Dwyer | Series CDTV | Instruction manual | Dwyer Series CDTV Instruction Manual

Dwyer Series CDTV Instruction Manual
Bulletin AQ-CDTV-D
®
Series CDTV Duct Mount Carbon Dioxide / Volatile
Organic Compound Transmitter
Specifications - Installation and Operating Instructions
1/8˝
[3.17]
11-49/64˝
[298.85]
4-25/32˝
[121.44]
4-9/32˝
[108.74]
2-13/16˝
[71.44]
Ø1-15/64˝
[31.35]
Ø3-5/16˝
[84.14]
The Series CDTV Carbon Dioxide / Volatile Organic Compound (VOC) Transmitter
reduces energy cost in buildings by lowering the amount of conditioned air based on
the occupancy of the space. By detecting both CO2 and VOC, the transmitter can
also detect fumes that may need to be exhausted during lower occupancy periods.
Combining both measurements in one transmitter reduces both labor and material
costs by only having to install one CDTV-VOC unit, instead of separate CO2 and VOC
transmitters.
Carbon dioxide measurements are taken using our proven Single-Beam DualWavelength Non-Dispersive Infrared (NDIR) sensor. Our sensor allows users to get
accurate measurements without waiting for the settling / correction periods of other
logic based sensors. Transmitters can be used in buildings and applications that have
24 hour occupancy and can be calibrated on site to match environmental conditions
for improved accuracy.
The VOC measurement is a single value derived from the presence of substances
including alcohols, aldehydes, aliphatic hydrocarbons, amines, aromatic hydrocarbons,
CO, CH4, LPG, ketones, and organic acids. Although a standard unit of measure is
not currently defined, the VOC measurement unit “ppm CO2 equivalent” used by the
device is commonly used in the industry. The VOC measurement does not actually
measure CO2, but instead senses and indicates an air quality value that approximately
correlates perceived comfort levels to similar concentrations of CO2 in the environment.
Single-beam dual-wavelength sensor advantages:
• Automatically corrects for aging effects in occupied and unoccupied buildings
• Perfect for hospitals and manufacturing plants that are occupied 24 hours per
day
• Measures actual unfiltered light intensity directly
• Eliminates error from incorrect assumptions of gas concentration in theoretical
logic assumption methods
SPECIFICATIONS
Range: CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); VOC: 0 to 2000
ppm CO2 equivalent.
Accuracy: CO2: ±40 ppm +3% of reading.
Temperature Dependence: ±8 ppm / °C at 1100 ppm.
Non-Linearity: CO2: 16 ppm.
Pressure Dependence: CO2: 0.13% of reading per mm of Hg.
Response Time: CO2: 2 minutes for 99% step change; VOC: 5 minutes.
Temperature Limits: 32 to 122°F (0 to 50°C).
Power Requirements: 16 to 35 VDC / 19 to 28 VAC.
Power Consumption: Average: 2 watts; Peak: 3.75 watts.
Sensor: CO2: Single-beam, dual-wavelength NDIR; VOC: MEMS (metal oxide
semiconductor).
Output: Current: 0 to 20 mA, 4 to 20 mA, 0 to 10 mA, or 2 to 10 mA (depending on
selection jumper, max 500 Ω); Voltage: 0 to 10 VDC, 2 to 10 VDC, 0 to 5 VDC, or 1
to 5 VDC (depending on selection jumper, min 500 Ω); Relay: SPST NO 2A @ 30
VDC.
Weight: 5.6 oz (158.8 g).
Agency Approvals: CE.
INSTALLATION
WARNING
Disconnect power supply before installation to prevent electrical
shock and equipment damage.
Make sure all connections are in accordance with the job wiring diagram and in
accordance with national and local electrical codes. Use copper conductors only.
CAUTION
Use electrostatic discharge precautions (e.g., use of wrist straps)
during installation and wiring to prevent equipment damage.
CAUTION
Avoid locations where severe shock or vibration, excessive
moisture or corrosive fumes are present.
CAUTION
Do not exceed ratings of this device. Permanent damage not
covered by warranty may result.
Upon powering the transmitter, the firmware version will flash on
the display. A warm up period of 30 minutes is required for the
transmitter to adjust to the current CO2 concentration.
NOTICE
NOTICE
days.
Self calibration feature of the transmitter requires exposure to
normal outdoor equivalent carbon dioxide level once every thirty
LEED® is a registered trademark of the U.S. Green Building Council.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219/879-8000
www.dwyer-inst.com
Fax: 219/872-9057
e-mail: info@dwyermail.com
MOUNTING
1. Cut hole into duct large enough to insert probe.
2. Attach housing ears to duct using the two self-tapping screws provided.
3. Knock out an opening in the housing and attach an electrical fitting to route electrical wiring. PG11 & PG16 knockouts are molded into the housing.
WIRING
Use maximum 18 AWG wire for wiring to terminals. Refer to Figure 4 for wiring
information.
ENTER PUSH BUTTON
UP PUSH BUTTON
Current / Voltage Outputs
The transmitter may be wired for current or voltage output for both carbon dioxide and
VOC. The transmitter can be powered with either 16 or 35 VDC or 19 to 28 VAC. Wire
the transmitter according to Figure 4.
Optional relay can be used as either a dry contact or low voltage
switched circuit up to 2 A at 30 VDC.
NOTICE
POWER
VOC
RECEIVER
SUPPLY
CO2
REMOTE DISPLAY
CONNECTOR
RECEIVER
DOWN PUSH
BUTTON
CONFIGURATION
SWITCHES
RELAY
CONTACT
TERMINAL
BLOCK
PASSIVE
TEMPERATURE
SENSOR
Figure 1: Diagram of circuit board
Figure 4: Active output wiring diagram
Selection of Current and Voltage Outputs
Prior to wiring, verify that the current/voltage configuration switches (positions 1 and 2)
are set to the desired output type. Refer to Figure 1 to locate the configuration switches.
See Figure 2 for diagram of the current/voltage selection switches. For voltage output
selection, the output can be 0 to 10 VDC, 0 to 5 VDC, 2 to 10 VDC or 1 to 5 VDC. See
Figure 3 for the type of voltage output selection switches (positions 3 & 4).
Thermistor and RTD Outputs
Thermistor and RTD passive outputs are located on terminals 7 and 8 and do not
require any power. Passive temperature outputs are not polarity sensitive.
Remote Display
Remote display Model A-449 can be used to display the VOC or carbon dioxide. The
mini USB plug of the remote display plugs into the receptor on the side of the housing.
After a short warm up time, the display will begin to show the VOC or carbon dioxide
measurements.
ACCESSING MENU PARAMETERS
VOLTAGE
CURRENT
CO2 CONCENTRATION
OUTPUT SELECTION
VOLTAGE
CURRENT
VOC OUTPUT SELECTION
Step 1:To enter the menu structure, press
and
seconds (display will show RON parameter).
Step 2:Press
or
simultaneously for 5
to cycle between menu items.
Step 3:Press
to edit the value for the displayed menu item (SET will appear
on display).
Figure 2: Current/Voltage Output
Selection Jumper (PJ1 and PJ2)
Step 4:Press
or
to adjust the value of the menu item.
Step 5:Press
to save the changes (SET will disappear).
Step 6:Repeat Steps 2 through 5 for each of the parameters.
0-10 V
0-20 mA
2-10 V
4-20 mA
0-5 V
0-10 mA
Figure 3: Output range selection jumper
1-5 V
2-10 mA
Step 7:To exit the menu at any time, press and hold
and
simultaneously for 5 seconds or wait 10 seconds without pushing any buttons.
During the initial 5 minute warm-up phase, the VOC reading will be 0 ppm or an
indeterminate value. After warming up, the device is operational and note the VOC
output level will be approximately 450 PPM. If the device outputs 0 ppm after the
warm-up, there is either an operational error or a disconnected sensor error and
customer service should be contacted.
Note: Reference menu descriptions for changing factory settings.
Menu Descriptions
ROCDefine which output relay will be configured.
CO2 default
VOC
Max CO2 / VOC
RONRelay set point
Sets the CO2 or VOC concentration which the optional relay is energized.
Low limit:
Factory setting:
High limit: 0 PPM
1000 PPM
2000 PPM (CO2 or VOC), 5000 PPM (only CO2)
ROF Relay off set point
Sets the CO2 or VOC concentration which the optional relay is de-energized.
Setting value lower than RON provides direct action for detecting high concentrations of CO2. Setting value higher than RON provides indirect
or
on the LCD
action for detecting low concentrations of CO2.
display will be lit to indicate when the relay is energized.
Low limit:
Factory setting:
High limit:
0 PPM
950 PPM
2000 PPM (CO2 or VOC), 5000 PPM (only CO2)
DSP Display configuration
Determines the LCD display configuration during normal operation. The
LCD display can indicate the CO2 concentration or VOC concentration.
C
V
CO2 concentration only
VOC only
UNIUnits selection
Temperature and barometric pressure values can be displayed in US
engineering units or SI engineering units. The factory default is to display
US engineering units.
US units
SI units
Hg for barometric pressure
hPa for barometric pressure
COLCO2 low output range
Sets the CO2 concentration for the lowest output (0 V, 1 V, 2 V, 0 mA, 2 mA,
4 mA).
Low limit:
Factory setting:
High limit:
0 PPM
0 PPM
2000 PPM (CO2 or VOC), 5000 PPM (only CO2)
COHCO2 high output range
Sets the CO2 concentration for the highest output (10 mA or 5 V, 20 mA or
10 V). When COH is set above COL, the transmitter is direct acting and the
output will increase with an increase in CO2 level. When COH is below
COL, the transmitter is reverse acting and the output will increase with a
decrease in CO2 level.
Low limit:
Factory setting:
High limit:
0 PPM
2000 PPM (CO2 or VOC), 5000 PPM (only CO2)
2000 PPM (CO2 or VOC), 5000 PPM (only CO2)
VOL
VOC low output range
Sets the VOC for the lowest output (0 V, 1 V, 2 V, 0 mA, 2 mA, 4 mA). To
configure output for 450 PPM equal 0V, set VOL to 450 PPM. Even if power
is lost the VOL setpoint will remain in memory.
Low limit:
Factory setting:
High limit:
0 PPM
0 PPM
2000 PPM CO2 equivalent
VOH VOC high output range
Sets the VOC level for the highest output (10 mA or 5 V, 20 mA or 10 V).
When VOH is set above VOL, the transmitter is direct acting and the output
will increase with an increase in VOC level. When VOH is below VOL, the
transmitter is reverse acting and the output will increase with a decrease in
VOC level.
Low limit:
Factory setting:
High limit:
450 PPM
2000 PPM CO2 equivalent
2000 PPM CO2 equivalent
BARBarometric pressure
Sets the typical barometric pressure for the location where the transmitter
is mounted. The factory setting is for standard pressure at sea level.
Adjusting the barometric pressure gives a more accurate measurement,
especially at higher elevations. Refer to the elevation charts in Figure 9 for
typical barometric pressures at a given elevation.
Low limit:
Factory setting:
High limit:
20.0 in Hg / 600 hPa
29.9 in Hg / 1013 hPa
32.0 in Hg / 1100 hPa
CALCalibration
Calibrates in carbon dioxide sensor to a known gas valve. Read calibration
instructions before using this feature. Hold
for 5 seconds.
CALIBRATING CO2 SENSOR
Step 1:
Slide probe into sealed calibration tube.
Step 2: Tighten screws to lock probe in place.
Step 3: Attach gas to the calibration tube.
Step 4:
Follow the steps in the accessing parameter section to access the
calibration parameter (CAL).
Step 5: Press the
button.
Step 6: Flow zero reference gas at 0.3 SLPM for 5 minutes.
Step 7: Press and hold the
button for 3 seconds.
Step 8:
Flow the full scale reference gas at 0.3 SLPM for 5 minutes.
Step 9:
Press and hold the
button for 3 seconds.
Step 10: Exit the parameter menu.
Step 11: Loosen screws to release probe.
Step 12: Remove probe from sealed calibration tube.
US Customary Units
ft
in Hg
0
29.92
400
29.50
800
29.10
1200
28.69
1600
28.29
2000
27.90
2400
27.51
2800
27.13
3200
26.76
3600
26.39
4000
26.02
4400
25.66
4800
25.30
5200
24.95
5600
24.60
6000
24.26
6400
23.93
6800
23.60
7200
23.27
7600
22.94
8000
22.63
8400
22.31
8800
22.00
9200
21.70
9600
21.40
10000
21.40
MAINTENANCE/REPAIR
Upon final installation of the Series CDTV, no routine maintenance is required. The
Series CDTV is not field serviceable and should be returned if repair is needed. Field
repair should not be attempted and may void warranty.
This symbol indicates waste electrical products should not be disposed
of with household waste. Please recycle where facilities exist. Check with
your Local Authority or retailer for recycling advice.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sales” in our catalog and on our website. Contact
customer service to return a Return Goods Authorization number before shipping the
product back for repair. Be sure to include a brief description of the problem plus any
additional application notes.
MODEL CHART
Series
Range
Configuration
CO2 Output
Temperature
Output
VOC Output
Options
CDTV -2 D 4 A 4 -RLY Example: CDTV-2D4A4-RLY
2
0 to 2000 ppm CO2 range
5
0 to 5000 ppm CO2 range
D
Duct
N
North American style wall mount
4
4 to 20 mA / 0 to (5 or 10) VDC
0
None
A
10 KΩ NTC thermistor type III
B
10 KΩ NTC thermistor type II
C
3 KΩ NTC thermistor
D
Pt100 Ω RTD
E
Pt1000 Ω RTD
F
20 KΩ NTC thermistor
4
4 to 20 mA / 0 to (5 or 10) VDC
RLY Relay
FC Factory calibration certificate
COC Certificate of calibration
LCD LCD display (wall only)
Figure 5: CDTV Model Chart
SI Units
m
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
hPa
1013
1002
990
979
968
957
946
935
924
914
904
893
883
873
863
853
844
834
824
815
806
797
787
779
770
761
Figure 6: Elevation Chart
RESISTANCE VS TEMPERATURE TABLE
Temperature Resistance Curves (in Ohms)
°C
°F
A
B
C
-55
-67.0 607800.00 963849.00 289154.70
-50
-58.0 441200.00 670166.00 201049.80
-45
-49.0 323600.00 471985.00 141595.50
-40
-40.0 239700.00 336479.00 100943.70
-35
-31.0 179200.00 242681.00 72804.30
-30
-22.0 135200.00 176974.00 53092.20
-25
-13.0 102900.00 130421.00 39126.30
-20
-4.0
78910.00 97081.00 29124.30
-15
5.0
61020.00 72957.00 21887.10
-10
14.0 47540.00 55329.00 16598.70
-5
23.0 37310.00 42327.00 12698.10
0
32.0 29490.00 32650.00 9795.00
5
41.0 23460.00 25392.00 7617.60
10
50.0 18780.00 19901.00 5970.30
15
59.0 15130.00 15712.00 4713.60
20
68.0 12260.00 12493.00 3747.90
25
77.0 10000.00 10000.00 3000.00
30
86.0 8194.00
8057.00
2417.10
35
95.0 6752.00
6531.00
1959.30
40
104.0 5592.00
5326.00
1597.80
45
113.0 4655.00
4368.00
1310.40
50
122.0 3893.00
3602.00
1080.60
55
131.0 3271.00
2986.00
895.80
60
140.0 2760.00
2488.00
746.40
65
149.0 2339.00
2083.00
624.90
70
158.0 1990.00
1752.00
525.60
75
167.0 1700.00
1480.00
444.00
80
176.0 1458.00
1255.00
376.50
85
185.0 1255.00
1070.00
321.00
90
194.0 1084.00
915.50
274.65
95
203.0 939.30
786.60
235.98
100 212.0 816.80
678.60
203.58
105 221.0 712.60
587.60
176.28
110 230.0 623.60
510.60
153.18
115 239.0 547.30
445.30
133.59
120 248.0 481.80
389.60
116.88
125 257.0 425.30
341.90
102.57
130 266.0 376.40
301.00
90.30
135 275.0 334.00
265.80
79.74
140 284.0 297.20
235.30
70.59
145 293.0 265.10
208.90
62.67
150 302.0 237.00
186.10
55.83
D
78.32
80.31
82.29
84.27
86.25
88.22
90.19
92.16
94.12
96.09
98.04
100.00
101.95
103.90
105.85
107.79
109.74
111.67
113.61
115.54
117.47
119.40
121.32
123.24
125.16
127.08
128.99
130.90
132.80
134.71
136.61
138.51
140.40
142.29
144.18
146.07
147.95
149.83
151.71
153.58
155.46
157.33
E
783.2
803.1
822.9
842.7
862.5
882.2
901.9
921.6
941.2
960.9
980.4
1000.0
1019.5
1039.0
1058.5
1077.9
1097.4
1116.7
1136.1
1155.4
1174.7
1194.0
1213.2
1232.4
1251.6
1270.8
1289.9
1309.0
1328.0
1347.1
1366.1
1385.1
1404.0
1422.9
1441.8
1460.7
1479.5
1498.3
1517.1
1535.8
1554.6
1573.3
F
2394000.00
1646200.00
1145800.00
806800.00
574400.00
413400.00
300400.00
220600.00
163500.00
122280.00
92240.00
70160.00
53780.00
41560.00
32340.00
25360.00
20000.00
15892.00
12704.00
10216.00
8264.00
6722.00
5498.00
4520.00
3734.00
3100.00
2586.00
2166.00
1822.60
1540.00
1306.40
1112.60
951.00
815.80
702.20
606.40
525.60
N/A
N/A
N/A
N/A
N/A
Figure 7: Resistance vs Temperature
©Copyright 2019 Dwyer Instruments, Inc.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Printed in U.S.A. 3419
FR# 444204-00 Rev. 3
Phone: 219/879-8000
www.dwyer-inst.com
Fax: 219/872-9057
e-mail: info@dwyermail.com
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