Dwyer德威尔 二氧化碳浓度变送器/温度变送器 CDT-2D44 CDT-5W44

对于二氧化碳浓度和温度的输出方式都是现场可任意选择的4 to 20 mA, 0 to 5 VDC,

或者0 to 10 VDC，可适用于任何楼宇管理系统的控制器。另外温度输出方式还可以

订购热敏电阻输出或热电阻输出。可选的带可调设定点的开关输出能用于控制排风

扇，自动开窗，或控制风门，或声光报警。

如果在应用中需要带显示，墙装式可选择带有LCD指示。如果订购的墙装式和风管

安装式变送器不带现场指示，可以选购A-449远传指示器，直接插入变送器的连接口

就能现场显示，还可以设定为单独显示温度，或CO2，或温度和CO2同时显示。标

准配置中带有按键，可通过选择菜单来配置，墙装式可以订购为不带配置按键的产

品。为了安全保护变送器不被误操作，可选择内部的跳线开关屏蔽外部的按键。可

通过菜单配置的参数有：工程单位，开关输出的设定点值，显示方式，变送器输出

范围，环境大气压，和现场校准

Dwyer德威尔 二氧化碳浓度变送器/温度变送器 CDT-2D44 CDT-5W44

Range: CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); Temperature: 32 to 122°F (0 to 50°C).

Accuracy: CO2: ±40 ppm ±3% of reading; RH: ±2% (10 to 90% RH); Temperature: ±1°C @ 25°C.

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

Non-Linearity: 16 ppm.

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

Response Time: 2 min for 99% step change.

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);

Relay: SPST NO 2 A @ 30 VDC;

Weight: 4.4 oz (125 g).

Sensor: Single beam, dual-wavelength NDIR.

Agency Approvals: CE.

Duct Air Velocity Range: 0-4000 FPM (20.32 m/s).

Temperature: ±1°C @ 25°C.

Warranty: 5 year limited warranty.

Dwyer德威尔 二氧化碳浓度变送器/温度变送器 CDT-2D44 CDT-5W44

Range: CO2: 0 to 2000 or 0 to 5000 ppm (depending on model); Temperature: 32 to 122°F (0 to 50°C).

Accuracy: CO2: ±40 ppm ±3% of reading; RH: ±2% (10 to 90% RH); Temperature: ±1°C @ 25°C.

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

Non-Linearity: 16 ppm.

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

Response Time: 2 min for 99% step change.

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);

Relay: SPST NO 2 A @ 30 VDC;

Weight: 4.4 oz (125 g).

Sensor: Single beam, dual-wavelength NDIR.

Agency Approvals: CE.

Duct Air Velocity Range: 0-4000 FPM (20.32 m/s).

Temperature: ±1°C @ 25°C.

Warranty: 5 year limited warranty.