E+E EE671 Specifications
EE671
HVAC Air Velocity Probe
The compact EE671 air velocity probe is dedicated for HVAC applications.
It operates on the hot-lm anemometer principle and oers high accuracy
and excellent long-term stability.
Reliability
The ow sensing element combines state-of-the-art E+E thin-lm technology with modern transfer molding technology. By this, the EE671 is very
robust and highly insensitive to contamination.
Easy installation
EE671 is available with xed cable or M12 connector. The alignment strip
on the probe facilitates the correct positioning in the air ow. The mounting
ange within the scope of supply enables precise setting of the immersion
depth.
Versatility
The measured data up to 20 m/s (4000 ft/min) is available either on the
analogue voltage output or on the RS485 interface with Modbus RTU protocol.
Congurable and adjustable
The free EE-PCS Product Conguration Software together with an optional adapter facilitates the conguration and
adjustment of the EE671.
Heating and ventilation
Intake air monitoring in ovens
High accuracy and long-term stability
Outstanding resistance to contamination
Easy and quick mounting
User congurable
Technical Data
Air Velocity
Measurement range 0...5 m/s (0...1000 ft/min)
0...10 m/s
0...15 m/s
0...20 m/s
Accuracy1) ±(0.2 m/s / 40 ft/min + 3 % of mv): 0.5...5 m/s (100...1000 ft/min)
at 20 °C (68 °F) / 45 % RH and 1013 hPa (14.7 psi) ±(0.3 m/s / 60 ft/min + 4 % of mv): 1... 10 m/s (200...2000 ft/min)
±(0.35 m/s /
mv = measured value ±(0.4 m/s / 80 ft/min + 6 % of mv): 1... 20 m/s (200...4000 ft/min)
70 ft/min + 5 % of mv): 1... 15 m/s (200...3000 ft/min)
Analogue output signal 0 - 1 / 5 / 10 V2), max. 1 mA
Digital interface RS485 with Modbus RTU protocol, max. 32 unit load devices in one bus
Response time
τ
typ. 4 s
90
General
Supply voltage (Class III) 10...29 V DC SELV
Current consumption max. 50 mA at 20 m/s
Connection
cable 0.5 m
plug M12 connector, 5-pin
Electromagnetic compatibility
3)
EN61326-1
EN61326-2-3
Material / protection class polycarbonate / IP50 (probe head); IP54 (housing)
Temperature range operation: -20...60 °C
storage: -30...60 °C
Humidity range 5...95 % RH (non-condensing)
1) The accuracy statement includes the uncertainty of the factory calibration with an enhancement factor k=2 (2-fold standard deviation). The tolerance was calculated in
accordance with EA-4/02 following the GUM (Guide to the Expression of Uncertainty in Measurement).
2) 0 - 10 V version only with supply voltage ≥ 15 V
3) The EE671 is not short-circuit-proof and not surge-proof (ESD-sensitive device).
(1.6 ft) / 2 m (6.6 ft) cable, PVC, 5x0.25 mm² (AWG 23) with ferrules
(0...2000 ft/min)
(0...3000 ft/min)
(0...4000 ft/min)
(4000 ft/min)
(-4...140 °F)
(-22...140 °F)
FeaturesTypical Applications
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EE671
EE671
Dimensions in mm (inch)
Cable version
15 (0.6”)
Ø12
(0.47”)
Plug version
15 (0.6”)
Ø12
(0.47”)
Flange (included in the scope of supply):
80 (3.14”)
60 (2.4”)
44 (1.7”)
6 (0.2”)
Ordering Guide
130 (5.12”)
121 (4.76”)
106 (4.17”)
115 (4.53”)
Alignment strip
Alignment strip
10 (0.4”)
24.5 (0.9”)
Mounting hole Ø > 16 (0.63”)
M12x1
2.5 (0.1”)
Front view sensing head:
13.4 (0.53”)
(0.06”)
1.5
Alignment strip
The arrow indicates the air flow
direction during factory adjustment.
Model
Output
AV Range
Cable length
Protocol
1) For cable version T14 only
2) Factory setting: Baud rate 9600, Even Parity, Stopbits 1. Other factory settings available upon request. Baud rate choice: 9600 / 19200 / 38400.
Modbus Map and communication setting: see User Guide and Modbus Application Note at www.epluse.com/ee671
1)
2)
with cable
with M12 plug T15
0 - 1 V A1
0 - 5 V A2
0 - 10 V A3
RS485 J3
0...5 m/s (0...1000 ft/min) HV25
0...10 m/s (0...2000 ft/min) HV26
0...15 m/s (0...2000 ft/min) HV27
0...20 m/s (0...4000 ft/min) HV28
0.5 m (1.64 ft)
2 m (6.56 ft) KL200
Modbus RTU P1
Order Example
EE671-T14A2HV26KL200
EE671-
T14
KL50
Model: with cable
Output: 0 - 5 V
AV range: 0...10 m/s (0...2000 ft/min)
Cable length: 2 m (6.56 ft)
EE671
v2.0 / Modification rights reserved
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