SenseAir aSENSE GH (Disp) RL User manual

Document
IMA 279
Rev
3
Page
1 (4)
CO2/ temperature transmitter with relay
for use in greenhouses
1 Back plate 5 Snap-in lid
2 PCB (mounted in the box at delivery) 6 Lid locking screw (not shown)
3 PG7 Cable entry bushing 7 Temperature sensor
4 Attachment loop
If the connection cables are drawn through a conduit the conduit must be
sealed.
Air of different temperature may otherwise disturb the temperature
measurements.
3
1
5
62
7
4
Gas and Air Sensors
aSENSE GH (Disp) RL
Installation Manual

Document
IMA 279
Rev
3
Page
2 (4)
+
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Terminals and jumpers on aSENSE GH (Disp) RL. Darker positions are default
settings
Electrical connections
The power supply has to be connected to and . is considered as
system ground. If analogue output is connected to a controller same ground reference
has to be used for aSENSE GH (Disp) RL unit and for control system! If different
transformers are used, special precautions need to be taken.
PLEASE NOTE! Same ground reference
has to be used for aSENSE GH (Disp) RL
Connect analogue output before
measuring.
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Document
IMA 279
Rev
3
Page
3 (4)
Connection
Terminal
Function
Electrical Data
Remarks
Power (+)
Power ground (-)
24 VAC/DC+ (+-20%),
3W
24 VAC/DC-
2W without output
load
See note 1!
Out(1)
CO2
Out(2)
Temp
Analogue Output 1 (+)
0-2000 ppm
See label for non-
standard
Analogue Output 2 (+)
0-50 oC
See label for non-
standard
0-10 VDC or 0-20 mA,
2-10 VDC or 4-20 mA,
Same as Output 1
According to positions
of Out(1) and start
point jumpers.
See note 2!
According to positions
of Out(2) and start
point jumpers.
See note 2 and 3!
5
6
7
Normally closed relay
Relay COM
Normally open relay
Contact free relay
minimum load 1mA/5V
rated load
0,5A/125VAC;
1A/24VDC
Triggered by register
Out(3)
Standard relay
ON/OFF 1000/900
ppm CO2
See label for non-
standard
8
Not used
Table 1: Electrical connections
Note 1: The ground terminal is used as negative power supply DC input or AC phase ground
(halfwave rectifier). A single transformer may be used for the entire system.
Note 2:aSENSE GH (Disp) RL can deliver a voltage or a current loop for Out(1) / Out(2). To change
between voltage and current output mode the hardware jumpers are used. There is one jumper for
Out(1) and one for Out(2), so that one output can be a voltage output and the other a current output.
Both, voltage output and current output can have start points 0 % (0-10 VDC or 0-20mA) or 20% (2-10
VDC or 4-20mA). The same start point is used for both outputs. See user manual.
Note 3: Please use voltage outputs for temperature measurements. The accuracy of temperature
measurements is valid only for units configured in voltage outputs mode.
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Document
IMA 279
Rev
3
Page
4 (4)
Dimensions and holes
85 (3,35)
9,5 (0,37) 142 (5,59)
40 (1,57)
85 (3,35)
10 (0,39)
38 (1,5)
177 (7,0)
OOO «Измеркон»
196240, Санкт-Петербург Пулковское шоссе,
дом 9, корпус 3 Тел./Факс: [phone]
Тел.: [phone]
[phone]
Mail: o[email protected]
Web: http://www.izmerkon.ru