background image

 
 

Sutron

 

Corporation

 

SDI

TB

 

Users

 

Manual

  

 

 

Rev.

 

1.1

   

 

  

5/24/2018

 

         

pg.

 

15

 

 

 

 

Appendix

 

A:

  

Specifications

 

&

 

Ordering

 

Information

 

 

MECHANICAL

 

/ENVIRONMENTAL

 

Enclosure

  

Potted

 

enclosure

 

for

 

humid

 

environments

 

Dimensions

 

3

 

x

 

1.5

 

x

 

1.5

 

inches

 

Weight

  

~60gms

 

Temperature

 

40C

 

to

 

+60C

 

Connector

 

5

 

pin

 

screw

 

less

 

connector

  

 

POWER

 

Input

 

Voltage

  

DC

 

4v

20v

 

Initial

 

(capacitor

 

discharged)

 

Power

 

up

 

delay

  

~2

 

minutes

    

Internal

 

backup

 

power

 

run

 

time

 

~10

 

hours

   

Internal

 

backup

 

power

 

charge

 

time

  

~18

 

hours

 

Internal

 

backup

 

power

 

charging

 

current

 

25mA

 

(fully

 

discharged)

 

to

 

100uA

 

(fully

 

charged)

 

Quiescent

 

Current

  

<

 

100

 

uA

 

@12v

 

(once

 

fully

 

charged)

 

 

COMMUNICTAION

 

Protocol

  

SDI

12

 

v1.3

 

(SDI

 

communication

 

will

 

be

 

disabled

 

when

 

running

 

off

 

internal

 

backup

 

power)

  

 

ORDERING

 

INFORMATION

 

Summary of Contents for 8800-1205

Page 1: ...SDI TB SDI 12 Tipping Bucket Interface with Smart Compensation Operations Maintenance Manual Part No 8800 1205 Revision 1 1 25 May 2018...

Page 2: ...Quick Start 3 2 1 Unpacking 3 2 2 Operation 4 2 3 Connections 7 2 4 Sensor Configuration 7 3 Command Reference 8 3 1 Standard SDI 12 commands 8 3 2 Extended SDI 12 commands 11 Appendix A Specificatio...

Page 3: ...et The SDI TB sensor has a backup power source that permits un interrupted operation for up to 10 hours in case SDI 12 power is lost 2 Quick Start 2 1 Unpacking Remove SDI TB sensor from the shipping...

Page 4: ...ly has been configured A user programmable debouncing duration can be configured to filter out noise during the voltage transitions as the switch makes breaks contact The SDI TB uses a configurable Bu...

Page 5: ...et size is used The SDI TB has an internal Real Time Clock RTC that is used to keep time and can be programmed to perform daily and annual rainfall resets The SDI TB has a built in rechargeable backup...

Page 6: ...c_last raw_ tip_year acc_year acc_daily acc_yest acc_last total accumulations since the last M command was issued Every time an M command is issued this parameter will be reset raw_ tip_year The SDI T...

Page 7: ...the address if needed The SDI TB has a default debouncing of 15ms If the bucket has a switch close time other than 15ms the appropriate debounce duration can be set using the XDBNC command If the tip...

Page 8: ...se Notes Query SDI Address A where a address Only one SDI 12 device should be connected to the bus since all will respond Acknowledge Active a A I Send Identification aI For a master the expected resp...

Page 9: ...mulation this year acc_daily Total accumulation today acc_yest Total accumulation Yesterday Ex 0 0 01 12 0 12 0 03 0 02 Returns the current accumulation values and resets the accumulated rainfall sinc...

Page 10: ...Sutron Corporation SDI TB Users Manual Rev 1 1 5 24 2018 pg 10...

Page 11: ...the XDT command is issued without any arguments eg aXDT the current time is returned without modifying the existing time Default 2012 01 01 00 00 0 hrs XDR Read Write daily rainfall reset time aXDR or...

Page 12: ...he compensation coefficients XCOMP are not provided then each tip is equal to bucket size If coefficients are provided then a 3rd order polynomial is used to convert tips into rainfall Default value 0...

Page 13: ...milliseconds This is used to filter out noisy tipping bucket outputs so that the switching noise is not counted as a tip The TB IN input must be held in the active state for atleast debounce_duration...

Page 14: ...e SDI TB implements a 3rd order polynomial to compensate for heavy rainfall rates If no coefficients are provided each tip bucket_size The polynomial is of the form Where inches of rain per hour XYA R...

Page 15: ...tor 5 pin screw less connector POWER Input Voltage DC 4v 20v Initial capacitor discharged Power up delay 2 minutes Internal backup power run time 10 hours Internal backup power charge time 18 hours In...

Page 16: ...estion on an interface we will work with you until we find a solution Sometimes a problem is application related Although we pride ourselves on handling 95 of application related questions over the ph...

Page 17: ...Sutron Corporation SDI TB Users Manual Rev 1 1 5 24 2018 pg 17...

Page 18: ...itions Sutron requires the return of the defective electronic products or parts to the factory to establish claim under this Warranty The customer shall pre pay transportation charges to the factory S...

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