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DIN Rail Conditioners Convert Bridge Inputs to mA or Voltage

Bridge/Strain Gage Signal Conditioner


Item# DMD4059

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 C$728.32
10-24 C$691.90
25-49 C$677.34
50-99 C$648.20
100+ C$633.64

In stock

Lead Time (If not in stock): 6 weeks
Bridge/Strain Gage Signal Conditioner DMD4059 DMD4059
  • Standard DIN Rail Mounting
  • Non-Interactive Zero and Span
  • Fast Setup - Over 100 I/O Ranges
  • Removable Connectors

DMD4059 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Supply Voltage Type
Input Type
Input Class
Input Ranges
Output Type
Output Class
Additional Feature


The DMD4059 accepts an input from full Wheatstone strain bridge sensors, pressure transducers or load cells. It provides filtering, amplifies, and converts the millivolt input signal into the selected dc voltage or current output that is linear to the input. The 3-way 1200V isolation eliminates ground loops, common mode voltages and greatly reduces noise pick-up. Sense wire connections are available to give maximum accuracy. Input, output, excitation and zero offset are field configurable via external rotary and slide switches. Offsets of up to ±100% of span can be used to cancel sensor offsets or tare fixed loads. Features such as red and green LEDs vary in intensity to show input and output activity and an output test button helps with set-up and troubleshooting.

Input Range (unipolar):   Minimum: 0 to 5 mV range, 0.5 mV/V sensitivity
   Maximum: 0 to 400 mV range, 40 mV/V sensitivity
Input Impedance: 200 kΩ typical
Excitation Voltage: Switch selectable 0 to 10 Vdc in 1V increments
    Maximum Output: 10 Vdc @ 120 mA
    Fine Adjustment: ±5% via multi-turn potentiometer
    Stability: ±0.01% per °C
Sense Lead Compensation: Better than ±0.01% per 1Ω change in leadwire resistance
   Maximum Lead Wire Resistance: 10Ω with 350Ω @ 10 Vdc
   Zero Offset (Tare): ±100% of span in 15% increments
Output Ranges:
   Voltage (10 mA max): 0-1 to 0-10 Vdc
   Bipolar Voltage (10 mA max): ±5 or ±10 Vdc
   Current: 0-2 mA to 0-25 mA
   Compliance, Drive @ 20 mA: 20V, 1000&937; drive; current output can be selectively wired for sink or source.
Output Linearity, Ripple and Noise: Better than ±0.1% of span, <10 mV rms ripple and noise
Output Zero and Span (Fine Adjustment): Multi-turn potentiometers to compensate for load and lead variations, ±15% of span adjustment range typical
Function Test Button: Sets output to test level when pressed. Adjustable 0 to 100% of span via potentiometer. Factory default is approx 50% of span.
Response Time: 70 ms typical
Common Mode Rejection: 100 db min
Isolation: 1200 Vrms min, 3-way isolation, power to input, power to output and input to output
Operating Temp Range: -10 to 60 °C (14 to 140 °F)
Thermal Stability: Better than ±0.02% of span per °C
Standard Power: 80 to 265 Vac, 50/60 Hz or 85 to 300 Vdc
Low Voltage "DC" Option: 9 to 30 Vdc or 10 to 32 Vac
Power Consumption: 2 to 5 W depending upon number of load cells
Mounting: Mounts to standard 35 mm DIN rail
Environmental Protection: IP40
Connections: Four 4-terminal removable connectors 14 AWG max wire size
Dimensions: 22.5 W x 117 H x 122 mm D (0.89 x 4.62 x 4.81"), height includes connectors



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Rated 5 out of 5 by from The Brand you want to use. Quick Friendly Service. Alway a pleasure working with Omega
Date published: 2023-05-26
Rated 5 out of 5 by from Strain gage Signal Conditioner! Excellent quality and quick service.. Exactly what we needed. Great follow up by Omega.
Date published: 2023-04-24
Rated 5 out of 5 by from Great Product with Support This signal conditioner has a wide range of variable inputs and outputs. It is slim on the din rail so not much space is taken up. Made in the US. Support is readily available as opposed to other similar product manufacturers.
Date published: 2023-02-08
Rated 3 out of 5 by from Strain Signal Conditioner Seems decent. Simple instructions, and wiring diagram. Worried vibration will cause the zero drift.
Date published: 2022-09-26
Rated 2 out of 5 by from Poor mechanical design The zero and span pots are located well behind a paper thin escutcheon and are not centered behind the holes in the surface which makes them very difficult to find with a screw driver. The plastic spring mechanism for attaching to the DIN rail is very flimsy and does not hold the device securely.
Date published: 2021-08-10
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On the DMD4059-DC model, I have one that reads almost the same pressure all the time when extruder is hot. When it is cool, the reading does not drop off. I have plugged new pressure transducer into it and it still does not read zero or anywhere close.

Asked by: ChuckW
We suggest you call us at 1-800-826-6342 to troubleshoot your system over the phone. Ask for the Pressure Engineering Group
Answered by: Applicatrions Engineer JK
Date published: 2021-08-24

what are the dimensions of the DMD4059-DC?

Asked by: FrankS
Hi, thanks for connecting with Omega. In response to your question: Dimensions are as follows, 0.89 W x 4.62 H x 4.81&quot; D (22.5 W x 117 H x 122 mm D), Height includes connectors. Please contact our Tech Support if you have any further questions.
Answered by: Jane
Date published: 2019-06-05

For the DMD4059 Strain Gauge to DC Signal Amplifier, is this model able to handle a switching power supply? If it's supply voltage type is DC and it's given an alternating current, what would happen?

Asked by: Corrie
Both variants of the DMD4059 will run on AC or DC. The DMD4059-DC Low power version will run on 9 to 30 VDC or 10 to 32 VAC. The Standard DMD4059 will run on 80 to 300 VDC or 80 to 265 VAC. They will not work with a switching power supply.
Answered by: Applicatrions Engineer JK
Date published: 2020-11-11

Data sheet says &quot;The DMD4059 accepts an input from 1 to 4 strain bridge sensors&quot; - what is this? It only has 1 output - are the sensors in parallel? Is there a diagram of how to do this? Can it provide excitation to several sensors that use other amps?

Asked by: Zerk
Thank you for your question? The unit will only power up to 4 sensors. You are correct that the unit will only take one input. Hope this was helpful.
Answered by: application engineer je
Date published: 2023-06-14

DOes this device have noise filter? If so what is its cutoff frequency? To what EMI standard is it qualified for?

Asked by: Pass
Thank you for your inquiry, The DMD4059 provides some filtering for stabilizing the signal. For more in-depth information about the filter please contact our Technical Support department @
Answered by: rkent
Date published: 2021-11-01

is it true this part is discontinued?

Asked by: sustaining engineering
The DMD4059-DC (low power DC/AC version) currently has production issues causing a long delay for shipping. The DMD4059 (High Voltage DC/AC Version) does not have this issue. Lead time for DMD4059 is 1 week ARO
Answered by: Applicatrions Engineer JK
Date published: 2021-09-03
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