Novalynx 255-200 User manual

NOVALYNX CORPORATION
MODEL 255-200
EVAPORATION PAN
INSTRUCTION MANUAL
REVISION DATE: 04/06/2007

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Receiving and Unpac ing
Carefully unpack all co ponents and co pare to the packing list. Notify NovaLynx
Corporation i ediately concerning any discrepancy. Inspect equip ent to detect any
da age that ay have occurred during ship ent. In the event of da age, any clai for
loss ust be filed i ediately with the carrier by the consignee. Da ages to
equip ent sent via Parcel Post or UPS require the consignee to contact NovaLynx
Corporation for instructions.
Returns
If equip ent is to be returned to the factory for any reason, call NovaLynx between
8:00 a. . and 4:00 p. . Pacific Ti e to request a Return Authorization Nu ber (RA#).
Include with the returned equip ent a description of the proble and the na e,
address, and dayti e phone nu ber of the sender. Carefully pack the equip ent to
prevent da age or additional da age during the return ship ent. Call NovaLynx for
packing instructions in the case of delicate or sensitive ite s. If packing facilities are not
available take the equip ent to the nearest Post Office, UPS, or other freight service
and obtain assistance with the packaging. Please write the RA# on the outside of the
box.
Warranty
NovaLynx Corporation warrants that its products are free fro defects in aterial and
work anship under nor al use and service for a period of one year fro the date of
ship ent fro the factory. NovaLynx Corporation's obligations under this warranty are
li ited to, at NovaLynx's option: (i) replacing; or (ii) repairing; any product deter ined to
be defective. In no case shall NovaLynx Corporation's liability exceed product's original
purchase price. This warranty does not apply to any equip ent that has been repaired
or altered, except by NovaLynx Corporation, or that has been subjected to isuse,
negligence, or accident. It is expressly agreed that this warranty will be in lieu of all
warranties of fitness and in lieu of the warranty of erchantability.
Address
NovaLynx Corporation
4055 Grass Valley Highway, Suite 102
Auburn, CA 95602
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.novalynx.com
Copyright © 1988-2007 by NovaLynx Corporation

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TABLE OF CONTENTS
Section No. Page No.
1.0 INTRODUCTION .................................................. 1
1.1 Specifications................................................ 1
2.0 SITING GUIDELINES............................................... 1
3.0 INSTALLATION AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4.0 DRAWINGS ...................................................... 2

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1
NovaLynx Corporation
Model 255-200 Evaporation Pan
Instruction Manual
1.0 INTRODUCTION
The Model 255-200 Evaporation pan is a standard National Weather Service
Class A type for evaporation easure ent. It is usually installed on a wooden platfor
set on the ground in a grassy location. The pan is filled with water and exposed to
represent an open body of water. The pan is filled to within 2.5 inches of the top. The
evaporation rate then is easured by anual readings or with an analog output
evaporation gauge.
1.1 Specifications
Material: Low carbon stainless steel, type 304, 18 gauge
Construction: Heliarc welded, 1/2" drain plug, NPT fe ale coupling
Size: Cylindrical, inside di ensions 10" deep x 47-1/2" dia, wall thickness 0.047"
Volume: Approx 77 gallons (adding 7.7 gallons will raise water level in pan by 1")
Weight/shipping: 48 lbs/59 lbs
2.0 SITING GUIDELINES
The site for the equip ent should be level, sodded, and free fro obstructions. It
should be representative of the principal natural agricultural soils and vegetation
conditions of the area. At locations where the nor al cli ate and soil do not per it the
aintenance of a sod cover, the ground cover should be aintained as near as
possible to the natural cover co on to the area. Under no conditions should the
evaporation pan or the instru ent shelter be placed on concrete, asphalt, or over a
layer of crushed rock. Obstructions such as shrubs, trees, or buildings should not be
closer than four ti es the height of the object above the pan. Weeds and grass should
be owed to keep the below the level of the pan. The exposure should be free fro
obstructions that cast shadows over the pan during any part of the day other than brief
periods near sunrise and sunset. Avoid locations near ponds, swa ps of not ore than
a few iles in dia eter (particularly if they are te porary in nature), lawns or other
areas that receive frequent sprinkling or irrigation. At reservoirs (flood control, water
supply, irrigation project), a site on the upwind side of the lake or reservoir is preferable,
based on the prevailing direction of the strongest winds. Locate the equip ent a
sufficient distance fro spillways and other bodies of water to ini ize chances for
water to be blown into the pan by strong winds. The site should be surrounded by a
fence to protect the equip ent and to prevent ani als fro drinking the water. A steel
link fence, 9 or 11 gauge, a ini u of 4' high, with steel posts set in concrete, is
suggested. If the area has proble s with s all ani als or rodents, it ay be necessary
to bury a barrier and place 18" to 24" of chicken wire (galvanized) along the botto of
the fence.

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3.0 INSTALLATION AND MAINTENANCE
The ground should be filled sufficiently to level the pan support and to keep the pan
above the level of surface water in rainy weather. Earth fill should be used around the
support to anchor it. It should be ta ped fir ly between the top e bers to within 1/2"
of the top of the support, leaving an air space between the botto of the pan and the fill
to facilitate inspection of the pan for leaks. The pan should be centered on the platfor .
During inspections the platfor level should be checked and corrected if needed.
When a icro eter hook gauge is used for easuring water levels, two short lines
painted on the inside of the pan, 2" and 3" below the ri , will assist in aintaining the
proper water level.
Because the te perature characteristics of all evaporation pans ust be identical, they
ust not be painted. Clean the pan as frequently as necessary to keep it free fro
sedi ent, algae, and oil fil s. Any of these conta inants will aterially affect the rate
of evaporation.
The growth of algae can be discouraged by adding a s all a ount (5-10 g/liter) of
copper sulfate to the water. A standard Class A pan filled to 8 inches would require
about 1/2 teaspoon of copper sulfate crystals. If algae is already present, it ust be
re oved first by thoroughly cleaning the pan.
Inspect the pan carefully for leaks at least once a onth. Report the finding of any leaks
on the observation for for the onth. Report both the date the leak was discovered
and the date the pan was repaired or replaced.
The pan should be e ptied by siphoning or dipping the water out. Under no
circu stances should the pan be lifted and e ptied if any significant a ount of liquid
re ains in the pan.
During onths when freezing is likely, e pty, clean, and store the pan. The pan should
be stored indoors, if possible. If it is left in the fenced enclosure, it should be turned
upside down and secured to the platfor .
Where it is necessary to transport water so e distance, a tank or other covered
receptacle should be located near the site. A tank having a capacity of at least 30
gallons usually provides an adequate reserve of water. The storage tank should be
thoroughly cleaned at the beginning of each season. The water placed in the tank
should be co pletely free of oil. At the end of the season, the tank should be e ptied
and secured to prevent freeze and wind da age.
4.0 DRAWINGS
AC102389 Asse bly, Evaporation Pan
10000234 Outline, Evaporation Station, NWS Configuration
Fig 2.4 Construction-Data, Evaporation Pan Support