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Campbell 385 Instruction Manual

Met one rain gage
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Met One Rain Gage
Models 380 and 385
Revision: 2/08
C o p y r i g h t
©
1 9 9 3 - 2 0 0 8
C a m p b e l l
S c i e n t i f i c ,
I n c .

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Summary of Contents for Campbell 385

  • Page 1 Met One Rain Gage Models 380 and 385 Revision: 2/08 C o p y r i g h t © 1 9 9 3 - 2 0 0 8 C a m p b e l l S c i e n t i f i c , I n c .
  • Page 2 Warranty and Assistance The MET ONE RAIN GAGE MODELS 380 AND 385 are 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.

  • Page 3: Table Of Contents

    Met One Rain Gage Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections. 1. Introduction..............1 2. Specifications ..............2 3. Installation..............2 3.1 Siting......................2 3.2 Mounting ....................3 3.3 Screen Removal ..................3 4.
  • Page 4 Met One Rain Gage Table of Contents Tables 4-1. Wiring for Pulse Channel Input.............. 9 4-2. Wiring for Control Port Input..............9 7-1. Volume of Water for Recalibration ............15...

  • Page 5: Introduction

    Met One Rain Gage Models 380 and 385 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.

  • Page 6: Specifications

    Met One Rain Gage Models 380 and 385 2. Specifications MODEL 380/385 RAIN GAGE Funnel: 12 inch (30.5 cm) Accuracy: ±0.5% < 0.5"(1.27 cm)/hr rate ±2.0% < 3.0"(7.62 cm)/hr rate Resolution: 380/385 0.01 inch Environmental Conditions: Temperature: 0°C to +50°C Humidity: 0 to 100% Dimensions:...

  • Page 7: Mounting

    The mounting legs are pre- drilled for 1/4" bolts on a 9.66" diameter bolt circle. A mounting bracket is available from Campbell Scientific (CM240) to install either the rain or snow gage. The mounting bracket provides additional adjustment for leveling the rain or snow gage.

  • Page 8: Typical Snow Gage Installation

    Met One Rain Gage Models 380 and 385 CM240 Mounting Bracket Level Adjustments Power Cable 1.5” IPS Pipe User-Supplied AC Power Termination Box User-Supplied AC Power and Conduit for Heated Snow Gage User-Supplied 1” Conduit for Signal Cable User-Supplied 24” Concrete Pad FIGURE 3-1.

  • Page 9: Pedestal Base Options

    Met One Rain Gage Models 380 and 385 3.5” 1.5” 24” FIGURE 3-2. Pedestal Base Options...

  • Page 10: Connecting Signal Cable Leads

    Met One Rain Gage Models 380 and 385 P/N 2196 (2) Plcs. 8” 6” Cut Shield Off Flush to Jacket 3/8” 3/8” WHITE WHITE SHIELD BLACK BLACK Clear Heat Shrink Heat Shrink (2) Plcs. P/N 9661 8” 2” 3/8” 3/8” BLACK WHITE GREEN...

  • Page 11: Remove Screen If Snow Is Anticipated

    Met One Rain Gage Models 380 and 385 Remove Primary Screen if Snow is Anticipated FIGURE 3-4. Remove Screen if Snow is Anticipated...

  • Page 12: Wiring

    Met One Rain Gage Models 380 and 385 Rain guage Base unnel Heater (240w) Conduit Power Cable Connection Watertight Cable Base Clamp Heater (75w) 110 VAC 50/60 HZ Protected by 15AG I Circuit Breaker FIGURE 3-5. Connecting Heater Wires 4. Wiring WARNING Disconnect heater power before attempting to service or repair this equipment.

  • Page 13: Heater Wiring

    4.2 Wiring for Pulse Channel Input Connections to Campbell Scientific dataloggers are given in Table 4-1. When Short Cut for Windows software is used to create the datalogger program, the sensor should be wired to the channels shown on the wiring diagram created by Short Cut.

  • Page 14: Datalogger Programming

    5.1 CR10X Programming This section is for users who write their own programs. A datalogger program to measure this sensor can be created using Campbell Scientific’s Short Cut Program Builder software. You do not need to read this section to use Short Cut.

  • Page 15: Cr200 Series Programming

    Met One Rain Gage Models 380 and 385 5.1.1 CR200 Series Programming 'CR200 Series 'Example program showing measurement of a 380/385 sensor every 10 seconds. 'Declare Public Variables and Units Public Rain_in Units Rain_in=inch 'Define Data Tables DataTable(Table1,True,-1) 'As an example store the data every 60 minutes. DataInterval(0,60,Min) Totalize(1,Rain_in,False) EndTable...

  • Page 16: Control Port Programming

    Met One Rain Gage Models 380 and 385 ‘Main Program BeginProg Scan(10,Sec,1,0) ‘Default Datalogger Battery Voltage measurement Batt_Volt: Battery(Batt_Volt) ‘MetOne 380/385 Rain Gauge measurement Rain_in: PulseCount(Rain_in,1,1,2,0,0.01,0) ‘Call Data Tables and Store Data CallTable(Table1) CallTable(Table2) NextScan EndProg 5.2 Control Port Programming The following examples measure a 380 and 385 rain gage using a control port on a datalogger.

  • Page 17: Cr10X Programming

    Met One Rain Gage Models 380 and 385 'Define Data Tables DataTable(Table1,True,-1) 'As an example store the data every 60 minutes. DataInterval(0,60,Min) Totalize(1,Rain_in,False) EndTable 'Main Program BeginProg Scan(10,Sec) 'MetOne 380/385 Rain Gauge measurement Rain_in: PulseCount(Rain_in,C2,2,0,0.01,0) ; Black wire connect to C2 'Call Data Tables and Store Data CallTable(Table1) NextScan...

  • Page 18: Troubleshooting

    Met One Rain Gage Models 380 and 385 6. Troubleshooting 6.1 Precipitation Symptom: No precipitation Check that the sensor is wired to the Pulse Channel specified by the Pulse Count instruction. Verify that the Configuration Code (Switch Closure), and Multiplier and Offset parameters for the Pulse Count instruction are correct for the datalogger type.

  • Page 19: Factory Recalibration

    Tip Increment ounces 0.01 in 1.130 18.52 0.63 7.2 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...
  • Page 20 Met One Rain Gage Models 380 and 385...
  • Page 21 This is a blank page.
  • Page 22 Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za cleroux@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)

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