OMX 312UNI

UNIVERSAL DIGITAL CONVERTER/SPLITTER • UNI > 2x U/I

The OMX 300 model series are digital DIN rail mounted signal converters housed in an enclosure only 17.5 mm wide.
The OMX 312UNI type is a galvanic isolated single-channel universal signal converter / splitter. It can be configured for 10 different input variants. Setting of both the input and output ranges can be done conveniently by a DIP switch located on the side of the housing or from a PC via the OM Link SW.”You can also use this converter as a splitter into 2 analogue outputs.
This device is based on a microprocessor with a 24-bit ∆∑ A/D converter, which guarantees high accuracy and excellent stability.

Multifunction input (DC, PM, RTD, T/C, DU)
2x Analogue outputs, passive/active
Quick configuration by DIP switch
PC configurable via USB port
Excitation 24 VDC
Galvanic isolation 2.5 kVAC
Simple instalation to DIN rail
Power supply 10…30 VDC, 24 VAC

Input

Number of inputs

2 vstupy

Range

±60 mV

> 10 MOhm

Vstup 1

±75 mV

> 10 MOhm

Vstup 1

±100 mV

> 10 MOhm

Vstup 1

±150 mV

> 10 MOhm

Vstup 1

±300 mV

> 10 MOhm

Vstup 1

±1000 mV

> 10 MOhm

Vstup 1

±1200 mV

> 10 MOhm

Vstup 1

±20 V

> 1 M?

Vstup 2

±40 V

> 1 M?

Vstup 2

±100 mA

> 200 mV

Vstup 3

Range

±2 V

1 MOhm

Input 2

±5 V

1 MOhm

Input 2

±10 V

1 MOhm

Input 2

0…5 mA

< 200 mV

Input 3

4…20 mA

< 200 mV

Input 3

±20 mA

< 200 mV

Input 3

OHM

Range

0…100 Ohm
0…300 Ohm
0…1 kOhm
0…3 kOhm
0…10 kOhm
0…100 kOhm
0...300 kOhm (only for 2 or 4-wire connection)

Connection

2, 3 or 4-wire

RTD

Type

Pt 100/500/1000, 3850 ppm/°C

-50°...450°C

Pt 100 3920 ppm/°C

-50°...450°C

Pt 50 3910 ppm/°C

-200°...1100°C

Pt 100 3910 ppm/°C

-200°...450°C

Connection

2, 3 or 4-wire

NTC

Type

NTC1 2k2, B2585=3600 (-40°...125°C)
NTC2 2k0, B2585=3528 (-40°...125°C)
NTC3 10k, B2585=3435 (-40°...125°C)
NTC4 10k, B2585=3977 (-40°...125°C)
NTC5 12k, B2585=3740 (-40°...125°C)
NTC6 20k, B2585=4263 (-40°...125°C)

Connection

2, 3 or 4-wire

PTC

Type

KTY 81/210

Conection

2,3 or 4-wire

Type

Ni 1 000/10 000 s 5 000 ppm/°C

-50°…250°C

Ni 1 000/10 000 s 6 180 ppm/°C

-50°…250°C

Connection

2, 3 or 4-wire

Type

Cu 50/100 with 4 260 ppm/°C

-50°…200°C

Cu 50/100 with 4 280 ppm/°C

-200°…200°C

Connection

2-, 3-, or 4-wire

Potentiometer power supply

1,65 VDC/3 mA, odpor potenciometru > 500 Ohm

Projection

Signalizing LED

PWR, SET

Device status signaling (RGB)

Settings

Control

The device is controlled and set by a single button on the front panel

OM Link

Company communication interface for operation, setting and update of device firmware (microUSB)
OM Link program is also designed for visualization and filing of meas. values from more instruments

Instrument accuracy and functionality

Temperature coefficient

15 ppm/°C

Accuracy

±0,1 % z rozsahu (pro 20 měření/s)
±0,15 % z rozsahu (OHM - 100k/300k)

Accuracy of cold junction measurement

±1,5°C

Rate

1…100 measur./s

Overload capacity

2x; 10x (t < 30 ms)

Wire compensation (RTD, OHM)

< 30 Ohm

Cold junction compensation

adjustable -20°…99°C, automatic

Linearization

lineární interpolací v 100 bodech (pouze přes OM Link)

Digital filters

arithmetic mean	from 2…100 measurements
floating mean	from 2…30 measurements
exponential mean	from 2…100 measurements
zaokrouhlení	nastavení pevného kroku pro změnu hodnoty

Functions

Tare	designed to reset display on non-zero input signal
Teach-in	semiautomatic regime of input calibration
Simulace	simulace vstupního signálu/funkce přístroje

Math. functions

polynom, invertní polynom, logarithm, exponential, power, root

Watch-dog

reset after 500 ms

Calibration

at 25°C and 40 % r.h.

Analogue outputs

Number of outputs

2 outputs

Type

Isolated, programmable with resolution of max.10,000 steps, type and range are menu selectable

Temperature coefficient

15 ppm/°C

Nonlinearity

±0,1 % of range

Rate

response to value change < 160 µs

Ranges

0…10 V / 10...0 V (resistive load > 2.6 kOhm), 0...20 mA, 4…20 mA / 20...4 mA (aktivní/pasivní)

Compensation

600 Ohm/12 V

Error state

error message indication (<3.0 mA)

Sensor excitation

Fixed

24 VDC/35 mA, isolated

Power supply

10…30 VDC/24 VAC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated

Current draw

< 2,4 W/2,6 VA

Power supply protection

Power supply is protected by a fuse inside the instrument

Operating conditions

Connection

connector terminal board, cable section < 2,5 mm2

Stabilization period

within 5 minutes after switch on

Operating temperature

-20°…60°C

Storage temperature

-20°…85°C

Protection class

IP20

El. safety

EN 61010-1, A2

Dielectric strength

2,5 kVAC within 1 min. between pow. supply and input
2,5 kVAC po 1 min. mezi vstupem a výstupem
2,5 kVAC po 1 min. mezi výstupy

Insulation resistance

for polution degree II, measuring cat. III.

napájení přístroje	300 V (ZI), 255 V (DI)
input, output	300 V (ZI)*

EMC

EN61326-1: 2006

Seismic capacity

IEC/IEEE 60980-344 Edition 1.0, 2020, par 6,9

Mechanical properties

Material

PA 66, non-inflammable UL 94 V-0 (black)

Dimensions

48 x 24 x 72 mm (w x h x d)

Installation

DIN rail, width 35 mm

Images

Dimensions and installation

Connection

Datasheets

File name	File type	Version	Language	Download
Datasheet OMX312UNI Katalogový list OMX312UNI	PDF	2023.1		Download
Datasheet OMX312UNI Katalogový list OMX312UNI	PDF	2022.1		Download

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User manuals

File name	File type	Version	Language	Download
Operating instructions OMX312UNI Návod OMX312UNI Operating instructions OMX312UNI Operating instructions OMX312UNI Operating instructions OMX312UNI	PDF	2022.1		Download

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Certificates

File name	File type	Version	Language	Download
Certificate EU_Declaration_OMX3xx Certifikát EU_Prohlaseni_OMX3xx	PDF	2022		Download
Certificate Declaration_17050_OMX3xx Certifikát Prohlaseni_17050_OMX3xx	PDF	2022		Download