Thermocouple and RTD Modules for Compact FieldPoint
NI cFP-TC-120, NI cFP-TC-125, NI cFP-RTD-122, NI cFP-RTD-124
• 8 temperature inputs
• Thermocouple or millivolt
• 2-, 3-, or 4-wire RTD
• Built-in signal conditioning
between channels
• 250 V common-mode isolation
on cFP-TC-125
• 50 and 60 Hz noise rejection
• 16-bit resolution
• Input ranges configurable in software
for each channel
• 2,300 V
rms
bank isolation for transient
overvoltage protection
• Hot-swappable with autoconfiguration
• -40 to 70 °C operating range
Module
cFP-TC-120
cFP-TC-125
cFP-RTD-122
cFP-RTD-124
Input
Channels
8
8
8
8
Resolution
(bits)
16
16
16
16
Input Type
Thermocouple
Millivolt
Thermocouple
Millivolt
2-, 3-wire RTD
Resistance
2-, 4-wire RTD
Resistance
Input Ranges Software-
Configurable per Channel
J,K,R,S,T,N,E, and B ± 25 mV, ±50 mV
±100 mV, -20 to 80 mV
J,K,R,S,T,N,E, and B
-20 to 80 mV
Pt 100, Pt 1,000
0 to 400, 0 to 4000
Ω
Pt 100
0 to 400
Ω
50/60 Hz
Noise Filter
All-Channel
Update Period
1.13 s (0.88 Hz)
0.22 s (Filter Off)
0.99 s (Filter On)
1.08 s (0.93 Hz)
1.08 s (0.93 Hz)
Common-Mode
Between Channels
–
250 V
rms
–
–
Safety
Isolation
2,300 V
rms
bank isolation
2,300 V
rms
bank isolation
2,300 V
rms
bank isolation
2,300 V
rms
bank isolation
Overview
The NI cFP-TC-12x and cFP-RTD-12x are versatile temperature input
modules for Compact FieldPoint used to measure thermocouples,
millivolt-level voltages, thermistors, and 2-, 3-, and 4-wire RTDs. They are
used in applications such as temperature chamber control, device testing,
and process control. Thermocouples are low-cost, flexible temperature
devices. RTD sensors are used in applications for acquiring temperatures
with high accuracy. Two- and 3-wire RTDs work well for applications with
short signal wires and low noise levels; 4-wire RTDs are well-suited for
applications with long signal wires or high noise levels. All of these I/O
modules include overranging and onboard diagnostics to ensure trouble-
free installation and maintenance. The modules measure and linearize
signals on board to return scaled values to your control or monitoring
software. The cFP-TC-12x and cFP-RTD-12x modules have NIST-traceable
calibration certificates (available upon request) to ensure accurate and
reliable analog measurements.
Compact FieldPoint
Compact FieldPoint is designed for industrial control applications that
perform advanced embedded control, data logging, headless operation,
and Ethernet connectivity. Compact FieldPoint, a rugged, reliable NI platform,
is designed for industrial and mobile environments with high shock,
vibration, and temperature extremes.
Isolation
The cFP-TC-125 provides 250 V
rms
common-mode voltage protection
between channels, and all cFP-TC-12x and cFP-RTD-12x modules
feature optical bank isolation with 2,300 V
rms
of breakdown isolation.
In addition, the cFP-TC-12x and cFP-RTD-12x offer double insulation for
up to 250 V
rms
of operational isolation. You can safely use Compact
FieldPoint with the cFP-CB-1 or cFP-CB-3 connector block in applications
where hazardous voltages are present.
NI [ NATIONAL INSTRUMENTS CORPORATION ]
