Application Practice and Value Analysis of Nexisense Temperature and Humidity Transmitters Across Industries

1. Role of Temperature and Humidity Transmitters in Modern Environmental Management

Temperature and relative humidity are key environmental parameters affecting product quality, biosafety, and production efficiency. In industries such as healthcare, vaccine storage, livestock farming, and tobacco storage, environmental conditions impact not only economic performance but also compliance and safety.

Temperature and humidity transmitters have become foundational devices in this context. They continuously sense environmental temperature and humidity, transmitting analog or digital signals to higher-level systems in real time. This enables centralized monitoring, data retention, and abnormal condition alerts, making them indispensable for building modern environmental management systems.

2. Working Principle and Structural Basics of Temperature and Humidity Transmitters

1. Overview of Working Principle

Temperature and humidity transmitters typically consist of:

High-quality integrated temperature and humidity probe
Humidity-sensitive and temperature-sensitive elements
Digital signal processing circuitry
Standard signal output module

Temperature measurement commonly uses semiconductor temperature sensors or diode P–N junctions, while humidity measurement is based on capacitive humidity sensors or polymer film technology. Collected analog signals are processed internally and converted to standard industrial signal outputs.

2. Common Output and Communication Methods

Nexisense temperature and humidity transmitters provide multiple signal types for system integration:

4–20 mA current signal
0–10 VDC voltage signal
RS485 digital communication (Modbus RTU protocol)

These can be seamlessly integrated with PLCs, DCS, environmental monitoring systems, or IoT platforms.

3. Installation Forms

Depending on site conditions, common structural forms of temperature and humidity transmitters include:

Wall-mounted transmitters
Insertion-type transmitters
Split-type transmitters

Different structures have specific installation methods, response speeds, and application scenarios.

3. Application in Healthcare and Pharmaceutical Industries

1. Policy and Regulatory Background

China's Good Manufacturing Practices (GMP) and related pharmaceutical management regulations require continuous temperature and humidity monitoring in key production, storage, and inspection areas. Vaccine management regulations also emphasize long-term control and traceability of cold chain and environmental conditions. Temperature and humidity transmitters are core to data acquisition in these systems.

2. Typical Application Scenarios

Active pharmaceutical ingredient and formulation production workshops
Cleanrooms and buffer zones
Pharmaceutical and vaccine warehouses
Hospital pharmacies and reagent storage areas

Temperature and humidity transmitters upload real-time data to management systems, enabling:

Paperless recording
Automatic data storage
Over-limit alerts and early warnings
Audit and traceability support

This effectively addresses low efficiency, discontinuous data, and errors associated with manual recording.

3. Application Value Analysis

Ensures stable product quality
Meets regulatory and audit requirements
Reduces human operational risks
Enhances overall environmental management

4. Application in Pig Farm Environmental Control

1. Impact of Farm Environment on Swine Performance

In large-scale, intensive farming, temperature and humidity in pig houses directly affect:

Growth rate
Feed conversion ratio
Disease incidence
Slaughter cycle

Excessive fluctuations can cause stress responses, negatively affecting overall farm efficiency.

2. Key Principles of Using Transmitters in Pig Farms

Using the Nexisense CWS19 transmitter as an example, its advantages in pig farm applications include:

Stability
Long-term operation is fundamental. CWS19 offers excellent stability:
Humidity stability: ±1%RH FS/year
Temperature stability: ±0.2℃/year
Suitable for continuous monitoring.

Safety
IP65 protection
Dust and moisture resistance
Operating temperature: -40℃–85℃
Adapts to complex, humid, and dusty farm environments.

Convenience
Supports wall and DIN rail mounting
Easy wiring and maintenance
Reduces construction and operational costs

Practicality
LCD display allows on-site reading under low light.

Advanced Features
High-precision integrated temperature and humidity chip
Humidity sensor uses capacitive element
Temperature range switchable via DIP switch
Meets monitoring needs at different growth stages

Compatibility
Supports 4–20 mA, 0–10 VDC, RS485 outputs, facilitating linkage with ventilation, heating, and misting systems.

Cost-effectiveness
Stable performance and full functionality at a controllable cost, suitable for large-scale deployment.

5. Application in Tobacco Storage

1. Sensitivity of Tobacco to Temperature and Humidity

Tobacco is highly sensitive to environmental conditions; anomalies can cause:

Mold
Loss of aroma
Moisture imbalance
Decreased product quality

Continuous and accurate monitoring is therefore critical.

2. Application Method and Control Logic

Tobacco companies typically:

Install transmitters on walls or columns
Collect real-time environmental data
Integrate with dehumidifiers and ventilation systems
Automatically or manually adjust the environment when limits are exceeded

3. Installation Location Considerations

For accurate measurement:

Select relatively stable areas
Avoid direct sunlight
Keep away from doors, windows, air vents, heaters
Avoid strong electromagnetic interference from motors or frequency converters

6. General Recommendations for Selection and Deployment

Define measurement range and accuracy requirements
Choose appropriate protection level for the environment
Prioritize long-term stability and communication compatibility
Plan installation locations to avoid local interference

7. Frequently Asked Questions (FAQ)

Can temperature and humidity transmitters run continuously for long periods?
Yes. Industrial-grade transmitters are designed for 24/7 operation and suitable for long-term online monitoring.

Where is RS485 output suitable?
It is suitable for multi-point networking, long-distance transmission, and centralized management systems, commonly used in storage, livestock, and medical environment monitoring.

Is periodic calibration required?
In high-precision applications such as healthcare and pharmaceuticals, periodic calibration according to regulations is recommended.

Conclusion

From healthcare and pharmaceuticals to modern livestock farming and tobacco storage, temperature and humidity transmitters are essential for maintaining stable environments and improving management. Their value lies not only in data acquisition but also in supporting system compliance, controllability, and traceability.

Nexisense temperature and humidity transmitters, with stable measurement performance, flexible installation, and good system compatibility, can adapt to complex multi-industry applications, providing a solid foundation for reliable and efficient temperature and humidity monitoring systems.