Dwyer Instruments CDWP Series Installation and operating instructions

Series CDWP Carbon Dioxide Transmitter

Specications - Installation and Operating Instructions

Bulletin AQ-CDWP

The Series CDWP Carbon Dioxide Transmitter accurately monitors the CO2

concentration in industrial and indoor environments to help achieve energy savings.

For increased sensor life and accuracy, a single-beam dual-wavelength non-dispersive

infrared (NDIR) sensor is used to eliminate light source aging effects. The single-

beam dual-wavelength sensor technology provides the highest level of accuracy

compared to Automatic Baseline Correction methods, which can unintentionally shift

the calibration based on CO2levels and barometric pressure conditions.

Universal outputs allow users to select the transmitter output to be 4 to 20 mA, 0 to

5 VDC, or 0 to 10 VDC to work with virtually any building management controller or

programmable logic controller.

The CDWP utilizes a rugged IP54 aluminum housing with an exterior gray nish coat

that was tested to withstand a 168 hour salt spray corrosion test. This ruggedized

housing helps to protect the sensor from splashing liquid and airborne dust or debris

making the Series CDWP a great t for animal husbandry applications and conned

feeding operations.

Single-beam dual-wavelength sensor advantages:

• Automatically corrects for aging effects in occupied and unoccupied spaces

• Measures actual unltered light intensity directly

• Eliminates error from incorrect assumptions of gas concentration in theoretical

logic assumption methods

SPECIFICATIONS

Sensor: Single beam, dual-wavelength NDIR.

Range: CO2: 0 to 2000, 0 to 5000, or 0 to 10000 ppm (depending on model).

Accuracy: CO2: ±40 ppm ±3% of reading.

Temperature Dependence: ±8 ppm/°C at 1100 ppm.

Non-Linearity: 16 ppm.

Pressure Dependence: 0.13% of reading per mm of Hg.

Response Time: 300 s (t63).

Temperature Limits: 32 to 122°F (0 to 50°C).

Humidity Limits: 10 to 95% RH (non-condensing).

Power Requirements: 16 to 35 VDC or 19 to 28 VAC.

Power Consumption: Average: 2 W; Peak: 3.75 W.

Output: Current: 4 to 20 mA (max. 500 Ω); Voltage: 0 to 5 VDC or 0 to 10 VDC

(min. 500 Ω).

Enclosure Rating: IP54.

Mounting Orientation: Vertically, with electrical connection pointing downwards.

Weight: 26.24 oz (744 g).

Agency Approvals: CE.

(OPTIONAL

SUSPENSION

BRACKET)

4-11/32

[110.32] Ø1/4 [6.35]

2-1/32

[51.59]

4-13/16

[122.23]

6 [152.40]

5-5/32

[130.96]

1-27/32

[46.82]

1-6 MM OR 5-10 MM

CABLE GLAND

(OPTIONAL

4-6 MM OR 6-8MM

M12 CONNECTION)

4 X 3/4

[19.05]

8 X Ø3/16

[4.76]

11/16 [17.46]

2-5/16

[58.73]

MODEL CHART

Example CDWP -02 W-M4 -FC CDWP-02W-M4

Series CDWP Carbon dioxide transmitter

Range 02

2000 PPM

5000 PPM

10000 PPM

Mounting W

Wall mount

Suspended mount

Electrical

Connection

Cable gland 1 to 6 mm cable

Cable gland 5 to 10 mm cable

M12 connection 4 to 6 mm cable

M12 connection 6 to 8 mm cable

Option FC Factory calibration certicate

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

Phone: 219/879-8000

Fax: 219/872-9057

www.dwyer-inst.com

e-mail: [email protected]

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

Phone: 219/879-8000

Fax: 219/872-9057

www.dwyer-inst.com

e-mail: [email protected]

INSTALLATION

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.

SUSPENSION MOUNTING

To suspend the CDWP from the ceiling, loop the end of the power cord and feed it

through the hole at the base of the bracket and hook the loop on the prong.

M12 Connector Option

The M12 Connection option allows for easy removal of the CDWP before site cleaning

operations.

Power Supply

Choose a power supply with a voltage and current rating sufcient to meet the power

specications under all operating conditions. If the power supply is unregulated, make

sure the output voltage remains within the required voltage range under all power line

conditions.

CURRENT / VOLTAGE OUTPUTS

The transmitter may be wired for current or voltage output for CO2.

WIRING

Use a minimum of 22 AWG to maximum 18 AWG wire for wiring to terminal blocks.

Refer to Figure 3 for wiring Information.

DIP SWITCH SETTINGS

To access the DIP SWITCH, remove the cover of the unit as shown in

Figure 4. The DIP SWITCH is located on the circuit board.

DIP Switch Position 1: CO2 Output Selection

ON: Output set to voltage output

OFF: Output set to current output

DIP SWITCH POSITION 2: Not Used in this product

DIP SWITCH POSITION 3 & 4: Current or Voltage Output Range Selection

DIP SWITCH POSITIONS 5 & 6: Not used in this product

MAINTENANCE/REPAIR

Upon nal installation of the Series CDWP, no routine maintenance is required. The

Series CDWP is not eld serviceable and it is not possible to repair the unit. Field

repair should not be attempted and may void warranty.

WARRANTY/RETURN

Refer to “Terms and Conditions of Sale” in our catalog and on our website. Contact

customer service to receive 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.

Disconnect power supply before installation to prevent electrical

shock and equipment damage

WARNING

Use electrostatic discharge precautions (e.g., use of wrist straps)

during installation and wiring to prevent equipment damage.

Do not exceed ratings of this device, permanent damage not

covered by warranty may result.

Upon powering the transmitter, a warm up period of 30 minutes

is required for the transmitter to adjust to the current CO2

concentration.

NOTICE

Self calibration feature of the transmitter requires exposure to

normal outdoor equivalent CO2level once every 30 days.

NOTICE

Figure 1: CDWP Suspension Bracket

Figure 5: Diagram of DIP SWITCH

Figure 3: Active Output Wiring Diagram

Figure 4: Diagram of Circuit Board

Figure 2: Diagram of M12 Connector

Output Range DIP Switch 3 Position DIP Switch 4 Position

2 to 10 V

4 to 20 mA

ON OFF

0 to 10 V

0 to 20 mA

OFF OFF

0 to 5 V

0 to 10 mA

OFF ON

1 to 5 V

2 to 10 mA

ON ON

M12 CONNECTOR

FITS 4-6MM OR

6-8MM CABLE

CAUTION

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.

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