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Technical data
OM 402PID
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OM 402PID

The OM 402 model series is a 4 digit programmable versatile panel instrument. It is based on a fast single chip microcontroller with a multichannel 24bit sigma-delta converter. The instrument comes with 8 various input options which are easily configurable in the instrument's menu.

Technical data

INPUT
Measured unit DC voltage
DC current
Resistivity
Temperature
Linear potentiometr
Measuring range
DC:±60 mV / ±150 mV / ±300 mV / ±1 200 mV
PM:0…5 mA / 0…20 mA / 4…20 mA / ±2 V / ±5 V / ±10 V / ±40 V
OHM:0…100 Ω / 0…1 kΩ / 0…10 kΩ / 0…100 kΩ / Auto
RTD:Pt 50 / Pt 100 / Pt 500 / Pt 1 000
Cu:Cu 50 / Cu 100
Ni:Ni 1 000 / Ni 10 000
T/C:J / K / T / E / B / S / R / N / L
DU:Linear potentiometer (min. 500 Ω)
Expansion "A"
DC:±0,1 A / ±0,25 A / ±0,5 A / ±2 A / ±5 A / ±100 V / ±250 V / ±500 V
Expansion universal
UNI expansion by high DC ranges
UNI expansion by 3 inputs PM
Temperature coeficient 50 ppm/°C
Accuracy 0,1% of range + digit, applies to 10 measurements/s
0,15% of range + digit, applies to RTD, T/C and 10 measurements/s
values valid for measuring rate 10 measurements/s
Excitation 2,5 VDC / max. 5 mA
Measuring rate 0,1 / 0,2 / 0,5 / 1 / 2 / 5 / 10 / 20 / 40 measurements/s
Overload capacity 10x (t < 30 ms), 2x
Calibration at 25°C and 40% relative humidity
PROJECTION
Projection range -999…9999 (14 mm)
Type of sign projection 14-segment LED (14 mm)
7-segment LED (20 mm)
Number of signs 4 (14 mm)
Digit height 14 mm
Display color Red(14 mm)
Green(14 mm)
Decimal point Selectable in the menu or floating
Brightness Selectable in the menu
STANDARD FUNCTIONS
Instrument configuration The output from an A/D convertor is after being recalculated to pre-selected range made accessible as “fast value”. This value enters the linearization module and the digital filter. The output from the filter is available to be further processed by mathematical channels and output peripherals.
Compensation
Connection:automatic (3- and 4-wire)
Probes:internal connection (leads resistance in a probe housing)
Cold junction:manual or automatic
Digital filters Arithmetical average: from 2…100 measurements
Floating average: from 2…30 measurements
Exponencial average: from 2…100 measurements
Rounding: setting the rounding increments for display
Mathematic functions The channel of mathematic function allows for conversion of the filtered value by means of either of the predefined functions with 6 select parameters:
Polynomial, Inverse polynomial, Logarithmic function, Exponential function, Power function, Root, Furier's expansion.
Calculation of the predefined function may be followed by conversion by means of linearization table. The resultant value is available for processing in output peripherals.
Maximum and minimum The min/max channel allows to procure peak values since the instrument switch-on, or since their clearing. Minimum and maximum values are available for further processing in output peripherals.
Tare Zeroing the display when the input signal is not at zero.
Linearization Linear interpolation in maximum 50 points is available in two tables - prior to digital filter and after the calculation of mathematic function. Tables may be controled only via OM Link.
External control
Hold:blocking of the displey/instrument
Lock:blocking of the buttons
Tare:zeroing the display at none-zero input signal
switching amongst measuring inputs
Remove tare
Number of inputs of external control 3
Watch-dog 400 ms
COMPARATORS
Type of comparator Digital, settable in the menu, mode: Hysteresis / From…To / Batch, Switch-on / Switch-off
Limit -999…9999
Hysteresis 0…9999
Delay in switching 0…99,9 s
Maximum response delay 30 ms
Number and type of outputs none
1 relay with switch-on contact (form A) (250 VAC/30 VDC, 3 A)
DATA OUTPUT
DATA OUTPUT RS 232
RS 485
RS 485 - MODBUS RTU (* 1.Q/07)
RS 485 - PROFIBUS (* 1.Q/07)
Protocol ASCII / DIN MESSBUS / MODBUS RTU / PROFIBUS
Data format 8 bit, no parity, 1 stop bit (ASCII)
7 bit, even parity, 1 stop bit (DIN Mess-Bus)
Rate 600 / 1 200 / 2 400 / 4 800 / 9 600 / 19 200 / 38 400 / 57 600 / 115 200 / 230 400 Baud
9 600…12 000 kBaud (PROFIBUS)
ANALOGUE OUTPUT
ANALOGUE OUTPUT Programmable with maximum resolution of 10.000 segments.
Analog output is with galvanic separation and corresponds with the displayed data or measured value.
Output type and range is selectable in programming mode.
• compensation < 500 Ω/12 V
• compensation < 1000 Ω/24 V
Non-linearity 0,1 % of the range
Temperature coeficient 15 ppm/°C
Rate (maximum response delay) < 0,2 ms
Range 0…2 V / 0…5 V / 0…10 V / ±10 V / 0…5 mA / 0…20 mA / 4…20 mA (s chybovým hlášením I = 3 mA)
Compensation of conduct max to 500 Ohm, 1 000 Ohm,
EXCITATION
AUXILIARY VOLTAGE galvanic separation, settable by trimmer
Setting range 5…24 V
Tolerable load 1,2 W
DATA MEMORY
Type of memory RealTime - storing measured values stamped with date and time
Fast - fast collection of measured values, not date/time, memory osciloscope
Capacity max. 250 000 values (RealTime)
POWER SUPPLY
POWER SUPPLY 10...30V AC/DC isolated
80...250V AC/DC isolated
Maximum consumption 13,5 VA
Protection Fuse inside the instrument.
T630mA (80…250V)
T4A (10…30V)
MECHANICAL PROPERTIES
Material Noryl GFN2 SE1, incombustible UL 94 V-I, black colour
Dimensions 96 x 48 x 120 mm
Panel cutout 90,5 x 45 mm
OPERATING CONDITIONS
Connection connector terminals, lead < 2,5 mm2
Settling time 15 minutes after switch-on
Working temperature -20…60°C
Storage temperature -20…85°C
Cover IP65 (only the front pannel)
El. safety ČSN EN 61010-1, A2
Dielectric strength 4 kVAC for 1 min. between power supply and input
4 kVAC for 1 min. between power supply and data/analogue output
4 kVAC for 1 min. between input and relay output
2,5 kVAC for 1 min. between input and data/analogue output
Insulation resistance for pollution degree II, masuring cat. III.
AC power supply > 600 V (SI), 300 V (DI)
DC power supply, input/output, excitation > 300 V (SI), 150 (DI)
SI - Single isolation, DI - Double isolation
EMC ČSN EN 61326-1
Seismic compatibility ČSN EN 980: 1993, article. 6

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