Physical specs
Weight
948 gram (incl. internal battery, excl. solarpanel and mount)
Dimensions
Dimensions of the CityProbe 2
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Lifespan and servicing
Lifespan and servicing intervals is directly correlated to the context that the unit is operating in, including temperature, humidity and overall seasonal variations.
Our high-performance solarpanels has a lifespan over +10 years with a high UV resistant coating.
The internal hardware is protected by both hydrophobic mesh at air inlets and outlets, with electronics being coated and encapsulated to prevent damage from high air humidity.
Active components, such as the particulate matter sensor and fans have a MTBF (mean-time before failure) of approximately 7 years.
CityFlow has a device health algorithm in check that monitors each CityProbe 2’s array of sensors.
Environment conditions
Operating temperature: -35°C ~ 65°C
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Data and communication
Quectel EG91-E modem
Backwards-compatible with existing GSM/GPRS and UMTS/HSPA+ networks, ensuring that it can be connected even in remote areas devoid of 4G network coverage.
LTE category 1 module for EMEA region (Europe, Middle East, East Asia)
3GPP E-UTRA Release 13
LTE FDD Cat 1 bands supported: B1/B3/B7/B8/B20/B28A
WCDMA: B1/B8
GSM/EDGE: B3/B8
Certification
Carrier (Europe): Deutsche Telekom
Global: GCF
Europe: CE
Brazil: Anatel (ongoing)
Australia & New Zealand: RCM
Russia: FAC
Others: WHQL/RoHS
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Noise sensor
Precision, accuracy and range:
100Hz ~ 10kHz
Omnidirectional (-42dB ±3dB @ 94dB SPL)
59dB S/N ratio
Note: Initial calibration at AU Engineerings sound lab done by MONTEM
Temperature sensor
Precision, accuracy and range:
Temperature accuracy:
-20 °C to 50 °C
-0.1 (min) ±0.05 (typ) 0.1 (max)
Operating temperature: -55°C to 150°C
Pressure sensors
Accuracy and range, operating temperature
Operating Pressure: 260 hPa to 1260 hPa
Accuracy: +/- 1 hPa, +/- 4 hPa
Operating Temperature: -40 C to +85 CHumidity and Temperature sensor
Accuracy and range, operating temperature :
RH Range: 0 % to 100 %
RH Accuracy: +/- 2 %
Full Temp Accuracy: 0.3 C
Operating Temperature: - 40 C to +125 C
UV Index/Ambient Light sensor
Accuracy and range:
Accuracy UV sensor: 0 to > 20 uV
Ambient light sensor resolution: <100 mlx
Ambient Light sensors
Tolerance, range, resolution:
ALS output tolerance: ≤ 10 %
Range: 0 lx to about 120 klx
Resolution: 0.0036 lx/ct
Particulate Matter sensor
Mass concentration range and precision (μg/m3):
Mass concentration range: 0 to 1’000 μg/m3
Precision for PM1 and PM2.5:
±10 μg/m3 @ 0 to 100 μg/m3,
±10 % m.v. @ 100 to 1000 μg/m3
Precision for PM4, PM10:
±25 μg/m3 @ 0 to 100 μg/m3,
±25 % m.v. @ 100 to 1000 μg/m3
Number concentration range and precision (#/cm3):
Number concentration range:
0 to 3’000 #/cm3
Precision for PM1 and PM2.5:
±100 #/cm3 @ 0 to 1000 #/cm3
±10 % m.v. @ 1000 to 3000 #/cm3
Precision for PM4, PM10:
±250 #/cm3 @ 0 to 1000 #/cm3
±25 % m.v. @ 1000 to 3000 #/cm3
Accelerometer
Range and sensitivity:
Measurement Range:
±2, ±4, ±8, ±16 g
Sensitivity:
256 (±2g) ~ 32 (±16g) LSB/g
4 mg/LSB
Bandwidth:
0.05Hz ~ 1.6kHz
Fuel Gauge (battery monitor)
Precision and operating temperature:
Voltage Error: ±7.5 mV/cell
Voltage-Measurement Resolution: 1.25 mV/cell
Operating Temperature Range: -40°C to +85°C
GPS
Frequency: 1.575GHz, 1.602GHz
Sensitivity: -165dBm
Data Rate (Max): 400kbps
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RGB Light Output
Note: The RGB LEDs on the top sensor board provides visual feedback to pedestrians about the measurements.
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Power
Peak power usage: 4,3V 1A (when broadcasting over LTE)
Can accept up to 12 V input for charging.