E+E EE671 Operating Manual

USER‘S GUIDE

EE671 - Miniature Air Flow Transmitter

GENERAL

The EE671 air velocity transmitter operates on the hot-film anemometer principle and features an innovative, very robust E+E sensing element manufactured in thin-film technology combined with innovative transfer-molding. The mounting flange allows for correct positioning and easy adjustment of the immersion depth. EE671 is dedicated for accurate and reliable measurement in building automation and ventilation applications. For special applications do not hesitate to contact the manufacturer or their local distributor.

CAUTION

• Accurate measurement results are conditioned by the correct positioning of the probe in the air stream. Best accuracy is achieved in laminar flow

• Observe the minimum inlet and outlet path length, see page 4.

• Avoid mechanical stress on the probe and mainly onto the sensing head.

• Observe the humidity working range 5 … 95 % RH, non-condensing.

• Avoid installation in corrosive environment, as this may lead to sensor destruction.

WIRING

EE671 is ESD-sensitive device. It is neither short-circuit-proof, nor not surge-proof. The digital communication lines may not be connected to the supply lines.

1 2

Plug version Cable version Analogue output Modbus RTU output

1 grey SDA (digital setup interface E2) V+ = Supply voltage 2 brown GND RS485-B (=D-) 3 green AV = Analogue output RS485-A (=D+) 4 yellow SCL (digital setup interface E2) GND 5 white V+ = Supply voltage n.c.

view on

sensor plug

Accessory HA0108xx - connecting cable

DIMENSIONS mm (inch)

Cable version:

15 (0.6“)

ø12

(0.47“)

Plug version:

15 (0.6“)

130 (5.12“) 115 (4.53“)

Führungssteg / alignment strip

121 (4.76“)

106 (4.17“)

Analogue output Modbus RTU output

1 brown SDA (digital setup interface E2) V+ = Supply voltage 2 white GND RS485-B (=D-) 3 blue AV = Analogue output RS485-A (=D+) 4 black SCL (digital setup interface E2) GND 5 gray V+ = Supply voltage n.c.

Front view sensor head:

13.4 (0.53“)

Flange:

ø12

(0.47“)

44 (1.7“)

6 (0.2“)

Führungssteg / alignment strip

80 (3.14“)

60 (2.4“)

Detail A

10 (0.4“)

24.5 (0.9”)

M12x1

15.8 (0.62”)

2.5 (0.1”)

Recess for alignment strip

Detail A:

Führungssteg / alignment strip

1.5 (0,06“)

TECHNICAL DATA

Flow measurement

Measurement range

0... 10 m/s (0...2000 ft/min)

0... 15 m/s (0...3000 ft/min)

0... 20 m/s (0...4000 ft/min) Output signal analogue1) 0 - 1 V (max. 1 mA) 0 - 5 V (max. 1 mA) 0 - 10 V RS485 Modbus RTU Accuracy3) 0.5...5 m/s (100...1000 ft/min): ±(0.2 m/s / 40 ft/min + 3 % of measured value)

at 20 °C (68 °F) / 45 % rh and 1013 hPa (14.7 psi) 1... 10 m/s (200...2000 ft/min): ±(0.3 m/s / 60 ft/min + 4 % of measured value)

1... 15 m/s (200...3000 ft/min): ±(0.35 m/s / 70 ft/min + 5 % of measured value)

1... 20 m/s (200...4000 ft/min): ±(0.4 m/s / 80 ft/min + 6 % of measured value) Response time

0... 5 m/s (0...1000 ft/min)

typ. 4 s

(max. 1 mA)

General

Supply voltage (Class III) 10...29 V DC SELV Current demand max. 50 mA at 20 m/s

(4000 ft/min)

Temperature range operation: -20...60 °C (-4...140 °F) storage: -30...60 °C (-22...140 °F) Operating range humidity 5...95 % RH (non-condensing) Connection Cable version 0.5 m (1.6 ft) / 2 m (6.6 ft) cable, PVC, temperature-flexible, 5x0.25 mm² (AWG 23) with ferrules Plug version M12 connector system, 5-pin

Electromagnetic compatibility

EN61326-1 ICES-003 ClassB EN61326-2-3 FCC Part 15 Material / protection class polycarbonate / IP50 (probe head); IP54 (housing)

1) See ordering information

2) Only at supply voltage V+ ≥ 15 V

3) 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).

4) The EE671 is not short-circuit-proof and not surge-proof (ESD-sensitive device).

SCOPE OF SUPPLY

• EE671 transmitter according to ordering guide

• Protection cap

• Mounting flange

• User manual

MODBUS RTU

The EE671 air flow transmitter can be operated in a Modbus RTU network with max. 32 devices. For Modbus protocol settings see Application Note Modbus AN0103 (www.epluse.com/EE671).

The factory setting for the Slave-ID is 238 as an integer 16Bit value. This ID can be customised in the register 0x00 (value margin 1 - 247 permitted).

MODBUS MAP:

[DEC]

Read registers (function code 0x03 / 0x04)

30001 0x00 Serial number ASCII 30009 0x08 Software version Binary 30010 0x09 Transmitter name ASCII 30026 0x19 Temperature °C 32-bit float 30028 0x1B Temperature °F 32-bit float 30030 0x1D Temperature K 32-bit float 30032 0x1F Air velocity m/s 32-bit float 30034 0x21 Air velocity ft/min 32-bit float 30046 0x2D Temperature °C x 100 16-bit integer 30047 0x2E Temperature °F x 100 16-bit integer 30048 0x2F Temperature K x 100 16-bit integer 30049 0x30 Air velocity m/s x 100 16-bit integer 30050 0x31 Air velocity ft/min x 10 16-bit integer

Write registers (function code 0x06)

60001 0x00 Network address 60002 0x01 Communication parameter

Protocol

address [HEX]

Measured value Unit Type

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