MET ONE RAIN GAGE MODELS 380, 385, 380M, 385M REVISION: 2/96 COPYRIGHT (c) 1993-1996 CAMPBELL SCIENTIFIC, INC.
WARRANTY AND ASSISTANCE The MET ONE RAIN GAGE--MODELS 380, 385, 380M, 385M is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products.
MET ONE RAIN GAGE MODELS 380, 385, 380M, 385M 1. INTRODUCTION Met One's tipping bucket rain or snow gage is used to measure rain or snow water equivalent on a continuous basis. The Model 380 rain gage is intended to measure rainfall during above freezing conditions. The Model 385 AC heated rain gage provides year round measurement of either rain or snow. In the standard versions Model 380/385, precipitation is measured in increments of 0.01 inches.
MET ONE RAIN GAGE 385-SV ( ) FIGURE 1. 385 Met One Rain and Snow Gage 3. INSTALLATION 3.1 LOCATION The rain or snow gage should be mounted in a relatively level spot which is representative of the surrounding area. The lip of the funnel should be horizontal and at least 30 inches above the ground. Install the snow gage high enough to prevent burial by snow during the winter months. The ground surface around the rain gage should be natural vegetation or gravel.
MET ONE RAIN GAGE The BLACK (+5V Signal) lead connects to a pulse channel. The CLEAR (Power Ground) connects to any ground channel (G). The WHITE (shield) lead connects to any ground channel (G). The purpose of the shield wire is to drain any charges built up in the cable due to transients etc. NOTE: If a pulse channel is not available, Control Port 7 or 8 can be used to record switch closures from a rain gage with the CR10 datalogger. Refer to the CR10 datalogger manual, section 8.
MET ONE RAIN GAGE FIGURE 2.
MET ONE RAIN GAGE P/N 2196 (2) Plcs. 6" Cut Shield Off Flush to Jacket 8" 3/8" 3/8" CLEAR CLEAR SHIELD BLACK BLACK White Heat Shrink Heat Shrink (2) Plcs. P/N 2222 Beldon #8641 P/N 2196 (3) Plcs. 2" 3/8" 8" 3/8" BLACK WHITE GREEN Heat Shrink (2) Plcs. P/N 7805 Beldon #1934B FIGURE 3.
MET ONE RAIN GAGE 3.4 DATALOGGER INSTRUCTIONS CR10, 21X, CR7 Programming: The Model 380 rain gage is measured using Instruction 3 configured for a switch closure (option code 2). In the following example, the CR10 continuously measures rainfall and outputs the time, date, and total rainfall every 60 minutes: Input Location Labels: 01: 01: 01: 02: 03: 04: 05: 06: 1 60 P3 1 1 2 1 0.01 0 5.
MET ONE RAIN GAGE 5. Repeat steps 3 and 4 for the opposite bucket. 5.1 FACTORY RECALIBRATION: Factory recalibration is available from either Campbell Scientific Incorporated or Met One Instruments. Please call and request an RMA number prior to returning any equipment to Campbell Scientific Incorporated 6. Repeat steps 1-5 to ensure proper calibration. 7. Reinstall the housing assembly and tighten the three screws. TABLE 1 Tip Increment in3 ml ounces 0.01 in 1.130 18.52 0.63 0.1 mm 0.445 7.
