TASI TA702A & TA702B Complete Buying Guide for Combustible Gas Leak Detection Malaysia

TASI TA702A & TA702B Complete Buying Guide for Combustible Gas Leak Detection Malaysia

Choosing a gas detector should start with the application, not the price.

Do you need to locate a combustible gas leak?

Do you need ppm or LEL indication?

Are you checking pipes, valves and regulators?

Or do workers actually require personal multi-gas atmospheric monitoring?

The TASI TA702A and TA702B are portable combustible gas detectors designed for applicable leak detection and troubleshooting.

This guide explains how to decide whether the TA702 Series matches your maintenance application and how to choose between TA702A and TA702B.

What Is the TASI TA702 Series?

The TASI TA702 Series is designed for combustible gas leak detection.

Typical applications can include inspection around:

Gas pipes

Pipe joints

Valves

Regulators

Fittings

Hoses

Equipment connections

Gas-connected machinery

The portable design makes the series suitable for maintenance technicians who need to move between different inspection points.

What Types of Applications Can TA702 Support?

Potential applications include:

Factory Maintenance

Facility Management

Commercial Kitchen Maintenance

Hotel Engineering

Food Processing Maintenance

Boiler and Burner Maintenance

Industrial Service Contractors

Building Maintenance

Gas Pipe Troubleshooting

Preventive Maintenance

Post-Repair Inspection

Always confirm suitability for the actual gas, environment and applicable requirements before use.

Why Use a Portable Combustible Gas Leak Detector?

Imagine a factory technician receives a report:

"There may be a gas leak around this machine."

The technician now needs to determine where to investigate.

Possible locations include:

Pipe Joint A

Valve B

Regulator C

Hose D

Equipment Connection E

A portable detector allows the technician to inspect individual points instead of treating the complete installation as one area.

Flexible Probe for Maintenance Inspection

One practical feature of the TASI TA702 Series is the flexible probe.

Industrial gas connections are not always easy to reach.

They may be located:

Behind equipment

Under machinery

Between pipes

Around valve assemblies

Near walls

Inside maintenance access areas

A flexible probe helps position the sensing area closer to individual inspection points.

What Is the Main Difference Between TA702A and TA702B?

The easiest way to understand the difference is by considering the technician's workflow.

TASI TA702A focuses on practical leak locating with adjustable sensitivity.

TASI TA702B provides additional ppm and LEL indication together with concentration trend information.

Both are intended for combustible gas leak detection, but they provide the technician with different ways of interpreting the response.

Why Choose TASI TA702A?

Consider TA702A when your main objective is practical leak locating.

The TA702A provides:

High Sensitivity

Medium Sensitivity

Low Sensitivity

This allows technicians to progressively narrow the search.

A useful concept is:

High - Search

Medium - Narrow

Low - Focus

For many maintenance applications, this straightforward approach can be highly practical.

Example of TA702A Leak Locating

Suppose a technician needs to inspect several connections around a gas supply system.

The detector responds in the general area.

The technician can start with higher sensitivity to identify where the response is coming from.

After narrowing the area, sensitivity can be reduced to focus more closely on individual:

Valves

Joints

Regulators

Fittings

Connections

This is why adjustable sensitivity is useful for leak locating.

Why Choose TASI TA702B?

Consider TA702B when you want additional displayed information during combustible gas troubleshooting.

The TA702B provides ppm and LEL indication together with concentration trend information.

This allows the technician to observe how detector response changes while moving between inspection points.

Example of TA702B Troubleshooting

Imagine four inspection points:

Pipe Joint A - Lower response

Valve B - Increasing response

Regulator C - Stronger response

Equipment Connection D - Lower response

The technician can investigate the area producing the stronger repeatable response.

The displayed information supports troubleshooting, but it should always be interpreted together with the gas, probe position and surrounding conditions.

What Does ppm Mean?

ppm means parts per million.

It is commonly used to express relatively small concentrations of a substance in air or another medium.

However, a ppm indication on a portable leak detector should not automatically be treated as laboratory gas analysis.

Always consider the detector's intended purpose and specifications.

What Does LEL Mean?

LEL means Lower Explosive Limit.

It relates to the lower concentration at which a combustible gas or vapour can form an ignitable mixture under specified conditions.

LEL information is important in combustible gas applications.

However, an LEL indication alone does not mean that a detector automatically fulfils every personal safety, confined-space or site-specific monitoring requirement.

Can TA702 Detect LPG?

LPG commonly contains combustible hydrocarbons such as propane and butane.

A combustible gas detector may be used for applicable LPG leak detection where the gas falls within the detector's specifications.

For LPG troubleshooting, technicians may inspect:

Cylinder connections

Regulators

Hoses

Valves

Pipe joints

Equipment connections

Always confirm the actual gas and detector suitability.

Can TA702 Detect Methane and Natural Gas?

Natural gas commonly consists mainly of methane.

TASI TA702 Series combustible gas detection can therefore be relevant to applicable methane and natural gas leak troubleshooting.

Typical inspection points may include:

Gas pipes

Pipe joints

Valves

Regulators

Fittings

Equipment connections

Where Can TA702 Be Used in a Factory?

Factories may use combustible gas for different processes.

Depending on the facility, relevant equipment may include:

Boilers

Burners

Heating systems

Ovens

Production equipment

Food processing equipment

Gas distribution systems

A portable detector can support troubleshooting and preventive maintenance around applicable gas connections.

Commercial Kitchen Applications

Restaurants, hotels, central kitchens and food service facilities may have multiple gas-connected appliances.

Potential inspection points include:

LPG regulators

Gas pipes

Flexible hoses

Valves

Cooking equipment connections

A portable detector can help maintenance teams investigate suspected leaks around individual components.

Hotel and Facility Management Applications

Hotel engineering and facility management teams may need to inspect gas-related systems after:

Equipment servicing

Regulator replacement

Hose replacement

Kitchen renovation

Equipment relocation

Reported gas problems

A portable detector can form part of the maintenance tool kit.

Boiler and Burner Maintenance

Boilers and burners may use combustible gas depending on the installation.

Maintenance technicians may need to inspect the associated gas supply system.

Potential inspection points include:

Pipes

Valves

Regulators

Fittings

Burner connections

However, remember that a combustible gas leak detector is not the same as a combustion analyzer.

Preventive Maintenance Applications

TA702 does not have to be used only after a leak complaint.

Where appropriate, relevant gas connections can be incorporated into preventive maintenance inspection.

A maintenance route might include:

Gas Supply

Regulator

Main Pipe

Branch Pipe

Valve

Equipment Connection

Recently Serviced Components

A structured route helps technicians inspect the system consistently.

Post-Maintenance Inspection

Gas-related connections may require attention after maintenance work.

Examples include:

Valve replacement

Regulator replacement

Hose replacement

Pipe repair

Equipment servicing

Equipment relocation

Production line modification

Inspect the relevant affected connections according to the applicable maintenance and safety procedure.

Why Does the Detector Respond More Strongly in One Area?

Several factors can influence detector response.

These may include:

Distance from the source

Probe position

Air movement

Gas concentration

Nearby combustible vapours

Sensitivity setting

Inspection technique

A stronger response can help guide troubleshooting, but the technician should look for a repeatable pattern.

Why Does the Reading Change When the Probe Moves?

Gas does not necessarily remain in one exact position.

Airflow can influence where gas travels.

Possible influences include:

Ventilation

Fans

Air conditioning

Open doors

Outdoor wind

Machinery airflow

Therefore, the strongest response may not always occur directly at the original leakage point.

Systematic inspection is important.

Why Does the Detector Alarm When No Leak Is Obvious?

A combustible gas detector may respond to different combustible gases or vapours within its sensing capability.

Industrial environments may contain other vapours from:

Fuels

Solvents

Cleaning activities

Production processes

Maintenance work

If an unexpected response occurs, investigate the surrounding environment instead of immediately assuming instrument failure.

TA702 vs Soap Bubble Test

Electronic gas detection and approved leak detection solution can serve different purposes.

A portable electronic detector is useful for searching and narrowing down a suspected leak.

An approved leak detection solution may be useful for checking certain accessible connections according to the applicable procedure.

These methods can complement each other.

Do not use improvised liquids where they are not appropriate for the equipment or procedure.

TA702 vs Multi-Gas Detector

This is an important distinction.

TA702A and TA702B are primarily combustible gas leak detection instruments.

A typical multi-gas safety requirement may involve:

O2

CO

H2S

Combustible Gas

If workers require personal atmospheric monitoring, an appropriately specified multi-gas detector may be required.

Do not choose TA702 simply because the application involves gas.

TA702 vs Fixed Gas Detection System

Portable detectors and fixed detectors also perform different jobs.

Portable Detector:

Carried by technician

Used at different inspection points

Useful for maintenance and troubleshooting

Fixed Gas Detection System:

Installed in a designated location

Designed for continuous monitoring

May form part of a facility safety system

Some facilities may require both types of equipment.

TA702 Is Not a Refrigerant Leak Detector

HVAC technicians should pay particular attention to this distinction.

A combustible gas leak detector should not automatically be selected for refrigerant leak detection.

If the requirement is to find a refrigerant leak in an air-conditioning or refrigeration system, select a detector designed for the specific refrigerant application.

Always tell the supplier exactly what gas needs to be detected.

TA702 Is Not a Combustion Analyzer

Combustible gas leak detection and combustion analysis are different applications.

A combustion analyzer may be used to evaluate parameters associated with combustion and flue gas.

TA702A and TA702B are intended for combustible gas leak detection.

Do not substitute one instrument category for another.

Common Mistakes When Buying a Gas Detector

Avoid these common purchasing mistakes:

Buying based only on price

Not identifying the gas

Not explaining the application

Confusing leak locating with personal safety monitoring

Assuming ppm and LEL are the same

Assuming every gas detector detects every gas

Ignoring site certification requirements

Buying a portable detector when continuous monitoring is required

The correct detector starts with the correct application information.

Questions to Ask Before Buying

Before selecting TA702A, TA702B or another detector, answer these questions:

What gas do I need to detect?

What equipment am I checking?

Is the requirement leak locating?

Is personal atmospheric monitoring required?

Do I need ppm indication?

Do I need LEL indication?

Do I need adjustable sensitivity?

Do I need a flexible probe?

Is continuous monitoring required?

Are there specific certification or site requirements?

These questions can prevent incorrect product selection.

TASI TA702A or TA702B - Simple Selection Guide

Choose TASI TA702A when you mainly need:

Combustible gas leak locating

High, Medium and Low sensitivity adjustment

Straightforward maintenance troubleshooting

Choose TASI TA702B when you need:

Combustible gas leak locating

ppm indication

LEL indication

Concentration trend information

Additional displayed information

Consider another detector category when you require:

Personal multi-gas monitoring

O2 monitoring

CO monitoring

H2S monitoring

Specific confined-space monitoring

Continuous fixed monitoring

Refrigerant leak detection

Combustion analysis

Who Should Consider TASI TA702?

Potential users include:

Factory maintenance departments

Preventive maintenance teams

Facility management companies

Hotel engineering departments

Restaurant maintenance teams

Commercial kitchen contractors

Food processing plants

Boiler and burner contractors

Industrial service companies

Building maintenance contractors

Suitability should always be confirmed against the actual gas and application.

A Practical Maintenance Workflow

For appropriate combustible gas leak troubleshooting, a structured workflow may include:

Identify Gas

Understand Equipment

Inspect Gas Path

Detect

Narrow the Search

Locate the Suspected Point

Follow Repair Procedure

Verify

Document

Return Equipment to Service

This is more effective than randomly moving the detector around the equipment.

Looking for TASI TA702A or TA702B in Malaysia?

MTM Precision supplies portable test and measurement instruments for industrial maintenance, factory troubleshooting, facility management and preventive maintenance applications.

If you are unsure whether to choose TA702A, TA702B or another gas detector category, send us:

Gas type

Application

Equipment

Working environment

Required gases

Leak locating or personal monitoring

ppm or LEL requirement

Certification requirement

Quantity

We can help narrow down the appropriate instrument according to your application.

MTM Precision Sdn Bhd

Showroom & Service Centre

No 29-1 & 2, Jalan Bandar 18, Pusat Bandar Puchong, 47160 Puchong, Selangor.

Tel: 03-8080 7172

WhatsApp: +6016-660 7346

Email: mtmpre@yahoo.com

Website: www.mtmpre.com.my

Serving customers throughout Malaysia including Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kelantan, Terengganu, Kedah, Perlis, Sabah and Sarawak.