Technical Data

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Measuring principle:

Manometric; mercury-free; electronic pressure sensor

Measuring ranges [mg/l O2]:

0 - 40, 0 - 80, 0 - 200, 0 - 400, 0 - 800, 0 - 2000, 0 – 4000 mg/L
Accuracy* 0.5 % full scale at 20°C

Applications:

BOD5, BOD7, OECD 301 F ...

Result display:

BOD [mg/L]; 4 - digits; 7 - segment LED

Measurement parameter display:

BOD, volume, duration, time of measuring

Measurement period:

User-selectable, between 1 and 28 days

Automatic result memory:

Up to 28 results, depending on measurement period

Storage interval:

– hourly (1 day);
– every 2 hours (2 days);
– daily (3-28 days)

Automatic start function:

– After temperature equalisation of samples;
– Can be switched off

Power supply:

3 alkaline-manganese batteries ("Baby"/ cells/size "C")
Battery life: 1 year (normal use as BOD5 meter (max. one reading a day); early warning before battery fails
Interface RS232 for printer
or PC connection

Clock:

Real-time clock

Protection class (sensor head):

IP 54 (sensor head)
Dimensions:
(LxWxH)		 375 x 195 x 230 mm including stirring unit

Housing:

ABS

Approval certificate:

CE


*No standard is available to check the accuracy of respirometric oxygen uptake measurement. Tests with a glucose-glutamic acid solution having a known theoretical BOD have shown that the variation is approximately 5% in the range of 50…100 mg/l BOD, and 3% for higher range. Minimum Response or sensitivity of respirometric systems is about 0.05 … 1 mg/l.

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