OM 402UNI
4-DIGIT MULTIFUNCTION INSTRUMENT
The OM 402 model series are 4-digit panel programmable instruments designed for maximum usefulness and user comfort while maintaining their fair price. Type OM 402UNI is a multifunction instrument with the possibility of configuration for 8 different input options, easily configurable in the instrument menu. By further options of input modules it is feasible to measure larger ranges of DC voltage and current or to increase the number of inputs up to 4 (applies for PM). The instrument is based on a single-chip microcontroller with a multichannel 24-bit sigma-delta converter, which ensure good accuracy, stability and easy operation of the instrument.
-
4-digit programmable projection
-
multifunction input UNI (DC, PM, RTD, T/C, DU)
-
digital filters, tare, linearization, excitation
-
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
-
three-color display - 20 mm
Input
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
0…100 Ohm
0…1 kOhm
0…10 kOhm
0…100 kOhm
0…1 kOhm
0…10 kOhm
0…100 kOhm
Connection
2, 3 or 4-wire
RTD
Type
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
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
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
T/C
Type
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
Potentiometer power supply
2 VDC/6 mA, potentiometer resistance > 500 Ohm
Expansion "A" (DC ranges)
Range
menu selectable
±0,1 A
<300 mV
Input I
±0,25 A
<300 mV
Input I
±0,5 A
<300 mV
Input I
±1 A
<30 mV
Input I
±5 A
<160 mV
Input I
±100 V
20 MOhm
Input U
±250 V
20 MOhm
Input U
±500 V
20 MOhm
Input U
Expansion "B" 3x PM
Range
menu selectable
0…20 mA
<400 mV
Input 2, 3, 4 - I
4…20 mA
<400 mV
Input 2, 3, 4 - I
±2 V
1 MOhm
Input 2, 3, 4 - U
±5 V
1 MOhm
Input 2, 3, 4 - U
±10 V
1 MOhm
Input 2, 3, 4 - U
±40 V
1 MOhm
Input 2, 3, 4 - U
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 |
| B.HESL. | Blocking access to the LIGHT/PROFI menu |
| TARA | Tare activation |
| NUL. TA. | Resetting tare |
| NUL. M.M. | Resetting Min/Max. value |
| ULOZ | Data record activation (extention of RTC/FAST) |
| NUL. PA. | Resetting memory (extention of RTC/FAST) |
| KAN. A | Value display "Channel A" |
| FIL. A | Value display "Channel A" after processing by a digital filter |
| MAT. FN. | Value display "Mathematical function" |
| PREP. | Switching channels (extention "B") |
Projection
Display range
-99999…999999, single-coloured 14-segment LED
-999…9999, 3-coloured 7-segment LED
-999…9999, 3-coloured 7-segment LED
Display height
14 mm, 20 mm
Display colour
red, green, red/green/orange
Signalizing LED
| 1, 2, 3, 4 | Limits L1, L2, L3, L4 (red) |
| T | Tare (green) |
| M | Min./Max. value (green) |
| A, B, C, D | Channels A, B, C, D (orange) |
Description
the last two digits of the display can be used to display measured variables (only 14 mm display)
Decimal point
menu adjustable - fixed or floating
Display brightness
menu adjustable
Displayed values
| Kan A | Value from channel A |
| Fil. A | Value from channel A 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
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. TA. | Tare reset |
| MENU | Direct access to the selected menu item |
| DOC. H. | Temporary projection of selected values |
| TARA | Activating function Tare |
| 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
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
±0,1 % of range + 1 digit
±0,15 % of range + 1 digit (RTD, T/C)
(for projection 9999 and 5 measur./s)
±0,15 % of range + 1 digit (RTD, T/C)
(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) - not for > 200 V and 5 A
Resolution (RTD, T/C)
1°C, 0,1°C, 0,01°C
Wire compensation (RTD, OHM)
< 30 Ohm
Cold junction compensation
adjustable -20°…99°C, automatic
Linearization
linear interpolation in 50 points (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
| Tare | designed to reset display on non-zero input signal |
| Fixed tare | preset fixed tare |
| Min/max value | registration of min./max. value achieved during measurement |
| Peak value | display shows only max. or min. values |
Math. functions
polynom, 1/x, logarithm, exponential, power, root
Math. operations between inputs
sum and quotient
Data record
Measured data recording into the memory
Not available in combination with with the data output MODBUS
| RTC | period - 1 s…1 day, time-date-display value, < 266k data, 15 ppm/°C |
| FAST | 40 records/s, display value, < 8k data |
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 |
Output
1x relay, switch-over contact (250 VAC/30 VDC, 3 A)
2x relay, switch-over contact (250 VAC/30 VDC, 3 A)
1x relay, switch on contact (250 VAC/30 VDC, 3A)
2x relay, switch on contact (250 VAC/30 VDC, 3 A)
2x bistable relay (250 VAC/30 VDC, 3A)
3x relay, 2x switch on + 1x switch-over contact (250 VAC/30 VDC, 3A)
4x relay, 2x switch on + 2x switch-over contact (250 VAC/30 VDC, 3A)
2x open collector (30 VDC/100 mA)
4x open collector (30 VDC/100 mA)
2x open collector (30 VDC/100 mA) + 2x relay, CO contact (250 VAC/30 VDC, 3 A)
2x SSR (250 VAC/1 A)
2x relay, switch-over contact (250 VAC/30 VDC, 3 A)
1x relay, switch on contact (250 VAC/30 VDC, 3A)
2x relay, switch on contact (250 VAC/30 VDC, 3 A)
2x bistable relay (250 VAC/30 VDC, 3A)
3x relay, 2x switch on + 1x switch-over contact (250 VAC/30 VDC, 3A)
4x relay, 2x switch on + 2x switch-over contact (250 VAC/30 VDC, 3A)
2x open collector (30 VDC/100 mA)
4x open collector (30 VDC/100 mA)
2x open collector (30 VDC/100 mA) + 2x relay, CO contact (250 VAC/30 VDC, 3 A)
2x SSR (250 VAC/1 A)
Analogue outputs
Type
Isolated, programmable with a 16-bit D / A converter, type and range are menu selectable
Temperature coefficient
15 ppm/°C
Nonlinearity
±0,1 % of range
Rate
response to value change < 1 ms
Ranges
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, 1 000 Ohm/24 V
Error state
at range of 4...20mA
error message indication (<3.0 mA)
Detection of current loop interruption
error message indication (<3.0 mA)
Detection of current loop interruption
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)
7 bits + even parity + 1 stop bit (Messbus)
Rate
600…230 400 Baud
0,0096…12 MBaud (PROFIBUS)
0,0096…12 MBaud (PROFIBUS)
RS 232
isolated
RS 485
isolated, addressing max. 31 instruments
Sensor excitation
Adjustable
5…24 VDC/max. 1,2 W
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
80…250 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
Current draw
< 9,4 W/9,2 VA
Power supply protection
Power supply is protected by a fuse inside the instrument
Mechanical properties
Dimensions
96 x 48 x 120 mm (w x h x d)
Panel cutout
90,5 x 45 mm (w x h)
Material
Noryl GFN2 SE1, non-inflammable UL 94 V-I
Operating conditions
Connection
connector terminal board, cable section < 1,5/2,5 mm2
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
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
Images
Connection
Dimensions and installation
Datasheets
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
Datasheet OM402
Datasheet OM402
Datasheet OM402
Katalogový list OM402
|
PDF
|
2015.1 |
|
Download |
|
Datasheet OM402
Datasheet OM402
Datasheet OM402
Katalogový list OM402
|
PDF
|
2014.2 |
|
Download |
|
Datasheet OM402
Datasheet OM402
Datasheet OM402
Katalogový list OM402
|
PDF
|
2013.2 |
|
Download |
|
Datasheet OM402
Datasheet OM402
Datasheet OM402
Katalogový list OM402
|
PDF
|
2012.2 |
|
Download |
|
Datasheet OM402
Datasheet OM402
Datasheet OM402
Katalogový list OM402
|
PDF
|
2010.1 |
|
Download |
|
Datasheet OM402
Datasheet OM402
Katalogový list OM402
|
PDF
|
2008.1 |
|
Download |
|
Datasheet OM402
Katalogový list OM402
|
PDF
|
2006.2 |
|
Download |
|
Datasheet OM402UNI
Katalogový list OM402UNI
|
PDF
|
2023.1 |
|
Download |
|
Datasheet OM402UNI
Datasheet OM402UNI
Datasheet OM402UNI
Katalogový list OM402UNI
|
PDF
|
2020.1 |
|
Download |
| Katalogový list OM402 |
PDF
|
2009.1 | cs | Download |
| Katalogový list OM402 |
PDF
|
2007.1 | cs | Download |
User manuals
Application notes
Certificates
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
Certificate Declaration_17050_OM402
Certifikát Prohlaseni_17050_OM402
|
PDF
|
2022 |
|
Download |
|
Certificate Seismic_test_OM402UNI
Certifikát Seizmicka_zkouska_OM402UNI
|
PDF
|
2007 |
|
Download |
|
Certificate EU_Declaration_OM402
Certifikát EU_Prohlášení_OM402
|
PDF
|
2024 |
|
Download |
Firmware
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
| OM 402UNI 78-607 |
HEX
|
2018 | xx | Download |
Software
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
GSD OM-Profibus
GSD OM-Profibus
|
ZIP
|
2020 |
|
Download |
| GSDML OM-Profinet |
ZIP
|
2020.2.33 | xx | Download |
| GSDML OM-Profinet |
ZIP
|
2024.2.33 | xx | Download |
ISOLATED TRANSDUCER • USB < > OM INSTRUMENTS
Small compact transducer OM LINK USB with cable ensures safe and comfortable galvanically isolated connection between your computer and ORBIT MERRET instruments.