ATMOS 14 technical specifications
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Technical Specifications

Measurement Specifications
Barometric Pressure
Range: 1.0000 – 120.0000 kPa
Resolution: 0.0100 kPa
Accuracy: ±0.05 kPa at 25 °C
Equilibration time (τ, 63%): < 10 ms
Long-term drift: < 0.1 kPa/year, typical
Range: -40 – 80 °C
Resolution: 0.1 °C
Accuracy: ±0 °C
Equilibration time (τ, 63%): < 165 s (response time in 1 m/s air stream)
Long-term drift: <0 °C year, typical
Relative Humidity (RH)
Range: 0 – 100 % RH (0.00-1.00)
Resolution: 0 % RH
Accuracy: Sensor measurement accuracy is variable across a range of RH. See specification chart.
Equilibration time (τ, 63%): < 25 s (response time in 1 m/s air stream)
Hysteresis: ±1 % RH, typical
Long-term drift: ±0 % RH/year, typical
Vapor Pressure
Range: 0.0000 – 47.0000 kPa
Resolution: 0.0100 kPa
Accuracy: Sensor measurement accuracy is variable across a range of temperatures and RH. See specification chart.
Communication Specifications
DDI serial or SDI-12 communication
Data Logger Compatibility
Any data acquisition system capable of 3.6- to 15.0-VDC power and serial or SDI-12 communication.
Physical Specifications
Height: 5.4000 cm (2.1 in)
Diameter: 2.0000 cm (0.8 in)
Cable diameter
0.165 ±0.004 in (4.20 ±0.10 mm), with minimum jacket of 0.030 in (0.76 mm)
Operating Temperature Range
Minimum: -40 °C
Maximum: 80 °C
NOTE: Sensors may be used at higher temperatures under certain conditions; contact Customer Support for assistance.
Cable Length
5 m (standard)
75 m (maximum custom cable length)

NOTE: Contact Customer Support if a nonstandard cable length is needed.
Connector Types
3.5-mm stereo plug connector or stripped and tinned wires
Conductor Gauge
22-AWG / 24-AWG drain wire
Electrical and Timing Characteristics
Supply Voltage (VCC to GND)
Minimum: 3.6000 VDC
Maximum: 15.0000 VDC
Digital Input Voltage (logic high)
Minimum: 2.8000 V
Typical: 3.6000 V
Maximum: 5.0000 V
Digital Input Voltage (logic low)
Minimum: -0.3000 V
Typical: 0.0000 V
Maximum: 0.8000 V
Digital Output Voltage (logic high)
Typical: 3.6000 V
Power Line Slew Rate
1.0000 V/ms
Current Drain (during measurement)
Minimum: 1.2000 mA
Typical: 3.5000 mA
Maximum: 12.0000 mA
Current Drain (while asleep)
Typical: 0.0300 mA
Power Up Time (SDI-12)
Minimum: 140 ms
Typical: 260 ms
Maximum: 400 ms
Power Up Time (DDI Serial)
Maximum: 110 ms
Power Up Time (SDI-12, DDI Serial disabled)
Typical: 170 ms
Maximum: 200 ms
Measurement Duration
Typical: 50 ms
Manufactured under ISO 9001:2015
2004/108/EC and 2011/65/EU