
allow the tower to be lowered properly.
16
12c12b12a
11
10a 10b 10c 10d
ZENO® Permanent Weather Station Set-Up Guide 3
6

RAISE THE TOWER
17. Once all sensors are attached and the wires are secured to the
tower, slowly raise the tower. While one person steadies the
tower, insert the nal bolts in the third tower leg and secure.
FINISH WIRING
18. Run all cables through the gasket feedthroughs and attach to
the ZENO®as shown in the wiring diagram. Tighten gasket
feedthroughs by hand.
820 First Avenue South, Seattle, WA 98134 Tel: [phone] Fax: [phone] www.CoastalEnvironmental.com
18a 18b
17d
17c17b
17a
ZENO® Permanent Weather Station Set-Up Guide 4
7

ZENO® Portable Weather Station Set-Up Guide
820 First Avenue South, Seattle, WA 98134 Tel: [phone] Fax: [phone] www.CoastalEnvironmental.com
FACE SOUTH*
Place
1.5 METERS
above
ground
Wind Sensor
Solar
Radiation
Sensor
In Northern Hemisphere
Net Radiometer
Sensor
ZENO®
Enclosure
also holds the
Barometric
Pressure
Sensor
Soil Moisture
Sensor
Rainfall
Sensor
Soil
Temperature
Sensor
Humidity and
Temperature
Sensors
1. Select a level piece of ground about 4 meters in
diameter.
2. Assemble the lower tower section: Insert the three
legs into the tower base and secure with a turn
clockwise, forming a tripod. Place the tripod in the
center of the 4-meter diameter area.
3. Attach the ZENO®3200 Enclosure to the tower
base using the clamps on the rear of the enclosure
as shown.
4. Mount the Wind Sensor on the extension pole for the
top of the tower, then attach the extension pole to the
top of the tower base. The face of the small junction
box on the Wind Sensor should face due South*.
5. If you have one, mount the Net Radiometer Sensor
on the extension pole so that the sensor and rod
point due South*, with the sensor facing upward.
The sensor must be mounted 1.5 meters above
the ground.
6. If you have one, attach the Solar Panel below the
Net Radiometer Sensor so that it is facing toward
the Sun.
7. Attach the Humidity and Temperature Sensors
assembly just above the Net Radiometer Sensor.
8. If you have one, attach the Solar Radiation Sensor
on the tower extension pole several centimeters
above the Humidity and Temperature Sensors
assembly as shown. The sensor must point
South* and face upward.
9. If you have one, carefully insert or bury the Soil
Temperature Sensor in the area of soil to be
monitored and attach the cable to the enclosure.
10. If you have one, fully insert the Soil Moisture Sensor
prongs into the area of soil to be monitored and attach
the cable to the enclosure.
11. If you have one, place the Rainfall Sensor on level
ground near the tower, but with nothing over the top.
Remove the top funnel from the sensor and verify that
the tipping mechanism is able to move freely. Remove
anything used to hold the tipping mechanism in place
during shipping.
12. Run all Cables through the Gasket Feedthroughs
and attach to the ZENO®as shown in the Wiring
Diagram. Tighten gasket feedthroughs by hand.
*In the Southern Hemisphere, align these sensors
to FACE NORTH.
4
8
7
5
3
8

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2. ZENO®3200 Weather Station
This is a generic manual for most 2, 3 and 10 meter ZENO®Weather Stations.
2.1 Overview
A ZENO®weather station can serve many purposes, come with a variety of sensors and perform a
number of functions depending on the customers’ needs and uses.
Essentially your ZENO®weather station consists of the following components:
1. Sensors (to take measurements of the environment)
2. ZENO®electronics to process/store/forward or compute the measurements from the
sensors
3. A Power Source/Supply
4. Memory/storage of data, display of data and/or one or both of the former plus
sending the data somewhere else (telemetry).
Your station may also include a tower or other peripheral accessories.
The sensors may consist of basic to exotic depending on your application and need. Below is a
partial listing of the most common sensors:
•Wind speed and direction
•Temperature and Relative Humidity (Dew Point can be calculated)
•Barometric pressure (as well as altimeter settings)
•Rainfall/Precipitation amount
•Solar radiation (of various types; there are many)
•Soil Moisture
•Soil Temperature
•Visibility
•Cloud Height
•Lighting/Thunder storm detection
•Freezing Rain
•Ice Accumulation
•Gamma Radiation
2.2 ZENO®Electronics
The ZENO®electronics carries out the following functions:
•controlling and providing power to all attached sensors;
•gathering data continuously for all connected sensors (18 bit analog resolution);

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•carrying out self-tests to monitor the condition of the sensors and electronics for
possible problems;
•processing gathered data;
•checking the data for any alarm conditions;
•prepare data for immediate retrieval by a PC computer by means of cellular telephone
interface (optional);
•logging historical data for later retrieval.
The ZENO® 3200 has an extremely robust design. Each input and output, including the serial
communication ports, has lightning protection. Extensive hardware and software self-checks are
carried out. Surface mount technology is used to give a high degree of resistance to mechanical
and thermal shocks. This is a system that can be installed in remote sites with confidence.
2.2.1 ZENO®3200 Software
All of the features contained in the ZENO® 3200 software are easily modified. The user can
change sample periods, adjust the system clock, and even test individual sensors – one can
actually obtain analog voltage outputs, or isolate the output of a single sensor using the
ZENO® 3200 test menu. The menus are password-protected to avoid accidental or unauthorized
changes of the ZENO® 3200’s configuration. A true real-time clock achieves multi-tasking that
the ZENO® 3200 samples and communicates simultaneously.
2.3 Power Source/Supply
Typically your weather station will be supplied with either an AC mains power supply, with or
without a back-up battery, or a solar power/charging system.
2.4 Memory/Data Storage/Display and/or Telemetry
The ZENO®can come with a large amount of data storage. This may be used if there is no
method of communication between your weather station and you (a PC). It is not recommended to
rely on storing large amounts of data over long periods of time as your only source of data storage.
A display built into the enclosure can be ordered if you wish to or have someone view the data on
site. A push button activates the display, which will shut off automatically after a set period of
time.
If you have telemetry communications with your ZENO®, you will likely also have Coastal’s
INTERCEPT®software that will contact the station or stations automatically and download the
data at set periods of time.
There are several communications devices commonly used:
•Radio (VHF, UHF or Spread Spectrum)

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•Telephone dial-up
•TCP/IP address
•GPRS
•CDMA
•Cell phone
•Cable (copper or fiber optic)
•Satellite
•Special forms
More details on these will be in the specific device manual that you have ordered.
3. How and Where to place a Weather Station and
the Sensors:
The site should be representative of the general area and be away from obstructions such as
buildings and trees where possible1,2
3.1 Wind Speed and Direction
.
Wind sensors should be located over open level ground where possible. The wind sensor should
be a distance of at least ten times the height of nearby buildings, trees, or other obstructions (so if
a building is 10 meters high – the weather station would ideally be 100 meters away). For poles
and towers you should be at least 2 times the diameter away.
There are two recommended heights, but you may have reason to select another. The two
standards are 3 meters and 10 meters.
3.2 Temperature and Relative Humidity
The sensor should be housed in a naturally ventilated radiation shield. For the most accurate
measurement under ALL conditions you should consider a motor aspirated shield, however they
are not required for most uses. Avoid where possible large heat sources or shade. The standard
height is 1.25 to 2.0 meters.
3.3 Precipitation
Tipping buckets, weighing gauges or other precipitation measurement sensors should be a
minimum of 30 cm off the ground. It is not ideal to attach them via a support arm to the tower but
1NWS & NOAA (2010). Operations and Services Surface Observing Program (Land) NWSPD
10-13. Also NWS/NOAA website for Proper Weather Station Siting:
2WMO (1983). Guide to Meteorological Instruments and Methods of Observation. World
Meteorological Organization No. 8, 5th edition, Geneva Switzerland.

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if you can mount it on the side of prevailing wind it is acceptable. It should be no higher than 1
meter.
3.4 Pressure
The location of the pressure sensor is inside of the enclosure and then it is vented to the air so that
it can measure the air pressure. Since the enclosure is usually mounted at a height that is
convenient to access it – this is an acceptable location for the pressure sensor. If your system is
being used for aviation it will be important to know exactly how high off the ground the sensor is
and an offset be entered in the firmware (ZENO®) or the software (Aviation INTERCEPT®).
3.5 Solar Radiation
Solar radiation sensors should be mounted where they will always be exposed to the sun and away
from any reflective or shiny surfaces (like enclosures or buildings, windows, etc.). The height is
not critical for the accuracy of the measurement but typically solar radiation sensors are mounted
at 3 m or less so they are easy to level and clean.
3.6 Soil Temperature
The area of soil to measure soil temperature should be at least 1 square meter and level.
Standard measurement depths:
5.0 cm, 10.0 cm, 50.0 cm, 100.0 cm
3.7 Visibility
The visibility sensor should be mounted in a location free from reflections and as representative of
the area you wish to measure as possible. It measures the visibility between the two sensor heads
(about 2-3 feet). It is not “outward looking” so consider this when locating your tower. It should
be 2 to 3 meters from the ground, however you should also consider snow depth if you have snow
in your location. It is also a sensor with windows and optics so you will want to be able to reach
and clean the windows, the frequency of such depending on your location (dusty, industrial, etc.)
3.8 Cloud Height
The cloud height sensor should be mounted pointing away from the tower and any other
obstructions that may be in its “line of sight” to the sky. You should also consider maximum
snow depth if your location has snow.
3.9 Lightning/Thunderstorm Detection
Coastal offers several lightning/thunderstorm sensors and so you should follow the siting
instructions provided with the sensor you ordered. In general you want it at least twice the width
of the tower away from the tower, or on a separate pedestal some distance from the tower. It may
have difficulty “seeing” some strikes that would be “behind” the tower so consider this when
choosing a location and distance.

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3.10 Ice Accumulation
Typically this is located at 3 meters, but you should also consider what it is you are looking for ice
to accumulate on. If for example you want to know when ice will accumulate on overhead power
lines – then it should be mounted as close to that height as possible as the temperature and thus ice
formation can vary widely with height.
3.11 Gamma Radiation
This will usually be mounted in an enclosure, which already has a place on the tower. You will
need to check the data when starting up the station to ensure you have not inadvertently placed the
sensor near some source of gamma radiation. It should also be noted that other sources could be
present during maintenance (a glow in the dark watch or other source).
4. Weather Station Assembly
The system is assembled using the following steps:
•Locate the tower site and assemble the tower (if ordered)
•Attach the NEMA box to the tower.
•Assemble and install sensors on the tower.
•Locate and install any ground sensors or other sensors that will not be attached to the
tower.
•Connect the sensors to the ZENO®.
•Install the battery, connect to mains power or install the solar panels and charging
system.
•Test the system.
•Secure the site.
Each of these steps will be described in the following sections.
4.1 Locate the Tower Site and Assemble the Tower Base
•If your weather station has a radio, the tower must be sited where there is a direct line
of sight to the base station antenna. The radios for this system require line of site (i.e.
no obstructing hills or buildings) for successful operation.
•Determine the location for the tower or existing tower.
•Assemble the tower.

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4.2 Attaching the NEMA Box
The NEMA box will come pre-assembled with the ZENO® 3200, and if required the radio and
barometer installed. The solar power panel, and some sensors may already be connected. Do not
open the box yet especially if the weather is inclement and there is a possibility of getting moisture
inside the box.
•Attach the NEMA box containing the ZENO®box, radio, barometer and to the tower.
Use the U-bolts and the spacers provided to avoid damaging the fiberglass box. The
NEMA box is mounted on the base of the tower with the bottom of the box at a
convenient location above the ground.
•To ground the NEMA box/chassis, attach the metal clamp to the top of the screw in
the tie down stake (this is the one that you secured the tower legs to using the manila
rope). Connect one end of the copper wire to the chassis ground lock on the bottom of
the NEMA box and the other end to a properly grounded ground rod.

Wind Sensor Alignment
820 First Avenue South, Seattle, WA 98134, USA Tel: [phone] Fax: [phone] www.CoastalEnvironmental.com
Wind Sensors
Alignment with North
A wind sensor must first be aligned to North in order to report directions accurately. In most cases you will
want to align the wind sensor with TRUE NORTH. TRUE NORTH is different from where the compass
points – you add or subtract the offset (called declination) from the compass heading. First, find the
compass north (called magnetic north) and then add or subtract the declination degrees for your
geographic location from your magnetic compass measurement. (You can look this up on the Internet or
ask us.)
Each wind sensor has its own marking method to tell you which way to line it up. Our most common wind
sensors are listed below. If you have one different than those shown, please contact us for this
information.
NOTE: If you have a WEATHERPAKTM, it aligns itself automatically by means of a built-in
electronic compass.
There is a RED arrow that should
point North
This box on the side should face South
There is a RED line along the side that
should point North
There are two alignment screws that hold
the vane (tail) in a fixed position when
screwed in. Once these alignment screws
are in, align the vane (tail) to point South
15

Wind Sensor Alignment
820 First Avenue South, Seattle, WA 98134, USA Tel: [phone] Fax: [phone] www.CoastalEnvironmental.com
On the top plate there are letters showing
both N (North) and S (South)
The box on the side should face South
The Vane/Tail should point North; the Cups
should point South
On the Vane component (right in photo
above) there is a slot at the bottom of
the tube that holds the sensor to the
cross-arm; this slot should face South
16

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4.4 Attach the Sensors to the Tower
(Please note which sensors you ordered)
•Install the wind sensor onto the top of the tower. The wind sensor must be oriented
correctly, so please check the “Wind monitors alignment guide” that will show you
how each of the different wind monitors should be aligned.
•Attach the relative humidity/air temperature sensor to the tower with the U-bolt
supplied.
•Attach the arm for the solar radiation sensor to the top section of the tower in its
bracket. The solar radiation sensor must be oriented so that its mounting arm is aligned
towards the south with the sensor facing skyward when the tower is fully assembled.
Install the solar radiation sensor to the arm and route the cable down the arm to the
tower, securing it with tie wraps as you go. Do not over tighten the tie wraps as the
cable could be damaged.
•Attach the visibility Sensor or combined visibility/precipitation identification sensor to
the tower. If possible, you want to align this sensor in a North-South orientation to
minimize glare and reflection from the sun into the instrument
•If your unit has a radio, install the antenna to the tower with the antenna bracket. The
antenna must be located on the side of the tower towards the base station.
4.5 Locate and Install the Ground Sensors
•Locate the tipping bucket or other type of precipitation sensor free and clear from
obstructions that could block rainfall. Attach the gauge to a stake at least 30 Cm high,
but less than 1 meter
•Locate the soil temperature sensor within 20ft of the tower. Drill a hole to the correct
depth with the auger. Set the sensor into the hole checking to be sure it is installed to
the correct depth. Fill the hole around and above the sensor with the dirt that was
removed from the hole. Lightly tamp the dirt. Mark the site with a small flag or other
marker to prevent damage to the sensor from shovels and equipment.
•Determine the soil moisture sensor location. Drill a hole to the correct depth with the
auger. Using some of the dirt removed from the hole prepare a slurry with water and
pour into the bottom of the hole to a depth of 3 inches. Set the sensor into the slurry
and pour the rest of the slurry over the top of the sensor. Fill the hole around and
above the sensor with dirt that was removed from the hole. Lightly tamp the dirt. Mark
the site with a small flag or other marker to prevent damage to the sensor from shovels
and equipment.
•Install the Ceilometer/cloud height sensor on a separate pad at least 5 feet from the
main tower.

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•Install the lightning/Thunderstorm sensor either on an arm extending from the tower
or on a separate stand.
•Route the cables to the base of the tower and mark the route with flags as appropriate
to prevent damage to the cables from shovels and equipment.
4.6 Earth Grounding the Tower
If you are using an existing tower – be sure it is grounded and has a lightning rod. If not, your
tower purchased from Coastal should come with these:
•Install the lightning rod at the top of the tower so that it extends above all else
•Attach by using the clamps and copper wire to the tower top
•Install the copper ground stake
•Use the other piece of copper wire and clamps to connect the same leg of the tower the
lightning rod is on to the copper ground stake.
4.7 Attaching Sensor Cables to ZENO®
Do not open the box if the weather is inclement and there is a possibility of getting moisture inside
the box. Your station may have been ordered with either MIL-SPEC connect connectors or with
compression fittings for each cable (dorn fittings).
•If you purchased the MIL-Spec connectors then simply connect them to the
appropriate mating connector on the enclosure.
•If you have dorn fitting then:
•Undo the dorn compression fitting at the base of the NEMA box.
•Push the cable through the dorn compression fitting on the NEMA box.
•Connect the sensor cable to the ZENO®3200 per the wiring diagram. Use the small
cable ties to tidy up the cables running inside the NEMA box. Place the desiccant
inside the NEMA box.
•Tighten the dorn compression fitting.
•Secure the cable to the tower with plastic clamps/tie wraps, if not already done.
4.8 Attaching the Battery
•If you are using Mains power then connect power at this time. If you have a solar
power system, then attach the bracket to the solar panel and attach the bracket to the
tower using the U-bolt supplied. The solar panel should be pointing south in the
northern hemisphere.

ZENO®Weather Station Manual
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•Install battery (if you have one) into the NEMA box. The negative cable should be the
last connected and the first removed. To avoid shorting the ZENO®and radio, do not
let any of the power cables touch the ZENO®, radio or radio cable.
Do NOT touch battery power cables to the radio, radio cable or the ZENO®3200.
5. Routine Maintenance
The ZENO® 3200 Weather Monitoring Systems are designed for long-term, unattended operation.
Your maintenance schedules will probably be dominated by the requirements of your sensors.
The following maintenance activities are recommended for accessible systems.
•Tighten all fittings.
•Check that all external cables are in good condition, and taut. If the cables have
become slack, gather together more cable at the enclosure.
•Check that the cable ties have not become brittle due to UV exposure. Replace any
brittle ties.
•Apply WD-40 or a similar agent to all hinges and latches on your enclosure.
•Open any NEMA boxes and check the condition of the rubber gasket. Change the
desiccant before closing the box.
•Whenever you open the enclosure containing the ZENO® 3200 datalogger, you should
change the desiccant.
•Preventive maintenance is important; some of the obvious reasons for it are:
•Extend the lifetime of the parts by keeping them clean and lubricated, and
•Prevent untimely breakdowns by routinely catching worn parts before they break.
•Scheduled preventive maintenance is best performed in mild and clear weather and
with two people.

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6. Connecting to the ZENO®– Overview
By connecting the ZENO®to your computer through its RS-232 or USB serial port, you can
access the easy-to-use, text-based menu system. This lets you:
•download data,
•change sampling schemes,
•modify other operating characteristics.
The menu software resides entirely within the ZENO®itself however you will need a terminal
program to connect. You can use HyperTerminal or the UCON software that is shipped with your
Weather Station.
Getting connected
To access the ZENO®menu structure, you need:
•a computer (e.g., a PC or Macintosh) with an RS-232 serial port or USB port with
adaptor, running a communication program such as UCON, or the Microsoft Windows
Terminal program;
•a cable allowing the ZENO®’s terminal port to be connected to your computer
Figure 6-1: shows the position of the terminal port on your enclosure.
Figure 6-1: ZENO®3200