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Henan Otywell Electronic Technology Co., Ltd.

TCB1-FJ Valve Well Gas Detection Alarm Instrument

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TCB1-FJ Valve Well Gas Detection Alarm Instrument

TCB1-FJ Valve Well Gas Detection Alarm Instrument

Track gas conditions in buried utility wells between site visits, with battery-powered sensing and scheduled or alarm-triggered reports.

  • See changes without opening every well

    Periodic gas readings and wireless reports help teams prioritize checks across dispersed valve wells and underground utility chambers.

  • Respond to the right location

    Alarm-triggered messages can report gas concentration, battery status and event type, giving operators a clearer starting point for follow-up.

  • Plan a practical installation

    Diffusion sampling, low-power operation and remote settings support long service intervals; confirm the gas target, network coverage and reporting schedule for each site.

Diffusion sampling · Battery-powered · Cellular reporting by configuration and network coverage

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Overview

Description
TCB1-FJ valve well gas detector is an advanced instrument produced by our company with wireless upload function, used to detect gas concentration in urban underground confined spaces. It adopts high-performance gas sensor and microcomputer technology, combined with low-power technology design, with the advantages of power saving, intuitive display, good repeatability, long service life, easy installation, simple maintenance, and convenient operation.

TCB1-FJ valve well gas detector is battery-powered, and can upload gas concentration information, battery power, abnormal type and other information to the data center through the local cellular communication network in a timed or event (alarm) manner through the wireless network. Combined with the system software, it can realize the statistics, query, backup and other maintenance operations of gas concentration information at each monitoring point on site.

This detector is suitable for uninterrupted monitoring and early warning of gas concentration in urban underground confined spaces such as gas valve wells, water supply and drainage wells, power wells, and communication wells.

Key Features

Gas Monitoring

  • Diffusion sampling with configurable periodic data acquisition.
  • Combustible-gas sensing with a catalytic-bead or laser sensor; ask about other target gases before ordering.
  • LCD displays the local reading and operating status.

Reporting & Remote Settings

  • Scheduled reports and alarm-triggered reports send site data to a connected monitoring system.
  • Wireless upload and remote parameter configuration depend on the selected communication module and network coverage; confirm NB-IoT or cellular options for the project.

Events & Site Protection

  • Gas alarm, water-ingress and tamper/theft event options support targeted follow-up; confirm the enabled event sensors and reporting rules.
  • Reported data can include gas concentration, battery level and event type.

Power & Installation

  • Battery-powered, low-power design for underground valve and utility wells.
  • The current specifications list at least 18 months of battery life under standard operating conditions and an IP67 protection rating; actual service life depends on reporting and site conditions.
  • Confirm the hazardous-area approval and installation requirements against the certificate for the supplied variant.

Technical Specifications

Parameter / Specification Details
Power Supply Battery-powered
Operating Mode Periodic data acquisition (Configurable parameters)
Sampling Method Diffusion
Sensor Type Catalytic bead / Laser sensor (Combustible gases); customizable upon request for other target gases
Measurement Range & Accuracy  CH₄: 0–100% LEL (Accuracy: ±5% FS)
Temperature: -40°C to 85°C
Display LCD display
Operating Environment  Temperature: -30°C to 70°C
Humidity: ≤95% RH (Non-condensing)
Atmospheric Pressure 86 kPa to 106 kPa
Battery Life ≥ 18 months (under standard operating conditions)
Dimensions 190 × 210 × 70 mm
Weight Approx. 2.6 kg
Ex Certificate No. CCRI 25.2630X
Ex Marking (Explosion-proof Marking) Ex ia IC T4 Ga / Ex ia IIIC T200  130℃ Da
Ex Certificate No. CCRI 25.2630X
 Ingress Protection (IP Rating) IP67

Available Gases & Detection Ranges

The gases and ranges below are configuration options. OT135S Portable Gas Detection Alarm; confirm the final sensor combination and ranges with our team.

Common Gas Parameter listing
Gas detected Measuring Range Optional Range Resolution Rat Response Time
LEL -combustible gas 0-100%LEL 0-100%VOL (Infrared or catalytic ) 1%LEL/1%vol ≤10s
carbon monoxide 0-1000PPm 0-500/2000/5000PPm 0.1/1PPm ≤10s
TVOC 0-100PPM 0-100PPM 0.1PPm/1PPM ≤15s
hydrogen 0-100%LEL 0-1000PPM 1%LEL/1PPM ≤15s
natural gas 0-100%LEL 0-100%LEL 1%LEL ≤10s
Oxygen-O2 0-30%VOL 0-30%、0-100%VOL 0.1%vol ≤10s
ozone 0-10PPm 0-20、100PPm 0.01PPm/0.1PPM ≤15s
hydrogen sulfide-H2S 0-100PPm 0-50、200、1000PPm 1/0.1PPm ≤10s
Methane-CH4 0-100%LEL 0-100%VOL 1%LEL/1%vol ≤10s
fluorine 0-10PM 0-1、10PPM 1/0.1PPm ≤15s
hydrogen chloride 0-20PPm 0-20/50PPm/100PPM 0.01/0.1PPm ≤15s
Nitrogen-N2 0-30%VOL 0-30%VOL、100%VOL 0.1%LEL/1PPM ≤10s
hydrogen 0-100%LEL 0-1000PPm 1%LEL/0.1PPm ≤15s
chlorine 0-20PPm 0-10、100PPm 0.1PPm ≤15s
ammonia gas 0-100PPm 0-50、500、1000PPm 1/0.1PPm ≤15s
oxynitride 0-20PPm 0-50、1000PPm 0.1/1PPm ≤15s
methanal 0-20PPm 0-50、100PPm 1/0.1PPm ≤15s
sulfur dioxide 0-20PPm 0-50、1000PPm 0.1/1PPm ≤15s
nitric oxide 0-250PPm 0-500、1000PPm 1PPm ≤15s
nitrogen oxide 0-20PPm 0-50、1000PPm 0.1/1PPm ≤15s
phosphine 0-20PPm 0-20、100PPm 0.1PPm ≤15s
acrylonitrile 0-100PPM 0-100PPm 0.1/1PPm ≤15s
carbon dioxide 0-5000PPm 0-1%/5%/10%VOL(Infrared ) 1PPM/0.01%VOL ≤15s
hydrogen fluoride 0-10PPm 0-1、10、50、100PPM 0.01/0.1PPm ≤15s
Xylene/methylbenzene 0-20PPm 0-5、10、50、100PPm 0.01/0.1PPm ≤15s
oxirane 0-100PPm 0-100PPm 1/0.1PPm ≤15s
For other gases and measuring ranges, please contact us directly!
Note: Not all gases and range are listed, if you need more information, please contact us.

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