Instruction/ maintenance manual of the product DB1 Campbell Manufacturing
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DB1 Liquid Level Measurement Sensor Revision: 12/07 Copyright © 1993-2007 Campbell Scientific, Inc..
Warranty and Assistance The DB1 LIQUID LEVEL MEASUREMENT SENSOR is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in m aterials and workmanship under norm al use and service for twelve (12) m onths from date of shipment unl ess specified otherwise.
DB1 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. Overview ...............................................................
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DB1 Liquid Level Measurement Sensor 1. Overview The double bubbler is a self-cali brating system for l iquid level m easurement. This manual focuses on water level measurement in stilling wells o r open channels, but the inform ation applies to other l iquids as well.
DB1 Liquid Level Measurement Sensor 2. Specifications Measurement Range: Option - 5 (0 to 5 psi/0 to 11.5 ft.) Option - 15 (0 to 15 psi/0 to 34.5 ft.) Option - 30 (0 to 30 psi/0 to 69 ft .) Maximum Overpressure Range: Option - 5 20 psi Option - 10 45 psi Option - 15 60 psi Transducer Accuracy: ± 0.
DB1 Liquid Level Measurement Sensor fluctuates between 5 and 15 ft (2.2 a nd 6.5 psi ), set the pressure regulator above 7 psi (read 10 psi) to ensure adequate pressure. Open the nitrogen bottle valve, set the p ressure regulator, an d adjust the nitrogen flow by adjusting t he two needle valves.
DB1 Liquid Level Measurement Sensor FIGURES 1 and 2. The DB1 System 4.
DB1 Liquid Level Measurement Sensor CR10(X) , CR1000, CR 800 CR850, 21X FIGURE 3. Wiring Diagram for DB1 5.
DB1 Liquid Level Measurement Sensor 5. Programming Every 60 seconds, the following program examples calcul ate the pressure transducer multiplier, measure the offset, and measure the liquid level. The average liquid level i s stored in final m emory every 15 m inutes.
DB1 Liquid Level Measurement Sensor C a s e 3 P o r t S e t ( 3 , 1 ) 'Open valve to atmosphere EndSelect Delay(0,150,MSEC) S u m = 0 For j = 1 To 25 'Take 25 pressure readings for each tube.
DB1 Liquid Level Measurement Sensor 3: Excitation with Delay (P22 ) 1: 1 EX Chan 2: 0 Delay w/EX (units=.01sec) 3: 150 Delay after EX (unit s=.01sec) 4: 0 mV Excit ation Subroutine 1 measures the pres.
DB1 Liquid Level Measurement Sensor 2: Z=F (P30) 1: 0 F 2: 0 Exponent of 10 3: 7 Z Loc [:SUM ] 3: Beginning of Loop (P87) 1: 0 Delay 2: 25 Loop Count 4: Full Bridge (P6) 1: 1 Rep 2: 23 25 mV 60 Hz rej.
DB1 Liquid Level Measurement Sensor 13: Do (P86) 1: 1 Call Subrouti ne 1 14: Z=X (P31) 1: 8 X Loc AVG LEVEL 2: 9-- Z Loc [:m V/V #1 ] 15: Do (P86) 1: 51-- Set low Port 1 16: End (P95) 17: Z=X-Y (P35) .
DB1 Liquid Level Measurement Sensor 6.1 Periodic Maintenance • Inspect submerged bubbler t ubes for sediment or ot her debris. Remove debris and clean tubes as required. • Replace submerged bubbler tubes if cracked or dama ged. • Replace nitrogen bottle every 2 to 3 months dependi ng on bubble rate.
DB1 Liquid Level Measurement Sensor 12 7. Replacement Parts Part # Description Qty. in DB1 5199 SWAK THREAD SEALANT 1 7397 TUBE FITTING ELL 1/4 O.D.x 1/8NPT 4 7558 NEEDLE VALVE ASSEMBLY 2 7561 2-WAY NC SOLENOID VALVE 3 7571 PLUG PIPE 1/8NPT TEFCOAT 2 6078 MOUNTING SCREW (6/32 x 2.
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Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 Nort h Logan, Utah 84 321 UNITED STATES www.campbellsci.com info@campbellsci.com Campbell Scientific Afri ca Pty. Lt d. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.
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If you have not bought Campbell Manufacturing DB1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Campbell Manufacturing DB1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Campbell Manufacturing DB1 you will learn all the available features of the product, as well as information on its operation. The information that you get Campbell Manufacturing DB1 will certainly help you make a decision on the purchase.
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