In order to be able to offer high quality meteorological sensors at a competitive price, Microsigma has developed the following sensors: 

MS 302 - Temperature & Humidity Sensor  
Temperature measurement is obtained by means of a Platinum 1/3DIN RTD sensor (PT1000) using low-power, precision OP-AMPs to minimize the errors due to self heating and offset.

        Range: -40°C to +65°C 
        Accuracy: ± 0.3°C
        Output: 0V at -40°C to +1.05V at +65°C (10mV/°C)
       

The measurement of Relative Humidity is obtained by means of a high-quality capacitive transducer.             

        Range: 0 to 100% 
        Accuracy: ±2% from 0 to 90% RH
        Output: 0 to 1V (10mV/%RH)
  
MS 305 - Barometric Pressure Sensor 
Our barometric sensor is based on a high accuracy, compensated and temperature-stabilised, absolute pressure transducer.

        Range: 800 hPa to 1100 hPa 
        Accuracy: ± 1 hPa (at 20°C)
        Output: 0 to 4.8V DC (16mV/hPa)
 

MS 305SO - Barometric Pressure Sensor

Same as the MS305, with an added output serialiser feeding an RS485 output line.

MS502ASP - Aspirated Temperature and Humidity Sensor.

This is the latest addition to our sensor product line. The MS502ASP was devised in order to minimise the error associated with air temperature measurements in conditions of direct solar radiation and low wind speed, when the sensor's solar shield cannot avoid an over-heating of the sensor. The sensor is provided with two analog outputs or with a single RS485 output serial line.

         T Range: -20 to +70 °C   Accuracy: +/- 0.2°C from -20 to +60°C 

         RH Range: 0 to 100% RH  Accuracy: +/- 2% from 10 to 90% RH