WILKERSON INSTRUMENT CO., INC.

DIS871-24 DC Input Process Indicator
3.5 Digit Display With 24 VDC Power for
Two-Wire Transmitter with Optional Alarms
and Re-Transmit Output

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DIS871-24

DIS871-24
DC Input
Process Indicator
3.5 Digit Display
With 24 VDC Power for
Two-Wire Transmitter
With Optional Alarms
and Re-Transmit Output

$450.00

The following information must be entered to complete your order:
See "Specifications" below for Input, Output and Display range limits.

Power:

Display: Zero Scale
Full Scale
Units (Optional)
  Display Action
Alarms: Alarm Option
Output: Output Action
.(If Output Option
Selected, Enter
Output Values)
Zero Scale
Full Scale
Units

Quantity:

 

  • Features
  • Description
  • Specifications
  • Dimensions
  • Connections
  • Display Calibrated in Engineering Units (°F,°C,%,PSI, etc.) Proportional to DC Input
  • Mount, Wire and Calibrate from Front
  • Fully Isolated Output and/or 0, 1, or 2 Alarms
  • Alarm Setpoints Adjustable without Disturbing Transmitter Output
  • Fail-Safe Alarm Operation
  • LED Alarm Status Indicator
  • Adjustable Deadband
  • 24 VDC Power Supply for Two-Wire Transmitters
  • 4/20 mA Input Range
  • Fits Standard 1/8 DIN Cutout
  • Rated NEMA-4, Splashproof when Properly Installed
  • 5 Year Warranty

The DIS871-24 provides a display, optional isolated DC output voltage or current proportional to a DC input signal, and optional alarm setpoints. All Wilkerson products are designed with RFI filters and lightning protection to reduce susceptibility to electrical noise and damage by lightning. The digital display utilizes an auto-zero dualslope integrating A/D converter for accuracy and stability. The instrument contains a 24 VDC transmitter power supply specifically designed for use with two-wire and other 24 VDC powered transmitters.

All controls are accessible by removing the gasketed front access panel. The display controls are wide-ranging so that they 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 output voltage or current.

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.

TYPICAL APPLICATIONS
DC process indication, control, monitoring, isolation, DC monitor/ current limit, two-wire excitation.

INPUT RANGE
4/20 mA

INPUT IMPEDANCE
61.9 ohms

TRANSMITTER POWER SUPPLY
24 VDC regulated, 30 mA max

OPTIONS SA, DA SETPOINT
each alarm 0 to 100% of span

DEADBAND
0.25% to 100% of span

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

OPTION TX 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
>24V compliance (1200 ohms max at 20 mA)
(min span 1 mA)

OUTPUT RIPPLE
(Peak-to-Peak) <0.1% of span

ISOLATION
Output / Input >500 megohms
Breakdown Voltage >600 VAC rms

RESPONSE TIME
(Range Dependent) < 100 ms

ACCURACY
±0.1% of span

LINEARITY
Display ±0.01% of span
Output ±0.025% of span

COMMON MODE REJECTION
120 dB, DC to 60 Hz

DISPLAY
Digit Size .56" LED, 3½ digits, ±1999
Decimal Point ±1.9.9.9
Control Range
Zero ±1999
Span min span 10/max span 2000

DISPLAY
Update 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 or 60 Hz (4 W max)
230 VAC ±10%, 50 or 60 Hz (4 W max)

DIN Mod Series Dimension Drawing

Terminal 1
Terminal 2
Terminal 3
Terminal 4
Terminal 5
Terminal 6
Terminal 7
Terminal 8
Terminal 9
Terminal 10
Terminal 11
Terminal 12
Terminal 13
Terminal 14
Output -
Output +
24 VDC +
24 VDC -
Input +
Input -
Alarm 1 NC
Alarm 1 C
Alarm 1 NO
Alarm 2 NC
Alarm 2 C
Alarm 2 NO
Power AC L1
Power AC L2
Specifications    Manual

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Process Control Instrumentation