255-100 Analog Output Evaporation Gauge
255-110 Evaporation Gauge Tester
 |
 |
| 255-100 Evaporation Gauge | 255-110 Evaporation Gauge Tester |
The Model 255-100 Analog Output Evaporation Gauge is used to determine the evaporation rate by measuring the changing water level in an evaporation pan. A standard National Weather Service Class A Evaporation Pan is recommended. The sensor consists of a float, pulley, and counterweight attached to a precision 1000-ohm potentiometer mounted through a gear assembly in a weatherproof housing. The triangular base plate is equipped with three leveling screws and a bubble level. The potentiometer produces a resistance output proportional to the position of the float which can be monitored on site using a data logger or a strip chart recorder, or monitored remotely by telemetry equipment. The instrument can be placed directly in the pan, or connected to the pan using the 255-100P/F stainless steel pipe and fittings.
The Model 255-110 Evaporation Gauge Tester works with the 255-100 Evaporation Gauge to provide a direct reading in inches, corresponding to the output from the evaporation gauge. The tester is used to set-up the evaporation gauge during initial installation and can be used to provide a direct reading of daily evaporation loss.
Specifications
255-100 Evaporation Gauge
Potentiometer:
Accuracy: 0.25%
Rotation: Continuous
Resistance: 1000 ohms
Operating temperatures: -40° to 60° C
Linearity: 0.25%
Range: 0-10"
System accuracy: Evaporation gauge with pan and pipes ± 0.25% over 10" range
Float: 4" diameter
Height: 27-1/2"
Diameter: 8"
Base: 16" triangle with leveling screws
Water input port: 1/2" NP coupling, female
Cable: 3 conductor, 50' included
Weight/Shipping: 7-1/2 lbs/30 lbs
Shipping box: 15" x 15" x 30" (oversize)
255-110 Evaporation Gauge Tester
Range: 0 to 10.00 inches
Resolution: 0.01 inches
Temperature range: 0-50°C (32-122°F)
Humidity range: Non-condensing
Accuracy: Better than ± 0.25% of reading
Display: 3-1/2 digit, 7 segment 0.5" high LCD
Batteries: 9 V display, 1.5 V tester
Size: 5" H x 3" W x 2" D
Weight/shipping: 12 oz/2 lbs
Ordering Information
255-100 Analog Output Evaporation Gauge
255-100P/F Stainless Steel Pipe and Fittings
255-100POT Replacement Potentiometer
255-110 Evaporation Gauge Tester
255-110MS 3-Pin MS Connector Option for Tester (for use with old-style evap gauge)
Go to...
Evaporation Sensors
Main Table of Contents
Top of Page