wtw LF 320 - Page 36

Technical data Technical data
36
BA52207/03.95/Pap/LF320-SET-1
BA52207/03.95/Pap/LF320-SET-1
37
Salinity
Range:
Resolution:
Accuracy:
0.0 ... 70.0
0.1
after adjustment (via cell constant) to 35.0:
Ÿ ± 0.1 in the range 0.0 ... 42.0 at test sample
temperature 5 ... 25°C
Ÿ
±
0.2 in the range of 0.0 ... 42.0 at test sample
temperature 0 ... 5°C resp. 25 ... 30°C
Ÿ better than 3 % of meas. value in the range
42.0 ... 70.0
TDS
Range:
Resolution:
Accuracy:
0 ... 1999 mg/l
1 mg/l
± 2 % ± 1 digit at test sample temperature
15°C ... 35°C.
Factor adjustable between 0.40 ... 1.00.
Temperature
Range:
Resolution:
Accuracy:
-5 ... 99.9°C
0.1 K
0.1 K
± 1 digit at operating temperature
-10°C ... +55°C
Data storage Ring memory
Number of values: 50 pairs
Output: Display
Data protection: any long
Display WTW-specific LCD-display
Height: 35 mm
Width: 60 mm
Keyboard Field with 9 keys
Inputs 8-pin WTW-plug
Environmental conditions
Ambient temperature
Relative humidity
Operation: - 10°C ... + 55°C
Storage: - 25°C ... + 65°C
Yearly mean: < 80 %
30 days/year: < 100 %
Remaining days: < 90 %
EMC
Interference transmission
Disturbance
Technical fundamental standard EN 50081-1
FCC class A
Technical fundamental standard EN 50082-2
Namur recommendation (standard requirements)
Power supply 4 x 1.5 V non rechargeable batteries, Typ AA
Operation time
500 - 2500 operating hours with alkali/manganese
batteries.
*
Energy reduction by automatic switch-off after approx. 1 h.
Data storage in case of battery exchange
Settings and meas. values remain stored,
Operation mode at beginning: conductivity measurement.
Housing
Dimensions / Weight 172 x 80 x 37 mm / approx. 0.3 kg
Instrument security
Protection class
Protection system
IEC 1010 / class 3
IEC 529 / IP 66
*
: acc. to conductivity range.