User Manual User guide
Specifications
Specifications are subject to change without notice.
Specification Details
Measurement method Nephelometric
Regulatory Meets ISO 7027, DIN EN 27027, DIN 38404 and NFT
9033
ASTM D7315 - Standard Test Method for
Determination of Turbidity Above 1 Turbidity Unit
(TU) in Static Mode
ASTM D6655 - Standard Test Method for
Determination of Turbidity Below 5 NTU in Static
Mode
Light source Light-emitting diode (LED) at 860 ± 30 nm
Measurement modes FNU and NTU
Range FNU (manual range): 0–0.999, 0–9.99, 0–99.9, 0–
1000
FNU (auto range): 0–1000
NTU (manual range): 0–0.999, 0–9.99, 0–99.9, 0–
1000
NTU (auto range): 0–1000
Accuracy
1,
2
±2% of reading plus 0.01 FNU/NTU from 0–
1000 FNU/NTU
Resolution Turbidity: 0.001 FNU/NTU (on lowest range)
Repeatability ±1% of reading or 0.01 FNU, whichever is greater
(under reference conditions)
Response time Signal averaging off: 6.8 seconds
Signal averaging on: 14 seconds (when
10 measurements are used to calculate the average)
Stabilization time Immediately
Reading modes Manual or auto range, signal averaging on or off
Specification Details
Power requirement 115–230 VAC, 50/60 Hz (automatic power selection)
28 W maximum
Pollution
degree/installation
category
2; II
Protection Class 1
Operating conditions Temperature: 0 to 40 °C (32 to 104 °F)
Relative humidity: 0–90% at 25 °C, 0–75% at 40 °C,
noncondensing
Altitude: 2000 m (6560 ft) maximum
Indoor use only
Storage conditions –40 to 60 °C (–40 to 140 °F), instrument only
Interface RS232C serial interface by way of DB9 subminiature
D-shell connector for data output to computer or
printer, and data input (command). No handshaking.
Air purge Dry nitrogen or instrument grade air (ANSI MC 11.1,
1975)
0.1 scfm at 69 kPa (10 psig); 138 kPa (20 psig)
maximum
Hose barb connection for
1
/
8
-inch tubing
Sample cells Round cells 95 x 25 mm (3.74 x 1 in.) borosilicate
glass with rubber-lined screw caps
Note: Smaller sample cells (less than 25 mm) can be used
when a cell adapter is used.
Sample requirements 25 mm sample cell: 20 mL minimum
0 to 95 °C (32 to 203 °F)
Note: Refer to Use a cell adapter on page 27 for the
minimum sample size when not using a 25 mm sample cell.
Enclosure High-impact polycarbonate plastic
Dimensions 30.5 x 40 x 15.6 cm (12.0 x 15.7 x 6.1 in.)
English 5