OMU 408UNI

OMU 408UNI

4 digit 8 CHANNEL MEASURING INSTRUMENT

The OM 408UNI is an 8 channel measuring instrument designed for maximum usefulness and user comfort while maintaining its fair price. It is a multifunction instrument with the possibility of configuration for 8 different input options, easily configurable in the instrument menu. The instrument is based on a single-chip microcontroller with multichannel 24-bit sigma-delta converters, which ensure good accuracy, stability and easy operation of the instrument. Owing to the high rate of sampling on individual channels, there is a chance of evaluating all measuring inputs at the same time.

  • 4 digit programmable projection
  • multifunction input (DC, PM, RTD, T/C, DU)
  • digital filters, tare, linearization
  • size of DIN 96 x 48 mm
  • power supply 10…30 V AC/DC or 80…250 V AC/DC

Options

  • comparators

  • data output

  • analog output

  • measured data record

 

Input
[ ??? ]
Number of inputs
4 inputs
8 inputs
DC
Range
menu selectable
±60 mV
> 100 MOhm
Input U
±150 mV
> 100 MOhm
Input U
±300 mV
> 100 MOhm
Input U
±1200 mV
> 100 MOhm
Input U
PM
Range
menu selectable
0…20 mA
< 400 mV
Input I
4…20 mA
< 400 mV
Input I
±2 V
1 MOhm
Input U
±5 V
1 MOhm
Input U
±10 V
1 MOhm
Input U
±40 V
1 MOhm
Input U
OHM
Range
menu selectable
0…100 Ohm
0…1 kOhm
0…10 kOhm
0…100 kOhm
Connection
2, 3 or 4-wire
RTD
Type
menu selectable
EU > 100/500/1 000 Ohm s 3 850 ppm/°C
-50°…450°C
RU > 50 Ohm s 3 910 ppm/°C
-200°…1 100°C
RU > 100 Ohm s 3 910 ppm/°C
-200°…450°C
US > 100 Ohm s 3 920 ppm/°C
-50°…450°C
Connection
2, 3 or 4-wire
Ni
Type
menu selectable
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
Cu
Type
menu selectable
Cu 50/100 with 4 260 ppm/°C
-50°…200°C
Cu 50/100 with 4 280 ppm/°C
-200°…200°C
T/C
Type
selecmenu selectable
J (Fe-CuNi)
-200°…900°C
K (NiCr-Ni)
-200°…1 300°C
T (Cu-CuNi)
-200°…400°C
E (NiCr-CuNi)
-200°…690°C
B (PtRh30-PtRh6)
300°…1 820°C
S (PtRh10-Pt)
-50°…1 760°C
R (Pt13Rh-Pt)
-50°…1 740°C
N (Omegalloy)
-200°…1 300°C
L (Fe-CuNi)
-200°…900°C
DU
Range
Configuration is performed in two steps:
1.
setting numerical value for the beginning and end of the potentiometer range
2.
slider position calibration for the beginning and end of the potentiometer runway
Potentiometer power supply
2 VDC/6 mA, potentiometer resistance > 500 Ohm
External inputs
Number
3 inputs, on contact
Functions
OFF
No function
HOLD
Stopping measurement (option: Display - Analog output - Limits)
BLOK.K.
Blocking front panel keys
TARA x
Tare activation for channel A - H
TAR.VSE
Tare activation for all channels
TAR.AKT
Tare activation for current channels
NUL. T.x
Resetting tare for channel A - H
N.T. VSE
Resetting tare on all channels
N.T. AKT.
Resetting tare on current channel
NUL. M.M.
Resetting Min/Max. value
ULOZ
Data record activation (extention of RTC/FAST)
NUL. PA.
Resetting memory (extention of RTC/FAST)
PREP.
Gradual or BCD switching of the channels
Projection
Display range
-99999…999999, single-coloured 14-segment LED
Secondary display
99, single-coloured 14-segment LED
9, single-coloured 7-segment LED
Display height
14 mm
Display colour
červená, zelená
Signalizing LED
T
Tare (green)
M
Min./Max. value (green)
Description
na pomocném displeji
Decimal point
nastavitelná v menu - pevná nebo plovoucí
Display brightness
nastavitelný v menu
Displayed values
Kan x
Value from channel A - H
Fil. x
Value from channel A - H after digital filter adjustment
Mat. Fn.
Value of mathematical function
Max.
Maximum value
Min.
Minimum value
Settings
Control
The device is controlled and set by five buttons on the front panel
Selected functions can also be controlled via external inputs
Menu
LIGHT
contains only items necessary for basic device settings with password access
PROFI
Full device settings with password access
USER
User menu of any item, selected from LIGHT/PROFI. Access without password.
Optional functions
Buttons "Left", "Up", "Down", "Enter" can be assigned additional optional features
ZAKAZ
button has no function
NUL. M.M.
Resetting Min/Max vaslues
NUL. T.x
Tare reset - for Channels A - H
NUL.VSE
Tare reset - for all channels
NUL.AKT
Tare reset -for current channell
MENU
Direct access to the selected menu item
DOC. H.
Temporary projection of selected values
TARA x
Activating function Tare - for Channels A - H
TAR.VSE
Activating function Tare - for all channels
TAR.AKT
Activating function Tare - for current channel
PREP. 1
Switching channels on display - up
PREP. -1
Switching channels on display - down
ULOZ
Starting recording of the measured data into device memory
NUL. PA.
Resetting memory of the measured data
OM Link
Company communication interface for operation, setting and update of device firmware
OM Link program is also designed for visualization and filing of meas. values from more instruments
Instrument accuracy and functionality
Temperature coefficient
50 ppm/°C
Accuracy
±0,02 % of range + 1 digit
(for projection 9999 and 5 measur./s)
Accuracy of cold junction measurement
±1,5°C
Rate
0,1…40 measur./s
Overload capacity
2x; 10x (t < 30 ms)
Resolution (RTD, T/C)
1°C, 0,1°C
Wire compensation (RTD, OHM)
< 30 Ohm
Cold junction compensation
nastavitelná -20°…99°C, automatická
Linearization
linear interpolation in 256 points and 8 tables (only via OM Link)
Digital filters
arithmetic mean
from 2…100 measurements
floating mean
from 2…30 measurements
exponential mean
from 2…100 measurements
rounding
setting projection step for display
Functions
Min/max value
registration of min./max. value achieved during measurement
Tare
designed to reset display on non-zero input signal
Fixed tare
preset fixed tare
Peak value
display shows only max. or min. values
Math. functions
polynom, 1/x, logaritmus, exponenciál, odmocnina, mocnina, sin x
Math. operations between inputs
sum, difference, product, and quotient
Data record
Measured data recording into the memory
RTC
period - 1 s…1 day, time-date-display value, < 266k data, 15 ppm/°C
FAST
40 records/s, display value, < 8k data
Not available in combination with with the data output MODBUS
Watch-dog
reset after 400 ms
Calibration
at 25°C and 40 % r.h.
Comparators
Type
Digital, menu adjustable, contact connect. < 30 ms
Mode
Hysteresis
switch. point, hysteresis band "Mez ± 1/2 Hys." and time (0 ... 99.9 s) determ. switching delay
From-To
output interval ON and OFF
Dose
period, its multiples and time (0 ... 99.9 s), during which the output is active
Relay idle state
rozepnutý nebo sepnutý - nastavitelný v menu
Output
4x or 8x relay, switch on contact (250 VAC/30 VDC, 3 A)
Data outputs
Protocol
ASCII, MESSBUS, MODBUS - RTU, PROFIBUS DP
Data format
8 bits + no parity + 1 stop bit (ASCII)
7 bits + even parity + 1 stop bit (Messbus)
Rate
600…230 400 Baud
0,0096…12 MBaud (PROFIBUS)
RS 232
izolovaná
RS 485
izolovaná, adresace max. 31 přístrojů
Analogue outputs
Type
Isolated, programmable with a 16-bit D / A converter, type and range are menu selectable
Nonlinearity
±0,1 % of range
Temperature coefficient
15 ppm/°C
Rate
response to value change < 1 ms
Range
0…2 V, 0…5 V, 0…10 V, ±10 V, 0…5 mA, 0…20 mA, 4…20 mA
Compensation
600 Ohm/12 V
Error state
at range of 4...20mA
error message indication (<3.0 mA)
Detection of current loop interruption
Power supply
Power supply
10…30 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
80…250 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
Current draw
< 6,7 W/7 VA
Power supply protection
Power supply is protected by a fuse inside the instrument
Mechanical properties
Material
Noryl GFN2 SE1, non-inflammable UL 94 V-I
Dimensions
96 x 48 x 120 mm (w x h x d)
Panel cutout
90,5 x 45 mm (w x h)
Operating conditions
Connection
connector terminal board, cable section < 1,5/2,5 mm2
Stabilization period
within 15 minutes after switch on
Operating temperature
-20°…60°C
Storage temperature
-20°…80°C
Protection class
IP64 (front panel only)
El. safety
EN 61010-1, A2
Dielectric strength
4 kVAC within 1 min. between pow. supply and input
4 kVAC within 1 min. between pow. supply and data/anal. output
4 kVAC within 1 min. between input and relay output
2,5 kVAC within 1 min.between input and data/anal. output
Insulation resistance
for polution degree II, measuring cat. III.
power supply
670 V (ZI), 300 V (Di)*
input, output, PN
300 V (ZI), 150 V (Di)*
EMC
EN 61326-1
Seismic capacity
IEC 980: 1993, par.6
SW validation
Compliance with IEC 62138, 61226, class B, C
Explanatory notes

 PI - Primary insulation, DI - Double insulation

Images
Connection
Dimensions and installation
To assemble the order, first select the desired instrument configuration.
OMU 408UNI-??????-??
Power supply
Any
?
Any
?
10...30 V AC/DC
0
80...250 V AC/DC
1
No. of inputs
Any
?
Any
?
4 vstupy
0
8 vstupů
1
Comparators
Any
?
Any
?
žádné
0
4x relé (spínací)
1
8x relé (spínací)
2
Output
Any
?
Any
?
žádný
0
Analogový
1
RS 232
2
RS 485
3
PROFIBUS
4
Data recording
Any
?
Any
?
ne
0
RTC + data
1
Rychlá data
2
Display color
Any
?
Any
?
červená
1
zelená
2
specification
Any
??
Any
??
Standard
00
ASE ZVN - bez varistorů na relé
02
Selected combination is invalid
Alternatives in stock
OMU 408UNI-000101-00In stock < 5 pcs
OMU 408UNI-100001-00In stock < 5 pcs
OMU 408UNI-111301-00In stock < 5 pcs
OMU 408UNI-111411-00In stock < 5 pcs

Datasheets

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CAD

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