| Measuring Technique |
Double pass transmissometry |
| Operating Wavelength |
520 ± 20 nm |
| Light Source |
Pulsed High Intensity LED |
| Measurement Range |
Opacity 0-10 % to 0-100 % ; Optical Density 0 - 0.1 to 0-3.0 ; Dust Density 0-15 to 0-1000 mg/m3 (at 5 m pathlength) |
| Calibration Error |
1.5 % opacity |
| Drift (long term) |
< 0.3 % opacity / month |
| Thermal Stability |
0.6 % opacity / 22 ° C ambient change |
| Angle of Projection |
< 2 ° |
| Angle of View |
< 2 ° |
| Response Time |
≤10 s to 95 % |
| Averaging |
Selectable from 10 s to 24 hr (1 s increment) |
| Pathlength |
0.5 to 10 m / 20 in to 32 ft (extended pathlengths to 15 m available) |
| Calibration |
Automatic zero and upscale check (selectable period 1 to 24 hr in 1 hr increments) |
| Zero Correction |
Automatic correction for zero drift |
| Control Panel Display |
128 x 64 pixel reflective backlit LCD |
| Control Panel Keypad |
4 keys for data input |
| Control Panel Indicators |
Power, System OK, Alarm, Calibration |
| Operating Temperature |
-40 to 55 °C / -40 to 131 °F |
| Max. Flue Gas Temperature |
600 °C / 1112 °F |
| Max. Flange Temperature |
200 °C / 392 °F |
| Flue Gas Water Content |
Not sensitive to water vapor. Condensed water must not be present in the measurement path. |
| Electrical Safety |
IEC / EN 61010-2 |
| EMC |
EN 50 081 & EN50 082 |
| Sealing |
IP65 / NEMA4X |
| Modbus Interface |
RS485; Opacity, Optical Density, Dust Density and Status information available |
| Analog Outputs |
Isolated 4 to 20 mA Configurable as Opacity, Optical Density, Dust Density |
| Relay Outputs |
System OK, Calibration, Alarm |
| Relay Rating |
1 A @ 24 Vdc |
| Power Supply |
24 Vdc nominal (18 to 30 Vdc), 0.3 A nominal (3 A startup) |
| Transceiver Dimensions (Hx W x D) |
191 x 291 x 413 mm / 7.5 x 7.9 x 16.3 in |
| Retro-reflector Dimensions (H x W x D) |
101 x 201 x 237 mm / 7.5 x 7.9 x 9.3 in |
| Transceiver Weight |
6 kg / 13.2 lbs.
|
Retro-reflector Weight
|
3 kg / 6.6 lbs. |
| Enclosure |
Cast Aluminum, epoxy coated |
| Accessories |
Fail-safe Shutters, Blowers, Adapter Flanges, Remote Control Units, Additional Outputs Available |
| Approvals |
QAL 1, EN 15267, EN 13284-2 |
| Performance Specifications |
ASTM D6216, US EPA PS-1, PS-11, Procedure 3 |