Extech Model 45158 Pocket Thermo-Hygrometer is an accurate multi-purpose measuring instrument designed for the simultaneous measurement of critical environmental parameters including temperature, relative humidity, and air velocity.
With an internal K-type thermocouple probe and advanced humidity sensors, this device is essential for HVAC engineers, maintenance technicians, and building inspectors.
The capability to measure air velocity over a wide range with high accuracy allows users to effectively evaluate the performance of ventilation systems.
The ergonomic design and compact size of this device make it easy to carry and use in different industrial and office environments. The large rotating LCD display enables data reading from any angle.
This model provides accurate and stable data, helping users quickly detect and resolve issues related to air flow, improper humidity, and non-standard temperatures.
Key Features of Extech Model 45158 Pocket Thermo-Hygrometer
- Simultaneous measurement of temperature, relative humidity, and air velocity
- Internal Type K thermocouple probe for temperature measurement
- Air velocity measurement range from 100 to 5500 feet per minute
- Large LCD display with rotation capability for better readability
- Pocket-sized and lightweight for easy portability
- Data hold feature to retain the last value
Technical Specifications
| Feature | Value |
| Brand | Extech |
| Model | 45158 |
| Temperature Range | 0 to 122 degrees Fahrenheit (-18 to 50 degrees Celsius) |
| Relative Humidity Range | 10% to 95% RH |
| Air Velocity Range | 100 to 5500 feet per minute (FPM) |
| Temperature Sensor Type | K-type thermocouple |
| Display | Rotating LCD |
| Additional Features | Hold function, auto shut-off |
Frequently Asked Questions
Is the Extech Model 45158 Thermo-Hygrometer suitable for measuring surface temperatures as well?
Yes, this device is equipped with an internal K-type thermocouple probe that accurately allows for surface and ambient temperature measurements.
Is there a unit conversion feature for temperature and air velocity?
This model is primarily designed for readings in Fahrenheit and feet per minute, but its measurement accuracy is sufficient for standard HVAC applications.
Does this device require periodic calibration?
Yes, like all precise measuring instruments, it is recommended to calibrate this device periodically to maintain the accuracy of humidity and temperature measurements.
Conclusion
The Extech Model 45158 Pocket Thermo-Hygrometer is a smart choice for professionals who need a small, accurate, and multi-functional tool.
With the ability to measure three key environmental parameters simultaneously, this device facilitates the optimization of ventilation systems and ensures indoor air quality. Its high build quality and user-friendly design make it an essential tool in the toolbox of any professional technician.
