AST-IS5 Carbon Dioxide Transmitter

Critical Environment Technologies
Canada Inc.
www.critical-environment.com
Installation Manual for
AST-IS5
Analog transmitters with Infrared CO2
& Temperature sensors with LCD display & relay
MANUAL REVISION-C, February 24, 2015
#145, 7391 VANTAGE WAY
DELTA, BC CANADA V4G 1M3
PH: 604-940-8741 TOLL FREE: 877-940-8741
This product is in accordance with EMC 2004/108/EC, 92/31/EEG including amendments by
the CE-marking Directive 93/68/EEC.
This product fulfills 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
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IMPORTANT NOTE
Read and understand this manual prior to using this instrument. Carefully read the
warranty policy, service policy, notices, disclaimers and revisions on the following
pages.
This product must be installed by a qualified electrician or trained technician and
according to instructions indicated in this manual. This instrument should be inspected and calibrated regularly by a qualified and trained technician. For more
information, refer to sections 10 Maintenance and 8 Calibration of this manual.
This instrument has not been designed to be intrinsically safe. For your safety, do
not use it in classified hazardous areas (explosion-rated environments).
INSTRUMENT SERIAL NUMBER:
______________________________________________________
PURCHASE DATE:
______________________________________________________
PURCHASED FROM:
______________________________________________________
WARRANTY POLICY
• Disconnect power before servicing
• Supply: 24 V
Critical Environment Technologies Canada Inc. (CETCI), also referred to as the
manufacturer, warrants this instrument, (excluding sensors, battery packs, batteries, pumps and filters) to be free from defects in materials and workmanship for a
period of two years from the date of purchase by the original owner. The sensors
have a warranty period of one year on a pro-rated basis from the date of purchase. If the product should become defective within this warranty period, we
will repair or replace it at our discretion.
The warranty status may be affected if the instrument has not been used and maintained per the instructions in this manual or has been abused, damaged, or modified in any way. This instrument is only to be used for purposes stated herein. The
manufacturer is not liable for auxiliary interfaced equipment or consequential damage.
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Due to ongoing research, development, and product testing, the manufacturer reserves the right to change specifications without notice. The information contained
herein is based on data considered accurate. However, no warranty is expressed
or implied regarding the accuracy of this data.
All goods must be shipped to the manufacturer by prepaid freight. All returned
goods must be pre-authorized by obtaining a Returned Merchandise Authorization
(RMA) number. Contact the manufacturer for a number and procedures required
for product transport.
SERVICE POLICY
CETCI maintains an instrument service facility at the factory. Some CETCI distributors / agents may also have repair facilities; however, CETCI assumes no liability
for service performed by anyone other than CETCI personnel.
Repairs are warranted for 90 days after date of shipment (sensors have individual
warranties).
Should your instrument require non-warranty repair, you may contact the distributor
from whom it was purchased or you may contact CETCI directly.
Prior to shipping equipment to CETCI, contact our office for an RMA #. All returned
goods must be accompanied with an RMA number.
If CETCI is to do the repair work, you may send the instrument, prepaid, to:
Attention: Service Department
Critical Environment Technologies Canada Inc.
Unit 145, 7391 Vantage Way
Delta, BC, V4G 1M3
Always include your Returned Merchandise Authorization (RMA) number, address,
telephone number, contact name, shipping / billing information, and a description of
the defect as you perceive it. You will be contacted with a cost estimate for expected repairs, prior to the performance of any service work.
For liability reasons, CETCI has a policy of performing all needed repairs to restore
the instrument to full operating condition.
Pack the equipment well (in its original packing if possible), as we cannot be held
responsible for any damage incurred during shipping to our facility.
COPYRIGHTS
This manual is subject to copyright protection; all rights are reserved. Under inter4
national and domestic copyright laws, this manual may not be copied or translated,
in whole or in part, in any manner or format, without the written permission of
CETCI.
DISCLAIMER
Under no circumstances will CETCI be liable for any claims, losses or damages
resulting from or arising out of the repair or modification of this equipment by a party other than CETCI service technicians, or by operation or use of the equipment
other than in accordance with the printed instructions contained within this manual
or if the equipment has been improperly maintained or subjected to neglect or accident. Any of the forgoing will void the warranty.
Under most local electrical codes, low voltage wires cannot be run within the same
conduit as line voltage wires. It is CETCI policy that all wiring of our products meet
this requirement.
It is CETCI policy that all wiring be within properly grounded (earth or safety) conduit.
REVISIONS
This manual was written and published by CETCI. The manufacturer makes no
warranty or representation, expressed or implied including any warranty of merchantability or fitness for purpose, with respect to this manual.
All information contained in this manual is believed to be true and accurate at the
time of printing. However, as part of its continuing efforts to improve its products
and their documentation, the manufacturer reserves the right to make changes at
any time without notice. Revised copies of this manual can be obtained by contacting CETCI or visiting www.critical-environment.com.
Should you detect any error or omission in this manual, please contact CETCI at
the following address:
Critical Environment Technologies Canada Inc.
Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada
Toll Free:
+1.877.940.8741
Telephone:
+1.604.940.8741
Fax:
+1.604.940.8745
Email:
marketing@cetci.com
Website:
www.critical-environment.com
In no event will CETCI, its officers or employees be liable for any direct, special,
incidental or consequential damages resulting from any defect in any manual, even
if advised of the possibility of such damages.
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AST-IS5
ANALOG TRANSMITTER
with
INFRARED CO2 SENSOR & TEMPERATURE SENSOR
and
LCD DIGITAL DISPLAY
The AST-IS series are reliable, long life analog transmitters. Life expectancy of the
infrared sensor is 15-years. The AST-IS5 is an advanced transmitter that has been
designed for use in the “climate zone”.
The AST-IS5 measures both CO2 gas and temperature in the ambient air and can
transmit data to a BAS system or controller. The local LCD display provides real
time values for the user. Standard measurement range is 0-2000 ppm.
SELF DIAGNOSTICS
The system contains complete self diagnostic procedures. A full system test is
executed automatically every time the power is turned on. In addition, constantly
during operation, the sensors are checked against failure by checking the valid
dynamic measurement ranges. All EEPROM updates, initiated by the sensor itself
are checked by subsequent memory read back and data comparisons. These
different system checks return error bytes to the system RAM.
NOTE: The sensor accuracy is defined as continuous operation (at least 3weeks after installation).
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FUNCTIONAL DESCRIPTION
OUT-1 = Measuring signal of CO2 concentration lowest value - highest value.
OUT-2 = Measuring signal of temperature lowest value - highest value.
OUT-3 = ON / OFF signal of demand of air quality
The opening of the relay is controlled by the hysteresis of the relay.
CO2 concentration
OUT-2 100%
Measuring
Signal
0%
lowest value
* The measuring signal of CO2
highest value
Measured temperature
OUT-2 100%
Measuring
Signal
0%
lowest value
highest value
* The measuring signal of temperature
Relay (ON / OFF)
Relay
Closed
Open
* The relay output
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TECHNICAL SPECIFICATIONS
GAS TYPE
Carbon Dioxide (CO2)
MECHANICAL
Enclosure
General Purpose PVC., IP30 rated
Size
4.7” x 3.2” x 1.2” (120mm x 82mm x 30mm)
ELECTRICAL
Power Requirement
24 VDC or VAC
Linear Outputs
4 - 20 mA or 0 - 10 VDC
Relay Output
1 SPDT 50 VAC @ 1A; 24 VAC @ 1A (1000 ppm)
SENSORS
Infrared CO2 Sensor
Sampling Method Non-dispersive infrared
Monitoring Method Diffusion
Range 0—2,000 ppm
Temperature Sensor Range
0oC to 50oC (32oF to 122oF)
Accuracy
+/- 30 ppm, +/- 3% of reading
ENVIRONMENTAL
Operating Temperature
0oC to 50oC (32oF to 122oF)
Humidity
0—95% RH non-condensing
CERTIFICATION
CE and compliance with ISO 9001:2008
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DEFAULT OUTPUT CONFIGURATION FOR AST-IS5
TERMINAL
DEFAULT
OUTPUT
DEFAULT
OUTPUT
RANGE
OUT-1
4-20 mA
0-2000 ppm CO2
OUT-2
2-10 VDC
0 - 50oC
RELAY
Closed
Open
>1000 ppm CO2
<900 ppm CO2
OUTPUTS OF
THIS SENSOR
OUTPUT
RANGE OF
THIS SENSOR
FORMULAS FOR CALCULATING OUTPUT VALUES
Configuration
Output Range
Formula for Calculation
0-10 VDC
0-2000 ppm CO2
0 - 50oC
CO2 value = Volt / 10 * 2000
Temperature value in C = Volt / 10 * 50
2-10 VDC
0-2000 ppm CO2
0 - 50oC
CCO2 value = (Volt-2) / 8 * 2000
Temperature value in C = (Volt-2) / 8 * 50
4-20 mA
0-2000 ppm CO2
0 - 50oC
CO2 value = (nA-4) * 2000 / 16
Temperature value in C = (mA-4) * 50 / 16
a-b
c-d
Value = (reading-a) / (b-a) * (d-c) + c
a = lowest value of the configuration
b = highest value of the configuration
c = lowest value of the range
d = highest value of the range
NOTE: RED LED is lit when the relay output is closed.
OUTPUT CONFIGURATIONS
JUMPER
POSITION
FUNCTION
Start point
selection jumper
0%
Jumper top position provides 0VDC or 0mA start point
for OUT-1, OUT-2 (0-20 mA or 0-10 VDC)
20%
Jumper bottom position provides 2VDC or 4mA start
point for OUT-1, OUT-2 (4-20 mA or 2-10 VDC)
Current
Connection in position “Current” provides 0/4-20 mA
output range for OUT-1
Voltage
Connection in position “Voltage” provides 0/2-10 VDC
output range for OUT-1
Current
Connection in position “Current” provides 0/4-20 mA
output range for OUT-2
Voltage
Connection in position “Voltage” provides 0/2-10 VDC
output range for OUT-2
OUT-1
OUT-2
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INSTALLING THE TRANSMITTER
DRAWING #1
ITEM LOCATORS
1 top portion
2 lid
3 front portion
4 wall plate
5 screw
6 label with settings inside the top portion
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INSTALLING THE TRANSMITTER, CONT’D…..
DRAWING #2
DRAWING #3
PULL THE TOP PORTION
UPWARD TO REMOVE IT
REMOVE THE SECURING SCREW
FROM THE TOP PORTION, ITEM-5 IN
ITEM LOCATOR ON PREVIOUS PAGE
DRAWING #4
FOLD THE FRONT PORTION (ITEM-3,
DRAWING-1) WITH THE LID (ITEM-2,
DRTAWING-1), FORWARD AND LOOSEN IT FROM THE HOOKS (ITEM-1,
DRAWING-4)
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INSTALLING THE TRANSMITTER, CONT’D…..
DRAWING #5
SECURE THE WALL PLATE WITH
SCREWS. MAXIMUM SCREW HEAD DIAMTER SHOULD BE 7.5 mm. MAXIMUM
SCREW HEAD HEIGHT SHOULD BE 2.5
mm.
DRAWING #6
A - PUT THE TOP TABS OF THE FRONT PORTION INTO
THE TOP HOLES OF THE WALL PLATE.
B - PRESS THE LOWER EDGE OF THE CASE ONTO THE
WALL PLATE TO LATCH IN PLACE.
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INSTALLING THE TRANSMITTER, CONT’D…..
DRAWING #7
THE TOP PORTION IS PUSHED UNDER
THE LOCKING HOOKS OF THE WALL
PLATE AND IS SECURED WITH A SCREW
NOTE: IF FOR SOME REASON THE PCB
MUST BE REMOVED, HANDLE IT VERY
CAREFULLY ONLY BY THE EDGES TO
PROTECT IT FROM STATIC DISCHARGE
DAMAGE. NORMALLY REMOVING THE
PCB IS NOT REQUIRED.
TERMINALS & JUMPERS FOR AST-IS5:
THE TERMINALS & JUMPERS ARE LOCATED UNDER THE TOP PORTION.
THE DARKER AREAS ARE INDICATING THIS TRANSMITTER HAS BEEN SET FOR
VOLTAGE OUTPUT.
DRAWING #8
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OUTPUT - 3 RELAY - CLOSED - >1000 PPM
OUTPUT - 3 RELAY - OPEN - <900 PPM
ANALOG OUT 2-10VDC(+) Temp
OUT-2
M - SIGNAL GROUND (-)
ANALOG OUT 4-20mA(+) CO2
POWER GROUND (-)
OUT-1
+
NOTE: STANDARD
RANGE IS 0-2000 PPM
POWER 24VAC / DC+
WIRING TERMINALS & SIGNAL OUTPUT JUMPER SETTINGS
PHOTO #1
CURRENT OUTPUT JUMPER SET
VOLTAGE OUTPUT JUMPER SET
REFERENCE DRAWING #8 ON
PAGE-7 FOR MORE DETAILS.
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WIRING TERMINALS & SIGNAL OUTPUT JUMPER SETTINGS, CONT’D….
Connection
Terminal
G+
Function
Electrical Data
Power (+)
24 VAC/DC+ (+-20%), 3W
Power ground (-)
24 VAC/DC-
Analogue Output 1
(+)
0-10 VDC or 0-20 mA,
2-10 VDC or 4-20 mA,
Remarks
2W without output load
See note 1!
G0
OUT 1
According to positions of
OUT1 and start point
jumpers.
See note 2!
Same as Output 1
OUT 2
M
Analogue Output 2
(+)
Connected to G0 via PTC
fuse
According to positions of
OUT2 and start point
jumpers.
See note 2!
See note 1!
Signal Ground (-)
The power supply has to be connected to G+ and G0. G0 is considered as system
ground. If the analogue output is connected to a controller the same ground reference
has to be used for the AST-IS5 unit and for the control system! Unless different
transformers are used, special precautions need to be taken.
PLEASE NOTE! The AST-IS5 signal ground is not galvanically separated from the AST
-IS6 power supply!
PLEASE NOTE!
The same ground reference has to be used for the AST-IS5 unit and for the control
system!
Note 1: The ground terminal is used as negative power supply DC input or AC phase
ground G0 (halfwave rectifier). The signal ground M, is protected by a PTC resistor, is
the same as power ground G0 (permitting a ”3-wire” configuration). A single transformer
may be used for the entire system.
Note 2: AST-IS5 can deliver a voltage or a current loop for OUT1/OUT2. To change
between voltage and current output mode the hardware jumpers are used. There is one
jumper for OUT1 and one for OUT2, 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 the function manual.
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Critical Environment Technologies Canada Inc.
Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada
Toll Free: +1.877.940.8741
Tel: +1.604.940.8741
Fax: +1.604.940.8745
www.critical-environment.com
AST20150224-C-AST-IS5-Manual-Rev-C
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