HT-M4 Single Gas Detector

HT-M4 formaldehyde detector

1. What is a gas detector?

The so-called gas detector is an instrument that can detect the concentration of gases in the air. When the detected gas concentration is lower or higher than the preset alarm value, it will generate sound and light vibration alarm to prompt the user. It is a safety instrument for industry safety management and detection, maintenance and construction personnel.

2. Choosing the appropriate gas detector for different locations and testing needs is crucial for purchasing gas detectors. Below, we will provide a brief introduction on how to choose the right gas detector for your reference and selection.

(1) Confirm the type and range of gases detected on site, such as

detect gasmeasurement range

flammable gas0-100 %LEL

oxygen0-30%VOL

carbon monoxide0-1000ppm

hydrogen sulfide0-100ppm

(2) Confirm the detection method of the detector

portableAs the name suggests, it is easy to carry and can detect gas concentration anytime and anywhere. It has a small volume with digital display, sound and light alarm functions, and can be directly tested when turned on.

fixed typeFixed at a certain leakage point, it can be continuously monitored in real-time for 24 hours, and the corresponding system can be uploaded through signal output.

If you need a portable gas detector, please continue reading Article (3) and Article (4); If you need a fixed gas detector, please read the content of (5) directly.

(3) Confirm the quantity of gas detected by the portable gas detector

ClassificationdefinitionRecommended Model

1 type of gasAn instrument can only detect one type of gas and is generally used for on-site detection of relatively single gases.HT-M1

multiple gasesAlso known as a multi gas detector, one instrument can simultaneously detect multiple gasesHT-M4

(4) Determine the sampling method of the instrument

ClassificationdefinitionRecommended Model

diffusionThe instrument itself does not come with a pump and offers a wide range of gas options, making it suitable for open and well ventilated environmentsHT-M1/HT-M4

pump-suction typeThe instrument is equipped with an internal or external sampling pump, which can perform air extraction detection with fast response time, short detection time, and more accurate detection data. It is suitable for places with poor air circulation in closed environmentsHT-M1(B)/HT-M4(B)/HT-BH

(5) Fixed gas detectors are all single gas detectors. For fixed detectors, the configuration needs to be confirmed as follows:

definitionRecommended Model

without digital displayThe probe does not have a digital display functionHT-M5

with digital displayProbe with digital display functionHT-M5(s)

Equipped with sound and light alarm lightsThe alarm light is installed on the detector, and when the value is lower or higher than the set value, it can emit an audible and visual alarm function.

Equipped with alarm controllerCan connect multiple channel detection probes and centrally control multiple points. When the gas concentration reaches or exceeds the preset alarm value, the controller immediately emits an audible and visual alarm to remind early safety measures to be takenHT-B4

1、 Product Introduction and Application:

The HT-M4 formaldehyde detector has a very clear large LCD screen, sound and light alarm prompts, and does not require formaldehyde reagents or consumables. It can detect quickly and accurately. It breaks the technical bottleneck of traditional formaldehyde detectors, which are cumbersome to use, expensive, and can only detect once. It uses imported electrochemical sensors and high-precision operational amplification chips to continuously convert formaldehyde concentration signals in the air into electrical signals in real time. After data processing by a microcomputer, the measurement results are displayed in LCD digital format. Ensure that hazardous gases can be detected even in extremely unfavorable working environments and prompt operators to take preventive measures in a timely manner.

Mainly used for indoor formaldehyde detection in civil buildings, formaldehyde content detection in building materials, and indoor formaldehyde detection in public places with formaldehyde volatilization environmental quality testing.

2、 Instrument features:

-Compact, lightweight, and sturdy

-No need for formaldehyde reagent consumables

-Sound and light alarm - fast and accurate detection

-Large screen display of numbers, characters, instantaneous values, peak values, and average values

-Self check the display, battery, sensors, and sound and light alarm functions when turned on or needed

-Safety reminder: Regular flashing lights and sound prompts

-Outstanding audio sound alarm

-The maintenance cost is very low

-Can support 1, 2, 3, or 4 types of gas detection (optional)

3、 Technical parameters

Gas detection: formaldehyde (CH2O) in the air

Range: 0-19.99ppm

Basic error: ＜ ± 1.5% (F.S)

Minimum reading: 0.01ppm

Response time: ≤ 50 seconds

Sensor lifespan: 36 months

Battery: 3.6V lithium-ion rechargeable battery

Battery working time: Approximately 200 hours of continuous operation

Display: Large screen LCD display

Alarm: sound and light alarm

Direct reading: instantaneous value, peak value, battery voltage TWA、STEL

Explosion proof mark: Ex ibdIICT3

Protection level: IP45

Working temperature: -10 ∽ 45 ℃

Working humidity: 5-90% RH

Dimensions: 126mm (length) x 66mm (width) x 33mm (thickness)

Weight: 220g (with charger)

Haitel Company provides technical support and after-sales service for this instrument! Recruiting agents at all levels!