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Vaisala PEROXCAP HPP271 User Manual

Vaisala PEROXCAP HPP271 User Manual

Hydrogen peroxide probe
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M211888EN-E
User Guide
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Vaisala PEROXCAP
Hydrogen Peroxide Probe
HPP271

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Summary of Contents for Vaisala PEROXCAP HPP271

  • Page 1 M211888EN-E User Guide â Vaisala PEROXCAP Hydrogen Peroxide Probe HPP271...
  • Page 2 English versions are This product contains software developed applicable, not the translations. by Vaisala or third parties. Use of the The contents of this document are subject software is governed by license terms and to change without prior notice.

  • Page 3: Table Of Contents

    ESD protection....................16 Measured parameters..................16 Probe filter......................17 Sensor purge....................18 Environmental compensation for pressure..........18 Measurement filtering factor................19 2.10 Connectivity to Vaisala Insight software............19 2.11 Additional features with Indigo transmitters..........19 measurement..................21 Operating principle of H measurement..........21 Typical applications..................22 Installation.......................
  • Page 4 Configuring probe features with Indigo80 handheld indicator....49 7.3.1 Example of configuring filtering factor with Indigo80 handheld indicator..................50 Configuring environment settings with Indigo80 handheld indicator..50 Vaisala Insight PC software..............52 Connecting to Insight software..............52 Maintenance....................54 Cleaning the probe..................54 9.1.1 Chemical tolerance................. 54 Sensor vitality information in Insight............
  • Page 5 Table of contents Modbus registers.................... 88 A.4.1 Measurement data registers..............88 A.4.2 Configuration registers................88 A.4.3 Status registers..................96 A.4.4 Device identification objects..............99 A.4.5 Test value registers................. 99 Modbus communication examples............100 Maintenance and calibration services............103 Technical support..................103 Warranty......................103 Recycling......................

  • Page 6: List Of Figures

    HPP271 User Guide M211888EN-E List of figures Figure Probe parts......................14 Figure 2 Operating principle of PEROXCAP measurement......... 22 Figure 3 Example behavior of H concentration, relative saturation (RS), and relative humidity (RH) in a vaporized H bio-decontamination cycle (non- condensing conditions).................23 Figure 4 Pins on the probe M12/5 male connector..........
  • Page 7 List of tables List of tables Table Document versions..................... 9 Table 2 Related manuals....................11 Table 3 Applicable patents or applications............... 13 Table 4 Available parameters..................16 Table 5 HPP271 measurement performance.............78 Table 6 HPP271 inputs and outputs................79 Table 7 HPP271 operating environment..............
  • Page 8 HPP271 User Guide M211888EN-E...

  • Page 9: About This Document

    Chapter 1 – About this document 1. About this document 1.1 Version information This document provides instructions for installing, using, and maintaining Vaisala PEROXCAPâ Hydrogen Peroxide Probe HPP271.
  • Page 10 HPP271 User Guide M211888EN-E Table 1 Document versions Document code Date Description M211888EN-E April 2023 This document. Added information on the Indigo80 handheld indicator. Updated information on Indigo series transmitter models and added instructions on calibration and adjustment with Indigo200 series transmitters using the new USB-C (Insight) interface.

  • Page 11: Related Manuals

    Updated the instructions for using the ATEST output test in Insight PC software and added information on the probe SW version requirements for ATEST. Corrected trademark information. 1.2 Related manuals For the latest versions of these documents, see docs.vaisala.com. Table 2 Related manuals Document code Name M211887EN...

  • Page 12: Trademarks

    Indicates that you need to take some notes during the task. 1.4 Trademarks Vaisalaâ, HUMICAPâ, and PEROXCAPâ are registered trademarks of Vaisala Oyj. All other product or company names that may be mentioned in this publication are trade names, trademarks, or registered trademarks of their respective owners.

  • Page 13: Table 3 Applicable Patents Or Applications

    Chapter 1 – About this document Table 3 Applicable patents or applications Issuing office Publication number European Patent Office EP 3004868 State Intellectual Property Office of the P.R.C. CN 105229463A United States Patent and Trademark Office US 20160084811...

  • Page 14: Product Overview

    2. Product overview 2.1 Introduction to HPP271 Vaisala PEROXCAPâ Hydrogen Peroxide, Humidity and Temperature Probe HPP270 series is designed for demanding hydrogen peroxide bio-decontamination processes. The probes are suitable for a variety of applications such as isolator, material transfer hatch, and room bio- decontamination.

  • Page 15: Basic Features And Options

    • Field calibration and adjustment with a regular humidity calibrator or with H vapor. • Can be used as a stand-alone probe or with Vaisala Indigo transmitters and the Indigo80 handheld indicator. • Can be connected to Vaisala Insight PC software for calibration and adjustment, configuration, diagnostics, and temporary online monitoring.

  • Page 16: Esd Protection

    2.4 ESD protection Electrostatic discharge (ESD) can cause immediate or latent damage to electronic circuits. Vaisala products are adequately protected against ESD for their intended use. However, it is possible to damage the product by delivering an electrostatic discharge when touching, removing or inserting any objects inside the equipment housing.

  • Page 17: Probe Filter

    The probe provides both digital and analog outputs. More information ‣ Connectivity to Vaisala Insight software (page 19) ‣ Setting probe in analog or digital mode (page 29) ‣ Measurement data registers (page 88) ‣ Configuration registers (page 88) 2.6 Probe filter...

  • Page 18: Sensor Purge

    • After an RH for H adjustment is made. • At intervals (default 24 hours, configurable between 1 hour ... 1 week using Vaisala Insight software, Modbus, or Indigo transmitters). Purge is postponed by 30 minutes if H present or ambient humidity is not steady.

  • Page 19: Measurement Filtering Factor

    ‣ Example of configuring filtering factor with Indigo80 handheld indicator (page 50) 2.10 Connectivity to Vaisala Insight software The probe can be connected to Vaisala Insight software using a Vaisala USB cable (item code 242659) or Vaisala Indigo USB adapter (item code USB2). With the Insight software, you can: •...
  • Page 20 • Digital output or 3 analog outputs (depending on the transmitter model) • 2 configurable relays • USB-C connection to Vaisala Insight PC software for easy configuration access Available features vary depending on the Indigo transmitter model. For more information on Indigo transmitters, see www.vaisala.com/indigo.

  • Page 21: H 2 O 2 Measurement

    PEROXCAP sensor to fail within a day, and the sensor will not recover. PEROXCAPâ sensor technology works using measurements from two Vaisala HUMICAPâ sensors. HUMICAP sensors guarantee quality and reliability, with their reputation for repeatability, accuracy, excellent long-term stability, and negligible hysteresis – even in the most demanding high-concentration H applications in atmospheric pressure.

  • Page 22: Typical Applications

    HPP271 User Guide M211888EN-E Figure 2 Operating principle of PEROXCAP measurement HUMICAP sensor with a catalytic layer (under the probe filter). This sensor only senses water vapor. HUMICAP sensor without a catalytic layer (under the probe filter). This sensor senses the air mixture with both hydrogen peroxide vapor and water vapor.

  • Page 23: Figure 3 Example Behavior Of H

    Chapter 3 – H2O2 measurement The probe is not intended to be used in vacuum applications. Vaporized hydrogen peroxide is used for bio-decontamination in several applications from healthcare and pharmaceutics to food and beverage industry. Vaporized hydrogen peroxide is an easy-to-use and effective bio-decontaminating agent that destroys the full spectrum of biological contaminants including micro-organisms such as bacterial spores, mycobacteria, and non-enveloped, non-lipid viruses.
  • Page 24 HPP271 User Guide M211888EN-E In the non-condensing bio-decontamination cycle example shown in Figure 3 (page 23): • In the dehumidification phase, RH (and RS) decreases. • When the conditioning phase starts, H concentration rises rapidly. There is also a rapid increase in RS, which indicates the humidity caused by both H vapor and water vapor.

  • Page 25: Installation

    Seal the lead-through on the metal body of the probe. The figure shows an example installation using Vaisala spare part gland HPP271MOUNTINGSET1. Nut for tightening the probe in place Nut for mounting the gland...
  • Page 26 Mount the H and humidity probe from the probe body. The figure shows an example installation using Vaisala spare part wall mounting set (HPP272WALLMOUNT). Let the signal cable hang loosely so that it makes a bend. This prevents condensing water from running to the probe along the cable.

  • Page 27: Wiring

    Chapter 4 – Installation More information ‣ HPP271MOUNTINGSET1/HPP272MOUNTINGSET1 dimensions (page 82) ‣ HPP271MOUNTINGSET2/HPP272MOUNTINGSET2 dimensions (page 84) ‣ HPP272WALLMOUNT dimensions (page 85) 4.1 Wiring Use shielded cables and ground the cable shield. Figure 4 Pins on the probe M12/5 male connector Pin # Function Notes Wire color...

  • Page 28: Figure 5 Wiring Example For Connecting The Probe To A Plc In

    HPP271 User Guide M211888EN-E Pin # Function Notes Wire color Output control and Floating = RS-485 Grey purge trigger in analog Grounded = Analog outputs mode If you want to be able to trigger a purge manually in the analog mode, do not connect pin #5 permanently to ground, but instead, use a relay or similar to control the pin.

  • Page 29: Power Supply

    Chapter 4 – Installation Probe RS-485 host Pin #4 RS-485 + RS-485 + RS-485 - Pin #2 RS-485 - RS-485 common Pin #5 DC power supply Pin #1 Power supply Pin #3 Power GND RS-485 common Figure 6 Wiring example for RS-485 connection (Modbus communication) More information ‣...

  • Page 30: Figure 7 Pins On The Probe M12/5 Male Connector

    HPP271 User Guide M211888EN-E Figure 7 Pins on the probe M12/5 male connector 1. If the probe is powered on, power off the probe. 2. Select the output mode with pin #5: a. To set the probe in analog mode, connect pin #5 to ground. b.

  • Page 31: Operation

    Chapter 5 – Operation 5. Operation 5.1 Probe start-up When powered on, the probe starts up within 2 seconds and the digital/analog outputs are activated. The probe performs a start-up purge, which takes approximately 4 minutes. During the purge, hydrogen peroxide measurements are not available. If the probe is in analog mode, analog outputs are in the error state (default: 3.6 mA) during the purge.

  • Page 32: Figure

    (for example, 10 ppm) for a set time. You can configure the Low H threshold activation and deactivation levels and the activation and deactivation delays with Vaisala Insight PC software and Modbus registers. After the activation delay, Normal output resumes after measurement...

  • Page 33: Configuring Low H Threshold With Insight

    Insight • HPP270 probe SW version 1.3.6 or above • Computer with Vaisala Insight software installed • Vaisala USB connection cable (item code 242659) or Vaisala Indigo USB adapter (item code USB2) You can configure the H levels at which the Low H threshold feature is activated and deactivated, and the related delays, with Insight PC software.

  • Page 34: Modbus

    HPP271 User Guide M211888EN-E 3. Enable the Low H threshold feature by sliding the selection switch to the right. When enabled, the Low H threshold feature remains in use also after probe reset. 4. In the Activation level field, define the H level where the Low H threshold Activation delay starts.

  • Page 35: Operation In Analog Mode

    Chapter 5 – Operation More information ‣ Modbus reference (page 86) ‣ Setting probe in analog or digital mode (page 29) ‣ Wiring (page 27) 5.5 Operation in analog mode In analog output mode, the probe outputs the readings of two measurement parameters (one parameter in each analog output channel).

  • Page 36: Analog Output Overrange Examples

    HPP271 User Guide M211888EN-E You can change or disable the clipping and error limits using Vaisala Insight software or Modbus configuration registers. Changing the limits does not affect the scaling of the outputs. The definable range for each limit is 0 ... 20 %. The maximum values for limits extend the analog output range to 0.8 mA at the low end of the scale, and to 23.2 mA at the high end of...

  • Page 37: Figure 11 Analog Output Overrange Example With Clipping And Error Limits

    Chapter 5 – Operation Output signal, Clipping limit 20.8 High end of scale Error level 2000 2100 2200 Measured H O concentration, ppm Analog signal Figure 11 Analog output overrange example with clipping and error limits Example: Clip the high end of the output at 2100 ppm, but do not enter the error state at all Configure the high-end clipping limit and error limit as follows: •...

  • Page 38: Figure 12 Analog Output Overrange Example With Clipping Only

    HPP271 User Guide M211888EN-E Output signal, Clipping limit 20.8 High end of scale 2000 2100 Measured H O concentration, ppm Analog signal Figure 12 Analog output overrange example with clipping only Example: Do not clip the output at all, but enter the error state at 2200 ppm Configure the high-end clipping limit and error limit as follows: •...

  • Page 39: Triggering Purge In Analog Mode

    Chapter 5 – Operation Output signal, Error limit 21.6 High end of scale Error level 2000 2200 Measured H O concentration, ppm Analog signal Figure 13 Analog output overrange example with no clipping, only error state when error limit is exceeded 5.5.3 Triggering purge in analog mode In the analog mode, pin #5 in the probe's M12 male connector is connected to ground.

  • Page 40: Using Probe With Indigo Transmitters

    Note that Indigo200 transmitters switched from a WLAN configuration interface to a USB-C cable configuration interface (Vaisala Insight PC software) in 2022. For instructions on configuring HPP270 probes with the earlier WLAN interface, see the earlier HPP271 User Guide revision M211888EN-D, available at docs.vaisala.com.

  • Page 41: Attaching Hpp270 Probes To Indigo300 Transmitter

    Chapter 6 – Using probe with Indigo transmitters Figure 15 Attaching probes to Indigo 1. Connect the cable to the probe. 2. Insert the other end of the cable in Indigo'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.

  • Page 42: Figure 16 Attaching Hpp271 To Indigo300

    HPP271 User Guide M211888EN-E OPEN >> OPEN >> Figure 16 Attaching HPP271 to Indigo300 Probes and probe cables are locked in place with the locking wheel. Never turn from the probe body or the cable connector. To connect probe cables, insert the cable into the transmitter connector and hold in place while turning the locking wheel.

  • Page 43: Attaching Probes To Indigo500 Transmitters

    If you want to configure the probe settings, such as purge interval, you must do that before connecting the probe to the transmitter. To configure the probe, you can use the free Vaisala Insight PC software. For more information, see your probe's user guide and visit www.vaisala.com/insight.

  • Page 44: Figure 17 Connecting Measurement Devices To Indigo500

    HPP271 User Guide M211888EN-E Figure 17 Connecting measurement devices to Indigo500 Connection cable, probe 1 Connection cable, probe 2 (dual-device support in Indigo520) Measurement device to be connected as probe 2 (GMP252 example) Measurement device to be connected as probe 1 (HMP7 example) The connector of the connection cable (M12 5-pin A-coded female)

  • Page 45: Using Probe With Indigo80 Handheld Indicator

    7. Using probe with Indigo80 handheld indicator 7.1 Indigo80 handheld indicator Figure 18 Indigo80 handheld indicator Vaisala Indigo80 Handheld Indicator is a portable diagnostics tool that accommodates up to two Vaisala Indigo-compatible probes or transmitters for measuring a wide range of parameters. With the indicator, you can: •...

  • Page 46: Probe Compatibility

    HPP271 User Guide M211888EN-E 7.1.1 Probe compatibility The Indigo80 handheld indicator is tested for compatibility with HPP270 probes that have firmware version 1.4.0 or newer. Probes with older firmware versions may have limited compatibility with the indicator. CAUTION! Do not use Indigo80 in low-power mode if you are logging data in a hydrogen peroxide environment.

  • Page 47: Connecting Probes To Indigo80

    • Probe connection cable (cable 272075SP or flat cable CBL210493SP: see accessory information) Up to two Vaisala Indigo-compatible probes or transmitters can be connected to the ports located on the bottom of Indigo80. You can connect and disconnect devices both when the indicator is powered on and when it is off.

  • Page 48: Figure 21 Connecting Probes To Indigo80

    HPP271 User Guide M211888EN-E Figure 21 Connecting probes to Indigo80 M12-5F ports on the bottom of Indigo80 for connecting compatible Vaisala devices. Ports are labeled M12-5M A-coded cable connector M12-5F A-coded cable connector HPP271 probe, displayed as Indigo80 HPP272 probe, displayed as Indigo80 1.

  • Page 49: Configuring Probe Features With Indigo80 Handheld Indicator

    The available features depend on the probe model and firmware version. Accessing certain configuration options for your probe requires using the free Insight PC software, downloadable at www.vaisala.com/insight. 1. Connect the probe(s) to the indicator. 2. Open the main menu by pressing 3.

  • Page 50: Example Of Configuring Filtering Factor With Indigo80 Handheld Indicator

    HPP271 User Guide M211888EN-E 7.3.1 Example of configuring filtering factor with Indigo80 handheld indicator • Probe connection cable (cable 272075SP or flat cable CBL210493SP: see accessory information) The filtering factor allows averaging the output if the measuring environment produces occasional exceptionally high or low readings. This example shows how to configure the filtering factor as 0.9 using the Indigo80 handheld indicator.
  • Page 51 Chapter 7 – Using probe with Indigo80 handheld indicator The environment settings available via Indigo80 correspond to the environmental compensation settings of the probe. Therefore, Environment settings and Settings > Compensation setpoints are interconnected: the configuration set in either menu is applied to both. 1.

  • Page 52: Vaisala Insight Pc Software

    • 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 (item code 242659) or Vaisala Indigo USB adapter (item code USB2). 8.1 Connecting to Insight software •...
  • Page 53 Chapter 8 – Vaisala Insight PC software 4. Wait for Insight software to detect the probe.

  • Page 54: Maintenance

    HPP271 User Guide M211888EN-E 9. Maintenance 9.1 Cleaning the probe CAUTION! Do not remove the filter. CAUTION! Do not attempt to clean the sensors under the filter in any way. Avoid exposing the probe to cleaning agents for unnecessarily long periods of time.

  • Page 55: Sensor Vitality Information In Insight

    The status of the sensor can be reviewed from the Diagnostics Data view in Vaisala Insight PC software (Devices > [probe name] > Diagnostics). In the Diagnostics Data view, the condition of the sensor is shown as a percentage (0 …...

  • Page 56: Field Calibration And Adjustment Overview

    To ensure fully accurate calibration and adjustment results, use the traceable calibration and adjustment services provided by Vaisala. When using Vaisala Humidity Calibrator HMK15 for calibration, it is not necessary to remove the probe filter when inserting the probe into the calibration chamber.

  • Page 57: Rh For H 2 O 2 Calibration And Adjustment

    Note that calibration in vapor is a highly advanced procedure that can be performed reliably only by using another, recently factory calibrated Vaisala HPP270 series probe as a reference instrument and successfully creating matching measurement conditions for both the reference probe and the probe that is being adjusted.

  • Page 58: With Insight Software

    • Computer with Windows operating system and Vaisala Insight software installed • Vaisala USB cable (item code 242659) or Vaisala Indigo USB adapter (item code USB2) for connecting the probe • A humidity calibrator to create two different humidity levels, for example, Vaisala HMK15 Humidity Calibrator.
  • Page 59 Chapter 9 – Maintenance CAUTION! Do not expose the probe to H vapor when the probe is in calibration mode and sensor heating is off. Exposure to H condensation can cause the PEROXCAP sensor to fail within a day, and the sensor will not recover. Because the stabilization of humidity takes time, you should expect the adjustment procedure to take at least 30 minutes for each adjustment point.

  • Page 60: Adjusting Rh For H With Indigo80 Handheld Indicator

    (page 81)). • A humidity calibrator to create two different humidity levels, for example, Vaisala HMK15 Humidity Calibrator. Note that the humidity difference between the dry point and wet point must be at least 40 %RH. CAUTION! Do not expose the probe to H vapor when the probe is in calibration mode and sensor heating is off.
  • Page 61 Chapter 9 – Maintenance 8. Open the Calibration mode menu and select the RH and T adjustment mode. 9. Select RH for H₂O₂ adjustment. 10. Insert the probe head in the first reference environment and wait for the measurement to stabilize.

  • Page 62: With Indigo200 Transmitter

    Accessories and spare parts (page 81)) • A humidity calibrator to create two different humidity levels, for example, Vaisala HMK15 Humidity Calibrator. Note that the humidity difference between the dry point and wet point must be at least 40 %RH. CAUTION!

  • Page 63: Adjusting H Measurement With Insight Software

    • Computer with Windows operating system and Vaisala Insight software installed (Insight software is available for download at http:// www.vaisala.com). • Vaisala USB cable (item code 242659) or Vaisala Indigo USB adapter (item code USB2) for connecting the probes.
  • Page 64 HPP271 User Guide M211888EN-E 1. Install your probe and the Vaisala HPP270 series probe used as reference in the calibration environment. Make sure their installation location is such that the probes' readings are comparable, that is, the environment is identical for both probes.

  • Page 65: Adjusting H With Indigo80 Handheld Indicator

    1. Install your probe and the Vaisala HPP270 series probe used as reference in the calibration environment. Make sure their installation location is such that the probes' readings are comparable, that is, the environment is identical for both probes.
  • Page 66 HPP271 User Guide M211888EN-E 10. Select Reference value, point 1 and wait for the measurements of the reference probe and the probe you are adjusting to stabilize. You can follow the stabilization of the probe that is connected to Indigo80 from the graph view that opens after selecting Reference value, point 1.

  • Page 67: Adjusting H With Indigo200 Transmitter

    Accessories and spare parts (page 81)) • A reference probe and a display device for viewing the reference measurement. Vaisala recommends using a Vaisala HPP270 series probe that has recently been factory-calibrated. • An H vapor chamber that can produce a stable H...
  • Page 68 HPP271 User Guide M211888EN-E 1. Install your probe and the reference probe in the calibration environment. Make sure their installation location is such that the probes' readings are comparable, that is, the environment is identical for both probes. 2. Connect the probe you are adjusting to the Indigo transmitter, and then connect the Indigo transmitter to Insight PC software.Wait until Insight detects the probe.

  • Page 69: Testing Analog Output Level With Insight

    • Computer with Windows operating system and Vaisala Insight PC software installed • Vaisala USB cable (item code 242659) or Vaisala Indigo USB adapter (item code USB2) for connecting the probes to Vaisala Insight PC software • Device for powering the probe and viewing the analog output test current (range: 0.000 …...

  • Page 70: Restoring Factory Adjustment With Indigo80 Handheld Indicator

    HPP271 User Guide M211888EN-E 8. Read the analog output from the probe in your device and verify that the probe output is correct. 9. After verifying the output, reconnect the probe to the Insight USB cable. 10. Go back to the Insight analog output configuration options in the >...

  • Page 71: Troubleshooting

    If you have a problem with using the probe, check the following tables before contacting Vaisala. If the problem you have is not listed in the tables, or if the proposed solution does not fix the problem, contact Vaisala technical support.
  • Page 72 Solution: In analog mode: The scaling of Check and change the analog output scaling with Insight the output is unsuitable, software (see Vaisala Insight PC software (page 52)). preventing the change from showing. In analog mode: The error level Check the probe diagnostics with the Insight software (see...
  • Page 73 Do not use the probe if the filter is broken. Remove the filter and visually check the sensors: • If the sensors are bent, broken, or disconnected, contact Vaisala technical support. • If the sensors are intact, change the filter. Be careful not to touch the sensors when the filter is off the probe.
  • Page 74 • If the sensors are bent, broken, or disconnected, contact Vaisala technical support. • If the sensors are intact, change the filter. Be careful not to touch the sensors when the filter is off the probe.
  • Page 75 Insight SW release, or contact Vaisala Support for earlier SW versions. In analog mode, there is no output signal (signal level is 0 mA) Problem: In analog mode, there is no output signal (signal level is 0 mA).
  • Page 76 0 mA, and the output remains 0 mA after 5 minutes, check the probe probe is performing start-up diagnostics with the Insight software (see Vaisala Insight PC purge or is in error state. software (page 52)). Triggering manual purge with Modbus cannot be completed...

  • Page 77: Analog Output Error State

    (page 52)). There is a probe or sensor error. Check the probe diagnostics with the Insight software (see Vaisala Insight PC software (page 52)). 10.2 Analog output error state The probe sets the analog output channel into a defined error level instead of the measured result in three situations: •...

  • Page 78: Technical Data

    HPP271 User Guide M211888EN-E 11. Technical data HPP271 Table 5 HPP271 measurement performance Property Description/Value Hydrogen peroxide Sensor PEROXCAPâ Measurement range 0 … 2000 ppm Measurement temperature range +5 … +50 °C (+41 … +122 °F) Repeatability at +25 °C (+77 °F): up to 500 ppm H ±10 ppm up to 1000 ppm H...

  • Page 79: Table 6 Hpp271 Inputs And Outputs

    Chapter 11 – Technical data 1000 1200 1400 1600 1800 2000 Reference H O [ppm] Figure 26 H measurement accuracy in 3 temperature ranges as function of H concentration (including non-linearity and repeatability; specification valid for range 10 … 2000 ppm H Table 6 HPP271 inputs and outputs Property Description/Value...

  • Page 80: Table 7 Hpp271 Operating Environment

    HPP271 User Guide M211888EN-E Property Description/Value Max. load 500 Ω Accuracy (typical) ±0.1 % of full scale Analog output temperature dependence 0.005 %/°C (0.003 %/°F) full scale Table 7 HPP271 operating environment Property Description/Value Operating temperature +0 … +70 °C (+32 … +158 °F) Storage temperature −20 …...

  • Page 81: Accessories And Spare Parts

    Connection cable to Indigo, 3 m (9.8 ft) INDIGOCABLEHD3M Connection cable to Indigo, 5 m (16 ft) INDIGOCABLEHD5M Connection cable to Indigo, 10 m (33 ft) INDIGOCABLEHD10M Vaisala Insight software for Windows available at www.vaisala.com/insight. For more information on ordering spare parts and accessories, visit store.vaisala.com.

  • Page 82: Dimensions

    HPP271 User Guide M211888EN-E 11.2 Dimensions 118.3 38.5 Ø=30 Ø=18.5 Ø=16/18.5 Figure 27 HPP271 dimensions More information ‣ HPP271MOUNTINGSET1/HPP272MOUNTINGSET1 dimensions (page 82) ‣ HPP271MOUNTINGSET2/HPP272MOUNTINGSET2 dimensions (page 84) 11.2.1 HPP271MOUNTINGSET1/HPP272MOUNTINGSET1 dimensions Figure 28 (page 83) shows the dimensions of the gland through-wall installation accessory HPP271MOUNTINGSET1/HPP272MOUNTINGSET1 in millimeters and [inches].

  • Page 83: Figure 28 Hpp271Mountingset1/Hpp272Mountingset1 Dimensions

    Chapter 11 – Technical data For an installation example, see Installation (page 25). 44 [1.73] 31 [1.22] 50 [1.97] Ø 30 [1.18] Ø 40 [1.57] Ø 8 [0.31] Ø 12 [0.47] Ø 5 [0.196] Ø 12 [0.47] 14 [0.55] [in] 24 [0.94] Figure 28 HPP271MOUNTINGSET1/HPP272MOUNTINGSET1 dimensions For more information on using the gland through-wall installation accessory, see...

  • Page 84: Hpp271Mountingset2/Hpp272Mountingset2 Dimensions

    HPP271 User Guide M211888EN-E More information ‣ Installation (page 25) 11.2.2 HPP271MOUNTINGSET2/HPP272MOUNTINGSET2 dimensions Figure 29 (page 84) shows the dimensions of the flange through-wall installation accessory HPP271MOUNTINGSET2/HPP272MOUNTINGSET2 in millimeters and [inches]. For an installation example, see Installation (page 25). 10 [0.39] Ø...

  • Page 85: Hpp272Wallmount Dimensions

    Chapter 11 – Technical data CAUTION! Note that in installations where only part of the probe is installed inside the process, the temperature outside of the process can have an effect on the probe measurement accuracy, especially if the temperature difference is significant.

  • Page 86: Appendix A. Modbus Reference

    HPP271 User Guide M211888EN-E Appendix A. Modbus reference A.1 Default communication settings Table 11 Default Modbus serial communication settings Description Default value Serial bit rate 19200 Parity Number of data bits Number of stop bits Modbus device address A.2 Function codes Table 12 Modbus function codes Function code Function code Name...

  • Page 87: 32-Bit Floating Point Or 32-Bit Integer Format

    Appendix A – Modbus reference A.3.1 32-bit floating point or 32-bit integer format Registers using 32-bit float data format are encoded using the binary32 encoding defined in IEEE 754. The format is also known as "single-precision floating point format". The least significant 16 bits of a floating point number are placed at the Modbus register listed in the table, while the most significant 16 bits are placed in the register with number/ address + 1, as specified in Open Modbus TCP Specification, Release 1.0.

  • Page 88: Modbus Registers

    HPP271 User Guide M211888EN-E A.4 Modbus registers Registers are numbered in decimal, starting from 1. Register addresses in actual Modbus messages (Modbus Protocol Data Unit (PDU)) are in hexadecimal and start from zero. Register number 1 corresponds to address 0 in the actual Modbus message. CAUTION! Reading the wrong register(s) may result in correct-looking values.

  • Page 89: Table 15 Modbus Configuration Data Registers (Writable)

    Appendix A – Modbus reference Table 15 Modbus configuration data registers (writable) Register Address Description Data Unit/Valid range number format 0300 Volatile value for 32-bit float pressure compensation 813.25 ... 1213.25 (value cleared at probe (default 1013.25 hPa) reset). Used for compensating the (Init copied from power- measurement for...
  • Page 90 HPP271 User Guide M211888EN-E Register Address Description Data Unit/Valid range number format 030E Low H threshold 16-bit 0 = Off boolean on/off 1 = On (default: 0 = Off) When enabled, the Low threshold feature remains in use also after probe reset.
  • Page 91 Appendix A – Modbus reference Register Address Description Data Unit/Valid range number format 1283 0502 Purge status / manual 16-bit When reading from start function register: status 1 ... 100 = Purge is in progress (progress shown as 1 ... 100%) 0 = Previous purge completed successfully, purge is not in progress...
  • Page 92 HPP271 User Guide M211888EN-E Register Address Description Data Unit/Valid range number format 1539 0602 Parity, number of data enum 0 = None, 8, 1 bits, number of stop bits 1 = None, 8, 2 2 = Even, 8, 1 3 = Even, 8, 2 4 = Odd, 8, 1 5 = Odd, 8, 2 (default: 1 = None, 8, 2)
  • Page 93 Appendix A – Modbus reference Register Address Description Data Unit/Valid range number format 1799 0706 Error output 32-bit float 0 ... 25 1801 0708 Low clipping limit 32-bit float % of scaled range 0 ... 20 = Clip the output when the measurement goes this many percent below the low end of the...
  • Page 94 HPP271 User Guide M211888EN-E Register Address Description Data Unit/Valid range number format 2050 0801 Output parameter 16-bit 0000 , 000A , or register 000E address Table 14 (page 88) for measurement register descriptions. 2051 0802 Scale low end 32-bit float Set the lower limit of the measurement scale for the output parameter...
  • Page 95 Appendix A – Modbus reference Register Address Description Data Unit/Valid range number format 2063 080E High error limit 32-bit float % of scaled range 0 ... 20 = Set the output in error state when the measurement goes this many percent above the high end of the scale NaN = Disable error limit at high end...

  • Page 96: Status Registers

    HPP271 User Guide M211888EN-E A.4.3 Status registers Table 16 Modbus device status registers (read-only) Register number Address Description Data format Notes 0200 Device status 16-bit 0 = Status OK. 1 = Critical error, maintenance needed. 2 = Error, device may recover automatically. 4 = Warning.

  • Page 97: Table 17 Modbus Measurement Status Registers (Read-Only)

    (%)) cycle will have a sensor vitality of 0 %. If you are using the probe in a demanding environment, contact Vaisala to arrange sensor maintenance or replacement once the sensor vitality value reaches 40...

  • Page 98: Table 19 Error Codes In Register 0201

    HPP271 User Guide M211888EN-E Table 19 Error codes in register 0201 (32-bit) Value of Error message Severity register 0201 Status OK. Firmware checksum mismatch. Critical Device settings corrupted. Critical Supply voltage too high. Error Internal voltage too low. Error Internal voltage too high. Error Humidity sensor failure (open circuit).

  • Page 99: Device Identification Objects

    "2020-01-31" CalibrationDate Calibration date in YYYY-MM-DD format. Empty string if not set/valid. "Vaisala/HEL" CalibrationText Calibration information text. Empty string if not set/valid. Vaisala-specific device information. A.4.5 Test value registers Table 22 Test value registers Register number Address Description Data format Value 7937...

  • Page 100: Modbus Communication Examples

    HPP271 User Guide M211888EN-E A.5 Modbus communication examples Reading H concentration value Device address used in the following examples is 240 (F0 The values returned by the device differ depending on the ambient conditions and/or device settings. Your device might not return exactly same values. Request Response Bytes on the line...
  • Page 101 Appendix A – Modbus reference Writing purge interval value Request Response Bytes on the line Description Bytes on the line Description (hexadecimal) (hexadecimal) (silence for 3.5 bytes) Start of Modbus RTU (silence for 3.5 bytes) Start of Modbus RTU frame frame HPP271 address HPP271 address...
  • Page 102 HPP271 User Guide M211888EN-E Communication description Value to write 0B40 = 2880 (minutes) (= 48 hours)

  • Page 103: Maintenance And Calibration Services

    Maintenance and calibration services Vaisala offers comprehensive customer care throughout the life cycle of our measurement instruments and systems. Our factory services are provided worldwide with fast deliveries. For more information, see www.vaisala.com/ calibration. • Vaisala Online Store at store.vaisala.com is available for most countries.
  • Page 106 www. v aisala.com...

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