OMX_333DC ISOLATED TRANSMITTER • DC V-A > U/I

The OMX 333 model series are simple DIN rail mountable programmable transmitters.
Type OMX 333DC is a transmitter used for measurements of higher DC voltage and current easily adjustable in the instrument´s menu.
The instrument is based on a single-chip microcontroller with a 16-bit A/D and D/A converter, which ensures good accuracy, stability and easy operation of the instrument.

• input: ±0,5/±1/±5 A; ±25/±50/±100/±200/±400 V

• output: 0…5/20 mA/4…20 mA
  0…2/5/10 V/±10 V

• digital filters, tare, linearization

• galvanic isolation: 2,5 kVAC

• width 25 mm

• DIN rail mounting

• power supply 10…30 VDC/24 VAC
  
  
  TECHNICAL DATA:

  
  
  
  Input

  DC

  Range

  menu selectable
  

  0…0,5 A

  < 15 mV

  Input 5

  0…1 A

  < 30 mV

  Input 5

  0…5 A

  < 150 mV

  Input 5

  ±25 V

  10 MOhm

  Input 1

  ±25 V

  10 MOhm

  Input 1

  ±100 V

  10 MOhm

  Input 1

  ±200 V

  10 MOhm

  Input 1

  ±400 V

  10 MOhm

  Input 1

  External inputs

  Number

  1 input, on contact

  Functions

  OFF	No function
  HOLD	Stopping measurement (option: Display - Analog output - Limits)
  TARA	Tare activation

  Projection

  Signalizing LED

  L1, L2	Limits L1, L2 (red)
  Lo, Hi	Signalization, settings and errors (red/green)

  Settings

  Control

  The instrument is controlled and set by two buttons and a DIP switch on the front panel

  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

  ±0,15 % of range (for 20 measur./s)

  Rate

  0,5…80 measur./s

  Overload capacity

  2x; 10x (t < 30 ms) - not for > 200 V and 5 A

  Linearization

  linear interpolation in 25 points (only via OM Link)

  Digital filters

  exponential mean	from 2…100 measurements
  rounding	setting projection step for display

  Functions

  Tare	designed to reset display on non-zero input signal

  Watch-dog

  reset after 500 ms

  Calibration

  at 25°C and 40 % r.h.
  Comparators

  Type

  Digital, menu adjustable, contact connect. < 50 ms

  Mode

  Hysteresis	switch. point, hysteresis band ''Mez ± 1/2 Hys.'' and time (0 ... 99.9 s) determ. switching delay
  Ready	output switching signals perfect status
  Error	output switching signals error status

  Output

  1x relay, switch-over contact (250 VAC/30 VDC, 3 A)
  2x relay, switch-over contact (250 VAC/30 VDC, 3 A)
  2x open collector (30 VDC/100 mA)
  4x open collector (30 VDC/100 mA)
  Data outputs

  Protocol

  ASCII

  Data format

  8 bits + no parity + 1 stop bit (ASCII)

  Rate

  600…230 400 Baud

  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

  Error state

  at range of 4...20mA
  error message indication (<3.0 mA)
  Detection of current loop interruption
  Power supply

  Power supply

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

  Current draw

  < 2 W/2 VA
  Operating conditions

  Connection

  connector terminal board, cable section < 1,5 mm2

  Stabilization period

  within 15 minutes after switch on

  Operating temperature

  -20°…60°C

  Storage temperature

  -20°…80°C

  Protection class

  IP20

  El. safety

  EN 61010-1, A2

  Dielectric strength

  2,5 kVAC within 1 min. between pow. supply, input and output
  2,5 kVAC within 1 min.between input and data/anal. output

  Insulation resistance

  for polution degree II, measuring cat. III.
  

  power supply

  550 V (ZI), 255 V (Di)*

  EMC

  EN 61326-1
  Mechanical properties

  Material

  PA 66, non-inflammable UL 94 V-I (blue)

  Dimensions

  25 x 79 x 110 mm (w x h x d)

  Installation

  DIN rail, width 35 mm