968-036

DGS-H2S 968-036 March 2017 Digital Gas Sensor – Hydrogen Sulfide BENEFITS           HYDROGEN SULFIDE APPLICATIONS • Bad Breath/Halitosis Sensing • Air Quality Monitoring • Industrial Safety Sensing Low Power – 1 mW @ 1 minute sampling Calibrated & Temp. Compensated Output Fast Response < 30 seconds Simple Digital UART Interface Integrated T & RH Sensors Robust 10-year Estimated Lifetime ROHS Compliant Small form Factor UART to USB adapter provided Lightweight (< 2 oz.) DESCRIPTION SPEC Sensors now offers an easy way to add gas sensing to the Internet of Things. Combining our Screen Printed ElectroChemical sensor technology (SPEC Sensor™) with state-of-the-art electronics and algorithms, enables easy integration of small, lightweight, high performance, ultra-low power consumption gas sensing into wireless, portable, and networked solutions. MEASUREMENT PERFORMANCE CHARACTERISTICS Based on Standard Conditions 25 ºC, 50% RH and 1 atm Measurement Range 0 to 10 ppm Resolution 10 ppb (1) Measurement Accuracy 15% of reading Measurement Repeatability (2) < ± 3% of reading T90 Response Time (100 ppm step) Expected Operating Life < 30 seconds 1 mW for 1 minute triggered samples 12 mW for continuous sampling 5, 10 30, 60 second intervals > 5 years (10 years @ 25± 10C; 60 ± 30% RH) Operating Temperature Range -20 to 40 °C (-30 to 55 °C intermittent) Operating Humidity Range 15 to 95% (0 to 100% non-condensing intermittent) Mechanical Dimensions 1.75 x 0.82 x 0.35 in. (44.5 x 20.8 x 8.9 mm) Weight < 2 Ounces Power Consumption NOTES: 1) 2) 3) 4) Based on Standard Deviation of noise at zero, 1 Hz measurement 60 second averaging. When zeroed after 60 minutes of power-on stabilization Based on consecutive measurements of 100 ppm Contact factory for custom calibration for improved measurement performance PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the SPEC Sensors standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2011-2017, SPEC Sensors LLC DGS-H2S 968-036 March 2017 ABSOLUTE MAXIMUM RATINGS Parameter Maximum Concentration Supply Voltage Storage Temperature Storage Humidity Storage Pressure Storage Time Operating Temperature Operating Humidity Operating Pressure Operating Temperature Operating Humidity Operating Pressure ESD Rating Conditions Short term exposure Regulated Vapor sealed @ 50% RH Non-condensing, vapor sealed Vapor sealed Vapor sealed < 10 hours < 10 hours, Non-Condensing Transient pulses Continuous Continuous, Non-Condensing Continuous Human Body Model Min. Rec. 0 2.6 5 20 0.8 -40 0 -.5 -30 10 0.8 2 1000 20 50 1 12 0 25 50 1 Max. 5000 3.6 30 80 1.2 50 100 .5 50 95 1.2 8 Units ppm V ̊C % RH atm Months ̊C % RH atm ̊C % RH atm kV ELECTRICAL CHARACTERISTICS Parameter Supply Current Power Consumption Conditions Min. V+ = 3.0 V V+ = 3.0 V 0.05 0.15 Typ. Max. 4 12 Units mA mW CROSS SENSITIVITY The following table lists the relative response of common potential interfering gases, and the concentration at which the data was gathered. Gas/Vapor Hydrogen Sulfide Chlorine Nitrogen Dioxide Sulfur Dioxide Nitric Oxide Carbon Monoxide Ozone Methane Ammonia n-Heptane Applied Concentration (ppm) 10 10 10 ppm 20 50 400 5 500 100 ppm 500 PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the SPEC Sensors standard warranty. Production processing does not necessarily include testing of all parameters. Typical Response ppm H2S 10 -2.2 -2.0 1.7 1.2 1.1 -0.9 0.1 0.1 40C) for more than 1 month  Low Humidity Operation (< 15% RH) for more than 3 months  Highly contaminated air over a prolonged period  High levels of particles or soot (unless proper filtering is provided)[2] (1) Use of porous PTFE membrane or filter cap may address this concern) (2) Use of replaceable filter recommended where dust and particulate is expected. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the SPEC Sensors standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2011-2017, SPEC Sensors LLC DGS-H2S 968-036 March 2017 SENSOR STORAGE, HANDLING AND SOLDERING This information embodies various general recommendations concerning the storage, handling, and manual soldering conditions for SPEC SENSORS CSPEC Modules. It is only applicable for modules guaranteed by SPEC SENSORS stated in SPEC SENSORS Sensor Specification Sheet. Moreover, SPEC SENSORS' modules are NOT warranted and should NOT be used in high temperature soldering (reflow) or pre-tinning baths. Sensor & Module Handling Handle sensors with care. Take precautions, including but not limited to the following: A. DO NOT apply excessive pressure to the top or bottom of the sensor module. B. Whenever possible, handle or make contact with the sensor module from the sides of the PCB or substrate. C. Light vacuum pressure is possible during handling, DO NOT apply vacuum over gas sensor port. D. If the sealed sensor package is opened, DO NOT re-seal using vacuum or nitrogen gas. DO NOT reseal with desiccant. E. DO NOT obstruct the gas sensor port by making direct contact with any tape, apparatus, weights, etc. F. DO NOT use silicone or other conformal coatings around the sensor or gas port-holes. G. Operators are requested to wear powder free antistatic gloves. Manufacturing Assembly Floor Environment SPEC SENSORS recommends that the manufacturing assembly floor environment be maintained at controlled conditions: A. Temperature: 18 - 26°C B. Relative Humidity: 40 to 60% C. Pressure: 1.0 ± 0.2 atm Sensor & Module Storage Conditions The shelf life for sealed, packaged components is 12 months from the pack seal date, when stored in the factorysealed bag under the following conditions: A. Temperature: 5 to 25 °C B. Relative Humidity: 20 to 80% C. Pressure: 1.0 ± 0.2 atm D. Storage Time: 12 months When moving from Storage Conditions to the Manufacturing Assembly Floor Environment, the sensors should be allowed to equilibrate at the new conditions for at least 24 hours prior to manufacturing. Module Attach Soldering Process Hand solder only. Keep the soldering iron or solder process tool away from the sensor. The sensor should not see pre-heat temperatures above 70 °C. There have been suggested cases where a heat sink cover over the sensor may be applicable to protect the sensor during processing. No Application notes to this approach available. Only to be used as reference only. A. DO NOT heat sensor above 70 °C B. Hand or peripheral process type approach C. Use solder wire alloy with the lowest possible eutectic temperature D. Use lowest possible soldering iron temperature E. Contact the host board with the soldering iron at a 45° angle on the solder pad F. Keep the soldering iron away from the top and bottom of the sensor module G. DO NOT place in reflow, wave or IR reflow type processes H. DO NOT place mounted board In a wash PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the SPEC Sensors standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2011-2017, SPEC Sensors LLC