Datasheet

EE75
v1.9 / Modification rights reserved
Measuring value
Air velocity
Working range 0... 2m/s
(0...400ft/min)
0... 10m/s (0...2000ft/min)
0... 40m/s (0...8000ft/min)
Accuracy
1)
in air at 25°C (77°F)
2)
0.06... 2m/s (12...400ft/min) ± 0.03m/s / 6ft/min
at 45% RH and 1013hPa 0.15...10m/s
(30...2000ft/min) ± (0.10m/s / 20ft/min + 1 % of measuring value)
0.2... 40m/s (40...8000ft/min) ± (0.20m/s / 40ft/min + 1 % of measuring value)
Uncertainty of factory calibration
1)
± (1% of measuring value, min. 0.015m/s (3ft/min))
Temperature dependence electronics typ. -0.005 % of measuring value / °C
Temperature dependence probe ± (0.1% of measuring value/°C)
Dependence of angle of inflow: < 3% for α < 20°
of direction of inflow: < 3%
Response time
τ
90
3)
< 1.5...40s (configurable)
Temperature
Working range probe: -40...120°C (-40...248°F)
probe cable: -40...105°C (-40...221°F)
electronic: -40...60°C (-40...140°F)
electronic with display: -30...60°C (-22...140°F)
Accuracy at 20°C (68°F) ±0.5°C (±0.9°F)
Temperature dependence electronics typ. -0.01°C / °C
Response time
τ
90
3)
10s
Outputs
output signals and display ranges are freely scaleable (see ranges below)
voltage 0-10V (e.g: 0-5V, 1-5V etc.) -1mA < I
L
< 1mA
current (3-wire) 0-20mA (e.g: 4-20mA etc.) R
L
< 350 Ohm
v-scaling 0...2 / 10 / 40m/s (0...400 / 2000 / 8000ft/min)
T-scaling -40...120°C (-40...248°F)
Vol-scaling 0...10000m³/min (0...353147ft³/min)
General
Supply voltage 24V DC/AC ± 20%
Current consumption max. 100mA; max. 160mA (with display)
Working range humidity 0...99% RH - no condensation
Connection screw terminals max. 1.5mm
2
(AWG 16)
Electromagnetic compatibility EN61326-1 EN61326-2-3 ICES-003 ClassB
Industrial Environment FCC Part15 ClassB
Pressure range Model E and P pressure tight up to 10bar (145psi)
Material housing / protection class: metal (AlSi3Cu) / IP65; Nema 4
measuring probe: stainless steel
measuring head: PBT (polybuthylenterephthalat)
System requirements
for configuration software Windows 2000 or Windows XP
Interface USB 1.1
1) The accuracy statement includes the uncertainty of the factory calibration with an enhancement factor k=2 (2-times standard deviation).
The accuracy was calculated in accordance with EA-4/02 and with regard to GUM (Guide to the Expression of Uncertainty in Measurement).
2) Accuracy refers to measurement in air
3) Response time τ
90
is measured from the beginning of a step change to the moment of reaching 90% of the step.
Technical Data
Configuration Software
An easy setup of the EE75 can be made via standard USB interface and the
software included in the scope of supply.
The user can easily set the response time, correct for the gas (air)
pressure, perform an one or two point adjustment and define the duct cross
section for the volumetric flow rate.
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