Technical specifications
ecoTurb-40 | ecoTurb-W40 | |
|---|---|---|
Application | Drinking water, groundwater and surface water | |
Measurement technology - Light source | IR LED 860 nm, FWHM* 30 nm | White light LED (color temperature between 2200-3000 °K) |
Measurement technology - detector | IR photodiode with a spectral peak response at 860 nm | Photodiode with a spectral peak response betw. 400 and 600 nm |
Measurement principle | Nephelometry | |
Parameters | Turbidity in FNU or NTU | Turbidity in NTU |
Applied standard | DIN EN ISO 7027-1:2016-11 | EPA Method 180.1 (Aug. 1993) |
*Full Width at Half Maximum (= half value width)
ecoTurb-40 | ecoTurb-W40 | |
|---|---|---|
Measurement range | 0-40 FNU | 0-40 NTU |
Measuring accuracy | ± (5 % + 0.01) FNU | ± (5 % + 0.01) NTU |
Resolution | 0.002 FNU | 0.002 NTU |
Sensitivity | 0.005 FNU | 0.005 NTU |
Repeatability | ± (0.5 % + detection limit) | ± (0.5 % + detection limit) |
Detection limit | 0.015 FNU* | 0.03 NTU* |
*A detection limit of 0.01 can be achieved by performing a post-offset calibration on the controller.
ecoTurb-40 | ecoTurb-W40 | ||
|---|---|---|---|
Linearity / coefficient of variation | ≤ 0,53 % | ≤ 0,53 % | |
Measurement deviation | ≤ (2 % of the measured value + detection limit) | ≤ (3 % of the measured value + detection limit) | |
Reproducibility | ≤ (1 % of the measured value + detection limit)* | ≤ (1 % of the measured value + detection limit)* | |
Response time (T90) | Sensor | 20 s (only for the sensor) | |
Complete system | 90 s at a flow rate of 10 L/h | ||
Warm-up time | 60 s | ||
*when measuring with several devices of the same type using the same procedure in the same laboratory by the same operator with the same equipment and reagents
ecoTurb-40 | ecoTurb-W40 | |
|---|---|---|
Data logger | no | |
Reaction time | 20 s | |
Smallest measurement interval | 3,1 s | |
Cross sensitivities | Finely dispersed air bubbles | Colored solutions, finely dispersed air bubbles |
Interface - digital | RS-485 (Modbus RTU) |
|---|---|
Interface - analog | - |
Power supply | 12 – 24 VDC (± 10 %) |
Power consumption | Typical ≤ 0.6 W; standby: ≤ 0.5 W |
Connection | M12 industrial plug, 8-pin |
Housing material | Flow cell | POM / NBR | |
|---|---|---|---|
Sensor | Aluminum / POM / PET / quartz glass | ||
Dimensions (W/H/D) | 108 x 154 x 99 mm | ~ 4.3 x 6.0 x 3.9 " | |
Weight | approx. 1.8 kg | ~ 3.97 lbs | |
Temperature | Sample (insitu) 0...40 °C | ~ 32...104 °F |
|---|---|---|
Ambient temperature | 0...40 °C | ~ 32...104 °F |
Min. internal pressure | 0.2 bar | ~ 2.9 psi |
Max. Internal pressure | 1 bar | ~ 14.5 psi |
Flow rate | Min. 6 L/h (0.1 L/min) | |
|---|---|---|
Recommended 30 L/h (0.5 L/min) | ||
Max. 1200 L/h (20 L/min) | ||
Internal volume | Approx. 120 mL | |
Transport conditions | 0...80 °C | ~ 32...176 °F |
Storage conditions | 0...80 °C | ~ 32...176 °F |
Degree of protection | IP65 | |
Maintenance effort | Depending on the water quality, typically < 0.5 h / month |
|---|---|
Calibration/maintenance interval | Depending on the water quality (typically every 12 months), regular cleaning depending on the water quality |
System compatibility | Modbus RTU |
Warranty | 1 year (EU & USA: 2 years) |