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DIS971
DC INPUT
PROCESS INDICATORS
FEATURES
 | Provides 4 1/2 Digit Display, Red or Green LEDs
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| Display Calibrated in Engineering Units (°F,°C, %, PSI, etc.) Proportional to DC Input
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| Fully Isolated Output and/or 0, 1, or 2 Alarms (Optional)
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| Alarm Setpoints Adjustable Without Disturbing Transmitter Output
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| Fail-safe Alarm Operation
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| LED Alarm Status Indicator
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| Adjustable Deadband
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| 50 mV or 1 mA Minimum Input Span (10 mV available)
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| Unlimited* Choice of Input/Output Ranges
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| Wide Range Input Available
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| Fits Standard 1/8 DIN Cutout
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| Rated NEMA-4X, Splashproof and Corrosion Resistant When Properly Installed
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| 5 + 5 Year Warranty
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DESCRIPTION
The DIS971 provides a display, optional isolated DC output voltage or
current proportional to a DC input signal, and optional alarm setpoints. The
units include 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.
All controls are accessible by removing the gasketed front access panel.
The display controls are wide-ranging so that it can be calibrated to display
engineering units. Decimal point selection is made with a switch, also
accessible from the front.
A complete set of engineering unit labels is sent with each DIS. Once the
display has been adjusted to read the correct engineering units, the alarm
setpoints can be adjusted without test equipment and without disturbing the
transmitter output. Either setpoint may be displayed by use of the SP CAL
switch. Each setpoint has an LED to indicate alarm status. The alarms have
adjustable deadbands. Terminations are made to a screw terminal connector on the
rear of the case.
The wide-range (WR) DC preamplifier allows a choice of voltage or current input
signal selection by the use of an 8-position DIP switch. The choices of full
scale inputs are shown below:
Voltage
50 mV
100 mV
500 mV
1 V
1/5 V
5 V
10 V |
Current
1 mA
5 mA
10 mA
4/20 mA
20 mA
10/50 mA
50 mA |
TYPICAL APPLICATIONS
DC process indication, control, monitoring, voltage/current scaling, isolation,
buffering, noise reduction, driving, DC monitor/current limit, level/position
control, HI/LO pressure alarm, power demand warning.
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 secure
the DIS to the panel.
SPECIFICATIONS
INPUT RANGE
Voltage
select any range
between ±250 V max
(min span 50 mV)
Current
select any range
between ±5 A
max
(min span 1 mA, internal shunt)
Low Input (Option
S)
select any range
between ±20 V max
(min span 10 mV)
INPUT IMPEDANCE
Voltage
200 kilohms
Current
Input
1
mA
10
mA
20
mA
4/20 mA
100
mA
1
A
5 A
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Shunt Value
100
OHM
10
OHM
5 OHM
61.9
OHM
1
OHM
0.1 OHM
0.01 OHM
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OUTPUT RANGE
Voltage
select any range
between ±10 V
10 mA max
load
(min span 0.2
V)
Current
select any range from 0
to 20 mA max
24 V compliance**
(min span 1
mA)
RELAY CONTACTS
(spdt)
Resistive Load:
5 A max, 150 W max,
240
VAC max, 30 VDC max
Inductive Load:
1/8 HP max at 120/240 VAC
SETPOINT
each alarm 0 to 100% of span
DEADBAND
0.25% to 100% of
span
RESPONSE TIME
< = 100 ms
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ISOLATION
Output/Input
>500 megohms
Breakdown
Voltage
>600 VAC rms
DISPLAY
Digit Size
.56 inch LED, 4 1/2 digits, ±19999
Decimal Point
±1.9.9.9.9
Control Range
Zero
±19999
Span
min span 10
max span 20000
Display Update
3/sec
ACCURACY
±0.1% of span
LINEARITY
Display
±0.01% of
span
Output
±0.025% of
span
OUTPUT RIPPLE
<0.1% of
span
(peak to
peak)
COMMON MODE REJECTION
120 dB, DC to 60 Hz
OPERATING TEMPERATURE
14°F to 140°F
-10°C to 60°C
TEMPERATURE STABILITY
±(0.02% of span +30 µV)/°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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* Within specified range limits.
**
Compliance: The sum of the voltage drops in the output loop cannot exceed 24 V at
rated current
(1200 ohms at 20 mA).
TERMINAL CONNECTIONS
Output - (Optional)
Output + (Optional)
NC
Input
+
Input
-
Shield
Alarm 1 NC (Optional)
Alarm 1 C (Optional)
Alarm 1 NO (Optional)
Alarm 2 NC (Optional)
Alarm 2 C (Optional)
Alarm 2 NO (Optional)
Power AC
L1
Power AC
L2
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(Terminals
Labeled)
1
2
3
4
5
6
7
8
9
10
11
12
13
14 |
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