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

• comparators

• data output

• analog output

• measured data record

• three-color display - 20 mm
  
  Technical data: 
   

  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

  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

  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

  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
  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)

  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
  

  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

  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)
  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

  isolated

  RS 485

  isolated, addressing max. 31 instruments
  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
  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

  Current draw

  < 9,4 W/9,2 VA

  Power supply protection

  Power supply is protected by a fuse inside the instrument
  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

  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
  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)