HLS-442

HLS-442 Datasheet

HLS-442

Part	Datasheet
HLS-442	HLS-442 (pdf)

PDF Datasheet Preview
HLS-442 Automotive Hydrogen Leak Sensor The HLS-442 automotive hydrogen leak sensor monitors hydrogen concentrations of 0 in air. The sensor is a leak sensor developed in accordance to IEC 61508 SIL2 and explosion protected according to ATEX 100a. The predicted concentration is transmitted to the host via the CAN bus interface. HLS-442 utilizes self-calibration that is performed automatically when operated in air with normal hydrogen concentration. Therefore, the HLS-442 should not continuously be operated in elevated background levels of hydrogen. Ordering Information and Content Guide appear at end of datasheet. Figure 1 Added Value of Using HLS-442 Key Benefits & Features The benefits and features of HLS-442, Automotive Hydrogen Leak Sensor are listed below: Benefits • High sensitivity and excellent selectivity to hydrogen gas • Low cross sensitivity • Fast response time • Low power consumption • Long-term stability and reliability • Safety integrity level and explosion proof • Long lifetime • H2 in air • Accuracy ±3000 ppm at normal operation • Heated field-effect transistor technology • No detection towards HC, H2S, N2, CO, CO2, NOx, H2O • Humidity influence not detectable • Start-up time <5s • Speed of response t90 < 2s • Speed of recovery < 10s • CAN bus interface 500 kbit/s ISO11898-2 • PWM output on request • 75 mA typical • ESD and EMC protection • Operating temperature range to 85ºC • Designed for SIL2 IEC 61508 and ATEX 100a zone 2 • IP67 qualified with expected lifetime of 10 years ams Datasheet [v1-00] 2015-Mar-30 Page 1 Document Feedback Figure 2 HLS-442 Block Diagram HLS-442− GeneralDescription Detection of hydrogen gas leaks in hydrogen powered vehicles by installing the sensor • in the cabin ceiling • under the hood of the engine compartment • beneath the trunk lid of hydrogen powered vehicles Detection of hydrogen gas in and around hydrogen fueling stations Block Diagram The functional blocks of this device for reference are shown below: Timer Output Switch uController Watchdog Power Supply Connector Heater Switch LDO Voltage Regulation Heater Switch Resistor H2-Sensor Quantity TC Resistor H2-Sensor Plausibility FE Page 2 Document Feedback ams Datasheet [v1-00] 2015-Mar-30 HLS-442 − General Description Figure 3 HLS-442 Overview Power and CAN bus connector HLS-442 − Ordering & Contact Information Ordering & Contact Information Figure 18 Ordering Information Ordering Code HLS-442 Type CAN 500 kbit/s 1 Delivery Form Individually Wrapped Delivery Quantity Single Item Note s and/or Footnote s For availability of other variants contact ams. Buy our products or get free samples online at Technical Support is available at Provide feedback about this document at For further information and requests, e-mail us at For sales offices, distributors and representatives, please visit: Headquarters ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten Austria, Europe Tel +43 0 3136 500 0 Website: ams Datasheet [v1-00] 2015-Mar-30 Page 17 Document Feedback HLS-442 − RoHS Compliant & ams Green Statement RoHS Compliant & ams Green Statement RoHS The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not exceed by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes. ams Green RoHS compliant and no Sb/Br ams Green defines that in addition to RoHS compliance, our products are free of Bromine Br and Antimony Sb based flame retardants Br or Sb do not exceed by weight in homogeneous material . Important Information The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. Page 18 Document Feedback ams Datasheet [v1-00] 2015-Mar-30 HLS-442 − Copyrights & Disclaimer Copyrights & Disclaimer Copyright ams AG, Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed. ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services. ams Datasheet [v1-00] 2015-Mar-30 Page 19 Document Feedback Document Status HLS-442 − Document Status Document Status Product Status Definition Product Preview Pre-Development Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice Preliminary Datasheet Pre-Production Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice Datasheet Production Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade Datasheet discontinued Discontinued Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs Page 20 Document Feedback Page 22 Document Feedback ams Datasheet [v1-00] 2015-Mar-30

PDF Datasheet Preview

HLS-442

Automotive Hydrogen Leak Sensor

The HLS-442 automotive hydrogen leak sensor monitors hydrogen concentrations of 0 in air. The sensor is a leak sensor developed in accordance to IEC 61508 SIL2 and explosion protected according to ATEX 100a. The predicted concentration is transmitted to the host via the CAN bus interface. HLS-442 utilizes self-calibration that is performed automatically when operated in air with normal hydrogen concentration. Therefore, the HLS-442 should not continuously be operated in elevated background levels of
hydrogen.
Ordering Information and Content Guide appear at end of datasheet.

Figure 1 Added Value of Using HLS-442

Key Benefits & Features

The benefits and features of HLS-442, Automotive Hydrogen Leak Sensor are listed below:

Benefits
• High sensitivity and excellent
selectivity to hydrogen gas
• Low cross sensitivity
• Fast response time
• Low power consumption
• Long-term stability and reliability
• Safety integrity level and explosion
proof
• Long lifetime
• H2 in air
• Accuracy ±3000 ppm at normal operation
• Heated field-effect transistor technology
• No detection towards HC, H2S, N2, CO, CO2, NOx, H2O
• Humidity influence not detectable
• Start-up time <5s
• Speed of response t90 < 2s
• Speed of recovery < 10s
• CAN bus interface 500 kbit/s ISO11898-2
• PWM output on request
• 75 mA typical
• ESD and EMC protection
• Operating temperature range to 85ºC
• Designed for SIL2 IEC 61508 and ATEX 100a zone 2
• IP67 qualified with expected lifetime of 10 years
ams Datasheet [v1-00] 2015-Mar-30

Page 1 Document Feedback

Figure 2 HLS-442 Block Diagram

HLS-442− GeneralDescription

Detection of hydrogen gas leaks in hydrogen powered vehicles by installing the sensor
• in the cabin ceiling
• under the hood of the engine compartment
• beneath the trunk lid of hydrogen powered vehicles

Detection of hydrogen gas in and around hydrogen fueling stations

Block Diagram

The functional blocks of this device for reference are shown below:

Timer

Output Switch
uController

Watchdog

Power Supply

Connector Heater Switch LDO Voltage Regulation Heater Switch

Resistor

H2-Sensor Quantity TC

Resistor

H2-Sensor Plausibility FE

Page 2 Document Feedback
ams Datasheet [v1-00] 2015-Mar-30

HLS-442 − General Description

Figure 3 HLS-442 Overview

Power and CAN bus connector
HLS-442 − Ordering & Contact Information
Ordering & Contact Information
Figure 18 Ordering Information
Ordering Code HLS-442

Type CAN 500 kbit/s 1

Delivery Form Individually Wrapped

Delivery Quantity Single Item

Note s and/or Footnote s For availability of other variants contact ams.

Buy our products or get free samples online at Technical Support is available at Provide feedback about this document at For further information and requests, e-mail us at For sales offices, distributors and representatives, please visit:

Headquarters ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten Austria, Europe

Tel +43 0 3136 500 0 Website:
ams Datasheet [v1-00] 2015-Mar-30

Page 17 Document Feedback

HLS-442 − RoHS Compliant & ams Green Statement

RoHS Compliant & ams Green Statement

RoHS The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not exceed by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes.
ams Green RoHS compliant and no Sb/Br ams Green defines that in addition to RoHS compliance, our products are free of Bromine Br and Antimony Sb based flame retardants Br or Sb do not exceed by weight in homogeneous material .

Important Information The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

Page 18 Document Feedback
ams Datasheet [v1-00] 2015-Mar-30

HLS-442 − Copyrights & Disclaimer

Copyrights & Disclaimer

Copyright ams AG, Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.

Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with ams AG for current information. This product is intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed.
ams AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services.
ams Datasheet [v1-00] 2015-Mar-30

Page 19 Document Feedback

Document Status

HLS-442 − Document Status

Document Status Product Status

Definition

Product Preview

Pre-Development

Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice

Preliminary Datasheet

Pre-Production

Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice

Datasheet

Production

Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade

Datasheet discontinued

Discontinued

Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs

Page 20 Document Feedback
Page 22 Document Feedback
ams Datasheet [v1-00] 2015-Mar-30

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived HLS-442 Datasheet file may be downloaded here without warranties.

Datasheet ID: HLS-442 519796