Specifications - Omega RD2800 Series User Manual

22. SPECIFICATIONS

1
Input Specifications
Number of measuring points: 1, 2, 3 and 4 points
Input signals: DC voltage (mV) ...±13.8, ±27.6, ±69.0, ±200
DC voltage (V)...±2, ±5, ±10, ±20, ±50 (Built-
in voltage divider for ±5 V or more)
DC current...Available by adding shunt
Thermocouple...B, R, S, K, E, J, T, N,
NiMo-Ni, CR-AuFe, PtRh40-PtRh20
Resistance thermometer...Pt100 (1),
Range: Program range number and printing range for each
channel with key operation. (See Section 8.2 for
range No. list)
Scale: Program minimum and maximum values with key
operation.
Programming range...-9999 to 99999
Decimal point ... Program arbitrary
Measuring range: Refer to the list of range No. in Section
8-2.
Minimum printing range: Refer to the following table
DC
1/5 or higher than the measuring range.
voltage
2/5 or higher than the measuring range when
converted into electromotive force.
Thermo- (In the case of range Nos. with minus
couple measuring ranges, a temperature of 0°C or
higher is specified as the lower-limit
measuring value.)
Resistance Pt100
thermometer Pt50
Accuracy rating: Refer to item
condition).
Temperature drift: ±0.01% full scale/°C (converted into
reference range)
Measuring cycle: About 100 msec (CH1 to CH4 )
Reference junction compensation: Inside (enable) or
external (disable) is selectable.
Reference junction compensation accuracy:
K, E, J, T, N and Platinel II...±0.5°C or less
Other than the above*... ±0.1°C or less
*Except PtRh40-PtRh20
Input resolution: Approx. 1/56000 (converted into reference
range)
Burnout: Effective input...
thermometer
Programming range ...Selection from up-scale,
down-scale or disable for each channel
Allowable signal source resistance:
DC voltage inputs, thermocouple inputs
Resistance thermometer inputs
* Without burnout
Input resistance: Thermocouple input ...About 8MΩ
DC voltage inputs (range of ±2 V or less)
DC voltage inputs (range of ±5 V or less)
±500
resistor (option)
WRe5-WRe26, W-WRe26,
Platinel II, U, L
Pt100 (2), JPt100, Pt50, Pt-Co
100°C span or more
200°C span or more
6 (at reference operating
Thermocouple, resistance
...1kΩ or less*
...10Ω or less
...About 8MΩ
...About 1MΩ
－１２６－
Maximum input voltage
DC voltage
±10 V DC or less (range of ±2 V or less)
inputs,
±60 V DC or less (range of ±5 V or less)
thermocouple
Resistance
±6 V DC or less
thermometer
Input correction: Shift programming for each channel
Input filter: Program primary delay filter
1 to 10 sec. and "0" (none) for each channel.
Maximum common mode voltage: 30VAC
Common mode rejection ratio: 140 dB or more (50/60 Hz)
Series mode rejection ratio: 50 dB or more (50/60 Hz)
Terminal board: Detachable and removable for wiring
2
Printing
Printing accuracy: Measuring accuracy + ±.0.3% of printing
range (under the reference operation
condition)
Printing dead and: 0.2% of printing range
Printing system:
Trace printing... Disposable cartridge pen
Digital data printing .... Plotter pen
Step response: RD200 ... 1 sec. or less (90% response)
RD2800 ... 1.5 sec. or less (90% response)
Print color: Trace printing .... 1
Digital data printing ... Purple
<<Digital printing>>
Periodic : Printing of time, channel No., measured
data printing values and engineering unit with
programmed interval
Digital data : Printing of time, channel No., measured
printing values and engineering unit with trace
printing on demand
Year, Month, : Printing of year, month, day and time when
day, time, time turning on the power. Printing time line and
line time every on the hour. Printing year, moth
and day at 00:00 and every specific interval
Channel No., : Printing of scale, channel No. and tag (only if
scale, tag ﾞ
they are programmed) with every specific
interval
Chart speed : Printing of chart speed with every specific
interval
Alarm : Printing of time, channel No., alarm type and
Activation/ alarm level when an alarm activates. Printing
Reset time, channel No. and alarm level when the
alarm is reset. Memory volume is max. 48
data
Programming : Marking when changed parameters are
change mark stored
POC mark : Marking when time-axis synchronization is
programmed
List printing : Printing of parameters (list 1 or 2) on demand
List 1: Chart speed, range/printing range,
scale, subtract printing, periodic data
printing, printing format and alarm
List 2: Chart speed (3 speeds), alarm output,
time-axis synchronization, remote
contacts and math expression
List 3: All parameters (List 1 + List 2)
st nd
pen (Red), 2 pen (Green),
rd th
3 pen (Blue), 4 pen (Brown)