DPS5000 User Manual 855 KB
Contents
1. Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 MIN_RANGE 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MIN_RANGE 7 0 R X Bit 31 0 MIN_RANGE 31 0 Read only the lower limit of the sensor pressure range in the pressure units defined by the PRES_UNIT register address 84 Oxn n Number type float 3 3 16 Address 72 CAL_DATE Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 YEAR 15 8 R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 YEAR 7 0 R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 MONTH 7 0 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 DAY 7 0 R W X Bit31 16 YEAR 15 0 Read write the year in which the sensor was calibrated This value may be updated by the user following re calibration of the sensor Oxn n Number type unsigned integer Bit 15 8 MONTH 7 0 Read write the month in which the sensor was calibrated This value may be updated by the user following re calibration of the sensor Oxn n Number type unsigned bytes Bit 7 0 DAY 7 0 Read write the day on which the sensor was calibrated This value may be updated by th e user following re calibration of the sensor Oxn n Number type unsigned byte 3 3 17 Address 73 MAX_ADC_PRES Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 MAX_ADC_PRES 31 24 R X Bit 23 Bi2. Oxn n Number type extended ASCII A Absolute D Differential G Gauge 3 3 23 Address 79 VERSION Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 FIELD_1 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 FIELD_2 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 FIELD_3 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 FIELD_4 7 0 R X Bit31 24 FIELD_1 7 0 Read only first software version field Oxn n Number type unsigned byte Bit 23 16 FIELD_2 7 0 Read only second software version field Oxn n Number type unsigned byte Bit 15 8 FIELD_3 7 0 Read only third software version field Oxn n Number type unsigned byte Bit 7 0 FIELD_4 7 0 Read only fourth software version field Oxn n Number type unsigned byte 3 3 24 Address 82 AVERAGE Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 P_AVE 7 0 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 T_AVE 7 0 R W X Bit 31 16 Unused read write Bit 15 8 P_AVE 7 0 Read write defines the number of individual pressure ADC data 16 samples averaged to p
3. 4 2 4 3 4 3 1 The sensor power is cycled and the sensor returns to the power up state e User interaction results in a new data request being internally generated and the sensor re enters the acquire state CAUTION Due to the low power consumption of the DPS 5000 sensors the I C bus pull up resistors may provide sufficient power to maintain the sensor in the standby state when the I2C bus SUPPLY line is disconnected from the sensor To ensure the sensor is correctly powered down disconnect the sensor completely from the 2C bus or turn off the I2C bus network power supply Figure 7 shows the legend used within this section to describe the user interactions with the sensor Register name Register bit position STATUS RSTI1 0 lt a ee gt Register bit field Register address Figure 7 Interaction legend Reading the pressure and temperature The DPS 5000 sensors directly provide compensated pressure and temperature data via the COMP_PRES and COMP_TEMP registers avoiding the need for the user to undertake any additional calculations Unless modified by the user see section 4 4 3 the unit of pressure is that used by the manufacturer during calibration of the sensor and defined in the PRES_UNIT register The unit of temperature is always C The following steps should be used to read the pressure and temperature data Check the status of the new data available flag Read STATUS CONV lt 0 0 gt 0b1 new d
4. Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 MAX_ADC_TEMP 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 MAX_ADC_TEMP 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MAX_ADC_TEMP 7 0 R X Bit 31 0 MAX _ADC_TEMP 31 0 Read only if the current value of the ADC_TEMP register address 4 exceeds this value VALID 1 bit 2 of the STATUS register address 0 will be cleared Number type unsigned word 3 3 20 Address 76 MIN_ADC_TEMP Oxn n Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 MIN _ADC_TEMP 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 MIN _ADC_TEMP 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 MIN _ADC_TEMP 15 8 R X 14 May 2015 K0582 Revision B Bit7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MIN _ADC_TEMP 7 0 R X Bit 31 0 MIN_ADC_TEMP 31 0 Read only if the current value of the ADC_TEMP register address 4 is less than this value VALID 1 bit 2 of the STATUS register address 0 will be cleared Oxn n Number type unsigned word 3 3 21 Address 77 SERIAL Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 SERIAL 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit
5. Each sensor is supplied with the following documentation d Hazardous area installation instructions Document K0546 for the external sensor variant Document K0547 for the internal sensor variant e Calibration certificate 2 Only supplied with hazardous area certified sensors K0582 Revision B May 2015 1 2 2 2 3 Installation General Before installing the DPS 5000 series sensor Ensure that the sensor is the correct type for the application and will not be subject to pressures or media outside those specified on the applicable datasheet or specification drawing e If the sensor is being installed in a hazardous area observe the installation instructions given in the supplied document K0546 or KO547 Read all relevant instructions and procedures in the applicable system installation manual To prevent contamination prior to installation keep the sensor in the original packaging with all the supplied covers fitted When installing the internal variant to prevent possible damage avoid touching or applying excessive force to the exposed PCB assemblies WARNING Do not interchange sensors between an oil system and a system that uses fuel or gas This can cause an explosion resulting in death or injury and or damage to equipment High pressures and extremes of temperature are dangerous De pressurize and allow components to attain an acceptable temperature in systems where high pressures and high or low tempera
6. 19 Bit 18 Bit 17 Bit 16 SERIAL 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 SERIAL 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SERIAL 7 0 R X Bit 31 0 SERIAL 31 0 Read only the sensor manufacturer s serial number Oxn n Number type unsigned word 3 3 22 Address 78 CONFIG Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved R 0 R 0 R 0 R 0 R 0 R 0 R 0 R 0 Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved R 0 R 0 R 0 R 0 R 0 R 0 R 0 R 0 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 ASYNC STANDBY TRIGGER Reserved Reserved Reserved Reserved Reserved R X R X R X R 0 R 0 R 0 R 0 R 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 TYPE 7 0 R X Bit31 16 Reserved read only Bit 15 ASYNC Read only optional asynchronous serial communication capability ObO Available Ob1 Not available Bit 14 STANDBY Read only low power stand by mode capability ObO Available Ob1 Not available Bit 13 TRIGGER Read only external wake up trigger capability ObO Not available Ob1 Available Bit 12 8 Reserved read only Bit 7 0 TYPE 7 0 Read only ASCII character defining the sensor type KO582 Revision B May 2015 15
7. Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 TARE_VALUE 15 8 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit3 Bit 2 Bit 1 Bit 0 TARE_VALUE 7 0 R W X Bit 31 0 TARE_VALUE 31 0 Read write the value of this regi ster is used to modify the value of the COMP_PRES register address 1 when the sensor tare mode is selected by setting TARE bit 12 of the STATUS register address 0 Oxn n Number type float 3 3 30 Addresses 128 157 Pressure coefficients The pressure coefficient registers contain a total of 1 J 1 contiguous pressure coefficients where and J represent the values of the PP_FIT 7 0 and PT_FIT 7 0 bits of the COEF_DIM register address 67 Each coefficient register is bit mapped as fo lows Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Kew 31 24 R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 Kew 23 16 R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Kew 15 8 R W X KO582 Revision B May 2015 19 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Krus 7 0 R W X Bit 31 0 Kew 31 0 Read only Oxn n Number type float 3 3 31 Addresses 158 187 Temperature coefficients The temperature coefficient registers contain a total of 1 J 1 contiguous temperature coefficients where and J represent the val
8. RASE 4 ADC_TEMP 68 GAIN ADJ AEE 5 ACCESS 69 OFFSET_ADJ registers 6 MVOLT_PRES 70 MAX_RANGE 7 MVOLT_TEMP 71 MIN_RANGE 8 Reserved 72 CAL_DATE 157 73 MAX_ADC_PRES 158 74 MIN_ADC_PRES 75 MAX_ADC_TEMP 76 MIN_ADC_TEMP Up to 30 77 SERIAL temperature 78 CONFIG coefficient 79 VERSION registers 80 Reserved 81 Reserved 82 AVERAGE 187 83 PRES_CONV 188 Unused 84 PRES_UNIT 85 DELAY 86 SPEC_DWG 87 TARE_VALUE 88 Reserved 63 Reserved 127 Reserved 255 Unused Register descriptions Register bit table legend Table 3 Memory map The legend used for the bit tables within this section is shown in Figure 5 KO582 Revision B May 2015 R W R W Bit field name Bit type Bit status after reset Read only writes have no effect 0 Bit cleared Write only always reads as 0 1 Bit set Read and writeable X Bit unknown or may change Figure5 Bit table legend Not all bits within a register are available to the user Reserved bits always read as 0b0 and writes have no effect Unused bits are readable and writable but have no effect on the sensor operation 3 3 2 Address 0 STATUS Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved R 0 R 0 R 0 R 0 R 0 R 0 R 0 R 0 Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 Reserved Reserved Reserved Reserved Reserve
9. Serial data SDA Serial clock SCL Supply The sensor may be used standalone or as part of a network of compatible 12C bus devices CAUTION The DPS 5000 is intended for use within networks operated from a single supply at a voltage within the range 2 7 V to 3 6 V Operation outside these limits is not guaranteed and may damage the sensor The sensor interface includes 2 reserved signals These should be left open circuit as connecting to these signals may result in incorrect sensor operation SUPPLY gt SDA SCL SUPPLY OTHER lC BUS SENSOR 1 ENSOR sense psc S SENSOR 2 SENSOR N DEVICE Figure3 Typical l2C bus network The electrical connections to the sensors are colour coded as shown in Table 1 K0582 Revision B May 2015 3 Signal External variant Internal variant Plug pin NOTE Supply Red Red 1 Serial data Orange Yellow 2 Serial clock Black Green 3 Supply White Blue 4 Reserved Yellow amp Blue Orange amp Black 5 amp 6 Case Screen NOTE 1 The mating connector for the internal variant plug is a Molex Milli Grid connector system 6 pin crimp housing part number 0511100660 with crimp terminals part number 0503948051 or 0503948100 Table 1 Electrical connections Functional description Sensor communication The DPS 5000 series sensors appear on the 12C bus as a slave device containing a number of memory mapped registers that are used to control th
10. address Write 64 to 12C_ADDR ADDR 7 0 lt 66 7 0 gt iii Save the new l C bus address to non volatile memory and re lock the configuration data registers as described in section 4 4 1 iv Reset the sensor Either power cycle the sensor or Write 0b10 to STATUS RESET 1 0 lt 0 15 14 gt The sensor will now respond to the new C bus address Changing the auto update period All DPS 5000 sensors are supplied with the auto update period set to the default value of 100 ms The auto update period may be changed by the user by writing the desired new period to the DELAY register The allowable period is between 1 and 1999 ms in 1 ms increments For example to change the auto update period to 1 512 s Exit the automatic update mode if applicable Write ObO to STATUS AUTO lt 0 8 gt ii Unlock the configuration data registers as described in section 4 4 1 iii Update the auto update period Write 1512 to DELAY DELAY 15 0 lt 85 15 0 gt iv Save the new auto update period to non volatile memory if required and re lock the configuration data registers as described in section 4 4 1 9 A change of the sensor I2C bus address will not come into effect until the 12C_ADDR register has been modified copied to non volatile memory and the sensor is reset via the status register or by cycling the sensor power 10 change to the DELAY register will not come into effect whilst the sensor is in the auto update mode
11. 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 COMP_TEMP 7 0 R X Bit 31 0 COMP_TEMP 31 0 Read only the most recently updated compensated temperature value in C Reading this register whilst the sensor is in the auto update mode will clear the CONV bit 0 flag of the STATUS register address 0 Oxn n Number type float 3 3 5 Address 3 ADC_PRES Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 ADC_PRES 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 ADC_PRES 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 ADC_PRES 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ADC_PRES 7 0 R X Bit 31 0 ADC_PRES 31 0 Read only the most recently updated pressure ADC value This value is used to calculate the value held in the MVOLT_PRES register address 6 Reading this register whilst the sensor is in the auto update mode will clear the CONV bit 0 flag of the STATUS register address 0 Oxn n Number type unsigned word 8 May 2015 KO582 Revision B 3 3 6 Address 4 ADC_TEMP Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 ADC_TEMP 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 ADC_TEMP 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 ADC_TEMP 15 8 R X Bit 7 Bi
12. ADJ 31 24 R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 OFFSET _ADJ 23 16 R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 OFFSET _ADJ 15 8 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 OFFSET _ADJ 7 0 R W X Bit 31 0 OFFSET_ADJ 31 0 Read write the value of this regi ster is used to modify the value of the COMP_PRES register address 1 It is used in conjunction with the GAIN_ADJ register address 68 during user re calibration of the sensor Oxn n Number type float 0 0 Default value 3 3 14 Address 70 MAX_RANGE Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 MAX_RANGE 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 MAX_RANGE 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 MAX_RANGE 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MAX_RANGE 7 0 R X Bit 31 0 MAX_RANGE 31 0 Read only the upper limit of the sensor pressure range in the pressure units defined by the PRES_UNIT register address 84 Oxn n Number type float 3 3 15 Address 71 MIN_RANGE Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 IN_RANGE 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 IN_RANGE 23 16 R X 12 May 2015 K0582 Revision B
13. Bit 19 Bit 18 Bit 17 Bit 16 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 PRES_UNIT 7 0 R W X 6 Values between 8 and 255 are allowed but the maximum number of samples will remain at 128 K0582 Revision B May 2015 17 Bit 31 8 Bit 7 0 Unused read write PRES_UNIT 7 0 Read write defines the manufacturer s pressure unit for the values in the COMP_PRES MAX_RANGE and MIN_RANGE registers addresses 1 70 and 71 May be updated to define the user pressure units created using the PRES_CONV register address 83 Oxn n Number type unsigned byte 0 Undefined 1 mbar 2 bar 3 hPa 4 kPa 5 MPa 6 psi 7 mmHzO 8 inH20 9 ftH20 10 mH20 11 mmHg 12 inHg 13 kgf cm 14 atm 15 Undefined 255 Undefined 3 3 27 Address 85 DELAY Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9
14. Bit 8 DELAY 15 8 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 DELAY 7 0 R W X Bit31 16 Unused read write Bit 15 0 DELAY 15 0 Read write defines the delay in milliseconds between updates of the pressure and temperature readings when the sensor auto update mode is selected by setting AUTO bit 8 of the STATUS register address 0 Oxn n Number type unsigned integer 100 Default value 7 Values 0 and 15 to 255 are allowed but are undefined 8 Any value N within the range 0 to 65535 is allowed but the delay in milliseconds will be N mod 2000 which restricts the maximum delay to 1999 ms 18 May 2015 KO582 Revision B 3 3 28 Address 86 SPEC_DWG Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 SPEC_DWG 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 SPEC_DWG 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 SPEC_DWG 15 8 R X Bit 7 Bit 6 Bit5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SPEC_DWG 7 0 R X Bit 31 0 3 3 29 Address 87 TARE_VALUE SPEC_DWG 31 0 Read only the 4 digit specification drawing number of the sensor Oxn n Number type unsigned word Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 TARE_VALUE 31 24 R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 TARE_VALUE 23 16 R W X Bit 15 Bit 14 Bit 13
15. DC values are used to generate the updated pressure and temperature readings ObO Disabled 0b1 Enabled AUTO Read write used to enable the sensor auto update mode When enabled pressure and temperature readings are updated automatically at a rate determined by the value of the DELAY register address 85 ObO Disabled Ob1 Enabled Reserved read as 0 WRITE Write only used to transfer the current values of the configuration data registers to non volatile memory when WENB bit 3 is set ObO No action Ob1 Transfer data ADC_ON Read only indicates when the sensor ADC and bridge are active ObO Inactive Ob1 Active WENB Read only indicates the write status of the configuration data resisters It is set and cleared by writing to the ACCESS register address 5 ObO Not writable Ob1 Writable VALID 1 0 Read only used to indicate the status of the current values held in the COMP_PRES and COMP_TEMP registers addresses 1 and 2 Automatically cleared by reading the COMP_PRES COMP_TEMP ADC_PRES ADC_TEMP MVOLT_PRES or MVOLT_TEMP register addresses 1 2 3 4 6 and 7 respectively whilst the sensor is in the auto update mode Ob00 Error invalid pressure and temperature ADC values detected 0b01 Error invalid temperature ADC value detected 0b10 Error invalid pressure ADC value detected Ob11 Data valid CONV Read write used to trigger an update of the COMP_PRES and COMP_TEMP registers addresses 1 and 2 and to indi
16. DRESS ADDRESS JE BYTE 1 LSB BYTE n gt gt gt e gt lt gt gt gt gt e gt gt lt gt MASTER 1 BYTE WRITE MASTER n BYTE WRITE Figure 4 Typical l2C bus data transfers When reading from or writing to the sensor the master first performs a 1 byte data write to send the required register address to the sensor The master then performs either an n byte data read or write to transfer the data LSB first from or to the May 2015 KO582 Revision B 3 2 3 3 3 3 1 addressed register As the sensor registers are 32 bits wide the read and write transfers are generally 4 bytes long However 1 2 or 3 byte transfers are allowed Memory map The DPS 5000 sensor registers are mapped within a 1 kbyte memory space As each register is 4 bytes wide the register addresses range from 0 to 255 Not all the address space is available to the user some addresses are reserved whilst others are unused The reserved addresses cannot be written to and read as 0x00000000 Unused addresses cannot be written to and read as OxFFFFFFFF The registers are grouped into 3 blocks volatile data configuration data and coefficient data as shown in Table 3 Volatile data Configuration data Coefficient data Addr Register Addr Register Addr Register 0 STATUS 64 Reserved 128 1 COMP_PRES 65 Reserved 2 COMP_TEMP 66 12C_ADDR 3 ADC PRES 67 COEF FIT
17. Exit then re enter the auto update mode for the change to be applied KO582 Revision B May 2015 23 4 4 4 4 4 5 24 v Re enter the automatic update mode if applicable Write Ob1 to STATUS AUTO lt 0 8 gt CAUTION The automatic update period should be chosen with care to avoid new updates being requested before the data from the preceding request is available The update interval should be set to be longer than the sensor acquisition time see section 4 4 6 Failure to observe this precaution will result in the queue error flag STATUS QERR lt 0 10 gt being set and may result in invalid pressure and temperature data Changing the unit of pressure The DPS 5000 sensors can be supplied calibrated in a variety of pressure units As supplied the pressure value given in the COMP_PRES register and the sensor upper and lower pressure limits defined in the MAX_RANGE and MIN_RANGE registers will all be in the calibrated unit of pressure However the user may change the unit of pressure of the COMP_PRES register to an alternative unit of pressure For example if the sensor is supplied calibrated in bar and the required unit of pressure for the pressure readings is psi i Unlock the configuration data registers as described in section 4 4 1 ii Determine the appropriate conversion factor from Annex A and update the pressure unit conversion factor value Write 14 50377 to PRES_CONV PRES_CONV 31 0 lt 83 31 0 gt iii Save
18. FFSET_ADJ Address 70 MAX_RANGE Address 71 MIN_RANGE Address 72 CAL DATE Address 73 MAX ADC_PRES Address 74 MIN _ADC_ PRES Address 75 MAX _ADC_ TEMP Address 76 MIN _ADC_TEMP Address 77 SERIAL Address 78 CONFIG Address 79 VERSION Address 82 AVERAGE Address 83 PRES CONV Address 84 PRES_ UNIT Address 85 DELAY Address 86 SPEC_DWG Address 87 TARE VALUE Addresses 128 157 Pressure coefficients Addresses 158 187 Temperature coefficients May 2015 FF un nn NN PRE sp ppp RP LH PPP PPPE EEE PE ETE ray ray BP spall eel ll cect BB PB Bb BB BD PE oe BB 1 DOWOOOANNDA NHK PF FE I D D EH LO LO LO OO OO J O O1 O1 U1 amp N K0582 Revision B 4 Operational description 4 1 Operational states 4 2 Reading the pressure and temperature 4 3 Updating the pressure and temperature 43 1 Manual update 43 2 Automatic update 44 Updating the sensor configuration data registers 44 1 User modifiable registers 4 4 2 Modifying the 12C bus address 4 4 3 Changing the auto update period 444 Changing the unit of pressure 445 Reading relative pressure 4 4 6 Pressure and temperature SNR 447 Maximising the update rate 4 4 8 Pressure re calibration 5 Maintenance 5 1 Cleaning 5 2 Adjustment 5 3 Repair 5 4 Disposal Annex A Unit of pressure conversion factors List of figures Figure 1 External and internal DPS 5000 sensors General view Figure 2 Pressure connection
19. Figure 3 Typical 12C bus network Figure 4 Typical 12C bus data transfers Figure 5 Bit table legend Figure 6 Operational states Figure 7 Interaction legend Figure 8 Noise level correction factors List of tables Table 1 Table 2 Table 3 Table 4 K0582 Revision B Electrical connections 2C bus feature support Memory map User modifiable registers May 2015 20 20 21 21 21 22 22 22 23 23 24 24 25 26 26 27 27 28 28 28 29 DO EE FR vi Page left intentionally blank May 2015 K0582 Revision B 1 2 Introduction General The DPS 5000 series sensor is a microcontroller based smart pressure transducer that provides a digital output through an l2C bus interface The sensor is available as either an external or internal variant The external variant is a sealed device with the electrical connections made via an integral cable The internal variant is an open frame device with electrical connections made via an integral plug Figure 1 External and internal DPS 5000 sensors General view The DPS 5000 series sensors are low powered devices offering a high level of accuracy over a wide temperature range The 12C bus interface provides compensated pressure and temperature readings and allows the sensor operation to be software controlled Configuration The following options are available at the time of ordering a External or internal sensor variant b Pressure range c Pressure connector
20. GE Measurement amp Control DPS 5000 Series Sensors I2C bus Pressure Transducer User Manual K0582 English Druck Ltd Fir Tree Lane Groby Leicester LE6 OFH UK Tel 44 0 116 231 7100 Fax 44 0 116 231 7103 2015 General Electric Company All rights reserved Safety The manufacturer has designed this sensor to be safe when operated using the procedures detailed in this manual Do not use this sensor for any other purpose than that stated This manual contains operating and safety instructions that must be followed for safe operation and to maintain the sensor in a safe condition The safety instructions are either warnings or cautions issued to protect the user and the equipment from injury or damage Use qualified personnel and good engineering practice for all procedures in this manual Qualified personnel must have the necessary technical knowledge documentation special test equipment and tools to carry out required work on this sensor Pressure Do not apply pressure greater than the maximum safe working pressure to the sensor Toxic materials There are no known toxic materials used in the sensor Maintenance The sensor must be maintained using the manufacturer s procedures and these should be carried out by authorised service agents or the manufacturer s service departments Technical advice For technical advice contact the manufacturer EC Directives This sensor complies with the require
21. Hexadecimal number notation e g Ox3BFO The following data types are used in this document Type Bits Range Unsigned byte 8 0x00 0 to OxFF 255 Unsigned integer 16 0x0000 0 to OxFFFF 65535 Unsigned word 32 0x00000000 0 to OxFFFFFFFF 4294967295 Float 32 OxFF7FFFFF 3 4028E 38 to Ox7F7FFFFF 3 4028E 38 NOTE 1 Extended ASCII 8 0x00 NULL to OxFF y NOTE2 NOTE 1 Data type float to IEEE 754 NOTE 2 Data type Extended ASCII to ISO 8859 1 ii May 2015 K0582 Revision B References Reference 1 2C bus specification and user manual NPX Semiconductor UM10204 Rev 6 available from www nxp com KO582 Revision B May 2015 Contents 1 1 1 1 2 2 2 1 2 2 2 3 2 4 3 3 1 3 2 3 3 3 3 1 3 32 3 3 3 3 3 4 33 5 3 3 6 335 7 3 3 8 3 3 9 3 3 10 3 3 11 3 3 12 3 3 13 3 3 14 3 31 3 3 1 3 3 1 3 3 1 3 3 19 3 3 20 3 3 21 3 3 22 3 3 23 3 3 24 3 3 25 3 3 26 3 3 27 3 3 28 3 3 29 3 3 30 33 31 ONAN Introduction General Configuration Installation General Mounting and orientation Connecting to the pressure source Electrical connections Functional description Sensor communication Memory map Register descriptions Register bit table legend Address 0 STATUS Address 1 COMP_PRES Address 2 COMP_TEMP Address 3 ADC_PRES Address 4 ADC_TEMP Address 5 ACCESS Address 6 MVOLT_PRES Address 7 MVOLT_TEMP Address 66 2C_ADDR Address 67 COEF_FIT Address 68 GAIN_ADJ Address 69 O
22. Write 16 to CAL_ DATE DAY 7 0 lt 72 7 0 gt Maintenance WARNING High pressures and extremes of temperature are dangerous Be careful when working on components of systems where high pressures and high or low temperatures are present Use all applicable protection measures and observe all safety precautions Cleaning The external version of the DPS 5000 sensors may be periodically cleaned if required using a lint free cloth and a soft brush If necessary use a weak detergent solution to moisten the cloth Allow the sensor to dry before re use CAUTION Do not use cleaning agents solvents or high pressure gas to remove dirt as these may damage the sensor KO582 Revision B May 2015 27 5 2 5 9 5 4 28 Adjustment The DPS 5000 sensors are supplied fully calibrated by the manufacturer When it is necessary to re calibrate the sensor the procedure given in section 4 4 8 should be followed The minimum recommended re calibration interval is once per year and should be undertaken using a pressure source with a measurement accuracy of at least 0 01 of reading Note GE can provide a calibration service that is traceable to international standards Repair The DPS 5000 sensors contain no user serviceable items For any repairs return the sensor to the manufacturer or an approved service agent Disposal Disposal of the DPS 5000 sensor must be in accordance with the local statutory regulations Do not dispose of wit
23. ata available Check that the data is valid Read STATUS VALID 1 0 lt 0 2 1 gt 0b11 new data valid iii Get the compensated pressure data Read COMP_PRES COMP_PRES 31 0 lt 1 31 0 gt iv Get the unit of pressure information optional Read PRES_UNIT PRES_UNIT 7 0 lt 84 7 0 gt v Get the compensated temperature data Read COMP_TEMP COMP_TEMP 31 0 lt 2 31 0 gt Updating the pressure and temperature When the sensor enters the standby state for the first time the new data available flag CONV bit 0 of the STATUS register address 0 will be set to indicate that pressure and temperature data is available This data will not be updated until a new data request is generated which can be achieved either manually or automatically Manual update A new data request is manually generated by the user KO582 Revision B May 2015 21 4 3 2 44 44 1 22 Initiate a data update Write Ob1 to STATUS CONV lt 0 0 gt Writing Ob1 to STATUS CONV automatically clears the new data available flag It is set back to Ob1 when the updated data is available which can then be read using the steps given in section 4 2 Automatic update The user initiates the automatic generation of new data requests at a pre defined interval i Clear the new data available flag Write ObO to STATUS CONV lt 0 0 gt ii Set the auto update mode bit Write Ob1 to STATUS AUTO lt 0 8 gt The new data availab
24. cate when the registers have been updated Cleared by writing ObO using CLRQERR bit 13 or by reading the COMP_PRES COMP_TEMP ADC_PRES ADC_TEMP MVOLT_PRES or MVOLT_TEMP register addresses 1 2 3 4 6 and 7 respectively whilst the sensor is in the auto update mode ObO Read data not updated Write clear bit Ob1 Read data updated Write request update 3 3 3 Address 1 COMP PRES Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 COMP_PRES 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 COMP_PRES 23 16 R X KO582 Revision B May 2015 7 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 COMP_PRES 15 8 R X Bit 7 Bit 6 Bit5 Bit 4 Bit3 Bit 2 Bit 1 Bit 0 COMP_PRES 7 0 R X Bit 31 0 COMP_PRES 31 0 Read only the most recently updated compensated pressure value in the pressure units defined by the PRES_UNIT register address 84 Reading this register whilst the sensor is in the auto update mode will clear the CONV bit 0 flag of the STATUS register address 0 Oxn n Number type float 3 34 Address 2 COMP_TEMP Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 COMP_TEMP 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 COMP_TEMP 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 COMP_TEMP 15
25. d Reserved Reserved Reserved R 0 R 0 R 0 R 0 R 0 R 0 R 0 R 0 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 RESET 1 0 CLRQERR TARE SET_TARE QERR INTRDG AUTO W 0 W 0 W 0 R W 0 W 0 R 0 RW 0 R W 0 Bit7 Bit 6 Bit5 Bit 4 Bit3 Bit 2 Bit 1 Bit 0 Reserved Reserved WRITE ADC_ON WENB VALID 1 0 CONV R 0 R 0 W 0 R X R 0 R X R X R W X Bit31 16 Reserved read as 0 Bit 15 14 RESET 1 0 Write only performs a sensor reset equivalent to cycling the sensor power 0b00 No action 0b01 No action 0b10 Reset 0b11 No action Bit 13 CLRQERR Write only used to clear the QERR bit 10 and the CONV bit 0 flags ObO No action 0b1 Clear flags Bit 12 TARE Read write used to enable the sensor tare mode When enabled the COMP_PRES register address 1 is set to the actual compensated pressure minus the current value of the TARE_VALUE register address 87 ObO Disabled Ob1 Enabled Bit 11 SET_TARE Write only used to copy the current value of the COMP_PRES register address 1 to the TARE_VALUE register address 87 ObO No action Ob1 Copy data Bit 10 QERR Read only set when an internal queue error is detected whilst AUTO bit 8 is set Reset using CLRQERR bit 13 May 2015 K0582 Revision B Bit 9 Bit 8 Bit 7 6 Bit 5 Bit 4 Bit 3 Bit 2 1 Bit O ObO No error Ob1 Error INTRDG Read write used to enable the sensor interleave mode ADC_ON bit 4 is always set when enabled and alternate pressure and temperature A
26. e operation of the sensor and to provide information about the sensor and its environment Table 2 summarizes the features of the I2C bus specification Reference 1 that are supported by the DPS 5000 series sensors Feature Applicability Feature Applicability Standard mode Supported 10 bit addressing Not supported Fast mode Not supported General call address Not supported Fast mode plus Not supported Clock stretching Supported High speed mode Not supported Software reset Not supported 7 bit address Supported Device ID Not supported Table2 12C bus feature support Each slave device on an 12C bus network must have a unique address The default address for the DPS 5000 series sensors is 2 but may be changed over the bus as required to any value within the range 1 to 127 The DPS 5000 series sensors support the 12C bus standard mode to permit data transfers to or from the sensor up to 100 kbit s under the control of the network 12C bus master Data transfers may use any of the 3 12C bus data transfer formats to achieve the sensor register read and write protocols shown in Figure 4 DATA 7 BIT SENSOR 8 BIT REGISTER 7 BIT SENSOR 8 BIT DATA _ 8 BIT DATA READ ADDRESS JE ADDRESS ADDRESS fz BYTE 1 LSB BYTE n gt gt gt lt gt gt gt gt gt gt MASTER 1 BYTE WRITE MASTER n BYTE READ DATA 7 BIT SENSOR 8 BIT REGISTER 7 BIT SENSOR 8 BIT DATA KA 8 BIT DATA WRITE ADDRESS AD
27. evel correction factors If the values of the AVERAGE register P_AVE 7 0 and T_AVE 7 0 bit fields are P and T respectively then the typical sensor acquisition time can be found using the formula ta 2 12 2 27 10 60 ms 11 This formula excludes the time taken to initiate a new data request when the sensor is used in the manual mode as it is dependent upon the 2C bus clock speed and the message length K0582 Revision B May 2015 25 4 4 7 4 4 8 For example if the sensor has P_AVE 7 0 set to 2 and T_AVE 7 0 set to 1 and it is required to reduce the RMS amplitude of the pressure reading noise by a factor of 4 and the temperature reading noise by a factor of 2 then using Figure 8 the new values for P_AVE 7 0 and T_AVE 7 0 will be 6 and 3 respectively Unlock the configuration data registers as described in section 4 4 1 Update the number of pressure samples Write 6 to AVERAGE P_AVE 7 0 lt 82 15 8 gt iii Update the number of temperature samples Write 3 to AVERAGE T_AVE 7 0 lt 82 7 0 gt iv Save the new sample values to non volatile memory if required and re lock the configuration data registers as described in section 4 4 1 As a result of the above changes the sensor acquisition time will typically increase from 23 ms to 163 ms CAUTION If the sensor automatic update mode is used see section 4 3 2 ensure the auto update period see section 4 4 3 is set to be longer than the modif
28. h regular household refuse May 2015 K0582 Revision B Annex A Unit of pressure conversion factors The following tables give the value necessary to convert from the calibrated unit of pressure to the required unit of pressure Required unit of pressure mbar bar hPa kPa Mpa psi mmHzO Code 1 2 3 4 5 6 7 mbar 1 1 0 001 1 0 1 0 0001 0 01450377 10 19716 bar 2 1000 1 1000 100 0 1 1450377 10197 16 hPa 3 1 0 001 1 0 1 0 0001 0 01450377 10 19716 e kPa 4 10 0 01 10 1 0 001 0 1450377 1019716 Mpa 5 10000 10 10000 1000 1 145 0377 1019716 5 psi 6 6894757 0 06894757 6894757 6894757 0 006894757 1 703 0696 2 mmH20 7 00980665 9 80665E 05 0 0980665 0 00980665 9 80665E 06 0 001422334 1 S into 8 2490889 0 002490889 2490889 0 2490889 0 000249089 0 03612729 25 4 E ftH20 9 2989067 0 02989067 29 89067 2 989067 0 002989067 0 4335275 304 8 S mH20 10 980665 00980665 98 0665 9 80665 0 00980665 1 422334 1000 amp mmHg 11 1333224 0 001333224 1333224 0 1333224 0 000133322 0 01933678 13 5951 inHg 12 33 86389 0 03386389 33 86389 3 386389 0 003386389 04911542 345 3155 kgf cm2 13 980 665 0 980665 980 665 98 0665 0 0980665 4 22334 10000 atm 14 1013 25 1 01325 1013 25 101 325 0 101325 1469595 10332 28 Requ
29. ied acquisition time Failure to observe this precaution will result in the queue error flag STATUS QERR lt 0 10 gt being set and may result in invalid pressure and temperature data Maximising the update rate For applications that require the DPS 5000 sensor acquisition time to be faster than is achievable by adjusting the sensor SNR see section 4 4 6 the sensor provides an interleave mode This mode is only intended to be used when both the P_AVE 7 0 and T_AVE 7 0 bit fields of the AVERAGE register are set to O and should be used with caution It provides a sensor acquisition time of typically 10 ms permitting a pressure and temperature measurement refresh rate of up to 100 Hz to be achieved To use the interleave mode i Set the P_AVE 7 0 and T_AVE 7 0 bit fields of the AVERAGE register to 0 using the steps described in section 4 4 6 ii Set the interleave mode bit Write 0b1 to STATUS INTRDG lt 0 9 gt Pressure re calibration The user may perform a 2 point pressure re calibration on the DPS 5000 sensors by adjusting the zero and span settings of the sensor The following steps describe the procedure i Apply a known pressure Paz ideally lt 10 of the sensor s full scale pressure and record the measured pressure Pm112 Pm Read COMP_PRES COMP_PRES 31 0 lt 1 31 0 gt 12 To minimise the effects of noise it is recommended that the values Pm and Pm used are the average of several measurement
30. ired unit of pressure inH20 ftH20 mH20 mmHg inHg gf cm2 atm Code 8 9 10 11 12 13 14 mbar 1 04014631 0 03345526 0 01019716 0 7500616 0 02952998 0 001019716 0 000986923 bar 2 4014631 3345526 1019716 750 0616 29 52998 1019716 0 9869232 hPa 3 04014631 0 03345526 0 01019716 0 7500616 0 02952998 0 001019716 0 000986923 L kPa 4 4014631 03345526 01019716 7 500616 02952998 0 01019716 0 009869232 Mpa 5 4014631 3345526 1019716 7500 616 295 2998 0 19716 9 869232 S psi 6 27 6799 2306659 0 7030696 51 71492 2 036021 0 07030696 0 06804596 2 mmH20 7 0 03937008 000328084 0 001 0 07355591 0 002895902 0 0001 9 67841E 05 S into 8 1 0 08333333 0 0254 1 86832 0 07355591 0 00254 0 002458316 g ftH20 9 12 1 0 3048 22 41984 0 8826709 0 03048 0 02949979 S mH20 10 3937008 3 28084 1 73 55591 2 895902 0 1 0 0967841 g mmHg 11 0 5352402 0 04460335 0 0135951 1 0 03937008 0 00135951 0 00131579 inHg 12 13 5951 1 132925 0 3453155 25 4 1 0 03453155 0 03342105 kgf cm2 13 393 7008 32 8084 10 735 5591 28 95902 1 0 967841 atm 14 4067825 3389854 10 33228 760 29 92126 1 033228 1 The conversion factors for the units mmH20 inH20 ftH20 and mH20 are for water at 4 C The conversion factors for the units mmHg and inHg are for Mercury at 0 C K0582 Revision B May 2015 29
31. le flag is set to 0b1 when the updated data is available which can then be read using the steps given in section 4 2 When in the auto update mode reading the COMP_PRES COMP_TEMP ADC_PRES ADC_TEMP MVOLT_PRES or MVOLT_TEMP register addresses 1 2 3 4 6 and 7 respectively will automatically clear the new data available flag As supplied the auto update period is set to the default value of 100 ms but it may be changed by the user see section 4 4 3 Updating the sensor configuration data registers User modifiable registers The configuration data registers provide information for the user and allow the user to change the functionality of the sensor Table 4 lists the configuration data registers that can be modified by the user Addr Register See section s Addr Register See section s 66 12C_ADDR 44 2 83 PRES_CONV 4 4 4 4 4 8 68 GAIN_ADJ 4 4 8 84 PRES_UNIT 444 69 OFFSET_ADJ 448 85 DELAY 443 12 CAL_DATE 448 87 TARE_VALUE 44 5 82 AVERAGE 446 Table4 User modifiable registers With the exception of the I2C_ADDR and DELAY registers any change to a register value takes immediate effect The changes made to a register value may be temporary or permanent Temporary the modified register value will remain valid until the either the sensor is reset via the status register or the sensor power is cycled e Permanent the modified register value is written to non volatile memory and
32. ments of the Pressure Equipment Directive 97 23 EEC and the EMC directive 2004 108 EC For further details refer to the Sales Data Sheet or the customer C specification drawing A full conformity certificate is available from the manufacturer Contact GE Measurement amp Control www gemeasurement com 1 The EMC directive is only applicable to the external variant model E503D KO582 Revision B May 2015 Abbreviations The following abbreviations are used in this manual Note Abbreviations are the same in the singular and plural ADC Analogue to digital converter Addr Address ASCII American standard code for information interchange atm atmosphere ESD Electro static discharge ftH20 Feet of water hPa HectoPascal Hz Hertz 12C Inter integrated circuit IEEE Institute of Electrical and Electronic Engineers inHg Inch of Mercury inH20 Inch of water kbit s Kilobits per second kbyte Kilobytes 1024 bytes kgf cm Kilogram force per square centimetre kPa KiloPascal LSB Least significant bit byte mbar Millibar mH20 Metre of water mmHg Millimetre of Mercury mmH20 Millimetre of water MPa MegaPascal ms Millisecond MSB Most significant bit byte PCB Printed circuit board psi Pound per square inch S Second SNR Signal to noise ratio 2G Degrees Celsius Nomenclature The following number notations are used in this document Obn n Binary number notation e g 0b10 Oxn n
33. most recently updated pressure sensing element output voltage This value is used in conjunction with the pressure and temperature coefficient registers to calculate the values held in the COMP_PRES and COMP_TEMP registers addresses 1 and 2 Reading this register whilst the sensor is in the auto update mode will clear the CONV bit 0 flag of the STATUS register address 0 Oxn n Number type float 3 39 Address 7 MVOLT_TEMP Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 MVOLT _TEMP 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 MVOLT _TEMP 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 MVOLT _TEMP 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MVOLT _TEMP 7 0 R X Bit 31 0 MVOLT _TEMP 31 0 Read only the most recently updated temperature sensing element output voltage This value is used in conjunction with the pressure and temperature coefficient registers to calculate the values held in the COMP_PRES and COMP_TEMP registers addresses 1 and 2 Reading this register whilst the sensor is in the auto update mode will clear the CONV bit 0 flag of the STATUS register address 0 Oxn n Number type float 3 3 10 Address 66 12C_ADDR Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Unused Unused Unused Unused Unused Unused U
34. nused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ADDRI 0 R W X Bit 31 7 Unused read write Bit 7 0 ADDRI7 0 Read write the sensors current new l2C bus address Oxn n Number type unsigned byte 0 Invalid address 3 A change of the sensor I2C bus address does not take effect until the I2C_ADDR register has been modified written to non volatile memory and the sensor reset via the STATUS register or the sensor power is cycled 10 May 2015 K0582 Revision B 1 Valid address 2 Valid address default value 127 Valid address 128 Invalid address 255 Invalid address 3 3 11 Address 67 COEF_FIT Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 TT_FIT 7 0 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 TP_FITF 7 0 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 PT_FIT 7 0 R X Bit 7 Bit6 Bit5 Bit 4 Bit3 Bit 2 Bit 1 Bit 0 PP_FIT 7 0 R X Bit31 24 TT_FIT 7 0 Bit 23 16 TP_FIT 7 0 coefficients equal th Oxn n Bit 15 8 PT_FIT 7 0 coefficient
35. roduce each pressure and temperature reading Number type unsigned byte Oxn n 0 1 2 7 1 sample 2 samples 4 samples 128 samples May 2015 K0582 Revision B 8 255 Bit 7 0 T_AVE 7 0 Read write defines the number of individual temperature ADC data samples averaged to produce each pressure and temperature reading Oxn n Number type unsigned byte Invalid value Invalid value 0 1 sample 1 2 samples 2 4 samples 7 128 samples 8 Invalid values 255 Invalid values 3 3 25 Address 83 PRES CONV Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 PRES_CONV 31 24 R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 PRES_CONV 23 16 R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 PRES_CONV 15 8 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 PRES_CONV 7 0 R W X Bit 31 0 PRES_CONV 31 0 Read write the value of this register is used to modify the value of the COMP_PRES register address 1 by the converting the value from the manufacturer s pressure units to the user pressure units Oxn n Number type float 1 0 Default value 3 3 26 Address 84 PRES_UNIT Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Unused Unused Unused Unused Unused Unused Unused Unused R W X R W X R W X R W X R W X R W X R W X R W X Bit 23 Bit 22 Bit 21 Bit 20
36. s 26 May 2015 K0582 Revision B 5 1 ii Apply a second known pressure Paz ideally gt 90 of the sensor s full scale pressure and record the measured pressure Pm2 2 Pme Read COMP_PRES COMP_PRES 31 0 lt 1 31 0 gt iii Read and record the current values G O and C of the following configuration data registers G Read GAIN_ADJ GAIN_ADJ 31 0 lt 68 31 0 gt O Read OFFSET_ADJ OFFSET_ADJ 31 0 lt 69 31 0 gt C Read PRES_CONV PRES_CONV 31 0 lt 83 31 0 gt iv Calculate the values S G and O using the following formulae Pu2 Pui Pag Par G 2 TS J S P 0 C Pum J S C v Unlock the configuration data registers as described in section 4 4 1 vi Update the following configuration registers Write the value of G to GAIN_ADJ GAIN_ADJ 31 0 lt 68 31 0 gt Write the value of O to OFFSET_ADJ OFFSET_ADJ 31 0 lt 69 31 0 gt vii Save the new calibration zero and span factor values to non volatile memory if required and re lock the configuration data registers as described in section 4 4 1 The user may also record the date of re calibration by modifying the date fields of CAL_DATE register For example to change the calibration date to 16 April 2015 then add the following step between steps vi and vii above viii Update the date field values Write 2015 to CAL_ DATE YEAR 15 0 lt 72 31 16 gt Write 4 to CAL_DATE MONTH 7 0 lt 72 15 8 gt
37. s equal th Oxn n Bit 7 0 PP_FIT 7 0 equal this value 1 Read only the number of temperature related temperature coefficients equal this value 1 Oxn n Number Read Number Read Number Read only the ype unsigned byte is value 1 ype unsigned byte is value 1 ype unsigned byte only the number of pressure related temperature only the number of temperature related pressure number of pressure related pressure coefficients Oxn n Number type unsigned byte 3 3 12 Address 68 GAIN_ADJ Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 GAIN_ADJ 31 24 R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 GAIN_ADJ 23 16 R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 GAIN_ADJ 15 8 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 GAIN_ADJ 7 0 R W X 4 Invalid addresses default to 2 when the sensor is reset KO582 Revision B May 2015 11 Bit 31 0 GAIN_ADJ 31 0 Read write the value of this register is used to modify the value of the COMP_PRES register address 1 It is used in conjunction with the OFFSET_ADJ register address 69 during user re calibration of the sensor Oxn n Number type float 1 0 Default value 3 3 13 Address 69 OFFSET_ADJ Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 OFFSET _
38. sure offset value Write 1 000000 to TARE_VALUE TARE_VALUE 31 0 lt 87 31 0 gt iii Save the new pressure offset value to non volatile memory if required and re lock the configuration data registers as described in section 4 4 1 Alternatively to set the pressure offset to the current value of the COMP_PRES register iv Copy the current COMP_PRES register value to the TARE_VALUE register Write Ob1 to STATUS SET_TARE lt 0 11 gt To enable reading relative pressure V Enable the sensor tare mode Write Ob1 to STATUS TARE lt 0 12 gt Pressure and temperature SNR The DPS 5000 sensors provide compensated pressure and temperature readings with a high SNR However for very low noise applications the user can modify the contents of the AVERAGE register to increase the SNR of either or both readings at the expense of the sensor acquisition time The AVERAGE register has 2 bit fields P_AVE 7 0 and T_AVE 7 0 that can be used to adjust the SNR of the pressure and temperature reading respectively Typically the sensors are supplied with P_AVE 7 0 set to 2 and T_AVE 7 0 set to 1 Modifying these values will typically change the RMS amplitude of the corresponding reading noise by the correction factor shown in Figure 8 2 T 2 1 75 Pressure reading 1 75 Temperature reading 15 4 1 25 Factor rR Factor 0 75 0 5 0 25 T_AVE 7 0 value P_AVE 7 0 value Figure 8 Noise l
39. t 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 MAX_ADC_PRES 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 MAX_ADC_PRES 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MAX_ADC_PRES 7 0 R X 5 All values of the specified number type are supported which may result in nonsensical date values K0582 Revision B May 2015 13 Bit 31 0 MAX _ ADC_PRES 31 0 Read only if the current value of the ADC_PRES register address 3 exceeds this value VALID O bit 1 of the STATUS register address 0 will be cleared Number type unsigned word 3 3 18 Address 74 MIN_ADC_PRES Oxn n Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 MIN _ADC_PRES 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 MIN _ADC_PRES 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit9 Bit 8 MIN _ADC_PRES 15 8 R X Bit7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 IN _ADC_PRES 7 0 R X Bit 31 0 MIN_ADC_PRES 31 0 Read only if the current value of the ADC_PRES register address 3 is less register address 0 will be cleared Oxn n Number type unsi 3 3 19 Address 75 MAX_ADC_TEMP gned word han this value VALID O bit 1 of the STATUS Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 MAX_ADC_TEMP 31 24 R X
40. t 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ADC_TEMP 7 0 R X Bit 31 0 ADC_TEMP 31 0 Read only the most recently updated temperature ADC value register address 7 Oxn n This value is used to calculate the value held in the MVOLT_TEMP Reading this register whilst the sensor is in the auto update mode will clear the CONV bit 0 flag of the STATUS register address 0 Number type unsigned word 3 3 7 Address 5 ACCESS Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 ACCESS 31 24 W 0 Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 ACCESS 23 16 W 0 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 ACCESS 15 8 W 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACCESS 7 0 W 0 Bit 31 0 ACCESS 31 0 Write only used to clear or set WENB bit 3 of the STATUS register address 0 Oxn n Number type unsigned word 0 Clear WENB 4118 Set WENB 3 3 8 Address 6 MVOLT_PRES Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 MVOLT _PRES 31 24 R X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 MVOLT _ PRES 23 16 R X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 MVOLT _PRES 15 8 R X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MVOLT _PRES 7 0 R X KO582 Revision B May 2015 9 Bit 31 0 MVOLT _PRES 31 0 Read only the
41. the new pressure unit conversion factor value to non volatile memory if required and re lock the configuration data registers as described in section 4 4 1 The user may also change the value of the pressure unit code held in the PRES_UNIT register to the alternative unit of pressure code For example if the unit of pressure for the pressure reading has been changed to psi then add the following step between steps ii and iii above iv Determine the appropriate unit of conversion code from Annex A and update the unit of pressure code value Write 6 to PRES_UNIT PRES_UNIT 7 0 lt 84 7 0 gt CAUTION Changing the PRES_CONV and PRES_UNIT registers has no effect on the MAX_RANGE and MIN_RANGE register values The unit of pressure for these values will remain in the supplied calibrated unit of pressure Reading relative pressure The DPS 5000 sensors can be configured to provide pressure measurements relative to a pressure offset such that RELATIVE PRESSURE TRUE PRESSURE PRESSURE OFFSET The relative pressure value is available via the COMP_PRES register when the sensor tare mode is selected The pressure offset value is held in the TARE_VALUE register The value can be either a user defined value or set to the current value of the COMP_PRES register May 2015 K0582 Revision B 4 4 6 For example to set the pressure offset to 1 000000 i Unlock the configuration data registers as described in section 4 4 1 ii Update the pres
42. then remains valid even if the sensor is reset via the status register or the sensor power is cycled The configuration data registers are normally locked to prevent inadvertent changes from being made The following steps are required unlock the registers i Enable changes to the configuration data registers Write 4118 to ACCESS ACCESS 31 0 lt 5 31 0 gt May 2015 KO582 Revision B 4 4 2 4 4 3 ii Check the configuration data write access status optional Read STATUS WENB lt 0 3 gt 0b1 configuration data write enabled The configuration registers may then be modified by writing the new user values to the appropriate registers If the new user values are to be permanent the following step must be performed iii Save the register data to non volatile memory Write Ob1 to STATUS WRITE lt 0 5 gt Finally the configuration data registers should be re locked to prevent further changes from being made iv Disable changes to the configuration data registers Write O to ACCESS ACCESS lt 5 31 0 gt Modifying the l2C bus address All DPS 5000 sensors are supplied with the C bus address set to the default value of 2 The l2C bus address may be changed by the user by writing the desired new address to the 12C_ADDR register Allowable address values are 1 to 127 For example to change the I2C bus address to 64 i Unlock the configuration data registers as described in section 4 4 1 ii Update the l C bus
43. tures are present CAUTION The sensor contains ESD sensitive devices Whilst the sensor incorporates protection against ESD caution should be taken to observe proper ESD handling procedures when installing the internal variant Mounting and orientation The DPS 5000 series sensors are designed to be mounted in any orientation However the sensor is a harsh media isolated product and the isolation is achieved by hermetically sealing the sensor chip within an oil filled chamber The weight of the oil gives a g sensitivity as a pressure offset error that may be noticeable at the lowest pressure ranges Ensure the sensor is mounted in a manner that avoids unwanted mechanical or thermal stress such as vibration shock or excessive or rapid temperatures excursions Connecting to the pressure source When connecting the pressure source to the sensor ensure the mating surfaces are correctly sealed Failure to properly seal may affect the sensor performance or calibration accuracy Male parallel threaded pressure connectors must not be sealed or constrained against the face at the base of the thread The forward flat face should be used as shown in Figure 2 May 2015 K0582 Revision B 2 4 Figure 2 Pressure connection Torque tighten the sensor in accordance with the system installation manual Electrical connections The DPS 5000 series sensors employ a 4 wire C bus user electrical interface Supply
44. ues of the TP_FIT 7 0 and TT_FIT 7 0 bits of the COEF_DIM register address 67 Each coefficient register is bit mapped as follows Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Krw 31 24 R W X Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 17 Bit 16 Krs 23 16 R W X Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Kr 15 8 R W X Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Kr 7 0 R W X Bit 31 0 Krw 31 0 Read only Oxn n Number type float 4 Operational description 41 Operational states The basic operational states of the DPS 5000 sensor are shown in Figure 6 POWER UP aT a COMPLETED rae AVAILABLE N AVAILABLE SENSOR POWER APPLIED USER SENSOR POWER UP STANDBY jN INTERACTION NEW DATA PA REQUEST SENSOR POWER CYCLED Figure6 Operational states When power is first applied the sensor enters the power up state Whilst in this state the sensor is unresponsive to l C bus activity and user interaction with the sensor is not possible After the power up checks have been completed the sensor automatically enters the acquire state in which the sensor obtains pressure and temperature data User interaction with the sensor is now possible but the pressure and temperature data will not be available until after the sensor acquisition time and the sensor enters the stand by state The sensor will remain in the standby state until either 20 May 2015 KO582 Revision B
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