Davis 7345.147 Rain Gauge Tipping Spoons Replacement Part for Vantage Pro 2

Introduction

This manual provides comprehensive instructions for the installation, operation, and maintenance of the Davis 7345.147 Rain Gauge Tipping Spoons. This component serves as a direct replacement part for the rain gauge mechanism found in all Davis Vantage Pro 2 weather stations. Adhering to these guidelines will ensure optimal performance and longevity of your rain gauge system.

Product Overview

The Davis 7345.147 is a precision-engineered tipping spoon mechanism, calibrated to measure rainfall in 0.2 mm increments. It is designed for seamless integration with all Davis Vantage Pro 2 rain gauges. This replacement part includes the necessary connection cable for electrical hookup. The updated design offers an improved accuracy of +/- 3%, enhancing the reliability of your rainfall measurements compared to previous versions.

Image showing the Davis 7345.147 rain gauge tipping spoons replacement part, featuring the black tipping mechanism and the white base with a connection point.

Setup and Installation

Follow these steps to correctly install the replacement tipping spoon mechanism:

1. Preparation: Before commencing installation, ensure that your Vantage Pro 2 console or receiver is powered off and completely disconnected from the rain gauge unit. This prevents potential electrical damage.
2. Accessing the Mechanism: Carefully open the rain gauge housing. Refer to your Vantage Pro 2 rain gauge manual for specific instructions on how to safely open the enclosure.
3. Removing the Old Mechanism: Locate the existing tipping spoon mechanism. Disconnect its electrical connection and unfasten it from its mounting points within the rain gauge housing.
4. Installing the New Mechanism: Position the new Davis 7345.147 tipping spoon mechanism in the designated area. Securely fasten it to the mounting points. Connect the included cable to the appropriate internal wiring of the rain gauge. Ensure all connections are firm and correct.
5. Closing the Housing: Carefully close the rain gauge housing. Verify that all seals are properly seated to maintain watertight integrity and prevent moisture from entering the unit.
6. System Reconnection: Reconnect the rain gauge to your Vantage Pro 2 console or receiver. Power on the system.
7. Calibration Check: If your Vantage Pro 2 system supports it, perform a calibration check. Slowly pour a measured amount of water into the rain collector to observe the tipping action and confirm that the console registers rainfall accurately.

Operation

The Davis 7345.147 tipping spoon mechanism functions by collecting rainfall in one of two small, balanced buckets. When one bucket accumulates precisely 0.2 mm of rain, its weight causes it to tip, emptying its contents and simultaneously positioning the other bucket to begin collecting rain. Each tipping action is detected by the Vantage Pro 2 system and recorded as a 0.2 mm rainfall event, contributing to the total rainfall data displayed on your console.

Maintenance

Regular maintenance ensures the accuracy and longevity of your tipping spoon mechanism:

• Inspection: Periodically inspect the tipping spoon mechanism for any obstructions such as leaves, spiderwebs, insects, or accumulated dirt. These can impede the free movement of the spoons and affect measurement accuracy.
• Cleaning: Gently clean the spoons and the surrounding area using a soft, damp cloth. Avoid using abrasive cleaning agents, harsh chemicals, or sharp tools, as these can damage the plastic components or calibration.
• Pivot Points: Ensure that the pivot points of the spoons move freely without sticking. Lubrication is generally not recommended as it can attract dust and debris, potentially causing more issues.
• Cable Integrity: Verify that the connection cable is intact, free from cuts, fraying, or other damage that could disrupt data transmission.

Troubleshooting

If you encounter issues with your rain gauge, consider the following:

• No Rainfall Readings:
  • Check all cable connections between the tipping spoon mechanism and the main Vantage Pro 2 unit.
  • Ensure the spoons are not physically obstructed and can tip freely.
  • Verify that the Vantage Pro 2 console is powered on and receiving data from other sensors.
• Inaccurate Readings:
  • Clean the tipping spoons and the collection funnel thoroughly to remove any debris.
  • Confirm that the rain gauge is installed on a level surface. An unlevel installation can lead to incorrect tipping.
  • Perform a manual calibration test by slowly pouring a known volume of water into the collector and counting the tips. Compare this to the expected number of tips for that volume.
• Stuck Spoons:
  • Remove any visible debris that is preventing the spoons from tipping.
  • If the mechanism appears physically damaged or worn, replacement may be necessary.

Specifications

Warranty and Support

For detailed information regarding product warranty, technical support, or service inquiries, please visit the official Davis Instruments website or contact their customer service department directly. It is recommended to retain your purchase receipt as proof of purchase for any warranty claims.