Related Manuals for Campbell 255-100
Summary of Contents for Campbell 255-100
- Page 1 255-100 Novalynx Analogue Output Evaporation Gauge Revision: 8/18 Copyright © 2009 – 2018 Campbell Scientific...
- Page 3 Quotations for repairs can be given on request. It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment, in support of this policy a “Declaration of Hazardous Material and Decontamination”...
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Page 5: About This Manual
PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in... - Page 7 • Periodically (at least yearly) check electrical ground connections. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS...
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Page 9: Table Of Contents
8. Maintenance ............. 12 9. Attributions and References ........12 Appendix A. Example Programs ..........A-1 CR1000X Program ................A-1 CR200(X)-Series Program .............. A-2 Figures 4-1. 255-100 Novalynx Analogue Output Evaporation Gauge ....2 4-2. 255-200 Novalynx Class A Evaporation Pan ........2... - Page 10 255-100P/F Novalynx Stainless Steel Pipe and Fittings for Evaporation Pan ................2 6-1. Components of the 255-100 Evaporation Gauge ........ 5 6-2. 255-100 Attached to the 255-200 by Using the 255-100P/F ....6 6-3. 255-100 Schematic ................7 6-4. Close-up of Terminal Strip on 255-100 ..........7 7-1.
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Page 11: Introduction
Novalynx Corporation manufacturers the 255-100 Analogue Output Evaporation Gauge (FIGURE 4-1) and the 255-200 Class A Evaporation Pan (FIGURE 4-2). The 255-100 consists of a stilling well and potentiometer based shaft encoder. It is a low-power option for reading the water level of an... -
Page 12: 255-100 Novalynx Analogue Output Evaporation Gauge
FIGURE 4-1. 255-100 Novalynx Analogue Output Evaporation Gauge FIGURE 4-2. 255-200 Novalynx Class A Evaporation Pan The 255-100 uses a chain-mounted float and counter weight that turns a sprocket attached to a precision 1000 Ω potentiometer. When provided with a... -
Page 13: Specifications
255-100 Novalynx Analogue Output Evaporation Gauge A flexible hose may be used instead of the stainless-steel pipe, provided it does not deteriorate in outdoor weather conditions. You’ll need 0.5 inch polybraid (fibre-reinforced) flexible hose, nylon fittings (0.5 inch NPT Hose Bar), and small stainless-steel hose clamps. -
Page 14: 255-200 Class A Evaporation Pan
255-100 Novalynx Analogue Output Evaporation Gauge Rotation: 360° continuous Electrical angle: 340°, ±1° (20° gap) Resistance: 1000 Ω, ±10% Operating temperature: –40 to 60 °C (evaporation is normally not measured at temperatures below freezing) Linearity: 0.25% Mechanical range: 0 to 254 mm (0 to 10 in) Electrical range: 0 to 240 mm (0 to 9.44 in) -
Page 15: Installation
255-100 Novalynx Analogue Output Evaporation Gauge Installation FIGURE 6-1. Components of the 255-100 Evaporation Gauge Unpacking Carefully unpack all of the evaporation gauge. Remove the top cover. The float with chain and counter-weight are shipped inside the bottom of the gauge housing. -
Page 16: Field Installation Procedure
Connect the evaporation gauge to the datalogger (Section 6.4, Wiring (p. 7) Attach the evaporation gauge to the evaporation pan (FIGURE 6-2). FIGURE 6-2. 255-100 Attached to the 255-200 by Using the 255-100P/F 10. Fill the evaporation pan with water. Depending on the local rainfall, the pan should be filled to about 2 to 3 inches below the top of the pan. -
Page 17: Wiring
, SE (single-ended, White analogue input voltage output analogue-voltage input) ⏚ (analogue ground) Black Negative Signal ⏚ (analogue ground) Clear Shield U terminals are automatically configured by the measurement instruction. FIGURE 6-3. 255-100 Schematic FIGURE 6-4. Close-up of Terminal Strip on 255-100... -
Page 18: Programming
255-100 Novalynx Analogue Output Evaporation Gauge Programming Programming basics for CRBasic dataloggers are provided in the following sections. Complete program examples for select CRBasic dataloggers can be found in Appendix A, Example Programs . Programming basics and (p. A-1) programming examples for Edlog dataloggers are provided at www.campbellsci.eu\old-manuals. -
Page 19: Operation
Operation Calibration All 255-100 gauges need to be field calibrated by the user. Field calibration will provide the multiplier and offset for use in the datalogger program to provide data in units of inches or centimetres. The FieldCal() instruction may be used to perform the calculations automatically and preserve the results in the datalogger. -
Page 20: Automatically Refilling The Evaporation Pan
255-100 Novalynx Analogue Output Evaporation Gauge FIGURE 7-1. Multiplier and Offset Calculation Example In this example, the pan is filled to a depth of 2 inches and the datalogger reads 100 mV on the gauge. The pan is then filled to a depth of 8 inches and the datalogger reads 2100 mV. -
Page 21: Storage Tank Size
CAUTION Do not use the datalogger switched 12 V terminal to power the solenoid. Campbell Scientific offers an SPST single- channel solid-state relay for this purpose. Mount the relay in the enclosure and run the control voltages and lines (+12 V ground) solenoid. -
Page 22: Maintenance
255-100 Novalynx Analogue Output Evaporation Gauge Maintenance Prevent algae from growing in the pan by adding 5 to 10 mg/litre of copper sulphate to the water. Copper sulphate is available at many farm and garden supply stores. If algae is already in the pan, the pan will need to be thoroughly cleaned. -
Page 23: Appendix A. Example Programs
A.1 CR1000X Program This CR1000X program makes five measurements then averages the readings to reduce error from ripples in the water. CRBasic Example A-1. CR1000X Program for the 255-100 Novalynx Evaporation Gauge 'CR1000X Series Datalogger 'Example program for 255-100 Novalynx evaporation gauge... -
Page 24: Cr200(X)-Series Program
Appendix A. Example Programs A.2 CR200(X)-Series Program CRBasic Example A-2. CR200X Program to Measure the 255-100 Evaporation Gauge 'CR200X Program to measure 255-100 Evaporation Gauge Public Batt_volt Public PanLevel Const PanMultiplier = 1 'Adjust Pan Multiplier and PanOffset Const PanOffset = 0... - Page 26 Campbell Scientific Worldwide Offices Australia Germany Location: Garbutt, QLD Australia Location: Bremen, Germany Email: Email: info@campbellsci.com.au info@campbellsci.de Website: www.campbellsci.com.au Website: www.campbellsci.de Brazil South Africa Location: São Paulo, SP Brazil Location: Stellenbosch, South Africa Email: andread@campbellsci.com.br Email: sales@csafrica.co.za Website: Website: www.campbellsci.com.br www.campbellscientific.co.za...