---
lang: "en"
title: "K109UI Voltage/Current Isolator"
sku: "K109UI"
canonical_url: "https://shop.marcomweb.it/en/voltage-current-phase/k109ui-voltagecurrent-isolator"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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K109UI: Configurable Galvanic Voltage/Current Isolator

The K109UI is a three-way galvanic isolation converter for industrial standard voltage or current signals, with passive input and active output. The analog-to-digital conversion is 14-bit on each input range. It also features programmable rejection for 50 Hz or 60 Hz mains, an additional filter for reading stabilization, input and output scale inversion, programmable out-of-scale input at 2.5% or 5%, square root extraction, and linearization for horizontal cylindrical tanks. The module is also characterized by extremely compact dimensions, DIN 35 mm rail mounting, bus power capability, quick connections via spring terminals, three-way isolation, and in-field configurability via DIP-switches.

## Features

- INPUT: current 0/4..20 mA or voltage 0..15, 0..30, 0..10, 2..10, 0..5, 1..5 Vdc
- OUTPUT: current 0/4..20, 20..4/0 mA or voltage 0..10, 2..10, 0..5, 1..5 Vdc
- POWER SUPPLY: 19.2..30 Vdc
- MAX ABSORPTION: 22 mA
- ISOLATION: 3-way 1.5 kVac
- MEASUREMENT CONVERSION: 14 bit
- PRECISION CLASS: 0.1%
- POWER SUPPLY TECHNIQUE: Direct on spring terminal or distributed with expandable K-BUS connector
- DIMENSIONS: 6.2 x 93.1 x 102.5 mm
- SPECIAL FUNCTIONS: scale inversion, square root extraction, linearization for horizontal cylindrical tanks

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Source: https://shop.marcomweb.it/en/voltage-current-phase/k109ui-voltagecurrent-isolator

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.