manualshive.com logo in svg

Stevens Smart PT, Руководство пользователя

Поделиться
Скачать
Stevens Smart PT Скачать руководство пользователя страница 13

 

13

 

 

 

 

 
 

 

 

Restoring the Smart PT to the default configuration 

It may be useful to restore the Smart PT to the factory default configuration. 

Command 

Response 

Description 

aXD_*! 

arestore factory configuration... 

Restore the sensor to a 

factory default state. Stored 

data will be lost. Sensor 

retains factory calibration. 

 

 

 

 

Содержание Smart PT

Страница 1: ...o automatically record peak crest levels calculate average level as well as standard deviation all without complex datalogger configurations Other advanced features include adjustable fluid density automatic water temperature density compensation and adjustable local gravity compensation An M14 1 threaded sensor head allows for easy mounting to pipes An included threaded cap offers a loop hole whi...

Страница 2: ...ced SDI 12 Commands 9 Configuring pressure depth and temperature units 9 Configuring gravity compensation 10 Configuring density compensation 11 Configuring the Smart PT for top of casing or reference relative measurements 11 Restoring the Smart PT to the default configuration 13 Using the Smart Sampling features and digital crest gage mode 14 Example configurations for average and daily maximum 1...

Страница 3: ... depends on elevation and atmospheric pressure 51168 303 1 4 4 13 90 51168 304 2 10 33 140 51168 305 4 30 100 240 51168 306 10 90 300 390 51168 307 20 190 630 390 32142 Recommended Yearly Calibration Performance Characteristics Parameter Unit Pressure accuracy 0 1 Full scale Long term stability max 0 15 per year Full scale Temperature accuracy 0 25 C Average current consumption SDI 12 0 9 mA Avera...

Страница 4: ...ube The vented version of the Smart PT has a tube running the length of the cable This allows the water pressure on the front of the transducer to reference against barometric pressure The Smart PT ships with a black cap over end of the vent tube to prevent moisture ingress and with a separate desiccant capsule Before installation the dessicant capsule needs to be connected and the yellow cap remo...

Страница 5: ...alibrated every year Before returning the sensor for calibration or repair navigate to the Support page at http www stevenswater com and fill out the RMA form If the sensor was used in contaminated water the sensor must be cleaned before shipping Coil and zip tie the sensor cable before shipping ...

Страница 6: ...ast few digits of the pressure reading Basic SDI 12 Commands Command Response Description a a CR LF Acknowledge active a sensor address aI a14ccccccccmmmmmmvvvxxx xx CR LF Example Vented 014STEVENSW_SVP01_VT_1234567890 Non vented 014STEVENSW_SVP01_NV_1234567890 Send identification a sensor address 14 SDI 12 protocol version ccc manufacturer identification mmm sensor identification vvv sensor versi...

Страница 7: ... min and max since the last M1 command a sensor address min lowest pressure encountered since last M1 reading max highest pressure encountered since last M1 reading tmin seconds elapsed since the minimum reported in min tmax seconds elapsed since the maximum reported in max See the section Using Excel to extract timestamped crest values from a data set for more information on using tmin and tmax a...

Страница 8: ...Send average and standard deviation since the last M2 command a sensor address avg average of all pressure samples taken since the last M2 reading stddev standard deviation of all pressure samples taken since the last M2 reading nsamples number of samples taken since the last M2 reading ...

Страница 9: ...d Smart PT only reports in units of pressure Because it measures the weight of the water column plus the atmosphere it wouldn t be useful to report units of depth Command Response Description aXR_PUNITS aPUNITS UUU CR LF Example aXR_PUNITS aPUNITS M Query pressure units UUU pressure units aXW_PUNITS_UUU aPUNITS UUU CR LF Example aXW_PUNITS_M aPUNITS M Configure pressure units uuu pressure units me...

Страница 10: ...l gravitational acceleration https www wolframalpha com input i gravity portland oregon When the Smart PT is configured to report in units of pressure rather than depth no gravity compensation will be applied Command Response Description aXR_GRAVITY aGRAVITY vvv CR LF Example aXR_GRAVITY aGRAVITY 9 80665 Query gravity a sensor address vvv gravitational acceleration aXW_GRAVITY_vvv aGRAVITY vvv Exa...

Страница 11: ...sity a sensor address vvv density Default 1 g mL Configuring the Smart PT for top of casing or reference relative measurements The Smart PT can be configured to report depth measurements from actual or surveyed top of casing Following this command table is an example Command Response Description aXR_TOC_vvv aTOC vvv CR LF Query top of casing aXW_TOC_vvv aTOC vvv Example aXW_TOC_1 aTOC 1 If non zer...

Страница 12: ... set the offset parameter to 15 The Smart PT will report the sensed depth plus the offset for a reported value of 70 aXW_OFFSET_15 To report distance from water to top of casing set toc to 75 The Smart PT will return the TOC value minus sensed depth for a reported value of 20 aXW_TOC_75 To report distance from the water surface to bottom of well set offset to 25 The Smart PT will return the sensed...

Страница 13: ...ion It may be useful to restore the Smart PT to the factory default configuration Command Response Description aXD_ arestore factory configuration Restore the sensor to a factory default state Stored data will be lost Sensor retains factory calibration ...

Страница 14: ...s also able to report average and standard deviation over the logging interval This may be useful for integrating data from rough water and quantifying surface roughness Instead of a sliding window the Smart PT uses a numerically stable online variance algorithm Welford 1962 to maintain the mean and standard deviation since the last time those values were queried Example configurations for average...

Страница 15: ...he event occurred In the example below a crest event occurred at 8 24 20 AM The sensor was polled by a datalogger at 8 30 00 AM at which time the sensor reported the crest event as happening 340 seconds in the past Logger timestamp Min Max tMin tMax Time of crest A3 TIME 0 0 E3 8 30 00 AM 1004 4996 33 340 8 24 20 AM 8 40 00 AM 1004 4995 23 324 8 34 36 AM 8 50 00 AM 1003 4999 47 310 8 44 50 AM 9 00...

Страница 16: ...B Calculation of depth Depth is computed as follows depth depth 9 80665 gravity 1000 density If density is set to 1 the Smart PT will apply a temperature correction density 999 83952 16 945176 t 0079870401 t t 0 000046170461 t t t 0 00000010556302 t t t t 0 00000000008054253 t t t t t 1 016897850 t If density is set to a value other than 1 that value will override the temperature correction If top...

Отзывы:

Нет отзывов

Бренды по названию

Популярные бренды

Загрузить еще бренды