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Portable Gas Detectors

MS104K-L Portable Single-Gas Detector

BTYQ-MS104K-L

Front view of the Eranntex portable pump-suction single gas detector model BTYQ-MS104K-L shown with its fully extended telescopic sampling probe for remote gas detection.

Certificates & documents

View all (3)
Preview of Environmental Labeling (Type II) Product Verification Certificate ZII26080321001CertificateZII26080321001
Preview of China Explosion-Proof Certificate of Conformity CCRI 24.2245XCertificateCCRI 24.2245X
Preview of China Compulsory Certification (CCC) 2025081801003543Certificate2025081801003543

Product overview

A portable pump-sampling gas detector for application-specific single-gas monitoring.

Portable pump sampling for single-gas monitoring

BTYQ-MS104K-L is a portable single-gas detector designed for rapid leak checks and concentration monitoring. Its built-in pump has adjustable flow and supports pumped, diffusion and combined pump-plus-diffusion sampling modes.

The instrument provides pump-blockage alarms, Type-C data communication, data logging and man-down alarming. The target gas, measuring range and sensor principle are selected for the operating environment and must be confirmed for each requested configuration.

Sampling method
Pump
Ingress protection
IP66
Operating temperature
-20 °C to 55 °C — Typical operating range.
Request a QuoteView specifications

Contact us to confirm the gas combination and measuring ranges for your application.

Technical specifications

Confirmed technical specifications
Ingress protectionIP66
Dimensions165 × 64 × 61 mm (maximum L × W × H)
WeightApprox. 280 g
Battery voltage7.4 V
Battery capacity1,250 mAh — Equivalent source representation: 3.7 V / 2500 mAh.
Operating temperature-20 °C to 55 °C — Typical operating range.
Data storage100,000 records
Alarm volume> 95 dB — At 30 cm.
Sampling methodPump
Battery runtime12 h — Pump operation; with the pump off, diffusion operation using an electrochemical sensor exceeds 100 hours.
Display size2 in
Standard gas configuration
1 gas
Expanded gas configuration
No higher gas-count expansion documented
Typical measurement accuracy
≤ ±3% FS; higher-accuracy sensors available
Response time
T90 ≤ 20 s
Recovery time
≤ 30 s
Operating humidity
10–95% RH, non-condensing
Explosion protection
Ex ia IIC T4 Ga
Housing
High-strength, corrosion-resistant, flame-retardant polycarbonate with rubber protective sleeve; drop resistance ≥5 m
Enclosure option
IP68 available as a custom configuration
Diffusion runtime
Over 100 h with pump off and an electrochemical sensor

Supported gas configurations

Review the documented gas and measuring-range options, then request compatibility confirmation for the required configuration.

0 gases selected · up to 1Select one measuring range for each required gas.
Gas

Combustible Gas · EX

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 %Vol
Resolution0 %Vol
Measuring range0–1,000 ppm
Resolution1 ppm
Gas

Oxygen · O₂

Measuring range0–30 %Vol
Resolution0 %Vol
Measuring range0–100 %Vol
Resolution0 %Vol
Gas

Carbon Monoxide · CO

Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Measuring range0–5,000 ppm
Resolution1 ppm
Measuring range0–10,000 ppm
Resolution1 ppm
Gas

Hydrogen Sulfide · H₂S

Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–500 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
4 of 51 gases shown · 122 gas/range options

For gases not listed in this table, contact technical sales to discuss your requirements.

Read all 122 documented gas and measuring-range options
Gas

Hydrogen Sulfide · H₂S

Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–500 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Gas

Carbon Monoxide · CO

Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Measuring range0–5,000 ppm
Resolution1 ppm
Measuring range0–10,000 ppm
Resolution1 ppm
Gas

Oxygen · O₂

Measuring range0–30 %Vol
Resolution0 %Vol
Measuring range0–100 %Vol
Resolution0 %Vol
Gas

Methane · CH₄

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 %Vol
Resolution0 %Vol
Gas

Carbon Dioxide · CO₂

Measuring range0–5 %Vol
Resolution0 %Vol
Measuring range0–20 %Vol
Resolution0 %Vol
Measuring range0–100 %Vol
Resolution0 %Vol
Measuring range0–5,000 ppm
Resolution1 ppm
Measuring range0–50,000 ppm
Resolution1 ppm
Gas

Ammonia · NH₃

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution0 ppm
Measuring range0–5,000 ppm
Resolution1 ppm
Gas

Chlorine · Cl₂

Measuring range0–20 ppm
Resolution0 ppm
Measuring range0–200 ppm
Resolution0 ppm
Gas

Sulfur Dioxide · SO₂

Measuring range0–20 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution0 ppm
Measuring range0–5,000 ppm
Resolution1 ppm
Gas

Nitric Oxide · NO

Measuring range0–20 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution0 ppm
Measuring range0–5,000 ppm
Resolution1 ppm
Gas

Nitrogen Dioxide · NO₂

Measuring range0–20 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Gas

Hydrogen · H₂

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 %Vol
Resolution0 %Vol
Measuring range0–1,000 ppm
Resolution0 ppm
Measuring range0–20,000 ppm
Resolution1 ppm
Measuring range0–40,000 ppm
Resolution1 ppm
Gas

Volatile Organic Compounds · VOC

Measuring range0–20 ppm
Resolution0 ppm
Measuring range0–200 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Measuring range0–10,000 ppm
Resolution1 ppm
Gas

Hydrogen Cyanide · HCN

Measuring range0–30 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Gas

Hydrogen Chloride · HCl

Measuring range0–20 ppm
Resolution0 ppm
Measuring range0–200 ppm
Resolution0 ppm
Gas

Phosphine · PH₃

Measuring range0–5 ppm
Resolution0 ppm
Measuring range0–20 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Gas

Combustible Gas · EX

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 %Vol
Resolution0 %Vol
Measuring range0–1,000 ppm
Resolution1 ppm
Gas

Chlorine Dioxide · ClO₂

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Gas

Ethylene Oxide · ETO

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution0 ppm
Gas

Phosgene · COCl₂

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–10 ppm
Resolution0 ppm
Gas

Silane · SiH₄

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–50 ppm
Resolution0 ppm
Gas

Fluorine · F₂

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Gas

Hydrogen Fluoride · HF

Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–50 ppm
Resolution0 ppm
Gas

Formaldehyde · CH₂O

Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–50 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution1 ppm
Gas

Hydrogen Bromide · HBr

Measuring range0–50 ppm
Resolution0 ppm
Gas

Diborane · B₂H₆

Measuring range0–10 ppm
Resolution0 ppm
Gas

Arsine · AsH₃

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–10 ppm
Resolution0 ppm
Gas

Ozone · O₃

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Gas

Germane · GeH₄

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–50 ppm
Resolution0 ppm
Gas

Hydrazine · N₂H₄

Measuring range0–1 ppm
Resolution0 ppm
Measuring range0–300 ppm
Resolution0 ppm
Gas

Tetrahydrothiophene · THT

Measuring range0–50 mg/m3
Resolution0 mg/m3
Gas

Bromine · Br₂

Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–50 ppm
Resolution0 ppm
Gas

Acetylene · C₂H₂

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution1 ppm
Gas

Ethylene · C₂H₄

Measuring range0–10 ppm
Resolution0 ppm
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–1,000 ppm
Resolution1 ppm
Gas

Ethanol · C₂H₆O

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Gas

Methanol

Measuring range0–100 %LEL
Resolution0 %LEL
Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Gas

Nitrogen Oxides · NOₓ

Measuring range0–100 ppm
Resolution0 ppm
Measuring range0–500 ppm
Resolution0 ppm
Measuring range0–2,000 ppm
Resolution1 ppm
Gas

Carbon Disulfide · CS₂

Measuring range0–50 ppm
Resolution0 ppm
Gas

Acrylonitrile · C₃H₃N

Measuring range0–100 ppm
Resolution0 ppm
Gas

Nitrous Oxide · N₂O

Measuring range0–1,000 ppm
Resolution1 ppm
Gas

Methylamine

Measuring range0–50 ppm
Resolution0 ppm
Gas

Nitrogen · N₂

Measuring range0–100 %Vol
Resolution0 %Vol
Gas

Benzene · C₆H₆

Measuring range0–200 ppm
Resolution0 ppm
Gas

Toluene · C₇H₈

Measuring range0–200 ppm
Resolution0 ppm
Gas

Xylene · C₈H₁₀

Measuring range0–200 ppm
Resolution0 ppm
Gas

Styrene · C₈H₈

Measuring range0–200 ppm
Resolution0 ppm
Gas

Vinyl Chloride · C₂H₃Cl

Measuring range0–200 ppm
Resolution0 ppm
Gas

Trichloroethylene · C₂HCl₃

Measuring range0–200 ppm
Resolution0 ppm
Gas

Tetrachloroethylene (PID) · C₂Cl₄

Measuring range0–200 ppm
Resolution0 ppm
Gas

Methyl Bromide · CH₃Br

Measuring range0–200 mg/m3
Resolution0 mg/m3
Measuring range0–100 ppm
Resolution0 ppm
Gas

Ethanethiol · C₂H₅SH

Measuring range0–10 mg/m3
Resolution0 mg/m3
Gas

Nitrogen Tetroxide · N₂O₄

Measuring range0–100 ppm
Resolution0 ppm

Communication and product capabilities

Included as standard

Confirmed product-wide interfaces and functions
  • USB-C
  • Data logging
  • Man-down alert

Options for technical review

Select requirements for technical confirmation
0 selectedSelections are added to your enquiry and require configuration confirmation.
  • BluetoothOptional

Certificates & documents

Preview of Environmental Labeling (Type II) Product Verification Certificate ZII26080321001
Certificate

Environmental Labeling (Type II) Product Verification Certificate ZII26080321001

ZII26080321001

View document
Preview of China Explosion-Proof Certificate of Conformity CCRI 24.2245X
Certificate

China Explosion-Proof Certificate of Conformity CCRI 24.2245X

CCRI 24.2245X

View document
Preview of China Compulsory Certification (CCC) 2025081801003543
Certificate

China Compulsory Certification (CCC) 2025081801003543

2025081801003543

View document

Downloads

datasheetBTYQ-MS104K-L English technical summary
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BTYQ-MS104K-L

Front view of the Eranntex portable pump-suction single gas detector model BTYQ-MS104K-L shown with its fully extended telescopic sampling probe for remote gas detection.

Select the required gases and measuring ranges, and review the listed communication options. Technical sales will confirm compatibility and the final configuration with you.

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Choose up to 1 gas for this product. for other requirements.

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