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More Information

‣

Chemical Purge (page 11)

‣

Triggering Purge in Analog Mode (page 27)

8.2 Calibration and Adjustment

The probe is fully calibrated and adjusted as shipped from the factory. A typical calibration
interval is 1 year, depending on how frequently and long your probe is exposed to vaporized
H

2

O

2

.

Calibration and adjustment is performed by Vaisala. For contact information, visit

www.vaisala.com/calibration

.

Chapter 8 – Maintenance

35

Summary of Contents for HPP272

Page 1: ...M211972EN B User Guide Vaisala PEROXCAP Hydrogen Peroxide Humidity and Temperature Probe HPP272...

Page 2: ...are subject to change without prior notice Local rules and regulations may vary and they shall take precedence over the information contained in this manual Vaisala makes no representations on this m...

Page 3: ...tor 12 2 10 Connectivity to Vaisala Insight Software 12 2 11 Additional Features with Indigo Transmitters 13 3 H2O2 Measurement 14 3 1 Operating Principle of H2O2 Measurement 14 3 2 Typical Applicatio...

Page 4: ...le Solutions 36 9 2 Analog Output Error State 40 10 Technical Data 41 10 1 Dimensions 43 10 2 Accessories 44 Appendix A Modbus Reference 45 A 1 Default Communication Settings 45 A 2 Function Codes 45...

Page 5: ...t temperatures when H2O2 concentration 500 ppm and H2O concentration 8850 ppm are constant 18 Figure 6 Decontaminated space with different temperatures and RS levels H2O2 and H2O concentration evenly...

Page 6: ...es 44 Table 10 Default Modbus Serial Communication Settings 45 Table 11 Modbus Function Codes 45 Table 12 16 bit Signed Integer Format Details 46 Table 13 Modbus Measurement Data Registers Read Only 4...

Page 7: ...fied Indigo 200 transmitter compatibility with HPP272 M211972EN A September 2017 First version 1 2 Related Manuals Table 2 Related Manuals Document Code Name M211887EN Hydrogen Peroxide Humidity and T...

Page 8: ...ther product or company names that may be mentioned in this publication are trade names trademarks or registered trademarks of their respective owners 1 5 Patent Notice This product is protected by th...

Page 9: ...for Modbus communication and two current output channels The probe is not intended for safety level measurement The probe is not intended to be used in vacuum applications When there is H2O2 in the p...

Page 10: ...turbulence Sensor heating to avoid condensation on the sensors Chemical purge for optimized performance and lifetime Pressure compensation for H2O2 concentration ppm H2O concentration ppm and relative...

Page 11: ...rogen peroxide concentration by volume ppm Relative saturation RS H2O H2O2 RS Relative humidity RH H2O RH Temperature C Absolute hydrogen peroxide mg m3 Absolute humidity H2O g m3 Water concentration...

Page 12: ...ration reaches 100 RS the vapor mixture starts to condense Relative humidity is a parameter that indicates the humidity of the air caused only by water vapor RH RS 0 0 100 100 H2 O H2 O2 RS RH 0 0 100...

Page 13: ...cal Purge Chemical purge is a 4 minute process where the sensors are heated to remove possible contamination The purge is essential for the long term performance and accuracy of the probe in demanding...

Page 14: ...ctor that affects the speed at which the latest H2O2 and RS measurements are integrated into the output of the probe This allows averaging the output if the measuring environment produces occasional e...

Page 15: ...s for outputs measurement viewing status monitoring and configuration interface access Examples of additional features available with Indigo transmitters include 3 5 TFT LCD color display or non displ...

Page 16: ...HUMICAP sensor is a thin film polymer sensor consisting of a substrate on which a thin polymer film is deposited between two electrodes The film absorbs or releases vapor according to humidity change...

Page 17: ...hydrogen peroxide into water and oxygen and prevents it from entering the sensing polymer 2 Thin film polymer between two electrodes 3 Alumina substrate In addition to measuring vaporized H2O2 concen...

Page 18: ...idues only water vapor and oxygen One of the benefits also is that the bio decontamination process can be validated Common vaporized H2O2 bio decontamination applications include isolators transfer ha...

Page 19: ...lso starts to rise In the decontamination phase H2O2 concentration is steady However RS level rises slowly close to 100 RS i e condensation point due to rising RH level In the aeration phase H2O2 conc...

Page 20: ...ndense when relative saturation RS reaches 100 RS RS level is strongly affected by temperature decreasing the temperature increases RS If there are temperature differences in the bio decontaminated sp...

Page 21: ...of the space RS level is higher than in the center 3 Window of the decontaminated space The window is 1 C cooler than the center of the space and RS 100 RS Condensation starts to form on the window su...

Page 22: ...s you must verify their suitability in the installation environment The probes withstand high air flow rates For condensation monitoring with relative saturation consider installing the probe close to...

Page 23: ...2 Nut for mounting the gland Example Installation Entirely in Process Environment 6 10 cm Mount the H2O2 and humidity probe from the probe body Mount the temperature probe from the metal body Note tha...

Page 24: ...d signal GND Blue 4 RS 485 or analog output 1 Current output 4 20 mA default 2 Black 5 Output control and purge trigger in analog mode Floating RS 485 Grounded Analog outputs If you want to be able to...

Page 25: ...pply Operating voltage range of the probe With digital output 15 30 VDC With analog output 15 25 VDC Maximum current consumption at 25 C With digital output 15 mA With analog output 50 mA During purge...

Page 26: ...2 Select the output mode with pin 5 a To set the probe in analog mode connect pin 5 to ground b To set the probe in digital mode leave pin 5 floating 3 Power on the probe The probe checks the state o...

Page 27: ...nditions maintains measurement performance and lengthens the probe s lifetime When the probe is powered off exposure to H2O2 condensation can break the PEROXCAP sensor within a day and the sensor will...

Page 28: ...robe The default output range for both channels is 4 20 mA When using analog outputs it is recommended to use a low supply voltage to minimize self heating and maximize measurement performance The ope...

Page 29: ...control the pin For a wiring example see Figure 8 page 23 1 To trigger the purge disconnect pin 5 from ground for a minimum of 50 ms and then reconnect the pin to ground Do not leave pin 5 floating f...

Page 30: ...put parameters and scaling Calibrate and adjust the device Download Vaisala Insight software at www vaisala com insight The probe can be connected to Vaisala Insight software using a Vaisala USB cable...

Page 31: ...g wheel insert cable hold in place and turn the wheel counterclockwise 3 Wireless configuration interface WLAN activation button 4 Rubber lead through with strain relief Cable feedthrough option also...

Page 32: ...iguration Interface Overview The wireless configuration interface has two user levels All users have view only access no configuration rights not password protected Personnel that carry out configurat...

Page 33: ...ndigo s cable connector and lock it in place by turning the locking wheel counterclockwise Do not turn the cable connector when attaching the cable only the locking wheel on the transmitter 3 When Ind...

Page 34: ...the transmitter 2 When the wireless configuration interface becomes available the Indigo display shows a connection notification In the Indigo models with an LED indicator the LED blinks green when t...

Page 35: ...o log in as user view only access no configuration rights select User from the User name dropdown Leave the Password field empty b To log in as admin required for configuration select Admin in the Use...

Page 36: ...ch the filter always wear clean gloves cotton rubber or similar material Keep the filter free of any grease or oil Do not scrape the probe body Do not immerse the probe in liquid to clean it Wipe clea...

Page 37: ...obe is fully calibrated and adjusted as shipped from the factory A typical calibration interval is 1 year depending on how frequently and long your probe is exposed to vaporized H2O2 Calibration and a...

Page 38: ...ct change the filter The filter is made of porous material and if the filter hits the floor the filter material may get pressed and become less permeable This reduces the rate at which air flows in an...

Page 39: ...near a heat source or too close to the H2O2 and humidity probe Change the location of temperature probe See Installation page 20 for recommended installation locations The filter is wet Remove the fil...

Page 40: ...k the ambient pressure See Table 8 page 43 for the permitted operating pressure Problem The filter is wet Possible Cause Solution Sprayed water has entered the filter when cleaning the probe Remove th...

Page 41: ...ing voltage is incorrect Check the operating voltage and correct if needed See Table 6 page 42 for the correct voltage In digital mode The communication settings for example the device address are inc...

Page 42: ...software and correct the scaling if needed see Vaisala Insight Software page 28 There is a probe or sensor error Check the probe diagnostics with the Insight software see Vaisala Insight Software page...

Page 43: ...F still air T63 120 s T90 200 s Relative Saturation Measurement range 0 100 RS Measurement temperature range 5 50 C 41 122 F Repeatability at 25 C 77 F 500 ppm H2O2 0 5 RS Accuracy including non line...

Page 44: ...Property Description Value Operating voltage With digital output 15 30 VDC With analog output 15 25 VDC use lowest available operating voltage to minimize heating Current Consumption at 25 C 77 F In...

Page 45: ...ISI316L stainless steel Temperature probe cable PTFE Table 8 Operating Environment Property Description Value Operating temperature 0 70 C 32 158 F Storage temperature 20 70 C 4 158 F Ambient pressure...

Page 46: ...th open wires 10 m 216546SP Probe cable with open wires and 90 plug 0 6 m 244669SP Filter DRW246363SP Gland set for through wall installation HPP272 HPP272MOUNTINGSET1 Transmitters Indigo 200 series S...

Page 47: ...ass 0 43 14 2Bhex 0Ehex Read Device Identification A 3 Data Encoding In the data registers the numeric values are available in one or two formats with separate register addresses 32 bit IEEE floating...

Page 48: ...FFFFhex Value in range 32766 1 2 s complement 8000hex Value is not available quiet NaN Some values may exceed the signed 16 bit range even in normal operation To access such values use the floating p...

Page 49: ...08hex Absolute hydrogen peroxide 32 bit float mg m3 15 000Ehex Water concentration by volume 32 bit float ppm 17 0010hex Water vapor pressure 32 bit float hPa 19 0012hex Absolute humidity water 32 bit...

Page 50: ...saturation pressure 16 bit signed integer hPa 268 010Bhex Temperature from the temperature probe 16 bit signed integer C 100 A 4 2 Configuration Registers Default power up values registers 773 775 ar...

Page 51: ...m power up value 771 0302hex Volatile value for given temperature reading value cleared at probe reset Used for calculations instead of the temperature from the temperature probe if temperature compen...

Page 52: ...rement for example 0 9 means the reading consists 90 of the latest measurement and 10 of the earlier reading 781 030Chex Low H2O2 clipping limit 32 bit float ppm Any numerical value default 0 1283 050...

Page 53: ...0506hex Manual purge trigger in analog mode on off 16 bit boolean 1 On 0 Off default 1 On 1537 0600hex Modbus address 16 bit integer 1 255 default 240 1538 0601hex Bit rate enum 5 9600 6 19200 7 38400...

Page 54: ...Output parameter 1797 0704hex Scale high end 32 bit float Set the upper limit of the measurement scale for the output parameter chosen in register 0701hex Output parameter 1799 0706hex Error output 3...

Page 55: ...greement 2817 0B00hex Customer name 24 character ASCII string Read only 2829 0B0Chex Contract number 24 character ASCII string Read only 2841 0B18hex Start date three 16 bit integer decimal values YYY...

Page 56: ...on Data Format Notes 513 0200hex Device status 16 bit 0 Status OK 1 Critical error maintenance needed 2 Error device may recover automatically 4 Warning 8 Notification 1 514 0201hex Status code low 32...

Page 57: ...0219hex Status of Absolute humidity 16 bit 539 021Ahex Status of Water vapor saturation pressure 16 bit 540 021Bhex Status of Temperature from the temperature probe 16 bit 1 Multiple statuses can be...

Page 58: ...Register 0203hex Error Message Severity 0 Status OK 256 A D converter failure external Error 512 Non volatile memory read write failure Error 4096 Humidity sensor failure short circuit Error 8192 Pur...

Page 59: ...ration date Date of the factory calibration 130 82hex Calibration text Information text of the factory calibration A 4 5 Test Value Registers Table 19 Test Value Registers Address Decimal Address Hexa...

Page 60: ...Read Holding Registers 00hex Register address 04hex Number of data bytes 00hex D4hex Value of first register least significant word 00hex Number of 16 bit registers to read 2 7Ahex 02hex 43hex Value o...

Page 61: ...Modbus RTU checksum 0Bhex Value for the register 6Ehex 40hex silence for 3 5 bytes End of Modbus RTU frame 9Bhex Modbus RTU checksum The response to a write function informs that the function was corr...

Page 62: ...Communication Description Value to write 0B40hex 2880 minutes 48 hours HPP272 User Guide M211972EN B 60...

Page 63: ...of Sale for details of the warranty for each product Technical Support Contact Vaisala technical support at helpdesk vaisala com Provide at least the following supporting information Product name mod...

Page 64: ...HPP272 User Guide M211972EN B 62...

Page 65: ......

Page 66: ...www vaisala com...

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