The Omega DP400S is a 1/8 DIN strain-gauge indicator with a graphic OLED 2.42 in display, accepting load-cell, melt-sensor or potentiometer input. It ships with 2 relays, an isolated analog output and RS-485 Modbus-RTU, plus RFID/NFC and a multilingual interface, on a universal 24 to 230 Vac/Vdc supply.
Specifications per the OMEGA DP400S User’s Guide (M5726).
Overview
The OMEGA DP400S is an indicator/panel meter for acquisition and retransmission of process values, including fast transients. A graphic OLED display drives an intuitive multilingual interface with bar-graph and trend visualization, while software functions add a totalizer and sum. It accepts strain-gauge load cells (max 7.5 mV/V), melt-pressure sensors or potentiometers, and offers relay outputs for alarms, an analog output for retransmission and programmable digital inputs. Serial connectivity uses RS-485 with the Modbus-RTU protocol, and an onboard RFID/NFC interface speeds configuration.
Best for
- Load-cell, melt-sensor and potentiometer indication on a 1/8 DIN front
- Process weighing with net/gross, tare, totalizer and sum functions
- Alarm and on/off control via two configurable relay outputs
- Retransmitting process or setpoint values over an isolated analog output
- Reporting to a PLC or SCADA over RS-485 Modbus-RTU
Key Features
Graphic OLED interface
Backlit 2.42 in OLED, 128 x 64 px, with multilingual menus (EN/IT/DE/FR/ES), bar-graph and process-trend visualization.
Flexible strain-gauge input
Differential, software-configurable input for load cells or melt sensors up to 7.5 mV/V (4 cells, 350 ohm parallel) at 5 V, or potentiometers from 200 ohm.
+/-0.2% accuracy
Input tolerance +/-0.2% +/-1 digit f.s. at 25 C, Ri > 1 Mohm, with 16-bit analog-output resolution.
Complete I/O
Two 2 A / 250 Vac relays, a 0/20 or 4/20 mA analog output and two programmable digital inputs for alarms, control and retransmission.
RS-485 Modbus-RTU + RFID
RS-485 serial with Modbus-RTU for process, setpoint and parameter access, plus an RFID/NFC interface for fast configuration.
Data logging & math
Onboard data logging (1 s to 3600 s, 1K samples), totalizer and sum functions, autozero and configurable stability signaling.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | Omega DP400S |
| Meter type | Strain-gauge indicator / panel meter |
| Display | Graphic OLED 2.42 in, 128 x 64 px, monochrome yellow |
| Format | 96 x 48 mm (1/8 DIN), horizontal or vertical mount |
| Analog input | Differential, software-configurable |
| Strain-gauge input | Max 7.5 mV/V at 5 V (max 4 cells, 350 ohm parallel) |
| Potentiometer input | Min 200 ohm, 5 V supply |
| Input tolerance (25 C) | +/-0.2% +/-1 digit (f.s.) |
| Input impedance | Ri > 1 Mohm |
| Relay outputs | 2 relays, 2 A at 250 Vac, resistive |
| Analog output | 0/20 mA or 4/20 mA, 16-bit, +/-0.2% f.s. |
| Digital inputs | 2, programmable |
| Serial | RS-485, Modbus-RTU |
| RFID / NFC | Yes |
| Calibration | 2-point sampling, full-scale %, or mV/V value |
| Data logging | 1 s to 3600 s, 1K samples |
| Trend | Up to 59 samples, 0.1 s to 3600 s |
| Functions | Totalizer, sum, autozero, net/gross, stability |
| Languages | EN / IT / DE / FR / ES |
| Power supply | 24 to 230 Vac/Vdc +/-15%, 50/60 Hz, 8 VA |
| Operating temp | 32 to 104 F (0 to 40 C) |
| Humidity | 35 to 95% RH |
| Sealing | IP54 front (gasket); IP20 box and terminals |
| Material | Polycarbonate V0 |
| Weight | 5.8 oz (165 g) |
Documentation
DP400S User’s Guide (M5726)Related Products
Frequently Asked Questions
What input does the Omega DP400S accept?
A differential, software-configurable input for strain-gauge load cells or melt sensors up to 7.5 mV/V (up to 4 cells at 350 ohm in parallel, 5 V supply), or potentiometers from 200 ohm.
What outputs does it have?
Two relays rated 2 A at 250 Vac (resistive), one analog output configurable as 0/20 or 4/20 mA (16-bit), two programmable digital inputs, and RS-485 with Modbus-RTU.
How accurate is the DP400S?
Input tolerance is +/-0.2% +/-1 digit of full scale at 25 C, with an input impedance greater than 1 Mohm and 16-bit analog-output resolution.
What display does it use?
A backlit graphic OLED, 2.42 in, 128 x 64 px monochrome yellow, with a multilingual interface plus bar-graph and process-trend views.
What power supply does it need?
A universal 24 to 230 Vac/Vdc +/-15% supply at 50/60 Hz, consuming about 8 VA, so it suits both AC and DC panels worldwide.
- Series:
- DP400S
- Meter Type:
- Strain Indicator
- DIN Size:
- 1/8 DIN
- Display:
- OLED (2.42 in)
- Power Supply:
- Universal (24-230 Vac/Vdc)
- Relay Outputs:
- 2
- Analog Output:
- Yes
- Communication:
- RS-485 (Modbus RTU)
