---
lang: "en"
title: "K109S Voltage/Current"
sku: "K109S"
canonical_url: "https://shop.marcomweb.it/en/voltage-current-phase/k109s-voltagecurrent"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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K109S: Configurable Opto-isolated Voltage/Current Converter with active input

The K109S instrument is a four-point galvanic isolator for industrial standard voltage or current signals, with passive input, active output and auxiliary power supply. Analog to digital conversion is 14-bit on each input range.

## Features

- DESCRIPTION: Opto-isolated V-I / V-I converter with active input
- INPUT: current 0/4..20 mA (loop power) or voltage 0..10, 2..10, 0..5, 1..5 V
- OUTPUT: current 0/4..20, 20..4/0 mA or voltage 0..5/10, 10..0, 1..5 Vdc
- POWER SUPPLY: 19.2..30 Vdc
- MAX ABSORPTION: 23 mA, 45 mA (aux power)
- ISOLATION: 3-way 1.5 kVac
- MEASUREMENT CONVERSION: 14 bit
- ACCURACY CLASS: 0.1%
- POWER SUPPLY TECHNIQUE: direct on spring terminal or distributed with expandable K-BUS connector
- AUXILIARY POWER SUPPLY: on 3 terminals 17..20 V
- DIMENSIONS: 6.2 x 93.1 x 102.5 mm
- SPECIAL FUNCTIONS: scale inversion, square root extraction, linearization for horizontal cylindrical tanks

---

Source: https://shop.marcomweb.it/en/voltage-current-phase/k109s-voltagecurrent

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