SenseAir eSENSE II User manual

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CO2transmitter
eSENSE II eSENSE II - Disp
General
The IAQ-sensor product eSENSE II (sensor for wall mounting) is designed to
measure carbon dioxide (CO2) in rooms. Option - Disp displays the measured CO2
value in ppm (parts-per-million) on the LCD.
The units are designed for connecting to Direct Digital Control (DDC). The two
parallel signal outputs OUT1 (0-10 V) and OUT2 (2-10 V or 4-20 mA) give linear
signals corresponding to the measuring range.
The OUT2 output also indicates the status by setting the output voltage to 1 V or
current to 2 mA when the sensor self-diagnostics detects any error.
To open the wall mounted housing
Figure 1. Closed housing seen from the top and the side. The housing is opened by inserting a screw
driver and pushing to the front side of the housing. The locking hooks will then be released.
Front
Wall
Insert screw driver
Push upwards to open
Front
Wall
Gas and Air Sensors
eSENSE II (Disp)
Installation Manual

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Figure 2. Closed housing seen from the side. Figure 3. Closed housing seen from the side.
The housing is opened by inserting a Never push to the right. The locking hooks may
screw driver and pushing left (to the front side). break and the housing is damaged
The locking hooks will then be released.
Dimensions
Figure 3. The dimensions of the sensor in mm and (inches)
128,4(5,06)
85(3,34)
32,7(1,29)
30(1,18)30(1,18)
30(1,18)
30(1,18)
52,5(2,07)
30(1,18)

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Electrical connections
The power supply has to be connected to and . is considered as system
ground. The same ground reference has to be used for the eSENSE unit and for the
DDC/signal receiver.
PLEASE NOTE!
The same ground reference has to be used for the eSENSE
unit and for the control system!
Terminal
Function
Electrical data
Standard settings
Settings of
this sensor
Power (+)
Power
ground (-)
24 VAC/DC+
(+-20%), 2W
24 VAC/DC-
System voltage
reference
OUT(1)
OUT(2)
Analogue
output 1 (+)
Analogue
output 2 (+)
0-10 VDC
2,0…10,0 VDC or
4,0 … 20,0 mA
0,9…1,6 VDC or
1.5 to 2,5 mA
0 VDC or 0mA
0-2000 ppm CO2
0-2000 ppm CO2
Status = ERROR
Status = NOT
READY
Table I. Connections of the main terminal of eSENSE
Figure 4. The eSENSE II PCB seen from the front and the back. The OUT2 jumper is in
the default position (voltage)
~
+
~
+

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Configuration jumper for OUT2 output
The output OUT2 can be used as a voltage or current output. The output is
configured by the jumper on top of the PCB. The configuration of the output can be
changed by moving the jumper to the desired position. The output has to be
reconfigured before the unit is powered up.
Figure 5. The upper part of the eSENSE II PCB seen from the back with the jumper in
voltage (default) and current position
Self-diagnostics
The system contains complete self-diagnostic procedures that are executed
automatically when the sensor is in operation. Sensors with display show a wrench if
an error is found. The wrench is shown during the first seconds after power up and if
the measuring range 2000 ppm is exceeded. The output OUT2 indicates the same
information by setting the output to 1 V or 2 mA.
PLEASE NOTE!
The sensor accuracy is defined at continuous operation (at least 3 weeks after
installation)
This product is in accordance with the EMC 2004/108/EC, 92/31/EEG including
amendments by the CE-marking Directive 93/68/EEC.
The product fulfils the following demands: EN 61000-4-2 level 2, EN 61000-4-3 level
2, EN 61000-4-4 level 4, EN 61000-4-6, EN 61000-4-8 level 4, EN 55022 class B
SenseAir® AB (headquarter)
Stationsgatan 12
Box 96
820 60 Delsbo
SWEDEN
Phone: [phone]
E-mail: [e-mail]
Web site: www.senseair.com