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| DI-5B47 Linearized
Thermocouple Input Modules |
Product Highlights
Each DI-5B47 thermocouple input module provides a single
channel of thermocouple input which is filtered, isolated,
amplified, linearized, and converted to a high level analog
voltage output. This voltage output is logic-switch controlled,
allowing these modules to share a common analog bus without
the requirement of external multiplexers.
The DI-5B47 module is designed with a completely isolated
computer side circuit which can be floated to ±50V
from power common (pin 16). This complete isolation means
that no connection is required between I/O common and
power common for proper operation of the output switch.
The DI-5B47 is offered in eight industry standard thermocouple
types: J, K, T, E, R, S, N, and B. Its corresponding output
signal operates over a 0 to +5V range. Each module is
cold-junction compensated to correct for parasitic thermocouples
formed by the thermocouple wire and screw terminals on
the mounting hardware. Upscale open thermocouple detect
is provided by an internal pull-up resistor. Downscale
indication can be implemented by installing an external
47MO resistor, ±20% tolerance, between screw terminals
1 and 3.
Signal filtering is accomplished with a six-pole filter
which provides 95dB of normal-mode rejection at 60Hz and
90db at 50Hz. Two poles of this filter are on the field
side of the isolation barrier, and the other four are
on the computer side.
After the initial field-side filtering, the input signal
is chopped by a proprietary chopper circuit. Isolation
is provided by transformer coupling, again using a proprietary
technique to suppress transmission of common mode spikes
or surges. The module is powered from +5VDC, ±5%.
A special circuit in the input stage of the module provides
protection against accidental connection of power-line
voltages up to 240VAC.
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Models & Prices
| Part
Number |
Type |
Price |
Buy
Online |
| DI-5B47-01 |
J
Input Range:
0°C to +760°C (+32°F to
+1400°F) |
£205 |
|
| DI-5B47-02 |
J
-100°C to +300°C (-148°F
to +572°F) |
£205 |
|
| DI-5B47-03 |
J
0°C to +500°C (+32°F to
+932°F) |
£205 |
|
| DI-5B47-12 |
J
-100°C to +760°C (-148°F
to +1400°F) |
£205 |
|
| DI-5B47-04 |
K
0°C to +1000°C (+32°F to
+1832°F) |
£205 |
|
| DI-5B47-05 |
K
0°C to +500°C (+32°F to
+932°F) |
£205 |
|
| DI-5B47-13 |
K
-100°C to +1350°C (-148°F
to +2462°F) |
£205 |
|
| DI-5B47-14 |
K
0°C to +1200°C (+32°F to
+2192°F) |
£205 |
|
| DI-5B47-06 |
T
-100°C to +400°C (-148°F
to +752°F) |
£205 |
|
| DI-5B47-07 |
T
0°C to +200°C (+32°F to
+392°F) |
£205 |
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| DI-5B47-08 |
E
0°C to +1000°C (+32°F to
+1832°F) |
£205 |
|
| DI-5B47-09 |
R
+500°C to +1750°C (+932°F
to +3182°F) |
£205 |
|
| DI-5B47-10 |
S
+500°C to +1750°C (+932°F
to +3182°F) |
£205 |
|
| DI-5B47-11 |
B
+500°C to +1800°C (+932°F
to +3272°F) |
£205 |
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| DI-5B47-15 |
N
-100°C to +1300°C (-148°F
to +2372°F) |
£205 |
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