Model H-340 Tipping Bucket Rain Gauge Owner's Manual Version 1.
1. NATURE OF THE PRODUCT User Agreement/ WATERLOG® Warranty This agreement accompanies a pressure measuring system comprising micro-coded circuitry and other electronic equipment sealed in an enclosed housing, and packaged together with written instructional materials. The packaged electronic circuitry and instructional materials herein are collectively referred to as the “PRODUCT.” The PRODUCT is made available from DESIGN ANALYSIS ASSOCIATES, INC.
. TERM USER may enjoy these rights only as long as their possession of the PRODUCT shall continue to be rightful. These rights will cease if the PRODUCT is returned to DESIGN ANALYSIS under the terms of any redemption offer, warranty, or money-back guarantee, or if USER transfers the PRODUCT to another party on terms inconsistent with this agreement. 5.
(iii) EXCEPT FOR THE EXPRESS WARRANTIES ABOVE, DESIGN ANALYSIS SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, INCLUDING, WITHOUT LIMITATION, ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. (iv) UNDER NO CIRCUMSTANCES WILL DESIGN ANALYSIS BE LIABLE FOR SPECIAL, INCIDENTAL, CONSEQUENTIAL, INDIRECT, OR ANY OTHER DAMAGES OR CLAIMS ARISING FROM THE USE OF THIS PRODUCT, THIS INCLUDES LOSS OF PROFITS OR ANY OTHER COMMERCIAL DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Chapter 1 H-340 Operation 1.1 Introduction The WATERLOG®H-340 is a rugged, durable, Tipping Bucket Rain Gauge. The H-340 has the following features: Switch closure output connects directly to a data logger Patented bucket tip mechanism is easy to adjust Removable stainless steel funnel screen Rustproof, powder painted aluminum enclosure and cast base Side windows allow inspection of mechanism without removing cover No plastic parts All internal parts anodized aluminum or stainless steel 1.
Figure 1 Bucket tip mechanism sensitivity 1.3 Installation Install the H-340 in an open location where it will not be in the rain shadow of trees or buildings. A rooftop location helps prevent vandalism and the accumulation of leaves and debris. Bolt or screw the 3-mounting feet to the structure to prevent upset in high winds. Adjust the three selfleveling screws until the “bulls eye” level is centered. 1.
1. 2. 3. 4. 5. 6. 7. 8. 9. Empty the graduated cylinder. Start the water flow into the funnel. Wait until at least 100 bucket tips have occurred (1% resolution). Stop the water flow. Observe and record the water volume in the graduated cylinder. Use the formula below to compute the actual rainfall in the graduated cylinder.. Calculate the rainfall measured by the rain gauge (0.01inches x number of tips). Compare the difference between these two values.
1. To adjust for more tips (more rainfall volume), release nut #1 and turn weight counter clockwise (down). Re-lock nut #1. 2. To adjust for less tips (less rainfall volume) release nut #1 and turn weight clockwise (up). Re-lock nut #1. 3. To adjust for equal amounts of water in each bucket, loosen set screw #2, turn adjusting screw toward the bucket with the most amount of water, then re-lock the setscrew. Set Screw Balance Screw Lock Nut #1 2.
Appendix A Specifications General Resolution: Rate: 0.01 Inches (@4in/hr) 0 to 25 inches/hour Calibrated @ 8.237 mL/tip = 0.01in rainfall, includes computer printout of conformance. Magnetic Reed Switch Type: Rating: Contact Resistance: Normally open encapsulated reed. 200VDC max 0.1A max 0.
