The MTT MS3904 Chassis-mounting High-Level Signal Conditioner takes a standard DC current or voltage input and reconditions it into two mutually isolated DC output channels, packaged in the same compact chassis-mount format as the rest of the MS39-series. Where the slim plug-in MS3724 handles high-level signal conditioning on a DIN rail, the MS3904 covers the same role for panels built around MTT’s high-density RC3900 chassis platform.
A wide range of input and output voltage or current combinations is available, including matched dual-voltage pairs and mixed voltage/current outputs, so the module can be specified to match whatever signal levels the application calls for. Front-accessible trimmers allow zero and span adjustment, and four-way isolation between input, both outputs, and power keeps each channel electrically independent. The multi-slot chassis design makes maintenance straightforward and supports high-density mounting where many signal channels need to be conditioned in a compact space.
| Voltage Input Options | 1-5V, 0-1V, 0-5V, 0-10V, ±5V, ±10V DC, or custom (0-200mV to 0-50V) |
| Current Input Options | 4-20mA DC (250Ω) or custom (0-100µA to 0-100mA) |
| Input Resistance | 1MΩ min. (voltage); 250Ω standard (current) |
| Max Allowable Input | 30V DC (voltage) or 40mA DC (current), continuous |
| Output Configurations | Dual channel — matched voltage pairs or mixed voltage/current combinations |
| Output Load | 2mA max (voltage); 300Ω standard, 350Ω for dual current |
| Adjustment | ±2% of span, zero and span, via front trimmers |
| Isolation | 4-way isolation between input, Output 1, Output 2, and power; 100MΩ min. insulation resistance @500V DC; 1500V AC dielectric strength (input to outputs/power), 500V AC (between outputs/power) |
| CMRR | 100dB min. (500V AC, 50/60Hz) |
| Power Supply | 24V DC ±10%, 45mA max; 160mA fuse standard (125mA for C2 output code) |
| Accuracy | Better than ±0.1% of span (at 25°C±5°C); ±0.2% span per 10°C temperature effect |
| Response Time | 85ms max (0-90%, step input) |
| Dimensions | W19.5 x H53 x D82mm |
| Weight | 70g max |
| Mounting | Multi-slot chassis (RC3900A or RS3900-01TB) |
| Operating Conditions | 0-55°C, 5-90% RH non-condensing |
| Storage Temperature | -10 to 60°C |
| Standards | EMC Directive 2014/30/EU; EN61326-1:2013 |
| Additional Features | Customizable response frequency (up to 200Hz) and time constant (2ms @90%); optional CE compliance and polyurethane conformal coating |
Frequently Asked Questions
What is the MTT MS3904 used for?
It takes a standard DC current or voltage input and reconditions it into two mutually isolated DC output channels, in the same chassis-mount format as the rest of the MS39-series. Where the slim plug-in MS3724 handles high-level signal conditioning on a DIN rail, the MS3904 covers the same role for panels built around MTT’s high-density RC3900 chassis platform.
What input and output signals does it support?
Voltage inputs from 0-200mV to 0-50V, or current inputs from 0-100µA to 0-100mA (4-20mA DC standard), with dual output channels in matched voltage pairs or mixed voltage/current combinations. Tell us your input signal and the two outputs you need and we can confirm the configuration.
Can I get two different output signals from one unit?
Yes, the two output channels can be specified as matched voltage pairs or mixed voltage/current combinations, with four-way isolation between input, both outputs, and power keeping each channel electrically independent.
Why chassis-mount instead of a DIN-rail module?
The MS3904 mounts on an RC3900 chassis base alongside other chassis-mount modules, suiting panels that need a high density of signal-conditioning channels in a compact space, rather than individual DIN-rail housings.
How do I know if the MS3904 is right for my application?
If you have a standard analog signal and need two isolated conditioned outputs in a high-density, chassis-mounted panel, the MS3904 on an RC3900 base covers that. Send us your input signal and the output configuration you need and we’ll confirm before you order.
Download MTT MS3904 Chassis-mounting High-Level Signal Conditioner information here
Datasheet: MTT_SpecSheet1_MS3904_Rev240_E
