Omega Products DR231-00-1 User Manual

Input Hybrid Recorders

10, 20 or 30

DR231 and DR241 Series

Starts at

$

4935

*Optional

⻬ High-Speed Scanning

and Recording on
250 mm (10") Chart

⻬ 10-Color Recording
⻬ Thermocouple,

RTD, Voltage Inputs

⻬ Optional Floppy Drive

for Data Storage

⻬ Easy-to-Carry,

Lightweight Design

⻬ Benchtop in DR231
⻬ Panel Mount in DR241

* See page S-44 to order.

DR231-12-1, $5555.

The OMEGA®DR231 and DR241
portable hybrid recorders offer
high-speed scanning of up to
30 channels in 2 seconds. They
have a wide variety of recording
functions including analog trend in
10 colors on an effective width of
250 mm. Digital measured values,
various messages, zone recording,
and partially compressed and
expanded recording are
documented to support clear
interpretation of data. The DR231
and DR241 Series incorporate a
large 3-line vacuum fluorescent
display which can be used as a
process monitor, enabling you
to readily view data or check
alarm status, even from a remote
location. The units are also
interactively configured using
the easily read display.

S-41

Specifications

Number of Inputs:

Up to 10, 20 or 30 points

A/D Resolution: ±20,000
Reference Junction Compensation

Error: ±1°C/1.8°F (R, S, B, C, W),

±0.5°C/0.9°F (K, J, T, E, N, U, L,
CHROMEGA

Scan Cycle Time: 2 to 60 sec
selectable (2, 3, 4, 5, 6, 10, 12, 15,
20, 30, 60 sec)
A/D Integration Time: 20 msec
(50 Hz), 16.7 msec (60 Hz), and
100 msec (10 Hz) (50/60 Hz) selectable

Input Impedance: >10 MΩ on 2V
or lower ranges and T/C; approx
1 mΩ on 6V or higher ranges

Input Bias Current: <10 nA
Thermocouple Burnout Protection:

ON or OFF selectable for each channel

Temperature Coefficient:

Zero Drift: 0.01% of range/°C,
Full Span: 0.01% of range/°C

Max Input Voltage: ±10 Vdc
(50V on 6V or greater ranges)

®

vs. Au7% Fe)

DR241-12-1, $5575, shown

Extended Warranty

Program

SM

smaller than actual size.

Common Mode Voltage:

250 Vrms AC (50 or 60 Hz)

Common Mode Rejection:

120 dB (50 or 60 Hz ±0.1%)

Normal Mode Rejection:

40 dB (50 or 60 Hz ±0.1%)
Max between Chan: 150 Vrms ac,

(50 or 60 Hz except RTD)

Printout

Printing Technique: Raster scan using

a wire-dot printer and 10-color ribbon

Recording Colors
Analog Trend Mode:

Trend Recording: Purple, red, green,

blue, brown, black, navy blue,
yellowish green, red-purple, orange
(can be specified for each channel)

Digital printout: Black
Alarm printout: Red (alarm

release mark is blue)

Logging Mode: Purple
Effective Recording Span:

250 mm (9.9") for trend
Chart: Z-fold chart, 342.5 mm W x

30 m L (13.5 x 98')

Recording Resolution: ±0.1 mm
Recording Accuracy: Measurement

accuracy plus (±0.1% of effective
recording span)

Printout Format: Analog trend/analog
trend plus digital datalogging

Chart Speed: 1 to 1500 mm/hr
Chart Drive: Pulse motor drive

Chart Speed Accuracy: ±0.1%
Recording Modes: Normal, print on

alarm, chart speed/interval changes set
by event/action function

Standard Printing Functions:

engineering units (up to 6
alphanumerics), tag number (up to
7 alphanumerics), alarms (channel
number, alarm types, and the time of
alarm On/Off), scale markings (0/100%,
0/50/100%, or 20% steps), program list,
manual, message (max 16 characters),
and header (60 characters x 5 lines)

Recording Interval for Digital Printout
and Chart Speed:

When the recording interval is
SINGLE: [Chart speed (mm/hour)] x

trend recording interval must not
exceed 3000)

When the recording interval is
MULTIPLE: Set by timerManual

Printout: One scan’s

worth of data can be digitally
printed by a key operation or
event/action function

No. of Digital Print Rows

Chart Speed 1 Row 2 Row 3 Row 4 Row

10 to 24 mm/h 12 643

25 to 49 mm/h 4221

50 to 99 mm/h 2111

100 to 1500 mm/h 1111

S-42

Zone Recording: Recording width and

recording positions (0% and 100%
positions) can be set in mm units for
each channel in case of trend recording

Display and Controls

Display: 5 x 7 dot matrix, 3 row,

vacuum fluorescent; 1st row 22 large,
2 and 3rd, 40 small characters

Data Display: Measured data
(tag number, channel number,
alarm status, measured value,
engineering unit), bar graph, clock,
alarm status, relay status,
programming data, battery status, and
recording format (trend/log)

Scaling Range: -30,000 to 30,000
Calculation: Difference between

any channels or moving average
for every 2 to 64 scans

Internal Memory: 10-yr lithium battery
back up; 512 KB SRAM with floppy
disc drive option

Optional Memory: 3.5" floppy drive;

1.4 MB or 720 K

OMEGACARESMextended warranty program

is available for models shown on this page.

Ask your sales respresentative for full details

when placing an order. OMEGACARE

covers parts, labor and equivalent loaners.

SM

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