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DIS474
THERMOCOUPLE INPUT
PROCESS INDICATOR
FEATURES
 | Provides 3 1/2 Digit Display Calibrated in Temperature |
| Degree C/Degree F Switch |
| Red or Green LEDs |
| Linearized for All Standard Thermocouple Types |
| Cold Junction Compensated |
| 0.1 Degree Resolution Available (T/C Types J, K, T, E & N) |
| Plug-In Card Changes T/C Type & Range |
| Fits Standard 1/8 DIN Cutout |
| Rated NEMA-4X, Splashproof and Corrosion Resistant When Properly Installed |
| 5 + 5 Year Warranty |
DESCRIPTION
The DIS474 displays temperature as measured by a thermocouple input. The
unit includes filtering and conditioning to reduce susceptibility to transients
and noisy operations. The digital display utilizes an auto-zero dual-slope
integrating A/D converter for accuracy and stability.
A unique analog thermocouple circuit with digital linearity compensation
provides the optimum combination of resolution and thermocouple
linearization. Linearization is better than +/-1°C from -200°C (-328°F)
to the thermocouple's upper limit on all ranges. 0.1°C/0.1°F resolution
is available for thermocouple types J, K, T, E and N (-199.9 to
+199.9°C/°F). A temperature-sensing I.C. potted inside the input
connector provides optimum cold-junction compensation.
All DIS instruments are gasketed and, when properly installed, are NEMA-4X
splashproof and corrosion resistant. ZERO and SPAN controls are accessible
by removing a gasketed front access panel.
A plug-in range card, accessible without opening the case, permits user
recalibration for all thermocouple types and ranges. °C or°F is selected using
switches accessible from the rear. A rear-panel jumper selects upscale or
downscale burnout indication.
A complete set of engineering unit labels is sent with each DIS.
Terminations are made to a screw terminal connector on the rear of the case.
TYPICAL APPLICATIONS
Temperature indication and monitoring.
MOUNTING
The DIS is designed to be mounted from the front of a panel through a standard
horizontal 3.62 x 1.77 inches (1/8 DIN) cutout. Two mounting cam-screws allow
the securing of the DIS to the panel from the front.
INPUT RANGES
| Input |
Thermocouple Type |
|
Temperature Range |
| B |
Type B |
|
+200/+1820°C or +392/+1999°F |
| E |
Type E |
|
-200/+1000°C or -328/+1832°F |
|
E (Narrow) |
Type E |
|
-199.9/+199.9°C or°F |
| J |
Type J |
|
-200/+1200°C or -328/+1999°F |
|
J (Narrow) |
Type J |
|
-199.9/+199.9°C or°F |
| K |
Type K |
|
-200/+1372°C or -328/+1999°F |
|
K (Narrow) |
Type K |
|
-199.9/+199.9°C or°F |
| N |
Type N |
|
-200/+1300°C or -328/+1999°F |
|
N (Narrow) |
Type N |
|
-199.9/+199.9°C or°F |
| R |
Type R |
|
-50/+1768°C or -50/+1999°F |
| S |
Type S |
|
-50/+1768°C or -50/+1999°F |
| T |
Type T |
|
-200/+400°C or -328/+752°F |
|
T (Narrow) |
Type T |
|
-199.9/+199.9°C or°F |
| Others |
Contact factory |
|
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SPECIFICATIONS
INPUT RANGE
Wide
any standard thermocouple type,
full
temperature range
-200°C
(-392°F) to
+1999°C/°F
Narrow
-199.9 to
+199.9°C/°F
types J, K, T, E &
N
ACCURACY
Wide
+/-(0.1% of reading
plus 1°C or
2°F)
(Includes T/C linearization)
Narrow
+/-0.5°C or
0.9°F
BURNOUT INDICATION
upscale/downscale
jumper
selectable
COMMON MODE REJECTION
120 dB, DC to 60 Hz
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INPUT-TO-LINE BREAKDOWN VOLTAGE
1500 VAC rms
DISPLAY
Digit Size
.56 inch LED, 3 1/2 digit, +/-1999°C/°F
switch selectable
Update Rate
3/sec
OPERATING TEMPERATURE
14°F to 140°F
-10°C to 60°C
TEMPERATURE STABILITY
+/-0.02% of span/°C max
POWER
115 VAC +/-10%, 50/60 Hz
(4 W max)
230 VAC +/-10%, 50/60 Hz
(4 W max)
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TERMINAL CONNECTIONS
Power AC
L1
Power AC
L2
Shield
(Common)
T/C
-
T/C
+
|
Terminals Labeled
1
2
3
4
5 |
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