Stand Alone Humidity and Temperatue Sensors E-mail
In addition to our main products we also offer external, stand-alone humidity/temperature sensors and air quality sensors. All sensors are fully compatible with our controlling software using existing Museum Wi-Fi network.

Basic RH/T sensor
– compact size 90 mm x 45 mm x 12 mm consist RH and Temperature sensors. Sensor can be connected to a PC computer using our standard network setup (see network manual for exact instructions). Sensor does not have data logging capabilities but if a PC computer with our software is continually running, then data from all devices in the network are logged on this computer and can be checked any time. Sensors are powered by 12 VDC power supply connected to the power outlet.

DL RH/T sensor
– larger size, 63 mm x 116 mm x 13 mm includes build in data logging on micro SD card. Sensor can also be connected to a PC computer using our standard network setup (see network manual for exact instructions). Sensors are powered by 12 VDC power supply connected to the power outlet.

 

Basic RH/T sensor

DL RH/T sensor

RH Accuracy

Tolerance

 

 

0…20%RH =  +/- 3 … 5% RH

20…80%RH =  +/- 2 … 3% RH

80…100%RH =  +/- 3 … 5% RH

0…10%RH =  +/- 3 … 4% RH

10…90%RH =  +/- 1.8 … 2% RH

90…100%RH =  +/- 3 … 4% RH

T Accuracy

Tolerance

0…60C

+/- 0.3C

+/- 0.2C

Wi-Fi

yes

yes

Display

128x64 monochrome

128x128 color

Enclosure

12mm x 45mm x 90mm

12mm x 63mm x 115mm

MicroSD card logging

no

yes

Reading from SD card to PC

no

yes

Setup presets via Wi-FI from smartphone

yes

yes

Show RH/T on display each 20s

yes

no

Show RH and T on display

no

yes

Real Time clock

no

yes

 

 

 

WiFi RH/T sensors.

Preservatech’s RH/T sensors with build in data loggers, are designed to read and log RH, temperature, date and time.

Each sensor measures the RH and temperature logging this data along with actual time on a micro sd card. Data can be read and analyzed in Preservatech software by WiFi or directly through the micro sd card.

Each sensor is equipped with a simple display showing actual RH and Temperature.

Specification

 

Relative Humidity

Temperature

Accuracy

±2%

±0.3˚C

Repeatability

0.1%

0.1˚C

Response time

8s

5-39s

Long term drift

<0.5%/year

<0.04˚C/year

Data Logging

4Gb Micro SD card. FAT 32 formatted

Logging capacity

Max File size 4Gb – for logging every 5 minutes – 450 days

For logging every 15 minutes 1300 days.

After reaching max file size, data overrides.

Data acquisition

WiFi network, PC computer running Windows 7 or higher.

Display

Monochrome

Power

5VDC micro

Chip

SHT21

Chip Manufacturer

Sensirion – Switzerland

Size

12mm x 63mm x 115mm

Color

White or Black (other also available upon request)


When data is needed a Windows PC computer can download all current data that has not yet been downloaded, enabling the computer to analyze current as well as historical data.
System utilizes existing WiFi network so sensors can be installed anywhere within WiFi network reach.

 
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