FIRST
Angular resolution
Choose the required angular accuracy.
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EXPLOSION-PROTECTED · PROJECT-CONFIRMED EX MARKING
RS485 Modbus RTUExplosion-proof Absolute Encoder
RS485 Modbus RTUEX PROTECTED
BRT38 · Ø38 mm body · Ø6 mm shaft · EXPRODUCT VIEW
HOUSING SIZE · SHAFT
BRT38 MOUNTING STYLE
RS485 MODBUS RTUConfigure accuracy, turn range and cable exit.
View technical data ↓THEN
Turn range
Choose single-turn or retained multi-turn.
NEXT
Cable exit
This housing supports side or rear cable exit.
THEN CHECK THE INSTALLATION
- Protection
- Project-confirmed Ex marking
- Mechanical
- BRT38-EX · SHAFT
- Supply
- 5–24 VDC standard · 9–36 VDC or other voltages customizable
SELECTED CONFIGURATIONBRT38-EX / SHAFT / 16 / 1 / SIDE CABLEFinal suffix, pinout, drawing and certification are confirmed during engineering review.
Request this configuration →ENGINEERING OVERVIEW
Configured feedback,
ready for integration.
FOSAI matches the selected housing, measurement range and signal requirements with the correct model code, controlled drawing and technical documentation.
ENGINEERING DATA
Engineering specification
Supplier-catalog values for preliminary engineering. Final pinout, connector and model suffix are confirmed before ordering.
Selected output / protocolRS485 Modbus RTU
Catalog output codeR0M
Supply voltage5–24 VDC standard · 9–36 VDC or other voltages customizable
Communication settingModbus RTU · 9,600–115,200 bps; 9,600 bps default
Encoder technologyAbsolute magnetic encoder
Resolution10 / 12 / 15 / 16 / 17 bit per 360°
Kernel refresh cycle< 50 μs
Operating temperature−40 °C to +85 °C
Shaft optionsSolid shaft or blind hollow shaft
Linearity≤0.1%
Electrical service life>100,000 h
Operating current≤50 mA single-turn; ≤100 mA multi-turn
Maximum mechanical speed<8,000 rpm single-turn; <3,000 rpm multi-turn
Starting torque0.006 N·m
Maximum shaft load20 N axial / 80 N radial
Housing / shaftStainless-steel housing / stainless-steel shaft
Protection constructionExplosion-protected stainless-steel enclosure; exact marking confirmed by model suffix
Explosion protectionEx ic IIC T5 Gc option; confirm exact certificate and model suffix per project
Turn rangeSingle-turn or 16–21,600 turns, model dependent
Certified temperatureConfirm the certified ambient range for the selected suffix
Installation reviewArea classification, gas group, temperature class, cable entry and grounding required
APPLICATION FIT
Where this product fits—and what still needs review.
Applications represented in this range
Compatibility is not established by the product name alone
- Complete model suffix and controller behavior
- Supply, signal, protocol, scaling and pinout
- Shaft or range, flange, connector and installation envelope
- Protection, certification and controlled drawing requirements
TYPICAL APPLICATIONS
Explore the application
See the measurement task, recommended configuration and installation checks for each working environment.
MODEL SELECTION SUPPORT
Send the application.
Receive the right configuration.
Include measurement range, resolution, interface, supply, shaft or mounting dimensions, protection rating and quantity.
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