Product DescriptionBH-4s portable multi gas detector could detect
combustible gas, O2 and other two types toxic gases continuously
and simultaneously.It is widely used in the area where
explosion-proof is required or toxic gas leaks, like underground
channels or mining industry,so as to protect the workers' life and
avoid damage on the relevant equipments. Detailed Photos1)
Advanced MCU control with low power consumption2) Adjustable low
and high alarm level3) Adjustable calibrating level4) High
concentration protection for combustible gas5) Self test for
the combustible gas sensor6) Low battery
indication7) Replaceable sensor module8) Self-adjustment
function9) Visual and audible alarm with vibration10) STEL and TWA
alarming for toxic gases11) Advanced self-examination and
self-renovation function12) Password management to avoid wrong
operation13) Explosive proof housingProduct
Parameters Operating & Storage EnvironmentTemperature:
-20°C~55°C (-4F~122F)Humidity: 5%-95% (Relative humidity
non-condensing)Pressure: 95~110kPaSampling methodDiffusion
typeDetecting RangeCO: 0~1000ppmH2S:0~100 PPMO2:
0~30%volCombustible Explosive Gas (Ex / LEL / CH4):
0~100%LELSensorO2 /H2S / CO: plug-in electrochemical sensorAlarm
Typelow & high alarm, multiple gas alarm, sensor alarm, battery low
alarm, prompt tone, automatic shutdown alarmResolution0.1%VOL (O2),
1ppm (CO), 0.1ppm (H2S), 1%LEL (EX) Accuracy3% F.SResponse
time10sRepeatability1%Zero drift1%Data record500 pcs of data
storageDisplayAlphanumeric large LCD displays the real time gas
concentration and alarm stageBacklightAutomatically activated when
working in poor lighting environment or the alarm sounding or the
button is knobbed down.Self-checking FunctionSelf-checking Battery
power, display, sensor, hardware
failureExplosion-proofEXiaIICT4Protection gradeIP65Power
SupplyRechargeable lithium batteryDetecting Gas NoDetecting
GasGasMeasure RangeResolutionAlarm Point(High / Low)1Combustible
GasEX0-100%LEL /0-100%VOL1%LEL/1%VOL20 / 50% LEL2OxygenO20-25%
/30%VOL0.1%VOL19.5% / 23.5%VOL3Hydrogen
Sulfide H2S0-50/100/200/1000 ppm0.1 ppm10 / 20 ppm4Carbon
MonoxideCO0-500/1000/2000/5000 ppm1 ppm50 / 150 ppm5Nitrogen
DioxideNO20-20/50/1000 ppm0.1 ppm5 / 10 ppm6Nitric
OxideNO0-250/500/1000 ppm1 ppm50 / 150 ppm7Carbon DioxideCO20-5000
ppm /0-1%/5%/10%VOL1 ppm/0.1%VOL1000 /2000 ppm8Sulfur
Dioxide SO20-20/50/100/200/1000 ppm0.1 /1 ppm5 / 10
ppm9ChlorineCL20-20/100/1000 ppm0.1 ppm5 / 10
ppm10AmmoniaNH30-50/100/500/1000 ppm0.1 ppm20 / 50
ppm11HydrogenH20-1000/5000 ppm1 ppm50 /150
ppm12Phosphine PH30-5/20/50/100/500/1000 ppm0.1 ppm5 / 10
ppm13Hydrogen Chloride HCL0-20/500/1000 ppm0.01/0.1 ppm5 / 10
ppm14Chlorine Dioxide CLO20-10/50/100 ppm0.1 ppm5 / 10
ppm15Hydrogen CyanideHCN0-50/100 ppm0.01/0.1 ppm10 / 20
ppm16Ethylene OxideC2H4O0-10/20/50/100/200/500 ppm0.1 /1 ppm20 / 50
ppm17OzoneO30-10/20/100 ppm0.1 ppm2 / 5
ppm18Formaldehyde CH2O0-20/50/100 ppm0.1 /1 ppm5 / 10
ppm19Hydrogen Fluoride HF0-1/10/50/100 ppm0.01 /0.1 ppm2 / 5
ppm20Methylbenzene 0-1/10/20/50/100 ppm0.01 /0.1 ppm5
/ 10 ppmNote: Other gas and measure range not listed are all
support customize, please contact us for more details. Our
Customers and Patent CertificateAbout Bosean Scope of
BusinessBosean was founded in 2013, specializing in the development
and production of gas detectors, gas analyzers and rangefinder.At
present, our research and development instruments have been spread
all over the world.R&D and ProductionBosean has always strictly
implemented the ISO9001 quality management system.We adhere to the
high standards of product quality,strict requirements, adopting the
world-class production equipment,advanced management and production
experience,developing the high-quality testing
equipment. Service teamBosean has a strong sales team and a
comprehensive service process to serve end customers around the
world.Whenever you have any questions, you can contact us at any
time. Warehousing LogisticsBosean has an independent
warehousing base. It integrates instrument research and
development, manufacturing,warehousing and delivery. It supports
small batch spot delivery and mass customization. FAQQ1:Are
you a trading company or manufacturer ?
A1:We
aremanufacturer.Q2:What about the payment method?A2:T/T, Paypal,
Western Union, L/C is available.Q3:Does your company accept
customization?A3:We do customizing service for customers.Q4:What
about the Shipment?A4:We'll choose proper transportation mode based
on theweight of goods, usually arrange shipment by air expresssuch
as DHL,FEDEX,TNT or UPS.Q5:What about after-sale service?A5:12
months warranty for all kinds of products./* March 10, 2023
17:59:20 */!function(){function s(e,r){var
a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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