Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument

Frequency Input Process Indicator Model DIS975


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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Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument

Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Catalogue
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Manual


Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument


Features

Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Provides 4 1/2 Digit Display, Red or Green LEDs
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Display Calibrated in Engineering Units (rpm, fps, ips, mps, etc.) Proportional to Frequency Input
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Fully Isolated Output and/or 0, 1, or 2 Alarms (Optional)
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument 50 mV to 100 V Peak Input Sensitivity
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Selectable Sensitivity for Low Noise Level Rejection
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Frequency Limit 60 kHz
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Alarm Setpoints Adjustable Without Disturbing Transmitter Output
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Fail-Safe Alarm Operation
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument LED Alarm Status Indicator
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Adjustable Deadband
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Unlimited* Choice of Input/Output Ranges
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Fits Standard 1/8 DIN Cutout
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument Rated NEMA-4X, Splashproof and Corrosion Resistant When Properly Installed
Frequency Input Process Indicator,Model DIS975,Wilkerson Instrument 5 + 5 Year Warranty


Description

The DIS975 provides a display, optional isolated DC output voltage or current proportional to a frequency 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 a 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 output voltage or current.

The wide range input sensitivity allows the DIS to be driven from low level magnetic pickups as well as logic level signals. A choice of three input sensitivities allows the user to trade off sensitivity versus noise rejection. A built-in pullup resistor is connected to a spare input terminal to permit use with contact closure or open-collector inputs.

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

Flow, speed of motors, conveyors, etc., indication, control, Hi/Lo alarm.

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
select any range from 0 to 10 Hz min
to 0 to 60 kHz max

INPUT SENSITIVITY
any voltage from 15  mV to 250 V rms

INPUT IMPEDANCE
100 kilohms or greater

PULLUP RESISTOR
10 kilohms

Open Circuit Voltage
  +5 VDC

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, 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
 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).