1
* The thermocouple K probes do not use the SMART PRO system.
TECHNICAL SPECIFICATIONS
* * Performed in laboratories conditions, accuracies mentioned in this document will be guaranteed, subject to the same conditions or to a
calibration balancing.
The VT 300 is a multi-function instrument, compatible with all SMART PRO probes, and with all thermocouple K temperature
probes. The SMART PRO probes are supplied with calibration or adjusting certificate (last calibration date display when
connected). They are automatically recognized when connected, and are fully interchangeable.
THERMO ANEMO
A HELICE
THERMO ANEMO
A FIL CHAUD
THERMO
HYGRO
THERMOMETRE
TACHY
Units of measure Measuring ranges Accuracies** Resolutions
0,20 to 3m/s ±2% ±0,06m/s 0,01m/s
m/s, fpm 3,1 to 35m/s ±2% ±0,2m/s 0,1m/s
-20 to +80°C ±2% ±0,1°C 0,1°C
Velocity hot-wire m/s, fpm 0 to 3m/s ±3% ±0,03m/s 0,01m/s
3,1 to 30m/s ±3% ±0,1m/s 0,1m/s
Humidity %RH, g/kg 3 to 98%RH ±1% ±1,5%RH 0,1%RH
Dew point °C, °F, K -20 to +80°C ±2% ±0,1°C 0,1°C
°C, °F, K ±0,5% 0,1°C
+1000 to +1300°C ±1% 1°C
Optic
tr/min, rpm, m/min, 60 to 50000tr/min ±0,5% ±1tr/min 1tr/min
Contact 4 to 2500m/min
Velocity vane Ø100mm
Velocity vane
(except vane ø 16mm)
hot-wire
Ambient temperature °C, °F, K
Ambient temperature °C, °F, K
Ambient temperature
Airflow m /h, cfm, l/s, m /s
Airflow
-100 to +400°C ±2% ±0,1°C 0,1°C
-200 to -40°C
-39 to +999°C
±1% ±1,2°C 0,1°C
ft/min, In/min
1 tr/min
33
Velocity telescopic
°C, °F, K
of reading
of reading
m/s, fpm 0,3 to 35m/s ±2% of reading ±0,1m/s 0,1m/s
m/s, fpm 0,6 to 40m/s ±2% of reading ±0,1m/s 0,1m/s
of reading
0 to 65000m /h ±3% of reading ±10m /h 1m /h
of reading
of reading
m/s, fpm 0 to 3m/s ±3% of reading ±0,03m/s 0,01m/s
3,1 to 30m/s ±3% of reading ±0,1m/s 0,1m/s
-20 to +80°C ±2% of reading ±0,1°C 0,1°C
m /h, cfm, l/s, m /s 0 to 65000m /h ±3% of reading ±10m /h 1m /h
of reading
of reading
-20 to +80°C ±2% of reading ±0,1°C 0,1°C
(2 channels) °C, °F, K of reading
Thermocouple K*
(2 channels) of reading
of reading ±0,8°C
of reading ±1,2°C
of reading
±2% of reading ±1m/min 0,1m/min
30 to 20000tr/min
Ø70mm
Velocity vane Ø16mm
333
33 3 3 3
Temperature PT 100
HYGROMETRY PROBE :
Maximum interval guaranteed* :
EMG (GAL) = ±2,70 %RH between 18 and 28°C (general field)
Range of measurement : 3 to 98%RH
Drift at short time : better than 1%RH / year
Response time : 10 seconds
* EMG = Et + Ehl + k (uet +ur +ud +us )1/2
As per the 2000/2001 hygrometer chart :
uet : uncertainty of calibration = ± 0,55%RH
ur : uncertainty of resolution = ± 0,003%RH
ud : uncertainty of manufacturing = ± 0,17%RH
us : repetition of comparison = 0,11%RH
Et : difference due to thermical deflection= ± 0,28%RH
Ehl : difference due to hysteresis and linearity = ± 1,25%RH
k : expansion factor = 2%RH
22 2 2
