Azbil CY8100C1001 User manual

AB-7175
© 2014-2016 Azbil Corporation All Rights Reserved.
1
Specifications/Instructions
Duct CO2Sensor
General
Duct CO2sensor Model CY8100C1001 in combination with
Part No. 83165722-002 is a duct-mount CO2sensor used for
detecting carbon dioxide (CO2) concentration in a duct. This
product is used in a wide range of applications such as
monitoring of CO2concentration in a return duct, control of
outdoor air intake, and so on.
Features
●Non-dispersive infrared (NDIR) sensor
●Linear output signal in 1 V DC to 5 V DC range
●Long-term stability
●CE Marking certified product:
Model CY8100C1001 conforms to all the applicable
standards of CE Marking.
Model Number
Model number Description
CY8100C1001 Duct CO2sensor
Part Numbers of Items Sold Separately
Part number Description
83165722-002 Assembly kit:
- Sampling probe
- Sealing gasket, two screws, two washers
- Cable assembly
83104511-001 Zero calibration service bag (calibration gas (at 0 ppm CO2) generator)
IMPORTANT:
In a system where fresh air is continuously required or more fresh air than normal is required due to hard work
intensity, it is dangerous to control fresh air (outdoor air) intake. Do not control fresh air (outdoor air) intake
using this product and other CO2measuring instruments in such systems.

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Safety Instructions
Please read instructions carefully and use the product as specified in this manual. Be sure to keep this manual nearby for quick
reference.
Restrictions on Use
This product is targeted for general air conditioning. Do not use this product in a situation where human life may be affected. If
this product is used in a clean room or a place where reliability or control accuracy is particularly required, please contact our
sales representative. Azbil Corporation will not bear any responsibility for the results produced by the operators.
Warnings and Cautions
WARNING Alerts users that improper handling may cause death or serious injury.
CAUTION Alerts users that improper handling may cause minor injury or material loss.
Signs
Alerts users possible hazardous conditions caused by erroneous operation or erroneous use. The symbol inside 
indicates the specific type of danger.
(For example, the sign on the left warns of the risk of electric shock.)
Notifies users that specific actions are prohibited to prevent possible danger. The symbol inside graphically
indicates the prohibited action.
(For example, the sign on the left notifies that disassembly is prohibited.)
Instructs users to carry out a specific obligatory action to prevent possible danger. The symbol inside graphically
indicates the actual action to be carried out.
(For example, the sign on the left indicates general instructions.)
CAUTION
Use the product under the operating conditions (temperature, humidity, power, vibration, shock, mounting direction,
atmospheric condition, etc.) as listed in the specifications.
Failure to do so might cause fire or device failure.
Use the product within the rated operating ranges as listed in the specifications.
Failure to do so might cause device failure.
Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.
All wiring must comply with applicable codes and ordinances.
Before wiring, be sure to turn off the power to the product.
Be sure to provide a circuit breaker for the power to the product as the product does not have a power switch.
Do not disassemble the product.
Doing so might cause device failure.
Dispose of this product as industrial waste in accordance with your local regulations. Do not reuse all or a part of this
product.

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Specifications
Item Specification
Power 24 V AC +10 %, -15 % (at 50 Hz to 60 Hz)
Consumption power Max. 3 VA
Output signal 1 V DC to 5 V DC (Linear to 0–2000 ppm CO2concentration)
Allowable load resistance Min. 5 kΩ
Measuring range 0 ppm to 2000 ppm CO2concentration
Operating principle Non-dispersive infrared (NDIR)
Accuracy 50 ppm

5 % of reading
D/A conversion accuracy: 2 % of reading 20 mV
D/A resolution: 10 mV
Drift Continuous ON 150 ppm/year (at 1000 ppm)
Continuous OFF (reference) 15 ppm/48 hours for 50 %RH
Time constant 0.6 m/s air velocity Max. 3 min
Environmental
conditions
Operating conditions CO2concentration: 0 ppm to 2000 ppm
Temperature: 0 °C to 50 °C
Humidity: 0 %RH to 85 %RH (non-condensing)
Wind velocity More than 0.6 m/s
Transport/storage
conditions
Temperature: -20 °C to 50 °C
Humidity: 0 %RH to 95 %RH (in unopened package)
Vibration resistance 4.9 m/s2(at 10 Hz to 150 Hz)
Insulation resistance Min. 100 MΩat 500 V DC (between case and each lead wire)
Dielectric strength Max 1 mA leakage current at 500 V AC for 1 minute (between bobbin and each lead wire)
Protection class IP65 (dust-proof and splash-proof) for the sensor
Materials Sensor and sampling probe: PC-ABS plastic
Lid: PC plastic
Color Sensor and sampling probe: Black
Lid: Transparent
Weight Approximately 0.35 kg
Installation Indoor duct, chamber
Initial warm-up time Continuously unpowered sensor for 48 hours or over: Approximately 10 days
(Product which has just been unpacked is exceptional.)
Other than the above: Approximately 3 days
Wiring Power Two-wire
CO2concentration output Two-wire
ABS: Acrylonitrile butadiene styrene
CE Marking Conformity
This product complies with the following Electromagnetic Compatibility (EMC).
EMC: EN61326-1 Class B, Table 1 (For use in a basic electromagnetic environment)

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Dimensions
Sensor and sampling probe assembled
Note: Total length of the cable, attached to the printed circuit board in the product, is 1 m.
Figure 1. Dimensions (mm): Sensor and sampling probe assembled
Assembly kit
Sampling probe
Figure 2. Dimensions (mm): Sampling probe
Cable assembly
UP
56
5.5
⌀2
55
66
28 28
⌀4
⌀25
⌀4
: Indication for mounting orientation
9.69.6
23.9
150
84.7 55.7
44.5
203 40.9 47
2.5
151.8
92.4
⌀24.4
⌀6
Sampling probe
(included in the assembly kit)
Sensor
Figure 3. Dimensions (mm): Cable assembly

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Installation
Precautions for installation
●Installation environment
Although the sensor’s enclosure conforms to IEC IP65 for dust-proof and splash-proof, avoid installing in locations exposed
to corrosive atmosphere or direct sunlight.
IEC: International Electrotechnical Commission
●Handling of the sensor
Annual drift of the continuously powered sensor is ±150 ppm.
The sensor is packaged in a tightly sealed aluminum moisture-proof bag for shipment. This prevents large output drift that
may be caused from moisture absorption of the unpowered sensor. Table 1 shows the output drift (reference) of the
unpowered sensor.
Table 1. Output drift of sensor unit without power supply
Hours without power supply Humidity
30 %RH 50 %RH 80 %RH
To 6 hours < ±10 ppm < ±10 ppm < ±10 ppm
To 12 hours < ±15 ppm
To 24 hours
To 48 hours < ±15 ppm < ±25 ppm
IMPORTANT:
The sensor is packaged for shipment after inspection and calibration. To minimize the output drift after the
installation, unpack and install the sensor just before turning on the power (approximately 48 hours or shorter
time before the power is turned on).
If the sensor continuously unpowered (for 48 hours or over) since it is unpacked or since it is turned off, be sure
to execute the zero calibration (explained later) after the power is turned on.
CAUTION
Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.
All wiring must comply with applicable codes and ordinances.
Before wiring, be sure to turn off the power to the product.
Be sure to provide a circuit breaker for the power to the product as the product does not have a power switch.
Precautions for assembling the sensor with the assembly kit
The assembly kit (sampling probe and cable assembly) and the sensor must be ordered and mounted separately to minimize
the drift (shown in the above Precautions for installation section.) caused by the unpackaged sensor being left without power.
If it takes more than 48 hours for the sensor to be installed before being powered, mount the sampling probe and connect the
cable assembly first, and then unpack, install, and wire the sensor just before supplying the power.

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Installation of the assembly kit
Sampling probe: Mount the sampling probe before assembling the sensor with the sampling probe.
1) Select a the probe mounting position where the typical CO2 concentration of process fluid can be measured and where the
specified air velocity can be acquired.
2) Drill a ⌀25 mm hole for mounting the sampling probe and two ⌀4 mm holes for the screws, as shown in Fig. 2.
3) Provide the sealing gasket between the probe and the duct/chamber surface, and insert the probe so that the whole probe
is inserted inside the duct/chamber and is exposed to the process fluid.
4) Set the sampling probe so that the process fluid flows perpendicularly to the probe, as shown in Fig. 4.
(There is no requirement for flow direction.)
5) Check the mounting orientation. ‘UP’ mark on the sampling probe (shown in Fig. 2) must be positioned on the upper side.
Then, fix the sampling probe with M4 screws and washers (two for each) on the both bilateral sides.
Figure 4. Mounting the sampling probe
Cable assembly: Following is an example of the cable assembly connection in a round outlet box (conforming to JIS C8340).
JIS: Japanese Industrial Standard
1) Select an outlet box with entries large enough (⌀25 mm or larger) for the connector of the sensor cable.
2) Lead the cable from the controller into the outlet box through an entry.
3) Splice the cable with the cable assembly, as shown in Fig. 5.
Note that the sensor cable will be connected to the cable assembly just before the power to the sensor is turned on.
Figure 5. Cable connection example: Splicing the cable assembly
Flow direction
M4 screw
Washer
"UP" indication must be positioned
on the upper part.
Round outlet box
with two entries
Cable from
controller
Cable assembly
Entry
Lead the sensor cable
through this entry (Min. ⌀25
mm) to connect to the cable
assembly.
Cable assembly
Splice.

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Installation of the sensor
The sensor is easily assembled with the sampling probe by snap-in bayonet mount. Refer to the following steps.
1) Engage the notches of the sensor with the locking knobs of the sampling probe, then lightly press the sensor.
Figure 6. Assembling the sensor with the sampling probe (1)
2) Turn the sensor clockwise until it stops, as shown in Fig. 7.
Figure 7. Assembling the sensor with the sampling probe (2)
3) Lead the sensor cable through the entry of the round outlet box, and connect the connector of the sensor cable to the
connector of the cable assembly, which has been already connected to the cable from the controller.
Figure 8. Cable connection example: Connecting the sensor cable
Locking knob
Engage.
Turn.
Cable from
controller
Round outlet box
with 2 entries
Lead through entry.
Cable from
senso
r
Connect.
Cable assemblyEntry

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Wiring
CAUTION
Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.
All wiring must comply with applicable codes and ordinances.
Before wiring, be sure to turn off the power to the product.
Be sure to provide a circuit breaker for the power to the product as the product does not have a power switch.
IMPORTANT:
●Do not supply the power other than 24 V AC to this product. Failure to do so might damage the product.
●Use isolated transformer to supply the power to this product.
Since the common wiring terminals (of green and white wire terminals) are internally connected, single product
must be powered by a single 24 V AC transformer. If the multiple products or this product and a device in
connection are powered by a single 24 V AC transformer, the common wiring will form a loop, and the product
will get damaged.
●See Table 2 for correctly connecting the wires. Miss connection will cause short-circuit of the power supply and
will damage the product.
Table 2. Lead wire description
Lead wire color Description Note
Brown 24 V AC power —
White 24 V AC power (common) Internally connected
Green (-) output (common)
Yellow (+) output —
Common
wiring
Wiring example:
Multiple products powered by a single transformer
+


24 V AC
Multi-loop
controller
Duct CO2sensor
-

+
+
+
- 
Bad wiring
Common wiring forms a loop.
Duct CO2sensor
Figure 9. Bad wiring example
Wiring example:
Multiple products powered by multiple transformers
Good wiring
24 V AC
Multi-loop
controller
24 V AC
+
+
-

+
+
-

Common wiring does not form a loop.
Figure 10. Good wiring example
Duct CO2sensor
Duct CO2sensor

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Operation
Operation check
1) Remove the lid from the sensor and blow your breath on the sensor from approximately 10 cm away from the sensor.
2) Check that the CO2concentration displayed on the sensor LCD and the output voltage quickly rise.
LCD: Liquid crystal display
LCD indication
On the sensor LCD, CO2concentration is continuously displayed. When an error occurred in the product, the tool icon appears
on the LCD, as shown in Fig. 13.
LED indication (yellow)
Table 3. LED indication
Operating status LED operation
Normal OFF
Initializing Flashing
Zero calibration
Error ON
LED: Light-emitting diode
Maintenance
Cleaning
Since process fluid flows into the sensor, clean the circuit board inside the sensor approximately once a year.
Zero calibration
Annual drift of the continuously powered sensor is ±150 ppm. Be sure to execute the zero calibration once a year.
IMPORTANT:
●As mentioned in the Installation section, the long-term unpowered sensor may cause drift shown in Table 1.
In such a case, the zero calibration must be executed after the sensor is powered again.
●Approximately 10 days are needed for the long-term unpowered sensor to stabilize its output. Calibrate the
sensor in 10 days approximately after the sensor is turned on.
For the sensor calibration, zero calibration service bag (Part No. 83104511-001) is needed. Refer to the following and execute
the zero calibration.
1) Remove the lid from the sensor.
2) Remove the plastic tube attached to the rear surface of the lid, and insert the tube into one of the calibration gas inlets of the
sensor. Note that either of the inlets can be used for the zero calibration.
Figure 11. Rear surface of the lid
3) Connect the tubing of the zero calibration service bag to the plastic tube. Securely connect the tubing to prevent gas
leakage.
4) Turn on the switch of the zero calibration service bag to purge the calibration gas (at 0 ppm CO2) to the sensor.
5) Keep purging the gas until the measured values become stable (for approximately five minutes).
Plastic tube
(attached to the rear surface of the lid)

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6) When the values become stable, press and hold the zero calibration button (shown in Fig. 12) of the sensor for
approximately three seconds to activate the zero calibration.
7) Check that the yellow LED flashes. It flashes four times (approximately for ten seconds) when the calibration is executed,
and turns off when the calibration is successfully finished.
8) Disconnect the tubing of the zero calibration service bag from the plastic tube.
9) Remove the plastic tube from the calibration gas inlet of the sensor and attach the plastic tube back to the rear surface of the
lid in order not to lose the plastic tube. Then, attach the lid to the sensor.
Note:
* Refer to AB-5803 Specifications/Instructions: Zero Calibration Service Bag for handling the zero calibration service bag.
Figure 12. Layout of zero calibration button and the calibration gas inlets
Error indication
This product contains self-diagnostic function. Self-diagnosis is executed automatically every time the power is turned on and
during normal operation. If an error is detected, the yellow LED is turned on, and the tool icon appears on the LCD to indicate the
error. Contact our salesperson if an error is detected.
Figure 13. Tool icon on the LCD
Jumper
(Do not touch the jumper.)
Zero calibration button
Calibration gas inlets