main features

• Measure 4 parameters: vapor pressure, temperature, atmospheric pressure, relative humidity

• Compatible with SDI-12, can use SDI-12 communication protocol, convenient for accessing data acquisition from manufacturers other than METER

• Compact in size, with sensors measuring only 5 cm x 2 cm

• Good waterproof performance, unique Teflon surface makes ATMOS 14 able to withstand rainstorm

• Fast response speed, PTFE surface is resistant to liquid water and dust, and gaseous water can penetrate well, so it can quickly respond to humidity changes

• Synchronized monitoring of temperature and humidity for higher accuracy

• Equipped with radiation shielding cover
  

TECHNICAL INDEX
relative humidity

Range: 0-100% RH
Resolution: 0.1% RH
Accuracy: varies due to different relative humidity, as shown in Figure 1
Response time (τ, 63%):<40s (when the airflow velocity is 1m/s)
Hysteresis: Typical<1% RH
Long term drift: typical<0.5% RH/year


Figure 1 Relative humidity accuracy

temperature

Scope:- 40~ 80℃
Resolution: 0.1 ℃
Accuracy: varies depending on temperature, as shown in Figure 2
Response time (τ, 63%):<400s (when the airflow velocity is 1m/s)
Long term drift: typical<0.04 ℃/year

Figure 2. Temperature accuracy

vapor pressure

Range: 0~47 kPa
Resolution: 0.001 kPa
Accuracy: Different due to temperature and humidity, as shown in Figure 3

Figure 3. Accuracy of water vapor pressure

atmospheric pressure

Range: 50~110 kPa
Resolution: 0.01 kPa
Accuracy: ± 0.4 kPa

output： DDI serial port or SDI-12
size： 2.0 cm(dia)×5.4 cm(h)
operation temperature：- 40~80℃
interface type： 3.5mm headphone jack or tin plated bare wire jack
Cable lengthStandard 5 meters, customizable in other sizes up to 75 meters in length
Support data collection (to be purchased separately):METER data acquisition (ZL6, EM50/60 series); Other data acquisition devices that can collect 3.6-15.0 VDC signals and communicate through serial ports or SDI-12 communication
Supply voltage (VCC to GND)： 3.6~15.0VDC
Digital input voltageLogic high 2.8~5.5V, typical 3.0V; Logic low -0.3~0.8V, typical 0.0V
Digital output voltageLogic High Typical 3.6V
Power line conversion rate: Minimum 1.0V/ms
current consumptionDuring the measurement period, 4.50~5.00 mA, typical 4.75 mA; Typical 0.03mA during static period
TimeTypical 550ms; Maximum 600ms
Start Time： DDI serial port maximum 100ms; SDI-12 100~1100ms， Typical 1100ms
Capacity per meter of cableTypical 147 pF
Resistance per meter of cableTypical 34 m Ω

Following standardsProduced under the ISO 9001:2015 standard; 2004/108/EC and 2011/65/EU； EN61326-1:2013； EN50581:2012


Origin and Manufacturer:AmericaMETERCompany_{(Former Decagon)}