Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument

Potentiometer Position Input Process Indicator Model DIS876


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
(Terminal Labeled)

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Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument

Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Catalogue
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Manual


Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument


Features

Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Provides 3 1/2 Digit Digit Display, Red or Green LEDs
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Display Calibrated in Engineering Units (%, gph, klb, etc.) Proportional to a Potentiometer Position Input
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Potentiometer Values from 100 ohms to 100 kilohms
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Fully Isolated Output and/or 0, 1, or 2 Alarms
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Alarm Setpoints Adjustable Without Disturbing Transmitter Output
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Fail-safe Alarm Operation
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument LED Alarm Status Indicator
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Adjustable Deadband
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Unlimited* Choice of Input/Output Ranges
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Fits Standard 1/8 DIN Cutout
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Splashproof Front Panel
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument Rated NEMA-4X, Splashproof and Corrosion Resistant When Properly Installed
Potentiometer,Position,Input,Process Indicator,Model DIS876,Wilkerson Instrument 5 + 5 Year Warranty


Description

The DIS876 provides a display, optional isolated DC output voltage or current proportional to the slide position of a potentiometer, and optional alarm setpoints. The units include filtering and conditioning to reduce susceptibility to transients and noisy operations as well as a stable 1 V power supply to excite the potentiometer. Any value potentiometer from 100 ohms to 100 kilohms can be used. 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 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

Tank level, valve or actuator position indication, control, monitoring, data acquisition and warning, creating and displaying test signals.

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 POTENTIOMETER RESISTANCE
any range from 100 ohms to 100 kilohms

INPUT SPAN ADJUSTMENT
70% to 100% of pot rotation

INPUT OFFSET ADJUSTMENT
0 to 25% of pot rotation

INPUT IMPEDANCE
>10 megohms

EXCITATION
1 V, 10 mA max load

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
1 sec typical

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

DISPLAY
Digit Size
  .56 inch LED, 3 1/2 digits, 1999

Decimal Point
  1.9.9.9

Control Range
  Zero
    1999
  Span
    min span 10
    max span 2000

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
 14F to 140F
-10C to 60C

TEMPERATURE STABILITY
(0.02% of span +30 V)/C max

POWER
115 VAC 10%, 50/60 Hz
  (4 W max)
230 VAC 10%, 50/60 Hz
  (4 W max)

* 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).