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Panel Meter for Frequency, Rate, Total or Period Counter 6-Digit, ⅛ DIN Panel Mount


Panel Meter | Multiple Frequency or Pulse Inputs | 1/8 DIN | DPF20

Panel Meter | Multiple Frequency or Pulse Inputs | 1/8 DIN

THB9,606.11 DPF20-LV

  • Dual Channel (A + B + Reset)
  • Option for Wall Mounting
  • NEMA 4 (IP65) Front Panel
  • Power Options of 85 to 260 Vac and 11 to 60 Vdc
  • Excitation Power Supply of 5 to 18 Vdc @ 70 mA
  • Optional Outputs: Modbus®, Up to 6 Relays, Analog, SSR Drive, RS485 and RS232
  • Applications
  • Industrial Flow Rate or Total Indication and Alarm or Control
  • Angular Position or RPM Indication (with Quadrature Sensor)
  • Product/Piece Counting or Production Rate Indication
Instrumentation and Accessories - View related products


Omega’s new DPF20 Series of indicators offer real flexibility for measurement of a wide range of frequency or pulse inputs. The display is easily configured to indicate frequency, rate, period or count. This makes the meter ideal for flow applications where they can display flow rate or total from a variety of different flow sensors. Or for quadrature signals, to indicate angular position or rotational speed and direction.

The DPF20 series offers exceptional performance at an economical price, with some unique and powerful features.





Multiply, divide and preset values




  1. configure a second setpoint in the same alarm, to create “alarm windows”
  2. configure independent activation and deactivation delays
  3. configure hysteresis
  4. configure alarm to activate as high or low
  5. failsafe function – normally closed relay requires activation for non-alarm condition
  6. latched alarms function – operator reset required
  7. Counter Reset, Stop or Continue
  8. Configurable hysteresis

Power up delay

Allows for a delay in the start-up time after powering the instrument. During this time the instrument performs no measurement or control.
Ability to reset the display count on instrument start-up.

Display Brightness

Select from 5 levels of LED intensity.


Password protect the configuration menu.
This blocks access to the instrument set-up parameters, but the operator can still access set-point values.

Max / min memory

Front panel key selection of display minimum or maximum values

Sensor Type

The fast and simple way to configure a sensor. Select from a predefined list Eg. NPN, PNP, Namur, pick-up, inductive, etc.
The instrument will automatically configure the required parameters for the selected sensor (pull-up / pull-down resistors, trigger level, excitation voltage, etc)

Trigger sense

Simple selection of the optimal trigger level for the sensor input. The display indicates up or down reflecting the status of the input signal level. When the LED changes state continuously the optimal trigger level has been achieved.

Main Functions: Counter, ratemeter, period meter
Display Digits: 6
Display Range: 999999/-199999
Decimal Point: Configurable
LED Color: Red standard; green optional
Digit Height: 14 mm (0.55")
Signals Accepted: NPN, PNP, Namur, pick-up, TTL, inductive, mechanical, quadrature
Excitation Voltage: 5 Vdc, 9 Vdc, 15 Vdc, 18 Vdc (max. 70 mA)
Maximum Vdc at Input Terminals: ±30 Vdc
Input Impedance: 2.4 kO with pull-up or pull-down resistor; 470 k without resistor
Quartz Accuracy: ±0.01%
Thermal Stability: 20 ppm/ºC
Display Refresh: 15/second
Maximum Frequencies:
    Counter: Up to 250 KHz
    Ratemeter and Period Meter: Up to 500 KHz
Minimum Frequencies: Down to 1 mHz (0.001 Hz) (ratemeter and period meter)
Standard Power: 85 to 265 Vac/DC (isolated 2,500 Vac)
Low Power: 11 to 60 Vdc and 24/48 Vac (isolated 1500 Vac)
Power Consumption: <1.5 W (meter only); < 4.0 W (meter with options)
Connections: Plug-in screw terminal
Slow Function: For low frequency rate meter applications
Fast Function: For high frequency counter applications
Scaling Factor: Multiplier and divider from 1 to 999999
Configurable Reset: Front panel and rear remote reset, and reset linked to alarm activation
Preset: Configurable
Retention Memory: Recovers count value in case of power loss
Dimensions and Environment
Weight: <150 grams (<5.3 oz)
Front Panel Size: 96 x 48 mm (3.78 x 1.89")
Panel Cut-Out: 92 x 44 mm (3.62 x 1.73")
Depth Behind Panel: 91 mm (3.58") including terminals
Operating Temperature: 0 to 50ºC (32 to 122ºF)
Storage Temperature: -20 to 70ºC (-4 to 158ºF)
Warm Up: 15 minutes
Front Panel Protection: NEMA 4 (IP65)
(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Availability: 5 weeks
Frequency panel meter, 85 to 260 Vac powered
Availability: 1 week
Frequency panel meter, 11 to 60 Vdc powered
Plug-in Option Cards
Availability: 7 weeks
Analog output
Availability: 1 week
Modbus RTU
Availability: 7 weeks
Availability: 7 weeks
Availability: 1 week
Open collector output
Availability: 1 week
SSR drive (DC pulse)
Availability: 1 week
Single relay output
Availability: 1 week
4 relay output
Availability: 1 week
6 relay output
Availability: 1 week
Benchtop case with handle/tilt stand for 1/8 DIN panel meters. Includes 2 cable glands on rear panel
Consult Sales  
NEMA 4 (IP65) wall-mount ABS enclosure, 175 W x 125 H x 125 mm D (6.9 x 4.9 x 4.9") with 2 glands for cable entry
All prices on this site are shown in Thai Baht.
Note: To order with optional green display add suffix “-GN” to meter model number. Contact sales for pricing. Additional 2 weeks delivery.
To order with plain front lens (no operator access to buttons) add suffix “-NBT” to meter model number. Contact sales for pricing.
Comes with unit of measurement stickers, panel mounting clips, and installation/operator’s manual.
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