DB170 Alkali-Resistant Temperature & Humidity Probe for Precast Concrete Curing

IP67

Project Background

A large precast concrete manufacturer produces metro tunnel segments, bridge beams, and other structural components requiring strict curing control to achieve target strength and durability.

During concrete curing, temperature and humidity must be carefully maintained. The environment is highly alkaline (pH 11–12) due to cement hydration, creating challenges for conventional temperature and humidity sensors.

Challenges

The plant previously relied on standard sensors and manual inspections, which caused several problems:

Sensor housings corroded rapidly in alkaline environments.
Temperature and humidity measurements lacked sufficient accuracy.
Manual inspections every few hours could not provide real-time monitoring.
Delayed response to abnormal conditions sometimes resulted in product defects and costly rework.

These issues negatively impacted product quality, maintenance costs, and production efficiency.

Solution

To improve curing control, the plant deployed the DB170 Alkali-Resistant Temperature & Humidity Probe throughout its production lines and curing chambers.

Key Features

Excellent Alkali Resistance

PTFE housing design
Suitable for environments up to pH 12
Ideal for concrete curing applications

High Measurement Accuracy

Temperature accuracy: ±0.2°C
Humidity accuracy: ±2% RH
Measurement range: -40°C to 120°C

Compact Embedded Design

Diameter: 35 mm
Suitable for embedded concrete monitoring
Measures internal curing conditions directly

Easy System Integration

Low power consumption
I2C digital output
Compatible with PLC-based monitoring systems
Results

After implementation, the manufacturer achieved significant improvements:

✔ Defect rate reduced from 18% to 2%

✔ Concrete compressive strength improved from C52 to C55

✔ Sensor service life increased by more than 5 times

✔ Maintenance costs reduced by 70%

✔ Steam consumption reduced by 12%

✔ Improved automation and real-time process control

Conclusion

The DB170 successfully addresses the key challenges of precast concrete curing, including alkaline corrosion, measurement accuracy, and real-time monitoring.

With its PTFE alkali-resistant housing, high precision, and compact embedded design, the DB170 helps manufacturers improve product quality, reduce operating costs, and optimize curing efficiency, making it an ideal solution for modern precast concrete production.