SOS – Smart Outdoor Sensor

SOS is a wall-mounted unit of an air type transmitter that is installed outdoors. It provides a stable, repeatable, reliable and accurate means of measuring both temperature and humidity. The polymer capacitance sensor used in the SOS is not affected by any condensation, high humidity or contaminants present in the measuring environment.

Built with miniaturized electronics, the SOS sensor is interchangeable, therefore no recalibration is required at all. A complete plug and play solution for quick and easy installation that minimizes installation & maintenance costs. Its sophisticated integrated circuits design provides a full humidity and temperature compensated 4-20mA-output signal. The SOS enclosure is made of ABS plastic.

Features:

  • Sensor Element: NTC & HIH4000
  • Input A/D Resolution: 12 bits
  • Sensing Range: Temperature (0 – 70 Degree Celsius) & Humidity (0 – 100 % rh)
  • Output: 2 x 4~20 mA, five-wire connection for measuring temperature & humidity
  • Interchangeability: The Transmitter (Sensor & Electronic) is interchangeable with other transmitters
  • LCD Display: display temperature & humidity including temperature & humidity set-point value
  • Communication: RS-485
  • Protocol: Modbus RTU
  • Power Supply: 12 – 24 Vdc.
  • Mounting: Wall or panel

Hardware & Software Specifications

 

SOSTO

SOSTH

SOSOH

Temperature Sensor

✓

✓

N/A

Humidity Sensor

N/A

✓

✓

Power Supply

12 – 24Vdc

Power Consumption

6 VA

Input A/D Resolution

12 bits

Output Signal

2 x 4~20mA

Accuracy

Temperature (±0.1°C @ 25°C / ±0.2°C (0°C to 70°C)) and humidity
(±2%RH (10…90%) / ±4%RH (0…10%; 90…100%))

Response Time 

For temperature: 10s (still air) / 10s (with 3m/s air speed).
For humidity: 4s (still air) / 4s (with 3m/s air speed)

Communication

2 wire RS-485

Baud Rate

9600 bps

Protocol

Modbus RTU

Surge Protection

15KV ESD for serial port

Operating Condition

0~+70°C / 0-100% RH, non-condensing

Storage Condition

-20~+70°C / 0-100% RH, non-condensing

Mounting

Wall or Panel

Protection

IP30

Weight

240 g

Dimensions

110mm x 39mm

Hardware Dimensions