Description of the signal inputs/outputs
38
Calculation of output currents
The entire current range (0
– 20 mA or 4 – 20 mA) is available for
one measuring point. However, the current range is divided for two
measuring points. The value from measuring point 1 is displayed in
the lower half (0
– 10 mA or 4 – 12 mA) and the value for measuring
point 2 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 0 or 4 mA (for 1 measuring point)
The current is set to 20 mA.
Measured value = The value shown on the display in the selected
hardness unit
Maximum value = The end value of the applied indicator
(e.g. indicator 2005 = 0.5 °dH)
Serial interface RS232
Testomat 2000
®
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 RS-232 interface card for log
printer, RS910 (Art. no. 270310).
In
, select
=>
=>
Select the desired interface
Press "ENTER" to confirm the selection
1 measuring point
0 - 20 mA
1 measuring point
4 - 20 mA
2 measuring points
0 - 20 mA
2 measuring points
4 - 20 mA
Measuring range not
achieved (e.g. <0.05 °dH)
Measuring range
exceeded (e.g. >0.5 °dH)
How is the current
calculated for a
specific measured
value?
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Summary of Contents for Testomat 2000
Page 53: ...Technical data 53 Conformity Declaration ...
Page 57: ...57 ...
