Hach-Lange SURFACE SCATTER 7 sc Turbidimeter - Manual (Page 7)

5
Section 1 Specifications
Specifications are subject to change without notice
Range 0.01–9999.9 nephelometric turbidity units (NTU)
Accuracy
± 5% of reading or ± 0.1 NTU (whichever is greater) from 0.01 to 2000 NTU;
± 10% of reading from 2000 to 9999 NTU
Resolution (displayed) 0.01 NTU up to 999.99 NTU; 0.1 NTU from 1000.0 to 9999.9 NTU
Repeatability Better than ± 1.0% of reading or ± 0.04 NTU, whichever is greater for each range.
Response time Initial response in 45 seconds
Sample flow required 1.0 to 2.0 L/min (0.3 to 0.5 gal/min) (15 to 30 gal/hr)
Sensor storage
temperature
–20 to 80 °C (–4 to 140 °F); 95% relative humidity, non-condensing.
Operating temperature
sc100: 0 to 50 °C (32 to 122 °F) for one SS7 sc on an sc100; 0 to 40 °C (32 to 104 ° F) for one
SS7 sc and another smart sensor that consumes less than 5 watts on a single sc100
(provided by sc100). See
Figure 1 on page 6 .
sc1000: –20 to 55 °C (–4 to 131 °F); 95% relative humidity, non-condensing
Sample temperature range
0 to 50 °C (32–122 °F);
HST model—0 to 70 °C, intermittent 70 to 80 °C. (An approved heat exchanger is available to
reduce sample temperature.)
Operating humidity 5 to 95% non-condensing
Power requirements 12 VDC ±5%, 20 watts maximum (provides by sc100)
Sample inlet fitting ¾-in. NPT female
Overflow drain fitting 1-in. NPT female
Body drain fitting ¾-in. NPT female
AIr purge fitting ¼-in. quick-connect compression fitting; 0–50SCFH airflow of clean instrument air
Signal average (filter) time No averaging, 6, 30, 60 and 90 seconds, user selectable. Default is 30 seconds.
Sensor dimensions 64.2 x 67.5 x 19.0 cm (25.3 x 26.6 x 7.5 in.)
Sensor cable length 2 m (6.6 ft); Optional 7.62 m (25 ft) extension cable. Maximum cable length is 9.62 m (31.6 ft).
Sensor cable rating
Cable: 105 °C, 300 V, PVC jacket
Wires: 22 AWG, PVC jacket
Mounting options Wall
Shipping weight
SS7 sc—15.8 kg (34.8 lb);
SS7 sc-HST—18 kg (39.6 lb)
Calibration method Formazin – user-prepared primary or wet calibration of the instrument
Verification (dry) method
Standardization plates with approximate values of 100 or 1000 NTU. Unique value is assigned
when dry verification is done immediately after calibration and is used with pass/fail criteria for
subsequent verifications.
Recommended cleaning
intervals
Mandatory before calibration
Optional before verification
Mandatory upon verification failure
Languages
English (default), German, French, Spanish, Italian, Swedish, Polish, Korean,
Chinese, Japanese
Installation environment Indoor
Primary compliance
method
USEPA 180.1; Hach Method 8195; ASTM D 6698; Standard Methods 2130B