Application Practices of WiFi Temperature & Humidity Transmitters and Air Quality Transmitters in Pharmaceutical and Precision Workshops

Pharmaceutical and precision manufacturing industries impose extremely stringent requirements on workshop environments. Temperature, humidity, and particulate concentration directly affect product quality and safety. According to GMP specifications, pharmaceutical workshop temperatures must be controlled between 18–26°C, relative humidity between 45–65%RH, and cleanroom particulate concentrations must comply with defined classification standards. As key tools, WiFi temperature and humidity transmitters and air quality transmitters provide efficient monitoring through wireless transmission and real-time data. Nexisense series products support these scenarios with stable performance, helping enterprises achieve intelligent environmental management. This article explores their technologies and applications.

Definition of WiFi Temperature & Humidity Transmitters and Air Quality Transmitters

A WiFi temperature and humidity transmitter is a device that integrates temperature and humidity sensing with wireless communication. It automatically collects data and uploads it via WiFi, supporting local display and alarms. An air quality transmitter focuses on particulate monitoring, such as PM2.5 and PM10 concentrations, using laser scattering principles to quantify dust particles per unit volume.

The combination of these two devices covers the core needs of pharmaceutical and precision workshops: the former ensures stable temperature and humidity, while the latter controls cleanliness. The Nexisense NS-TH-WiFi series integrates high-quality measurement units and is suitable for sterile environments.

Working Principle Analysis

WiFi temperature and humidity transmitters use Swiss-imported high-precision units: temperature measurement is based on thermistors, while humidity measurement relies on capacitance changes caused by water molecule adsorption. Data is processed at a 2-second acquisition rate, with adjustable upload intervals (1–10000 seconds).

Air quality transmitters use laser scattering technology: a light beam illuminates particles to generate scattered light, which is converted photoelectrically to calculate concentration. Dual-frequency acquisition ensures accurate differentiation between PM2.5 and PM10.

Wireless transmission supports both local area networks and wide area networks, with dynamic domain name resolution simplifying remote access.

Structural Feature Analysis

The structural design emphasizes cleanroom compatibility. Temperature and humidity transmitters feature large LCD screens and buttons for convenient on-site operation, with interference-resistant housings. Probes offer strong protection and include built-in audible and visual alarms.

Air quality transmitters integrate compact laser modules, operating within -20 to +60°C and 0–80%RH. Interfaces include RS485 and analog outputs (4–20mA / 0–5V / 0–10V), making system integration straightforward.

Nexisense devices provide storage capacity of up to 65,000 data groups and support multi-terminal access.

Main Advantages

High accuracy: temperature and humidity accuracy of ±0.1°C and ±2%RH; particulate resolution of 1 μg/m³ with a range of 0–1000 μg/m³.

Wireless convenience: no wiring required, cloud uploads supported, enabling both local and remote management.

Timely alarms: over-limit audible and visual alerts with remote notifications, ensuring reliable data storage.

Strong anti-interference capability: automatic calibration suitable for cleanroom environments.

These features reduce manual intervention and enhance regulatory compliance.

Application Scenarios in Pharmaceutical Workshops

Pharmaceutical workshops require sterile and dust-free environments. WiFi temperature and humidity transmitters monitor 18–26°C and 45–65%RH, triggering alarms when limits are exceeded to prevent drug degradation. Wireless uploads support multi-point deployment, allowing managers to remotely review trends.

Combined with air quality transmitters, particulate levels are monitored to prevent contamination during processes such as film coating or injection production. Cloud platforms analyze historical data to optimize ventilation systems.

Application Scenarios in Precision Mechanical Cleanrooms

Precision workshops have strict cleanliness classifications. Air quality transmitters continuously monitor PM2.5 and PM10, triggering purification systems when thresholds are exceeded. In semiconductor or optical manufacturing, particulate contamination directly affects yield.

Temperature and humidity transmitters provide auxiliary control to prevent static electricity or oxidation. Wireless designs facilitate installation in cleanrooms without cable interference.

Measurement Methods and System Integration

Measurement is continuous and automatic: temperature and humidity are sampled every 2 seconds with adjustable upload intervals; particulate matter is classified in real time using laser detection.

Cloud platform integration enables local web-based floor plan views and remote access via apps or WeChat. Functions include Excel export and multi-channel alarms (SMS/email).

Multi-level permission management ensures data security.

Maintenance and Care Guidelines

Maintenance is simple: periodically wipe probes and avoid chemical corrosion. Calibration is recommended once per year using standard reference sources.

For wireless models, check signal strength regularly and export data when storage is full. In cleanrooms, pay attention to anti-static installation.

Nexisense designs emphasize durability, reducing maintenance intervention.

Technical Parameter Details

WiFi temperature and humidity transmitter: temperature monitoring range 18–26°C, humidity 45–65%RH; 2-second acquisition, adjustable upload; storage capacity 65,000 groups; LCD display with buzzer.

Air quality transmitter: PM2.5 / PM10 range 0–1000 μg/m³, resolution 1 μg/m³; RS485 and analog outputs; operating conditions -20 to +60°C, 0–80%RH.

These parameters comply with GMP and cleanroom standards.

Cloud Platform Functional Expansion

The platform supports real-time and historical viewing, alarm push notifications, data sharing, and large-screen visualization. No self-built servers are required, enabling access anytime.

This supports a closed loop from monitoring to decision-making.

Frequently Asked Questions (FAQ)

What are the temperature and humidity standards for pharmaceutical workshops?
GMP generally requires 18–26°C and 45–65%RH, unless otherwise specified.

How does the air quality transmitter distinguish PM2.5 and PM10?
Through dual-frequency acquisition and algorithm-based particle classification.

Is wireless signal reliable in cleanrooms?
Yes, it supports both local and wide area networks with stable dynamic resolution.

How long can data be stored?
Up to 65,000 data groups, with customizable storage intervals.

What alarm methods are available?
Local audible and visual alarms plus remote SMS and email notifications.

WiFi temperature and humidity transmitters and air quality transmitters such as the Nexisense series play a critical role in pharmaceutical and precision workshops. Through wireless real-time monitoring and intelligent platforms, they ensure environmental compliance while improving product quality and efficiency. As the Internet of Things continues to evolve, these technologies will further optimize cleanroom management and promote sustainable industry development.