| Brand: | Bestone |
|---|---|
| Customized: | Customized |
| Portable: | Portable |
| Certification: | CE, RoHS |
| Gas: | Hcho |
| Type: | Electrochemistry |
| Samples: |
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| Customization: |
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Introduction
This product uses a pumping method to detect the concentration of formaldehyde gas. The independent gas chamber has a built-in electrochemical
principle gas sensor and precision temperature sensor. Small size, light weight, easy to carry, sensitive response, strong anti-interference ability, LCD digital display,
can quickly detect the environmental scene in short-term/single survey mode, and can also detect and record in continuous /sanitary inspection mode.
Record once about per 20 seconds, continuous recording more than 8 hours, and can display the maximum value, minimum value, STEL value, TWA value. Among them, the two measured values of STEL/TWA are necessary values for sanitary inspection and
environmental control. (Refer to VI. for explanation of STEL and TWA) The instrument uses a 16-bit MCU chip with a built-in 12-bit AD converter, with accurate environmental temperature detection and display,
and automatic temperature compensation function. Using expensive high-quality small-drift differential operational amplifiers
as hardware guarantees, while adopting software algorithms to improve anti-interference performance,
effectively deal with circuit zero drift and common mode interference in harsh electromagnetic environments.
Products are widely used in interior decoration, decorative materials, the production and management of chemical raw materials,
the formaldehyde content in cars, buses, high-speed rail driving cabins and compartments, municipal environmental monitoring and other industries, to detect the concentration of formaldehyde gas in the current environment at any time.
Specification
Measurement display: 4-digit LCD digital display with backlight
Operating temperature: 0~40ºC(32~104ºF)
Storage temperature: -10~50ºC(14~122ºF)
Operating humidity: 15~80%RH (relative humidity) (non-condensing)
Storage humidity: 15%~80% RH (relative humidity) (non-condensing)
Concentration unit: ppm (volume concentration), mg/m³ (mass concentration)
Measuring range: 0~4.00ppm (0~5.00mg/m³) (1ppm =1.25mg/m³ under one atmosphere)
Resolution: 0.01ppm (0.01 mg/m³)
Accuracy: ±10%×reading
Pump sampling time: 30 seconds
Sensor response time: <20 seconds
Calibration gas: customized standard gas
Over-range display: --OL--
Alarm mode: sound and light alarm (when the alarm value is exceeded, sound and red backlight will warn at the same time)
Sensor principle: electrochemistry
Sampling method: pump suction
Power supply: 4×3.7 lithium iron phosphate battery
Size: 235×74×40(mm)
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