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M1, C1, MC1, CC1

Perform a differential voltage measurement on channel AN2 with respect to channel AN3. +2.5V, but the
voltage on both AN2 and AN3 must be between 0 and 5V.

M2, C2, MC2, CC2

Measure ratio of AN1 voltage to Vref. ( AN1 / Vref)

M3, C3, MC3, CC3

Measure Frequency on channel DIN on a time-scale of 1 second.

M4, C4, MC4, CC4

Perform a differential voltage measurement on channel AN1 with respect to channel AN4. +2.5V, but the
voltage on both AN1 and AN4 must be between 0 and 5V.

M5, C5, MC5, CC5

Measure ratio of AN2 voltage to Vref

M6, C6, MC6, CC6

Measure Voltage on channel AN4. Turn On SW-12volts 100milli-seconds before measurement

M7, C7, MC7, CC7

Measure Voltage on channel AN4. Turn On SW-5volts 100milli-seconds before measurement

M8, C8, MC8, CC8

Measure Period of a signal on channel DIN with maximum Period of three seconds

M9, C9, MC9, CC9

Measure logic level of channel AN4. A low returns 0, and a high returns 1.

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Содержание AnalogPlus SDI-12 6661-1248-1

Страница 1: ...DI 12 ANALOG PLUS MODEL 6661 1248 1 OPERATIONS MAINTENANCEMANUAL Part No 8800 1145 Revision D 15 Oct 2010 Sutron Corporation 22400 Davis Drive Sterling Virginia 20164 TEL 703 406 2800 http www sutron com ...

Страница 2: ......

Страница 3: ...5 MC5 CC5 8 M6 C6 MC6 CC6 8 M7 C7 MC7 CC7 8 M8 C8 MC8 CC8 8 M9 C9 MC9 CC9 8 4 Measurements 9 Setting a Measurement Quick Set up With Default Parameters 9 Voltage Measurement Single ended 9 Voltage Measurement Differential 9 Ratiometric Measurement 9 Tipping Bucket Measurement 10 Counts Measurement 10 Frequency Measurement 10 Period Measurement 10 Quadrature Shaft Encoder Measurement 11 Notes on Ha...

Страница 4: ...mendations 25 Analog measurement Parameters 25 Channel Gain Buffering 25 Averaging Filtering 25 Vref warm up time 26 Switched voltage and Switched voltage warm up time 26 Example Setup Tutorials 26 AT RH Probe 26 Continuously Powered 26 Powered for measurements only 27 Air Temperature Sensor 27 4 20mA Output Sensor 28 6 Troubleshooting and Maintenance 29 Troubleshooting 29 Maintenance 29 7 Specifi...

Страница 5: ... Tel 703 406 2800 http www sutron com APPENDIX C Dimensions 39 APPENDIX D Sutron Customer Service Policy 40 APPENDIX E Commercial Warranty 41 SUTRON MANUFACTURED EQUIPMENT 41 NON SUTRON MANUFACTURED EQUIPMENT 41 REPAIR AND RETURN POLICY 41 EXTENDED WARRANTY AND ON SITE MAINTENANCE 41 ...

Страница 6: ......

Страница 7: ...ors bridges and potentiometers o 24 bit A D converter o 0 5V input range o Programmable gain 1 to 128 user specified or Automatic gain o Simultaneous 50Hz and 60Hz noise rejection One digital input with selectable pull up or pull down to support switch closure type inputs Additional digital input for 0 5 V signals shared with Analog channel 4 Frequency measurement 1 Hz to 8 kHz Counts measurement ...

Страница 8: ...most data recorders when they are measuring and the unit will return the four voltage readings AN1 AN2 AN3 AN4 If using with other SDI 12 sensors then the unit will need to be set to a unique address This is done with the change address command aAb where a is current address and b is the new address The unit needs to be only SDI 12 module on the bus at address a when this command is issued or you ...

Страница 9: ...on to the World Sutron Corporation Tel 703 406 2800 http www sutron com If you need more than a 0 5V single ended voltage reading then refer to the measurements section of the manual for further details on configuring the different measurement types ...

Страница 10: ... it supports If the SDI 12 AnalogPlus module receives a command it does not support no reply is made The reply to a measurement command M will have one of two forms a0000 Where a is the address and the 0000 indicates that there is no further message from SDI 12 AnalogPlus module to send Or atttn followed by a Where a is the address ttt is the amount of time in seconds the SDI 12 AnalogPlus module ...

Страница 11: ...E The SDI 12 AnalogPlus module will not respond if the command is invalid As an example the following command would set the SDI 12 AnalogPlus module address to 5 0A5 Subsequently the address can be set to a different address 9 for example by the command 5A9 Verifying the Address and Operation The SDI 12 AnalogPlus module will respond with an identifying message when it receives the send identifica...

Страница 12: ... The measurement command classes with CRC 16 MC and CC offer additional data integrity checking over the non CRC 16 commands M and C The non CRC 16 commands offer data integrity checking in the form of parity and the SDI 12 command structure The CRC 16 commands offer some additional data integrity through the addition of a CRC 16 Since the CRC 16 commands are brand new in SDI 12 version 1 3 not as...

Страница 13: ...d other concurrent measurement with CRC 16 such as CC1 CC2 etc This unit maintains symmetry across all four classes of commands that is it returns the same information to a C1 as it does to a M1 or a MC1 or a CC1 Remember to issue the aD0 Command after the measurement is complete in order to retrieve the data Factory Programmed Default Measurements From the factory the following commands will make...

Страница 14: ...measurement on channel AN1 with respect to channel AN4 2 5V but the voltage on both AN1 and AN4 must be between 0 and 5V M5 C5 MC5 CC5 Measure ratio of AN2 voltage to Vref M6 C6 MC6 CC6 Measure Voltage on channel AN4 Turn On SW 12volts 100milli seconds before measurement M7 C7 MC7 CC7 Measure Voltage on channel AN4 Turn On SW 5volts 100milli seconds before measurement M8 C8 MC8 CC8 Measure Period ...

Страница 15: ...nnel AN2 and with the factory defaults for slope 1 00 offset 0 Averaging time 0 067seconds Vref warm up time 0 010 seconds no switched voltage un buffered input and auto gain Voltage Measurement Differential To set up a differential voltage measurement on any of the 2 out of 4 Analog channels issue the SDI command aXVm p n where a SDI address of module m Measurement number M command number 1 9 p M...

Страница 16: ...tandby mode in that it is continuously accumulating tips Measurements return the current accumulation total Counts Measurement To measure Counts on channel D issue the SDI 12 command aXCm FD where a SDI 12 address of module m Measurement number M command number 1 9 For example 1XC4 FD will configure the M4 command in the module at SDI 12 address 1 to measure the number of counts with the factory d...

Страница 17: ...e will be a status byte that will be one of the following 0 Okay 64 Level has never been Set 128 Shaft Over speed detected 192 Level has never been set and Shaft Over speed has been detected Notes on Handar 436 Quadrature Ecoder any switch closure output encoders The Handar 436 encoder has open collector switch closure outputs Since it does not drive its outputs high an external pull up resistor i...

Страница 18: ...t where m Measurement number M command number 1 9 p Measurement channel t Threshold voltage 0 5Vmin 4 5V max for state determination Default is 1 25V For example for the module at SDI 12 address 1 if you want the M6 measurement to return 1 if voltage on AN3 is greater than or equal to 1 9 volts and 0 if less than 1 9 volts use 1XS6 3 1 9 ...

Страница 19: ...itched Voltage This can be set to 5volts or 12volts if sensor requires an external excitation voltage Switched Voltage Warm up time Time switched voltage should be present before taking a measurement SDI 12 set up command To set up a voltage measurement or change a parameter other than default you can use the SDI command aXVm p n s o t v w x i g where a SDI address of module m Measurement number M...

Страница 20: ...uted by X may or may not be factory defaults They depend on what M3 was configured for prior to this set up If M3 is set for something other than voltage then parameters substituted by X will be default voltage measurement parameters If M3 is set to measure voltage and you need to change just few parameters say Vref warm up time to 30 milli seconds use 1XV3 X X X X X 0 03 Verification and Reading ...

Страница 21: ...ned on before taking a measurement Switched Voltage This can be set to 5volts or 12volts if sensor requires an external excitation voltage Switched Voltage Warm up time Time switched voltage should be present before taking a measurement SDI 12 set up command To set up a Ratio measurement or change a parameter other than default you can use the SDI command aXRm p n s o t v w x i g Where a SDI addre...

Страница 22: ...commands shown above will also do the same but the parameters substituted by X may or may not be factory defaults It depends on what the M5 command is programmed for prior to this set up If M5 is set for something other than Ratio then parameters substituted by X will be default Ratio measurement parameters If M5 is set to measure Ratio and you need to change just few parameters say Vref warm up t...

Страница 23: ...t Initial count Default is 0 v switching de bounce time Default is 0 020 i e 20mS i L Enable internal pull down H Enable internal pull up O floating no pull up or pull down Default is H Examples Consider setting M4 to measure tipping bucket in SDI 12 module at address 1 To configure M4 to measure rain fall with the factory default parameters use 1XB4 FD Which will configure the M4 command in the m...

Страница 24: ...measured meaning if de bounce time is set to 1mS counts for a 2 KHz signal will be filtered out since the time between input transitions is less than 1mS i L Enable internal pull down H Enable internal pull up O floating no pull up or pull down This parameter is valid only when channel is D Otherwise it is ignored and taken as O by default it is O for both the channels Examples Consider configurin...

Страница 25: ...t frequency to an engineering unit m s or f s o Offset default is 0 00 A constant value to be added to the result after adjusting it with Slope p Measurement channel D for DIN and 4 for AN4 Default is D i e DIN i L Enable internal pull down H Enable internal pull up O floating no pull up or pull down This parameter is valid only when the channel is D otherwise it is ignored and taken as O by defau...

Страница 26: ...other than default use aXPm t s o p i v w x Where a SDI address of module m Measurement number M command number 1 9 t Pulse wait time out default is 1 1 second s Slope default is 1 00 It is a multiplier to convert Time period to an engineering unit o Offset default is 0 00 A constant value to be added to the result after adjusting it with Slope p Measurement channel D for DIN and 4 for AN4 Default...

Страница 27: ...e period 2 aXGm 1XG4 command if you are not sure whether Mm measures Time period or something else Refer appendix A for description on XGm command Quadrature Shaft Encoder Measurement To measure Quadrature Counts such as from Quadrature shaft encoder connect the two Quadrature output lines to channel DIN and AN4 and issue the SDI 12 extended command aXQm FD Where a SDI 12 address of module m Measu...

Страница 28: ...whichever is the first one from M1 through M9 Scale Factor Scale factor is used to convert quadrature counts into desired units in other words it s the least count of measurement Scale Factor Wheel circumference Counts in 1 rotation For example if shaft wheel is 1ft in circumference and one complete rotation gives 100 quadrature counts Scale Factor 1 100 0 01 In order to get the result s in metric...

Страница 29: ...are Using 0XQS 2 in later scenario will change the measurement time for M3 measurement not for M4 i e whichever is the first one from M1 through M9 Status Byte The last byte in the response to an aD0 command is the status byte It will be one of the following values 0 No errors 64 The Level has never been Set 128 Shaft Over speed has been detected 192 BOTH the Level has never been set and a Shaft O...

Страница 30: ... well during any M command S other value no effect Note There is only one switched voltage terminal connection Do not connect a 5V only device to the switched voltage and then perform a measurement that has been configured to use a 12V switched voltage because 12V would then be applied to the 5V device Resetting to a Factory Default Configuration The reset to factory defaults command provides a me...

Страница 31: ...t be in the 0 to 5V range referenced to the module s ground The unit can measure voltages in this range when it is in the unbuffered mode In the unbuffered mode the input impedance varies with the gain utilized The table below lists the typical input impedance for the different Gains and input ranges Gain Input range Input Impedance typical 1 0 5V 2 5V 4 M ohm 2 1 25V 2 M ohm 4 625 mV 1 M ohm 8 31...

Страница 32: ...l address of the module As shipped from the factory this will be the number zero 0 AT RH Probe The 5600 0315 AT RH probe needs a supply voltage of at least 3 5V and will accept supply voltages up to 16V without any problems It provides two 0 1V outputs Since this sensor can run off of 5 Volts or 12 Volts we have the choice of switched 5 switched 12 or a continuous 5V or 12V The choice would depend...

Страница 33: ...me And it says to perform the measurement unbuffered with an automatic gain To read percent relative humidity the data recorder would issue the aM2 command and then about 4 seconds later it would issue the aD0 command to read back the percent relative humidity Air Temperature Sensor The 5600 0020 Air Temperature Sensor includes a thermilinear network that produces a voltage division based upon the...

Страница 34: ...ue sensing resistor that can be used is 100 ohms Note Even though the 100 ohm resistor would give the highest resolution the SDI 12 AnalogPlus module has sufficient excess resolution that a smaller sensing resistor could be utilized without degrading total sensor accuracy Connect the sensor s positive input to the SW D voltage connection and the sensor s negative side to the AN4 analog input AN4 w...

Страница 35: ... command to make sure the sensor is responding to the proper address if not double check internal address dip switches since on power up they override any address set by the software Command or address is wrong case all commands are capital letters make sure address is proper case and commands are upper case Garbled data Multiple sensors set to the same address check address settings of all SDI 12...

Страница 36: ...ble high impedance input buffer 0 05 V to 3 5V Analog Accuracy 0 02 FS 25 C Temperature Coefficient 5 ppm C typ 10 ppm C max Shared input One analog input can be configured to measure digital inputs up to 8 kHz Dedicated Digital input 1 Up to 8 kHz Programmable 20 k Ohm pull up for switch closure inputs Input Filtering Digital inputs support programmable de bounce filtering Reference output 2 5V r...

Страница 37: ...Voltage on AN1 w r t ground x Voltage on AN2 w r t ground y Voltage on AN3 w r t ground z Voltage on AN4 w r t ground if it is aMC or aCC command then CRC is appended after z Configurable Measurements aM1 aC1 aM2 aC2 aM3 aC3 aM4 aC4 aM5 aC5 aM6 aC6 aM7 aC7 aM8 aC8 aM9 aC9 a0tt1 CR LF if M cmd a0tt01 CR LF if C cmd where tt is represents number of seconds that depends upon Vref time SW D voltage ti...

Страница 38: ...ues for all the remaining parameters Counts Reading set up aXCm m Measurement number M command number 1 9 a NC CR LF or a s o p t v i CR LF If this M or C number is not set for Counts meas otherwise Returns the current values in set up Set up measurement with factory defaults aXCm FD m Measurement number M command number 1 9 a00026 CR LF Use aXCm Command to verify the set up Sets Counts measuremen...

Страница 39: ...CR LF Use aXFm Command to verify the set up Type uppercase X to leave a parameter unchanged e g aXFm X 2 4 will change slope to 2 4 and leaving all other parameters unchanged default if never programmed aXFm 2 0 X FD will leave slope unchanged default if never programmed sets Measurement time to 2sec and puts factory default values for all the remaining parameters Get Set up aXG a m1 m2 m3 m4 m5 m...

Страница 40: ...surement with factory defaults aXQm FD m Measurement number M command number 1 9 Set up measurement with specific parameters aXQm o s t m Measurement number M command number 1 9 o Offset Default is 0 00 s Slope Scale factor Default is 0 01 t Measurement time Default is 0 Setting this to 1 or more averages 10 readings second a NC CR LF or a o s t CR LF a00023 CR LF a00023 CR LF If this M or C numbe...

Страница 41: ...g set up aXVm m Measurement number M command number 1 9 a NC CR LF or a p n s o t v i g CR LF If this M or C number is not set for Voltage meas otherwise Returns the current values in set up Set up measurement with factory defaults aXVm p FD m Measurement number M command number 1 9 p Measurement channel refer note 1 a00027 CR LF Sets Voltage measurement with ground as reference channel slope 1 00...

Страница 42: ...power mode a0012 CR LF A successive aD0 Gives a w x CR LF Note1 For channel numbers use p or n 1 AN1 p or n 2 AN2 p or n 3 AN3 p or n 4 AN4 p or n D DIGITAL IN p or n V Vref p or n v Vref with resistance alt connection for internal use p or n G GND p or n g GND with resistance alt connection for internal use Note 2 Input Types Analog i U non buffered i B buffered Digital i M Low voltage level sign...

Страница 43: ... unit s address and ending with an exclamation point Do not forget the exclamation point After entering the command press ENTER to send the command out over the SDI 12 bus The 8200 will then display the response to the command Logging data from the M1 or M2 commands or from addresses above 9 Beginning with version 3 3 of the software for the 8200 family SDI 12 sensors can be renamed to allow any S...

Страница 44: ...y at least 30 seconds with respect to the other data logger Setup two Sutron Data Recorders with two SDI 12 AnalogPlus modules This setup allows for two SDI 12 AnalogPlus module sensors to be logged in two Sutron Data recorders at the same time Connect the SDI 12 ground line to both data recorders and both SDI 12 AnalogPlus modules Connect the SDI 12 Data line to both data recorders and both SDI 1...

Страница 45: ...Bringing the Benefits of Real Time Data Collection to the World Sutron Corporation Tel 703 406 2800 http www sutron com APPENDIX C Dimensions DIMENSIONS IN INCHES ...

Страница 46: ...til we find a solution Sometimes a problem is application related Although we pride ourselves on handling 95 of application related questions over the phone we maintain constant contact with our Integrated Systems Division and Engineering Division for additional assistance Introductory Training Training is an important part of the Sutron Customer Service philosophy The Sutron training policy is si...

Страница 47: ...r shall prepay transportation charges to the factory Sutron shall pay transportation for the return of the repaired equipment to the customer when the validity of the damage claim has been established Otherwise Sutron will prepay shipment and bill the customer All shipments shall be accomplished by best way surface freight Sutron shall in no event assume any responsibility for repairs or alteratio...

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