Heated Rain Gauge - Model 2500-00
Tipping Bucket Rain Gauge - 2400 Series

 

 

FEATURES:

 

  • Intelligent Thermostat Control
  • 2 Individual Heaters
  • 12 in (30.5 cm) Diameter Orifice
  • Low Power Consumption
  • Minimizes Thermal Chimney Effect

 


 

DESCRIPTION:

      Heated Rain Gauge - Model 2500-00

 

Electrically Heated Rain Gauge internal drawing

The Electrically Heated Rain Gauge - Model 2500-00 accurately measures rain and frozen precipitation. Mechanically the same as the Model 2400-15 Rain Gauge, the Electrically Heated Rain Gauge is designed for mounting on top of an ALERT standpipe. (Optional roof mount or pole mount configurations are available.)

The Electrically Heated Rain Gauge consists of a one-piece machined aluminum tipping bucket and an aluminum housing which holds a spun aluminum funnel. The Heated Rain Gauges include two separate heaters: a 500 watt wrap-around blanket heater attached to the underside of the collection funnel to melt the precipitation, and a 100 watt blanket heater is mounted under the top section base so that the measured precipitation passes out of the heated rain gauge freely without freezing. Each heater is controlled by an individual thermostat in the Heated Rain Gauge to reduce power consumption and evaporation. Note that laboratory testing on the Heated Rain Gauges at an ambient air temperature of -10° F (-23.3° C) showed power consumption of less than 1 kW hour per day.

As precipitation is collected and melted in the Heated Rain Gauge's funnel, water is directed to a tipping bucket mechanism adjusted to tip and dump when 0.04 inches (1.0 mm) of water is collected. An optional 0.01 inch (0.25 mm) Heated Rain Gauge tipping bucket is available.

With each tip of the Heated Rain Gauge's bucket, a magnet passes over a sealed reed switch which causes a momentary contact closure. The Heated Rain Gauge's contact closure is counted by the circuitry in the data collection equipment. Measurement accuracy is ±1.5% at a precipitation rate up to 2 inches (50.8 mm) per hour.

The Electrically Heated Rain Gauge - Model 2500-00 operates at 120VAC, 60Hz (also available at 240VAC, 50Hz) and comes with an 8 foot (2.44 m) power cord. A bulls-eye level is integrally mounted to the Heated Rain Gauge's tipping base for ease of leveling during installation.


 

SPECIFICATIONS:

Event Resloution ...........................   1 mm/Tip
Accuracy ...........................   ±1.5% for 0 to 2 inches (0 to 50.8 mm) per Hour
Sensor Type ...........................   Tipping Bucket
Sensor Element ...........................   Reed Switch, Normally Open, (Form C - Optional)
Signal Output ...........................   Momentary Contact Closure
Hysteresis ...........................   5° F (2.8° C) (Each Heater)
Upper Heater ...........................   Turn-On at 39° F (3.9° C)/Turn-Off at 44°F (6.7°C)
Lower Heater ...........................   Turn-On at 33° F (0.6°C)/Turn-Off at 38° F (3.3° C)
Operating Voltage ...........................   120 VAC, 60 Hz (240 VAC, 50 Hz Optional)
Mounting ...........................   Standard Top Section for Standpipes, (roof and pole mounting optional)
Materials      
     Funnel ...........................   Spun Aluminum
     Sensor Housing ...........................   Aluminum Cylinder
     Catch Bucket ...........................   Machined Aluminum
     Base ...........................   Spun Aluminum
Cable      
     Rain Gauge Sensor ...........................   3-conductor 24 AWG
     Rain Gauge Power ...........................   3-conductor 18 AWG with ground
Cable Length      
     Rain Gauge Sensor ...........................   25 ft (7.6 m)
     Rain Gauge Power ...........................   8 ft (2.44 m)
Dimensions ...........................   12x23 inch (30.5x58.4 cm) (DiaxH)
Weight ...........................   15 lbs (6.8 kg)
Shipping Weight ...........................   19 lbs (8.6 kg)

 

ORDERING GUIDE:
HSE Warranty
General Terms and Conditions

Model 2500-00 ......... Electrically Heated Rain Gauge, (Slotted); Includes: Standpipe mounting base. Calibration 1mm/Tip (Specify 120V or 240V) (for use with standpipe)
Model 2500-02 ......... Electrically Heated Rain Gauge Roof Mounting, (Slotted), Calibration 1mm/Tip (Specify 120V or 240V)
Model 2500-06 ......... Electrically Heated Rain Gauge Roof Mounting w/chamber temperature monitoring, (Slotted) (Specify 120V or 240V)

OPTIONAL:

Model 2400-22 ......... Pole Mounted Base for Model 2500-00 rain gauge (Does not include heated rain gauge.) (Threaded pole flange not included.)
Model 5101-00 ......... Extra Sensor Cable, 3-Conductor 24 AWG (1 ft Increments)
PN# 10-0012798-01 ......... AC Power Cable; 8 ft (2.44 m) 3-conductor 18 AWG
Model 2500-07 ......... Extended Base for Roof Mount Rain Gauge (per foot)
Model 2500-05 ......... Electrically Heated Rain Gauge Retrofit Kit (Converts Model 2400-15 to a Model 2500)
Model 2400-04 ......... 3 Wire, (Form "C") Reed Switch
Model 2400-10 ......... 0.01 inch Tipping Bucket Mechanism

 

RELATED PRODUCTS:

Model 2310-00 ......... All Season Precipitation Gauge
2400 Series ......... 12 inch Tipping Bucket Rain Gauge
Model 2408-00 ......... 8 inch Tipping Bucket
Model 2601-00 ......... Non-Recording Rain Gauge
Model 2700-00 ......... Plastic Rain Gauge
Model 5428-00 ......... Snow Depth Sensor
Model 5450-01 ......... Frost Depth Temperature Probe
Model 3425-00 ......... Electrically Heated Rain and Snow Gauge Station
Model 7000-13 ......... 10 ft (3 m) Standpipe Section


 

SUPPORT:

Weather Station Applications: Applications
Heated Rain Gauge - Model 2500-00: Datasheet
Heated Rain Gauge - Model 2500-00: Manual