How many gases can BTYQ-MS104K-M monitor?

BTYQ-MS104K-M supports simultaneous monitoring of one to four gases in standard configurations. An expanded configuration can support up to six, provided the requested gases, measuring ranges and sensor combination are confirmed.

How does MS104K-M sample gas?

The detector uses diffusion sampling. A standard external pump supports pumped sampling when the task requires it. Specify the sampling point and conditions when requesting the configuration.

Portable Gas Detectors

MS104K-M Portable Multigas Detector

BTYQ-MS104K-M

Certificates & documents

View all (5)

CertificateZII26080321001

CertificateCCRI 24.2941X

CertificateCCRI 24.2940X

CertificateCCRI 24.2245X

Certificate2025081801003540

Product overview

A portable gas detector with standard configurations for one to four gases and both diffusion and pumped sampling. An external pump is supplied as standard.

Configurable monitoring for one to four gases

BTYQ-MS104K-M monitors one to four gases simultaneously in standard configurations; expanded configurations can support up to six, subject to confirmation of the gas and range combination. Diffusion sampling is used for routine monitoring. The supplied external pump can be attached for pumped sampling.

The 2-inch display, Type-C charging and data communication, and storage for at least 200,000 records support field review. Wireless communication and additional safety functions depend on the selected configuration.

Sampling method: Diffusion
Ingress protection: IP66
Operating temperature: -20 °C to 55 °C — Typical operating range.

Request a Quote View specifications

Technical specifications

Confirmed technical specifications
Ingress protection	IP66
Dimensions	90 × 70 × 38 mm (L × W × H)
Weight	Approx. 200 g — Diffusion operation; approximately 300 g with the supplied external pump.
Battery voltage	7.4 V
Battery capacity	1,400 mAh
Battery runtime	> 100 h — Diffusion operation without catalytic, infrared or PID sensors.
Operating temperature	-20 °C to 55 °C — Typical operating range.
Display size	2 in
Data storage	> 200,000 records
Alarm volume	> 95 dB — Documented alarm volume exceeds 95 dB at 30 cm and 90 dB at 1 m.
Sampling method	Diffusion

Standard gas configuration: 1–4 gases
Expanded gas configuration: Up to 6 gases
Sampling modes: Diffusion or pump sampling; external pump supplied as standard
Typical measurement accuracy: ≤ ±3% FS; higher-accuracy sensors available
Response time: T90 ≤ 20 s
Recovery time: ≤ 30 s
Operating humidity: 10–95% RH; −40°C to +70°C available as an optional temperature range
Explosion protection: Ex ia IIC T4 Ga
Wireless options: Bluetooth optional
Enclosure option: IP68 available as a custom configuration

Supported gas configurations

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

Gas

Combustible Gas · EX

Measuring range0–100 %LEL

Resolution0 %LEL

Add Combustible Gas · EX 0–100 %LEL to request

Measuring range0–100 %Vol

Resolution0 %Vol

Add Combustible Gas · EX 0–100 %Vol to request

Measuring range0–1,000 ppm

Resolution1 ppm

Add Combustible Gas · EX 0–1,000 ppm to request

Gas

Oxygen · O₂

Measuring range0–30 %Vol

Resolution0 %Vol

Add Oxygen · O₂ 0–30 %Vol to request

Measuring range0–100 %Vol

Resolution0 %Vol

Add Oxygen · O₂ 0–100 %Vol to request

Gas

Carbon Monoxide · CO

Measuring range0–100 ppm

Resolution0 ppm

Add Carbon Monoxide · CO 0–100 ppm to request

Measuring range0–1,000 ppm

Resolution0 ppm

Add Carbon Monoxide · CO 0–1,000 ppm to request

Measuring range0–2,000 ppm

Resolution1 ppm

Add Carbon Monoxide · CO 0–2,000 ppm to request

Measuring range0–5,000 ppm

Resolution1 ppm

Add Carbon Monoxide · CO 0–5,000 ppm to request

Measuring range0–10,000 ppm

Resolution1 ppm

Add Carbon Monoxide · CO 0–10,000 ppm to request

Gas

Hydrogen Sulfide · H₂S

Measuring range0–10 ppm

Resolution0 ppm

Add Hydrogen Sulfide · H₂S 0–10 ppm to request

Measuring range0–100 ppm

Resolution0 ppm

Add Hydrogen Sulfide · H₂S 0–100 ppm to request

Measuring range0–500 ppm

Resolution0 ppm

Add Hydrogen Sulfide · H₂S 0–500 ppm to request

Measuring range0–2,000 ppm

Resolution1 ppm

Add Hydrogen Sulfide · H₂S 0–2,000 ppm to request

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

BluetoothOptional
Add to request

Certificates & documents

Certificate

Environmental Labeling (Type II) Product Verification Certificate ZII26080321001

ZII26080321001

Status: active · valid to Sep 16, 2027

Type II environmental labeling verification covering the exact product models listed in the certificate attachment.

Issuer: 广东中天认证中心有限公司
applicant: 深圳市逸云天电子有限公司
manufacturer: 深圳市逸云天电子有限公司

Scope: Model BTYQ-MS104K-M is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-MS104K-L is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-MS104K-S1 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-MS104K-S2 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-MS400-S is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-MS600-S is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-MS600-S1 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-MS600-S2 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-PTM600-S is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model BTYQ-PTM600-S2 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model GTYQ-MIC-500S is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model GTYQ-MIC-600 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model MIC-1000 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: The certificate lists MIC-3000; the CMS model code MIC3000 is linked through its governed MIC-3000 source identity. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model MIC-200-UVIR2 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model MIC-200-IR3 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model MIC-200-UVIR3 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model MIC-200-IR4 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

Scope: Model MIC-200-UVIR4 is listed on the certificate attachment. Scope is limited to the Type II environmental labeling claim verified under GB/T 24021-2024 / ISO 14021:2016 and ZTIIPJ01-01-2026.

View document

Certificate

China Explosion-Proof Certificate of Conformity CCRI 24.2941X

CCRI 24.2941X

View document

Certificate

China Explosion-Proof Certificate of Conformity CCRI 24.2940X

CCRI 24.2940X

View document

Certificate

China Explosion-Proof Certificate of Conformity CCRI 24.2245X

CCRI 24.2245X

View document

Certificate

China Compulsory Certification (CCC) 2025081801003540

2025081801003540

View document

Downloads

datasheetBTYQ-MS104K-M English technical summary

Open PDF

Product questions

Compare adjacent models

Certificates & documents (3)

BTYQ-MS104K-L

MS104K-L Portable Single-Gas Detector

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

Gas configuration: Standard: 1 gas; Expansion: No higher gas-count expansion documented
Sampling: Pump
Ingress: IP66
Data storage: 100,000 records

Certificates & documents (9)

BTYQ-MS600-S1

MS600-S1 Smart Portable Multigas Detector

A pumped portable instrument for configurable multigas and environmental monitoring with a 4-inch touchscreen.

Gas configuration: Standard: 1–6 gases; Expansion: No higher gas-count expansion documented
Sampling: Pump
Ingress: IP66
Data storage: > 10,000,000 records

Certificates & documents (11)

BTYQ-MS600-S2

MS600-S2 Smart Portable Multigas Detector

A portable pumped multigas detector with standard one- to ten-gas configurations, a 4-inch display, IP66 protection and runtime over 14 hours.

Gas configuration: Standard: 1–10 gases; Expansion: No higher gas-count expansion documented
Sampling: Pump
Ingress: IP66
Data storage: > 10,000,000 records

Discuss your requirements

Selected product

BTYQ-MS104K-M

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

Request product information

Tell us about your requirement

Inquiry type

Name

Company

Business email

Country / market

Gas / range requirements

Hydrogen Sulfide · 0–10 ppm

Hydrogen Sulfide · 0–100 ppm

Hydrogen Sulfide · 0–500 ppm

Hydrogen Sulfide · 0–2,000 ppm

Carbon Monoxide · 0–100 ppm

Carbon Monoxide · 0–1,000 ppm

Carbon Monoxide · 0–2,000 ppm

Carbon Monoxide · 0–5,000 ppm

Carbon Monoxide · 0–10,000 ppm

Oxygen · 0–30 %Vol

Oxygen · 0–100 %Vol

Combustible Gas · 0–100 %LEL

Choose up to 6 gases for this product. for other requirements.

Communication and positioning options

USB-C · Standard

Bluetooth · Optional

Other gas requirements

Other range requirements

Estimated quantity

Project details

Eranntex will use the information you provide to respond to your inquiry. Read our Privacy Policy and Website Terms of Use. Sending an inquiry does not authorize optional advertising.