16
Quad pH/mV Amp
sent to the
e-corder
. The overall operation of the pH/mV Amp can be
better understood by referring to
Figure A–1
.
The thermoucouple signal is first amplified (
×
100) and then passed
though an isolation transformer. The signal is then ice point corrected,
low pass filtered and then sent to the
e-corder
for secondary
amplification and filtering.
Front Panel
Back Panel
Online indicator
T
c
connector
I
2
C input
I
2
C output
T
c
signal
I
2
C interface
Low pass filter
×
100
Gain adj
Calibration
microprocessor
T
c
signal
T
c
signal
T
c
signal
Low pass filter
Low pass filter
Low pass filter
Quad DAC
T
c
connector
T
c
connector
T
c
connector
×
100
×
100
×
100
×
1
×
1
×
1
Isolation
×
1
Ice point
reference
+
+
+
+
Isothermal block
Temperature
sensor
Figure A–1
Block Diagram of the
Quad Tc/mV Amp
Summary of Contents for Quad Tc/mV
Page 4: ...iv Quad Tc mV Amp ...
Page 8: ...4 Quad pH mV Amp ...
Page 18: ...14 Quad pH mV Amp ...
Page 22: ...18 Quad Tc mV Amp ...
