Where is the best place to install a formaldehyde sensor?

The transmitter should be installed in a location free from impact, vibration, and strong electromagnetic interference, and easily accessible for maintenance. The clearance between the transmitter installation location and surrounding process piping or equipment should be greater than 0.5m. It is recommended to install it 0.5m to 1.0m below the release source.

4-20mA Formaldehyde Hcho Transmitter Wall-Mount 0-5ppm Analog Output Electrochemical Gas Concentration Detector

Name: 4-20mA Formaldehyde Hcho Transmitter Wall-Mount 0-5ppm Analog Output Electrochemical Gas Concentration Detector
Brand: Shandong Renke Control Technology Co., Ltd.
SKU: 2191722402

Shandong, ChinaShandong Renke Control Technology Co., Ltd.

US$56.00-88.00

1 Piece

Product profile

Customization

Available

Type

Electrochemical Gas Sensor

Output Signal Type

4-20mA/0-5V/0-10V/RS485

Model NO.

RS-CH2O-*-2-5P-T

Production Process

Integration

Sensitivity

High

Certification

Customized

Power Supply

10~30V DC

Resolution

0.01ppm

Precision

±5%Fs(@1ppm,25℃,50%Rh)

Range

0-5ppm

Transport Package

Box

Trademark

Renke

Origin

Shandong, China

Production Capacity

1000 Pieces/Month

Key features

Output resolution reaches 0.01ppm, capturing fine formaldehyde concentration changes critical for indoor air quality compliance and early contamination warning in sensitive environments.

Measurement repeatability stays within 2% of signal value, ensuring readings remain consistent across repeated tests without requiring frequent recalibration during continuous monitoring.

Default 0 to 5ppm range suits most indoor and industrial air quality scenarios, with custom range configurations available to match specific application requirements.

Electrochemical sensing supports online formaldehyde tracking, suitable for smart homes, air purifiers, HVAC systems, and industrial facilities requiring constant air quality oversight.

Add-on OLED screen allows direct on-site value readout without external devices, remaining clearly legible even in low-light or nighttime working conditions.

Internal temperature and humidity add-on enables joint 3-parameter detection of formaldehyde, temperature, and humidity within a single wall-mounted housing without extra sensors.

Wide-voltage DC input adapts to diverse on-site power supplies while drawing only 0.12W, supporting low-power continuous operation in battery or solar setups.

Full output flexibility covers PLCs, data loggers, SCADA systems, and custom embedded platforms without requiring additional signal converters or interface modules.

Protective wall-mounted housing withstands demanding industrial and outdoor environments, supporting reliable long-term deployment in petrochemical, chemical, and coating facility settings.

Connects to Renke's free cloud platform, enabling centralized monitoring and management of multiple formaldehyde sensors deployed across different locations from a single dashboard.

Company profile

OEM ServicesProduct CertificationPatents AwardedR&D Capabilities

Shandong Renke Control Technology Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤6.04h

AI-Powered supplier vetting

SummarySHANDONG RENKE CONTROL TECHNOLOGY CO., LTD. is identified as a Jinan-based trading company operating in manufacturing-related industries, including integrated circuits and environmental monitoring instruments. The supplier reports ISO9001:2015, RoHS, CE, and FCC certifications. It provides extensive customization and ODM services, has introduced new products within the past year, and reports OEM service for well-known brands. Production-related information includes sensor productivity of 400,000 pieces and five quality inspectors, although finished-product inspection has instructions but no written records. The supplier lacks inventory, overseas warehouses, overseas agents or branches, and a valid manufacturing-capacity contract with affiliated subcontractors. Financial records are referenced for 2022–2024, but no monetary figures or detailed financial indicators are provided. Customer evidence is limited to one associated buyer name and does not establish the scope or quality of completed projects.

CertificationsThe supplier reports an ISO9001:2015 certificate and product certifications including RoHS, CE, and FCC. These certifications explicitly support quality-management and product-compliance capability.

After-Sales capabilityThe supplier reports no inventory capability, no overseas warehouse, no overseas showroom, and no overseas agents or branches. It also reports serving zero countries overseas, so the provided evidence does not demonstrate strong after-sales coverage, particularly internationally.

R&D capabilityThe supplier reports new products within the past year, provides ODM services, and offers customization from samples, designs, and full specifications. However, it reports no available SDK, so innovation capability is supported in product development and design services but not across all technical-development resources.

Production capacityThe supplier reports sensor productivity of 400,000 pieces, five quality inspectors, and production equipment including an MST mounter and auto-soldering and soldering capabilities. Nevertheless, it has no valid manufacturing-capacity contract with affiliated subcontractors, and its inspection and supplier-assessment procedures lack written records, limiting assurance of production control.

Customization capabilityBoth reported design-service fields list customization from samples, designs, full customization, minor customization, and flexible customization. The supplier also reports ODM capability, providing explicit evidence of broad customization support.

Product Q&A

Q:Where to use formaldehyde sensor?

Formaldehyde sensors are mainly used in industries or equipment that require long-term online monitoring of formaldehyde concentration, such as smart homes, air cleaners, and air conditioners. In addition, the formaldehyde sensor is suitable for places where further determination of formaldehyde gas is required, such as the petrochemical industry, organic chemical storage places, chemical laboratories, paint and coating industries, etc.

Q:Is the calibration of the HCHO sensor stable?

From the long-term data point of view, the professionally calibrated formaldehyde sensor can guarantee the stability of 3-5 years.

Q:Does temperature affect formaldehyde sensor readings?

Yes. Semiconductor-type sensors are highly sensitive to temperature and humidity, with readings changing significantly with these conditions, sometimes even exhibiting false exceedances. Electrochemical-type sensors are relatively stable, but are also susceptible to temperature and humidity interference. High-end formaldehyde transmitters use independent temperature and humidity sensors for dynamic compensation to eliminate these effects.

Q:Is a 0-1 ppm formaldehyde sensor better than a 0-10 ppm sensor?

No. Measurement range alone cannot directly determine quality; the key factors are resolution, accuracy, and the application scenario. 0-1ppm and 0-10ppm simply represent different measurement ranges. The former is suitable for accurate monitoring of low concentrations, while the latter is suitable for environments with higher concentrations. Which is "better" depends on your needs.

Q:What is the repeatability of the formaldehyde sensor?

Within the range that we can currently test, the repeatability is currently less than 2% of the signal.