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E-mail
15101169516@163.com
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Phone
15101169516,13260419808
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Address
Room 022, 1st Floor, Building 2, No. 4 Huoxing Second Street, Tongzhou District, Beijing
Beijing Zhongheng Rixin Technology Co., Ltd
15101169516@163.com
15101169516,13260419808
Room 022, 1st Floor, Building 2, No. 4 Huoxing Second Street, Tongzhou District, Beijing
Testo 440 portable temperature and humidity recorder (Detu, Germany)Product Introduction

Function Overview
The humidity/temperature probe readings are transmitted to the measuring instrument via Bluetooth, with a maximum distance of 20 meters.
By pressing the button on the humidity/temperature probe, individual readings can be directly stored in the measuring instrument. A menu with clear structure for online measurement can make the operation of the measuring instrument more intuitive. By easily inputting the measurement time and period, it is possible to reliably record reading trends that allow you to evaluate changes in the data.
The humidity/temperature probe is equipped with capacitive humidity sensors that comply with international humidity standards such as ILAC, PTB, and NIST.
Wireless and space saving, more applications, fewer devices
Multi functional, universal handle can connect all probes, allowing you to control more applications with fewer devices and save space. The Bluetooth controller makes it easier for you to measure and eliminates the need to tidy up messy cables.
If the Bluetooth signal does not allow the use, a wired handle can be selected to connect the Detu probe. If the sensor needs to be replaced in the future, the probe can be directly purchased and replaced.
Intelligent calibration concept
By using a digital impeller wind speed probe, you will obtain particularly accurate measurement results as the measuring instrument can eliminate measurement uncertainty. You only need to send the probe back for calibration, and the measuring instrument can continue to be used.
Application field
Storage and refrigeration room: Due to its large measurement range of 0~100% RH and -20~+70 ° C, the relative humidity and air temperature of the storage and refrigeration room can be reliably measured.
Workplace: If the air is too dry or too humid, it will affect our health and comfort. Use humidity/temperature probes to monitor the relative humidity, air temperature, dew point temperature, and wet bulb temperature in the workplace.
Ventilation duct: Due to the diameter of the probe being 12mm, it is very suitable for measuring humidity and air temperature in ventilation ducts. Dew point temperature, wet bulb temperature, and humidity can all be automatically calculated in compatible measuring instruments.
Refrigeration system and heat pump: Heating and cooling output are crucial for regulating the refrigeration system and heat pump. Use humidity/temperature probes to measure relative humidity and air temperature (please order two humidity/temperature probes for this measurement), and the heating and cooling outputs are automatically calculated in compatible measuring instruments.
Testo 440 portable temperature and humidity recorder (Detu, Germany)The product includes
Testo 440 Dual Universal Measuring Instrument
Bluetooth connection temperature and humidity probe
Battery, factory report, and instrument box
Technical Specifications
| measurement range | -20 ~ +70 °C |
|---|---|
| measurement accuracy | ±0.5 °C |
| resolution | 0.1 °C |
| Humidity measurement range | 0 ~ 100 %RH |
|---|---|
| measurement accuracy |
±2 %RH (5 ~ 90 %RH)
long-term stability: ±1 %RH / year
±0.03 %RH/K (k=1)
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| resolution | 0.1 %RH |
| storage temperature | -20 ~ +60 °C |
|---|---|
| weight | 165 g |
| size | 290 x 50 x 40 mm |
| Operating temperature | -5 ~ +50 °C |
| Probe rod diameter | 12 mm |
| Probe sleeve length | 140 mm |
| Product color | black/orange |
| Battery Type | 4 x type AA batteries |
| Battery usage time | 140 h |
| data transfer | Bluetooth® |