Description of the signal inputs/outputs
37
Calculating the output currents
The entire current range ( 0
– 20 mA or 4 – 20 mA ) is available for
one measuring point. The current range is divided for two measuring
points. The value of measuring point 1 is displayed in the lower half (
0
– 10 mA or 4 – 12 mA ), and the value of measuring point 2 is dis-
played in the upper half ( 10
– 20 mA or 12 – 20 mA ).
Measured value
Current =
x 20 mA
Maximum value
Measured value
Current =
x 16 mA +4 mA
Maximum value
Measured value 1
Current 1 =
x 10 mA
Maximum value
Measured value 2
Current 2 =
x 10 mA +10 mA
Maximum value
Measured value 1
Current 1 =
x 8 mA +4 mA
Maximum value
Measured value 2
Current 2 =
x 8 mA + 12 mA
Maximum value
The current is set to 20 mA.
Measured value = Value displayed in the selected unit
Maximum value = Final value of the measuring range (1.0 mg/l)
Serial interface RS232
Testomat 2000
®
Fe can also be connected to a log printer via the
serial interface RS232 to enable the printout of measuring results and
error messages. Analyses can then be continuously logged. This
option is only possible in connection with the interface card RS232,
RS910 (Art. no. 270310).
In the
menu, select
=>
=>
Select the desired interface
Press "ENTER" to confirm the selection
▼▲
1 measuring point
0 - 20 mA
1 measuring point
4 - 20 mA
Measuring range ex-
ceeded (e.g. >1- 0 mg/l)
How is the current
calculated for a
specific measured
value?
2 measuring points
0 - 20 mA
2 measuring points
4 - 20 mA