Instrument Description - Orbit Merret OMB 451UNI Manual

2

INSTRUMENT DESCRIPTION

2.1 DESCRIPTION
The OMB 451/452 model series are programmable, three-color panel bargraphs with auxiliary display and adjustable
LCD scale. The instruments are designed as dimensional replacement of the ZEPAKOMP instruments. Available are types
UNI, PWR and UQC.
Type OM 402UNI is a multifunction instrument with the option of configuration for 8 various 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 increase the number of inputs up to 4 (applies for PM).
The instrument is based on an 8-bit microcontroller with a multichannel 24-bit sigma-delta converter, which secures high
accuracy, stability and easy operation of the instrument.
The OMB 451/452 is a multifunction instrument available in following types and ranges
type UNI
DC:
PM:
OHM:
RTD-Pt:
RTD-Cu:
RTD-Ni:
T/C:
DU:
type UNI, option A
DC:
type UNI, option B (expansion by 3 more inputs)
PM:
PROGRAMMABLE PROJECTION
Selection:
Measuring range:
Setting:
LCD scale:
Projection:
COMPENSATION
of conduct:
of conduct in probe:
of CJC (T/C):
LINEARIZATION
Linearization:*
DIGITAL FILTERS
Floating average:
Exponen.average:
Rounding:
MATHEMATIC FUNCTIONS
Min/max. value:
Tare:
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4 INSTRUCTIONS FOR USE OMB 450UNI
0...60/150/300/1 200 mV
0...5 mA/0...20 mA/4...20 mA/±2 V/±5 V/±10 V/±40 V
0...100 Ϊ/0...1 kΪ/0...10 kΪ/0...100 kΪ/Auto
Pt 50/100/Pt 500/Pt 1 000
Cu 50/Cu 100
Ni 1 000/Ni 10 000
J/K/T/E/B/S/R/N/L
Linear potentiometer (min. 500 Ϊ)
0...1 A/0...5 A/120 V/±250 V/±500 V
3x 0...5 mA/0...20 mA/4...20 mA/±2 V/±5 V/±10 V/±40 V
of type of input and measuring range
adjustable as fixed or with automatic change
manual, optional projection on the display may be set in the menu for both limit values of the input
signal , e.g. input 0...20 mA > 0...850,0
illuminated and freely programmable
-9999...9999 (-99999...999999)
in the menu it is possible to perform compensation for 2-wire connection
internal connection (conduct resistance in measuring head)
manual or automatic, in the menu it is possible to perform selection of the type of thermocouple and
compensation of cold junctions, which is adjustable or automatic(temperature at the brackets)
by linear interpolation in 50 points (solely via OM Link)
from 2...30 measurements
from 2...100 measurements
setting the projection step for display
registration of min./max. value reached during measurement
designed to reset display upon non-zero input signal
* only for types DC, PM, DU