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5
Technical Data
Number of measuring ranges
Max. 4, freely parameterizable
Switching ratio
Optional
Autoranging
Selectable
Hysteresis:
– Switchover to larger range at 90 % of span of
smaller range
– Switchover to smaller range at 80 % of span of
smaller range
Output signals
At terminal strips X1, X2 and X3.
A cable with a plug connector
(Order No. W79070-U1610-M25) can be connected
to these terminal strips
Analog
0/2/4 to 20 mA, max. resolution 0.1 %,
max. load 750
Ω
Digital
RS232 serial interface as V.24 or TTY (20 mA)
Programming facilities (for setting of
device-specific parameters using control panel) Oven and pump temperatures, limits, measuring
ranges, measured-value storage, time constant,
3-stage code for protection against unauthorized
and unintentional use etc.
Device output
Floating contacts for:
– Measure/calibrate
signal
– Ready/not ready signal
– 4 selectable limit relays, max. 24 V/1 A, freely
assignable to measuring ranges
– 4 contacts for range identification, max. 24 V/1 A
– Solenoid valve control, max. 24 V/1 A
Device input
4 floating contacts are required for range switching,
span calibration,
zero calibration,
autocal
Measured-value display
Digital concentration display (5 digits with floating
decimal point)
Resolution of digital display
0.1 % of measured value
Ripple of output signal
<0.5 % of 10 ppm C
1
with 5E-E
Noise
<0.5 % of 10 ppm C
3
with 5E-E
<0.5 % of 10 ppm C
3
with 5E-A and 5E-AS
<0.5 % of 10 ppm C
1
with 5E-I
Detection limit
0.1 ppm C
1
with 5E-E
0.1 ppm C
1
with 5E-A and 5E-AS
0.1 ppm C
1
with 5E-I
8
Summary of Contents for 7MB1420
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