7
3.5 Scale selection
Scale
Volume of sample
0 ÷ 90 mg O
2
/l
400 ml
0 ÷ 250 mg O
2
/l
250 ml
0 ÷ 600 mg O
2
/l
150 ml
0 ÷ 1000 mg O
2
/l
100 ml
0 ÷ 4000 mg O
2
/l
25ml
PRE
Refer to the method
The scale is related to the expected value. The possibility of measuring diluted samples extends the range
.
Results are shown as mg O
2
/l (ppm) for BOD test and values in mbar for PRE scale.
Wireless mode
Non-wireless mode (after the reset)
Before the analysis set the scale on the RESPIRO
Soft™
Key
SET
(display on)
The scale is changed
Key
SET
or
START
The scale is shown
3.6 Analysis duration and sampling time
Wireless mode
With RESPIROMETRIC Sensor an analysis can last from 5 to
120 days. The sampling time can be selected depending.
on the desired duration of the analysis, from 1 h to 2 days
Wireless mode
Before the analysis set the scale on the RESPIROSoft
™
3.7 Alarms
AL1
Calibration error. Restart the analysis. If the problem persists contact the service.
AL2
Analysis start denied. Check on RESPIROSoft
™.
AL3
Max. sensors q.ty reached. 50 analyses are already in progress. Wait the end.
AL5
No PC response. Check the distance between the RESPIROMETRIC Sensor
and the Wireless DataBox™.
AL8
Data sending failed. Restart the analysis. If the problem persists contact the service.
AL9/11
No PC response. Check if the RESPIROSoft
™ is active and if the Wireless DataBox™ connected.
bAt
Low battery (wireless mode OFF). Remove the batteries with the fingers and replace them with new ones paying
attention to the polarity indicated inside the instrument.
Err
Calibration error (wireless mode OFF).
4. Maintenance
RESPIROMETRIC Sensor warns about the required change of batteries when the unit is resetted and the charge is lower
than a minimum threshold. Use a coin lever in the rear part of RESPIROMETRIC Sensor and open it. Batteries are removed
using the fingers. Introduce two fresh batteries at the same time paying attention to the polarity. Battery replacement deletes
any stored value.
5. Technical data
Dimensions (WxHxD)
50x70x70 mm
Weight
80 g
Measurement
Electronic pressure probe
BOD values or pressure
Directly on the
RESPIROSoft
™,
at any time
Stored data
5 BOD values per sensor;
Database on RESPIROSoft
™
Display
4 LED digits, 7 mm high
Precision
± 1 digit (
±3.55 hPa) ± 1%
Operation range
500 ÷ 2000 mbar (h Pa)
Scales
90, 250, 600, 999 4000 ppm
BMP PRE
Power supply
2 lithium batteries (250 mAh)
Electrical input with display on 15 mA max.
Electrical input with display off 7,5 µA
Protection degree
IP 54-EN 60529
Admitted room temperature
Storing
–25
+65° C
Ope5
+40°C
6. Accessories / Spare parts
A00000135
BOD Sensor Check
A00000136
Control Test Tablets
10000904
Alkali container
Non-wireless mode
Respirometric Sensor will perform only 5-day test
with 24-hour sampling time for BOD analysis or
30 days using PRE scale.