Measuring instrument D-R 290

Measurements

• Opacity
• Extinction

Measuring ranges

• Opacity

0 ... 20 to 0 ... 100 %

• Extinction

0 ... 0.1 to 0 ... 1.6

• Dust ¹⁾

0 ... 80 mg/m³ to 0 ... 4 000 mg/m³

Measuring principle

Transmission

Sample gas temperature

Above dew point up to 250 °C, optional up to 1 000 °C, depending on application

Sample gas pressure

-50 ... +20 hPa, optional higher

Duct diameter

1 ... 12 m, optional up to 18 m

Ambient temperature

-20  ... +50 °C, optional higher

Degree of protection

IP65, Ex optional

Measured value outputs

2 x 0/4 ... 20 mA, 500 ?
Manual or automatic measurement range switching
optional Modbus RTU, PROFIBUS DP

Digital outputs

6 programmable relay outputs, permissible load 48 V/0.5 A

Digital inputs

6 programmable isolated inputs

Accuracy

< 1 % of measuring range

Detection limit

0.75 % at extinction 0–0.1

Reference point drift

< 0.4 % of measuring range / month

Zero point drift

< 0.4 % of measuring range / month

Auxiliary power

95 ... 264 V AC, 47 ... 63 Hz, 30 VA

Dimensions (H x W x D) measuring head

363 x 185 x 398 mm

Weight

17 kg

Purge air supply

Purge air quantity

Approx. 80 m³/h

Auxiliary power

115/230 V AC, 50/60 Hz, 0.37/0.43 kW

Dimensions (H x W x D)

350 x 550 x 500 mm

Weight

12 kg

Degree of protection

IP55