Table of contents
Specifications on page 3 Standard operation on page 9
General information on page 4 Maintenance on page 14
User interface on page 7 Troubleshooting on page 17
Startup on page 9
Specifications
Specifications are subject to change without notice.
Specification Details
Measurement method Nephelometric
Regulatory Meets EPA Method 180.1
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 Tungsten filament lamp
Measurement modes NTU, NEPH (Nephelo) and EBC
Specification Details
Range NTU (Ratio on, manual range): 0–0.999, 0–9.99,
0–99.9, 0–4000
NTU (Ratio on, auto range): 0–4000 auto decimal
NTU (Ratio off): 0–40.0
Nephelo (Ratio on, manual range): 0–9.99, 0–99.9,
0–26,800
Nephelo (Ratio on, auto range): 0–26,800 auto
decimal
Nephelo (Ratio off): 0–268
EBC (Ratio on, manual range): 0–0.999, 0–9.99,
0–99.9, 0–980
EBC (Ratio on, auto range): 0–980 auto decimal
EBC (Ratio off): 0–9.8
Accuracy
1,
2
Ratio on: ±2% of reading plus 0.01 NTU from
0–1000 NTU, ±5% of reading from 1000–4000 NTU
based on formazin primary standard
Ratio off: ±2% of reading plus 0.01 NTU from
0–40 NTU (under reference conditions
3
)
Resolution Turbidity: 0.001 NTU/EBC, Nephelo (on lowest range)
Repeatability ±1% of reading or 0.01 NTU, 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 Ratio on: 30 minutes after start-up
Ratio off: 60 minutes after start-up
Reading modes Manual or auto range, signal averaging on or off,
Ratio on or off
Power requirement 115–230 VAC, 50/60 Hz (automatic power selection)
28 W maximum
English 3
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