Dwyer Instruments CDWP Operating Manual

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 singlebeam dual-wavelength sensor technology provides the highest level of accuracy compared to Automatic Baseline Correction methods, which can unintentionally shift the calibration based on CO

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

2 levels and barometric pressure conditions.

(OPTIONAL

SUSPENSION

BRACKET)

11/16 [17.46]

8 X Ø3/16

[4.76]

4 X 3/4

[19.05]

SPECIFICATIONS

Sensor: Single beam, dual-wavelength NDIR.

Range: CO Accuracy: CO 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 (

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.

2: 0 to 2000, 0 to 5000, or 0 to 10000 ppm (depending on model).

2: ±40 ppm ±3% of reading.

4-11/32 [110.32]

6 [152.40]

t63).

Ø1/4 [6.35]

2-1/32 [51.59]

4-13/16 [122.23]

2-5/16

[58.73]

5-5/32

[130.96]

1-6 MM OR 5-10 MM

CABLE GLAND

(OPTIONAL

4-6 MM OR 6-8MM

M12 CONNECTION)

1-27/32

[46.82]

MODEL CHART Example CDWP -02 W -M4 -FC CDWP-02W-M4

Series CDWP Carbon dioxide transmitter

Range 02

Mounting W

Electrical

Connection

Option FC Factory calibration certicate

05 10

C1 C5 M4 M6

2000 PPM 5000 PPM 10000 PPM

Wall mount Suspended mount

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

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: info@dwyermail.com

INSTALLATION

Disconnect power supply before installation to prevent electrical

WARNING

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.

shock and equipment damage

WIRING

Use a minimum of 22 AWG to maximum 18 AWG wire for wiring to terminal blocks. Refer to Figure 3 for wiring Information.

CAUTION

NOTICE

concentration.

NOTICE

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.

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 CO

Self calibration feature of the transmitter requires exposure to normal outdoor equivalent CO

Figure 1: CDWP Suspension Bracket

2 level once every 30 days.

Figure 3: Active Output Wiring Diagram

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.

Figure 4: Diagram of Circuit Board

DIP Switch Position 1: CO

ON: Output set to voltage output OFF: Output set to current output

2 Output Selection

Figure 5: Diagram of DIP SWITCH

M12 Connector Option

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

M12 CONNECTOR FITS 4-6MM OR 6-8MM CABLE

Figure 2: Diagram of M12 Connector

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 CO

DIP SWITCH POSITION 2: Not Used in this product DIP SWITCH POSITION 3 & 4: Current or Voltage Output Range Selection

Output Range DIP Switch 3 Position DIP Switch 4 Position 2 to 10 V

4 to 20 mA 0 to 10 V

0 to 20 mA 0 to 5 V

0 to 10 mA 1 to 5 V

2 to 10 mA

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.

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