BM 70 M
41
Function I (Fct 3.3.1)
CONVERSION
Range I (Fct. 3.3.2)
4 - 20 mA
Scaling 4 mA (Fct. 3.3.3)
0.00 m
3
, corresponds to 4 mA
Current output I
Scaling 20 mA (Fct. 3.3.4)
16.80 m
3
, corresponds to
20 mA
Function S (Fct. 3.6.1)
LEVEL
Type S (Fct. 3.6.2)
LOW (=if level drops below
threshold)
Threshold(Fct. 3.6.3)
5.00 m
Switching output
Hysteresis (Fct. 3.6.4)
0.10 m
Function, display (Fct. 3.2.1)
CONVERSION
Display
Unit, conversion (Fct. 3.2.2)
m
3
(cubic meter)
8.6
Description of functions
8.6.1 Choice of units
Level/distance units
Select under Fct. 3.1.1 TANKHEIGHT
•
m
•
cm
•
mm
•
inch
•
Ft
The unit selected here is also valid for the following functions:
Block distance
Fct. 3.1.2
Antenna extension
Fct. 3.1.4
Scaling 4 mA value, current output
Fct. 3.3.3
Scaling 20 mA value, current output
Fct. 3.3.4
Range for partial tank bottom tracing
Fct. 3.5.2
Threshold (limit value), switching output
Fct. 3.6.3
Hysteresis, switching output
Fct. 3.6.4
Tracking speed,
Fct. 3.5.4
(in m/min when Fct.3.1.1 = m, cm or mm
or in ft/min when Fct.3.1.1 = inch or ft)
The Fct. 3.2.2 (length unit for display) can be set independently of the unit selected under Fct.
3.1.1.
Conversion units
By conversion is meant the transposition of an arbitrary level value into a "conversion value"
(usually volume), so as, for example, to realise a non-linear function as a factor of the level.
Options under Fct. 3.2.3 UNIT.CONV.
•
m³
•
l ( = litres)
•
US Gal
•
GB Gal (Gal = gallons)
•
Ft3
•
bbl (petroleum barrels)
Summary of Contents for BM 70 M Series
Page 75: ...BM 70 M 75 10 Certificates and approvals 10 1 Declaration of Conformity...
Page 83: ...BM 70 M 83 Annex C Spare parts...
Page 84: ...84 BM 70 M...
Page 85: ...BM 70 M 85...
Page 102: ...16 BM 70M EEx BM 70Mi EEx 11 Approvals...
Page 103: ...BM 70M EEx BM 70Mi EEx 17...
Page 104: ...18 BM 70M EEx BM 70Mi EEx...
Page 105: ...BM 70M EEx BM 70Mi EEx 19...
Page 106: ...20 BM 70M EEx BM 70Mi EEx...
Page 107: ...BM 70M EEx BM 70Mi EEx 21...
Page 108: ...22 BM 70M EEx BM 70Mi EEx...
