Omega RDA Specification

RDA Series

The RDA Paperless Recorder Series is a value priced
large format touch screen datalogger that integrates
measurement, display, alarm, and datalogging into one
slim instrument. The RDA Series is available in both 5''
and 7'' display models. The instrument is easy to install
and requires no external HMI. Depending on the model,
the RDA Series can support 2, 4 or up to 6 input channels
with either thermocouple or RTD input type with 0.2% FS
measuring accuracy. Each channel can have indepen­dent input specification, with square-root, multiplication,
addition and subtraction. All channels are equipped with
digital adjustment and filtering functions.
The RDA Series provides a real time trend records via
trend graph or bar graph. History and alarm records can
be reviewed in the logger itself with 150MB of internal
storage or exported to external USB storage device. The
RDA-740 and RDA-760 models have a slim installation
depth of 40mm of for use where installation space is
limited.

Features

• Color TFT Touch Screen Display: 5'' or 7''

• 2 Isolated Inputs for Thermocouple or RTD models

• 2 Internal Alarm setpoints per channel

• Maximum sample rate of 1 Hz

• Exportable data via USB Drive

• Low power consumption (≤5W)

RDA520-TC
RDA520-RTD

RDA740-TC

RDA740-RTD

RDA760-TC

RDA760-RTD

Omega model RDA-520-RTD RDA-520-TC RDA-740- RTD RDA-740- TC RDA-760- RTD RDA-760- TC

Dimensions

Diagonal
Display Size

External Size

Installation
Opening Size

Display

Color

Resolution

Backlit

Input Method

Touch Screen

5 inches (127mm) 7 inches (177.8mm)

5.71 x 4.13 x 3.94 inches
(145 x 105 x 100mm)
(Width*Height*Depth)

5.71 x 4.13 x 3.94 inches
(145 x 105 x 100mm)
(Width*Height*Depth)

Four-wire Resistive

7.99 x 6.10 x 1.57 inches (203 x 155 x 40mm)
(Width*Height*Depth)

7.56 x 5.47 inches (192 x 139mm) (Width*Height)

TFT True Color

800*480

Long-life LED

Screen Touching

1

RDA Series

Omega model RDA-520-RTD RDA-520-TC RDA-740- RTD RDA-740- TC RDA-760- RTD RDA-760- TC

Memory

Storage

Recording Interval
(seconds)

Instrument Input

Input Type

Measurement
Accuracy

Two 2-wire RTD
Pt100, Cu50,
0-80ohm,
0-400ohm, etc
(Two inputs
share one
common port)

0.2%FS ±1 digit
/ ±0.3%FS ±1
digit (only for
Cu50)

Two thermo­couples
K, S, R, E, J,
T, B, N,
WRe5-WRe2
6

±0.2% FS ± 1
digit.
Internal cold
junction
compensation
(CJC) will
require an
additional 1°C
CJC error to
be taken into
consideration.
The stated
accuracy for
type B
thermocouple
is only
guaranteed
between 600~
1800°C
(+1112 ~
+3272°F).

150MB

1, 2 3, 4, etc. User Defined

Four 2-wire
RTD
Pt100, Cu50,
0-80ohm,
0-400ohm,
etc
(Every two
inputs share
one common

±0.2%FS ±1
digit /
±0.3%FS ±1
digit (only for
Cu50)

Four thermo­couples
K, S, R, E, J,
T, B, N,
WRe5-WRe2
6

0.2% FS ± 1
digit.
Internal cold
junction
compensation
(CJC) will
require an
additional 1°C
CJC error to be
taken into
consideration.
The stated
accuracy for
type B thermo­couple is only
guaranteed
between 600~
1800°C (+1112
~ +3272°F).

Six 2-wire
RTD
Pt100, Cu50,
0-80ohm,
0-400ohm,
etc
(Every Two
inputs share
one common

0.2%FS ±1
digit / 0.3%FS
±1 digit (only
for Cu50)

Six thermo­couples
K, S, R, E, J,
T, B, N,
WRe5-WRe2
6

0.2% FS ± 1
digit.
Internal cold
junction com­pensation
(CJC) will
require an
additional 1°C
CJC error to be
taken into
consideration.
The stated
accuracy for
type B thermo­couple is only
guaranteed
between 600~
1800°C (+1112
~ +3272°F).

Response Time

Temperature Drift

≤1.5 seconds (digital filter parameter dL is set as 0 or 1)

≤0.01%FS/°C (Typical 50ppm/°C)

2

RDA Series

Omega model RDA-520-RTD RDA-520-TC RDA-740- RTD RDA-740- TC RDA-760- RTD RDA-760- TC

Measuring
Range

Pt100:

-200 ~ +800°C
(-328~ +1472°F)
,
Cu50:

-50~ +150°C
(-58 ~ +302°F)

K

-50 ~ +1300°C
(-58 ~ +2372°F),
S

-50 ~ +1700°C
(-58 ~ 3092°F) ,
R

-50 ~ +1700°C
(-58 ~ 3092°F,
T

-200 ~ + 350°C
(-328 ~ +662°F),
E
0 ~ +800°C
(+32 ~ 1472°F) ,
J
0 ~ +1000°C

(+32 ~ 1832°F),

B
+200 ~ +1800°C

(+392 ~ 3272°F),

N
0~ +1300°C
(+32 ~ 2372°F),
WRe3~WRe5
0 ~ +2300°C
(+32 ~ +4172°F),
WRe5~WRe26
0~+2300°C
(+32 ~ +4172°F)

Pt100:

-200 ~ +800°C
(-328~

+1472°F) ,

Cu50:

-50~ +150°C

(-58 ~ +302°F)

K

-50 ~ +1300°C
(-58 ~ +2372°F),
S

-50 ~ +1700°C
(-58 ~ 3092°F) ,
R

-50 ~ +1700°C
(-58 ~ 3092°F,
T

-200 ~ + 350°C
(-328 ~ +662°F),
E
0 ~ +800°C
(+32 ~ 1472°F) ,
J
0 ~ +1000°C
(+32 ~ 1832°F),
B
+200 ~ +1800°C
(+392 ~ 3272°F),
N
0~ +1300°C
(+32 ~ 2372°F),
WRe3~WRe5
0 ~ +2300°C
(+32 ~ +4172°F),
WRe5~WRe26
0~+2300°C
(+32 ~ +4172°F)

Pt100:

-200 ~ +800°C
(-328 ~
+1472°F) ,
Cu50:

-50~ +150°C
(-58 ~ +302°F)

K

-50 ~ +1300°C
(-58 ~ +2372°F),
S

-50 ~ +1700°C
(-58 ~ 3092°F) ,
R

-50 ~ +1700°C
(-58 ~ 3092°F,
T

-200 ~ + 350°C
(-328 ~ +662°F),
E
0 ~ +800°C
(+32 ~ 1472°F) ,
J
0 ~ +1000°C
(+32 ~ 1832°F),
B
+200 ~ +1800°C
(+392 ~ 3272°F),
N
0~ +1300°C
(+32 ~ 2372°F),
WRe3~WRe5
0 ~ +2300°C
(+32 ~ +4172°F),
WRe5~WRe26
0~+2300°C
(+32 ~ +4172°F)

General Specification

Electromagnetic
Compatibility (EMC)

Isolation Withstanding
voltage

Power Supply

Power Consumption

Operating
Environment

Storage Temperature

Unit Weight

Cooling Method

4KV/5KHz according to IEC61000-4-4 (Electrical Fast Transient); 4KV according to
IEC61000-4-5 (Electrical Surge).

Among power, relay contact or signal terminals 2300VDC. Among isolated
electroweak terminals 600V

100~240VAC, -15%, +10% / 50~60Hz

≤5W

Temperature -10~+60°C (+14 ~ +140°F) Humidity ≤ 90%RH

-20 ~ +80°C (-4 ~ +176°F)

1.21 lbs (0.55kg) 1.54 lbs (0.7kg)

Natural Air Cooling

3