# Digital Panel Meter, Counter, Frequency, 6 Digits, 500 kHz, DPF20 Series
**URL**: https://novapart.co/products/DPF20-HV-AO/digital-panel-meter-counter-frequency-6-digits-500
**SKU**: DPF20-HV-AO
**Manufacturer**: OMEGA
**Category**: Automation & Process Control || Panel Displays & Instrumentation || Panel Instrumentation || Digital Panel Meters
**Price**: €429.7500
**Stock**: 10+
**Lead Time**: 58 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Meter Range | 500kHz |
| Digit Height | 14mm |
| Product Range | DPF20 Series |
| Meter Function | Frequency |
| Panel Cutout Width | 92mm |
| Supply Voltage Max | 260VAC |
| Supply Voltage Min | 85VAC |
| Panel Cutout Height | 44mm |
| No. Of Digits / Alpha | 6 |
| Operating Temperature Max | 50°C |
| Operating Temperature Min | 0°C |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:4062506/)
## **Panel Meter for Frequency, Rate, Total or Period Counter 6-Digit,[1] ⁄8 DIN Panel Mount**
**DPF20 Series TM** 5 YEAR
- U **Dual Channel (A + B + Reset)**
- U **Option for Wall Mounting**
- U **NEMA 4 (IP65) Front Panel**
- U **Power Options of 85 to 260 Vac and 11 to 60 Vdc**
- U **Excitation Power Supply of 5 to 18 Vdc @ 70 mA**
- U **Optional Outputs: Modbus[®] , Up to 6 Relays, Analog, SSR Drive, RS485 and RS232**
## **Applications**
- U **Industrial Flow Rate or Total Indication and Alarm or Control**
- U **Angular Position or RPM Indication (with Quadrature Sensor)**
## U **Product/Piece Counting or Production Rate Indication**
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, summarized in the table on page 3.
## **Specifications**
**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 kΩ 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)
**DPF20-LV shown actual size.**
**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)
**1**
**Output and Communications Options (Up to 3 slots, field installable)**
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Option R1 T1 SSR A0 RTU
Main Function Relay Output Transistor Output SSR Control Analog Output Modbus Rtu
Output
Characteristics 3 terminals (NC, Open Collector Output to control Output 4 to 20 mA Function 4 Read_
NO, common) SSR relay with active or passive. Input_Registers
250 Vac, max. 8A DC signal I/P 0 to 10 Vdc
Isolation 3500 Vac 3500 Vdc 1000 Vdc
opto-isolated
Specification Max. current: 8 A Type of output: Type of output: Load Addresses:
(resistive load). Transistor. DC Pulse impedances: 01 to 247.
Max. Voltage: Max voltage: Output voltage: ≤350 Ω (for Bus: RS485.
250 Vac 35 Vdc. +15 Vdc 4 to 20 mA Speed: 57.6 Kbps
continuous Max. current: Max. current: active) ≤800 Ω to 600 bps.
50 mA. 45 mA (passive) Data format: 8e1
opto-isolated Max. external (standard), 8o1,
voltage: 27 Vdc. 8n2.
≥10 K Ω 0 to Factory
10 Vdc configuration:
Accuracy: <0.1% Address 1;
FS. Speed 19.2 Kbps;
Thermal stability: Format 8e1;
60 ppm/ºC mA; Decimal point
50 ppm/ºC Vdc. Auto
Step response:
<75mS (to 99%).
Factory default
setting: 0-9999 =
4 to 20 mA
On error: FS
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Option S4 S2 R4 R6
Main Function RS485 ASCII RS232 ASCII 4 Relays 6 Relays
Characteristics ASCII Protocol Retransmission of 3 terminals (NC, NO, 3 terminals (NC, NO,
signal to allow common) 250 Vac, common) 250 Vac,
“Daisy Chaining” max. 6A max. 6A
Isolation 1000 Vdc 2500 Vac
Specification Speed: 57.6 Kbps to Speed: 57.6 kbps to Max. current: 6 A Max. current: 6 A
600 bps. 600 bps. (resistive load). (resistive load).
Data format: 8n1, Data format: 8n1 Occupies 2 option Occupies all 3 option
8o1, 8n2, 8e1. (standard), 8o1, 8n2, slots. slots.
Bus terminator: not 8e1. 3rd slot only No other options
included. Protocol: ASCII. available for AO, available.
Protocol: ASCII. Architecture: master RTU, S4 or S2
Architecture: master - slave.
- slave. Address: 01 to 31.
Addresses: 01 to 31. Broadcast address:
Broadcast address: 128
128.
Factory
configuration:
Mode Slave;
Address 1;
Speed 19.2 Kbps;
Format 8n1;
Decimal point Auto;
Mode Master;
Destination
address 31;
Frequency 0.5 sec;
Decimal point Auto;
Answer delay 0 mS.
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**2**
**DPF20 Performance**
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Feature Description
Scaling Multiply, divide and preset values
Alarms • Configure a second setpoint in the same alarm, to create “alarm windows”
• Configure independent activation and deactivation delays
• Configure hysteresis
• Configure alarm to activate as high or low
• Failsafe function – normally closed relay requires activation for non-alarm condition
• Latched alarms function – operator reset required
• Counter Reset, Stop or Continue
• 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 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.
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To Order
Model No. Description
DPF20-HV Frequency panel meter, 85 to 260 Vac powered
DPF20-LV Frequency panel meter, 11 to 60 Vdc powered
Plug-in Option Cards
DPF20-AO Analog output
DPF20-RTU Modbus RTU
DPF20-S4 RS485 ASCII
DPF20-S2 RS232 ASCII
DPF20-T1 Open collector output
DPF20-SSR SSR drive (DC pulse)
DPF20-R1 Single relay output
DPF20-R4 4 relay output
DPF20-R6 6 relay output
Accessories
DP20-BTC-2 Benchtop case with handle/tilt stand for [1] ⁄8 DIN panel meters. Includes 2 cable glands on
rear panel
DP20-WME-2 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
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_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._ _**Order Example: DPF20-LV-GN-NBT,** 6-digit frequency panel meter, 11 to 60 Vdc powered, with green display and plain front lens._
**3**
## Links
- [View this product on Novapart](https://novapart.co/products/DPF20-HV-AO/digital-panel-meter-counter-frequency-6-digits-500)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/omega/dpf20-hv-ao/panel-meter-frequency-6-digit/dp/4062506)
---
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