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Comptus A70-R, Instruction Manual

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A70-R

Rainfall Transmitter

Instruction Manual

Document # 1142H

ISO 9001 Registered

Comptus Inc

®

342 Lyndeboro Rd., New Boston, NH USA

Phone: 603 487-5512   Fax: 603 487-5513   E-mail: [email protected]

Comptus Inc

ISO 9001 Registered

®

Summary of Contents for A70-R

Page 1: ...nfall Transmitter Instruction Manual Document 1142H ISO 9001 Registered Comptus Inc 342 Lyndeboro Rd New Boston NH USA Phone 603 487 5512 Fax 603 487 5513 E mail sales comptus com Comptus Inc ISO 9001...

Page 2: ...t If bucket tips occur faster than the selected time period the output will remain continuously at full scale Running average and other signal output formats are available Contact Comptus for addition...

Page 3: ...eries with the 4 20 mA loop and derives its power from the loop Each display in the loop introduces a 2 5 volt drop A 24 Vdc source of excitation is recom mended for applications involving the A70 LPD...

Page 4: ...20 0103 22 0165 24 0262 Figure 4 Graph of Maximum Loop Resistance Figure 3 Component Layout voltage E xcitation M inim um E xcitation V oltage 10 14 18 22 26 300 100 0 200 R esistance T otal L oop 60...

Page 5: ...R METER OR COMPUTER X3 1 X3 2 X2 1 X2 2 X1 1 X1 2 HOT NEU GND A70 E POWER SUPPLY AC MAINS Figure 5 Transmitter Connection Diagram Figure 6 Multiple Transmitters Sharing One Power Supply NO POLARITY RA...

Page 6: ...he loop current from the Transmitter in ramp mode increases in a staircase like manner 1 for each 01 inch of rain See Figure 7 When 1 inch of rainfall is accumulated output signal is 20 mA the output...

Page 7: ...n mA An output of 8 mA indicates a 20 minute time period in rain detector mode Figure 8 Rain Detector Mode Transfer Function Figure 9 Rain Detector Timer Calibration 4 Current 12 8 mA 20 16 Loop Bucke...

Page 8: ...Zero Adjust 1 Move R to ON 2 Move U to ON 3 Move D to ON 4 Move R to OFF 5 Move U to OFF 6 Move D to OFF 7 Move Z to ON 8 Move U or D ON OFF as required 9 Move U or D to OFF 10 Move Z to OFF Gain Adj...

Page 9: ...ml 0 2 mm 6 48 ml 0 01 inch 8 24 ml 1 Wet rain gage surfaces 2 Refer to Table 2 Pour water into gage at rate of approximately 0 5 ml second 3 Check that bucket tips within 2 as averaged over 5 tips of...

Page 10: ...r piece of equipment This does two things First it requires you to organize the situation so it can be explained to another Secondly it may turn out that you are so familiar with the situation that yo...

Page 11: ...s any other liability in connection with the sale of its products THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE SOME STATES DO NOT ALL...

Page 12: ...12 342 Lyndeboro Rd New Boston NH USA Phone 603 487 5512 Fax 603 487 5513 E mail sales comptus com Comptus Inc ISO 9001 Registered...

Page 13: ...Lyndeboro Rd New Boston NH USA Phone 603 487 5512 Fax 603 487 5513 E mail sales comptus com Comptus Inc ISO 9001 Registered IMPORTANT Please check your order on re ceipt to be certain all listed acce...

Page 14: ...14 342 Lyndeboro Rd New Boston NH USA Phone 603 487 5512 Fax 603 487 5513 E mail sales comptus com Comptus Inc ISO 9001 Registered...

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