SenseAir eSENSE II FAI Disp User manual

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CO2transmitter and alarm
eSENSE II FAI Disp
General
The alarm product eSENSE is designed to measure carbon dioxide (CO2) in rooms.
Option - Disp displays the measured CO2value in ppm (parts-per-million) on the
LCD. LEDs are lit to give an overview of the CO2value.
An acoustic alarm sounds when the CO2value is above 1400ppm. The acoustic
alarm can be silenced with a push button on the side of the instrument.
The units are designed for connecting to Direct Digital Control (DDC) with 0-10V
signal inputs.
Gas and Air Sensors
eSENSE II FAI Disp
Installation Manual

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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.
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)
Front
Wall
Insert screw driver
Push upwards to open
Front
Wall
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
Remarks
+~
Power (+)
Power ground
(-)
24 VAC/DC+ (+-
20%), 2W
24 VAC/DC-
System voltage reference
OUT1
OUT2
Analogue
output 1 (+)
Silences the
acoustic alarm
0-10 VDC
0-2000 ppm CO2
A push on the push button
silences the acoustic alarm for 30
minutes.
Table I. Connections of the main terminal of eSENSE
LED Colour
Electrical data
Remarks
Green
0VDC
10VDC
Lit between 0-800 ppm CO2
Yellow
0VDC
10VDC
Lit between 800-1400 ppm CO2
Red
0VDC
10VDC
Lit above 1400 ppm CO2. Buzzer sounds.
Table II. The LEDs
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 is exceeded.
Maintenance
The eSENSE is basically maintenance free in normal environments thanks to the
built-in self-correcting ABC algorithm. Discuss your application with your distributor in
order to get advice for a proper calibration strategy.
PLEASE NOTE! The sensor accuracy is defined at continuous operation (at
least 3 weeks after installation)
Electronic products should be disposed of via a suitable recycling centre.

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Figure 3. The eSENSE II PCB
Figure 4. The upper part of the eSENSE II PCB seen from the back with the jumper in
voltage (default) and current position
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 Phone: +46-(0)653 - 71 77 70
Box 96 E-mail: [e-mail]
820 60 Delsbo
SWEDEN Web site: www.senseair.com