Omega Products OMB-DBK82 User Manual

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OMB-DBK81, OMB-DBK82, OMB-DBK83,
OMB-DBK84 7 & 14 Channel Low-Noise, High Accuracy,

Thermocouple and mV Expansion Options for the OMB-LOGBOOK
& OMB-DAQBOARD-2000 Series

⻬ Measures Type J, K, T, E,

R, S, B & N Thermocouples
as well as Voltage up to
±100mV

⻬ Low Noise, High Accuracy,

High Stability 100 kHz
Maximum Scan Rate,
Compatible with all
OMB-LOGBOOK and
OMB-DAQBOARD-2000
Series Operating at
Maximum Sampling Rates

⻬ High Noise Immunity
⻬ Open Thermocouple

Detection Per Channel

⻬ Over-Voltage Protection

Available in Four Different
Form-Factors:

⻬ 7 Channel Card with

On-Board Screw-Terminals,
Model OMB-DBK81

Model OMB-DBK81

$

549

The new OMB-DBK81/82/83/84 are
designed to provide very low noise
thermocouple and milli-volt
measurements, with high accuracy and
very close tracking between channels.
These new models provide
thermocouple accuracy of better than

0.5°C, and noise that is typically less
than 0.2°C p-p, with no digital
averaging required.

The performance of these new
OMB-DBK cards is enabled through
their use of very low-noise amplifiers
on every channel. Built-in cold junction

The OMB-DBK81 provides 7 differential
thermocouple/mV inputs, and installs into
any OMB-LOGBOOK and OMB-DBK
enclosure. The OMB-DBK81 provides
on-board screw-terminals for connection
of thermocouple/ mV signals directly to
the card.

The OMB-DBK82 provides 14 differential
channels of thermocouple/mV inputs, and
is physically taller than other OMB-DBK
cards. The OMB-DBK82 installs into an
OMB-DBK60 where it can be wired
directly to the mini-thermocouple
connector panels. Note that the OMB­DBK82 will not install into a single-height
slot in the OMB-DBK10. Further, the
OMB-DBK82 consumes two expansion
slots in the OMB-DBK41 10-slot
enclosure.

compensation and software-based
linearization automatically provides
you with quiet and stable temperature
measurements, with no need to deal
with the usual complexities associated
with thermocouple measurements.

All software that supports the
OMB-DAQBOARD-2000 Series and
OMB-LOGBOOK also support these
new OMB-DBK options, providing you
with accurate and stable temperature
readings on every channel. Four
different models are offered so you can
choose the one that best fits your
application.

⻬ 14 Channel Card with

On-Board Screw-Terminals,
Model OMB-DBK82

⻬ 14 Channel Card with

External Signal Connection
"Pod" with Removable
Screw-Terminals, Model
OMB-DBK83

⻬ 14 Channel Module

(Metal Housing with
Mini-Thermocouple
Connections)

OMB-DBK81, $549, shown

smaller than actual size

OMEGACARESMextended warranty
program is available for models
shown on this page. Ask your sales
representative for full details when
placing an order. OMEGACARE

SM

covers parts, labor and equivalent
loaners.

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H

The OMB-DBK83 provides
14 differential channels of input (like the
OMB-DBK82), but instead of on-board
screw-terminals, it includes an external
thermocouple/mV connection pod with
removable screw-terminals. This allows
the OMB-DBK83 to install into single-slot housings,
including the OMB-DBK10 and the OMB-DBK41.
The OMB-DBK83 also allows thermocouple connections
to reside away from the OMB-LOGBOOK or
OMB-DAQBOARD-2000, reducing the length of
thermocouple wire required. The OMB-DBK83 also
makes it easy to remove all signal connections by
disconnecting one cable from the pod, or by removing
the 15-pin screw-terminal connection. A 1 meter
(3ft) cable is included with the OMB-DBK83.

The OMB-DBK84 is a 14-channel module with
built-in mini-thermocouple connectors. The
OMB-DBK84 can mechanically attach directly
to any OMB-LOGBOOK or OMB-DBK modules
or enclosures. The OMB-DBK84 is best suited
for applications where mini-thermocouple
connectors are in use, and where quick
attachment and removal of thermocouples
is desired.

Specifications

System Connector: All OMB-DBK options

have a DB37 male, which mates with
P1 on the OMB-DAQBOARD-2000 or
OMB-LOGBOOK or other OMB-DBK options.

Thermocouple/mV Connector:
OMB-DBK81: Board-mounted screw-terminals
OMB-DBK82: Board-mounted screw-terminals
OMB-DBK83: External pod-mounted

removable screw-terminals

OMB-DBK84: Mini-thermocouple connectors
Input Types: thermocouple types J, K, T, E, R,

S, B, N; x100 (voltage)

Inputs:
OMB-DBK81: 7 differential

thermocouple/mV inputs
OMB-DBK82/83/84: 14 differential
thermocouple/mV inputs

Input Voltage Range: ±100mV*
Input Impedance: 40M⍀ (differential);

20M⍀ (single-ended)

Input Bandwidth: 4 Hz
Input Bias Current: 10nA typ
CMRR: 100dB typ
Maximum Working Voltage
(signal + common mode): ±10V
Over-Voltage Protection: ±40V
Power Requirements:
OMB-DBK81: 35mA max from ±15V;

2mA max from ±5V
OMB-DBK82: 60mA max from ±15V;
2mA max from ±5V
OMB-DBK83: 60mA max from ±15V;
2mA max from ±5V
OMB-DBK84: 60mA max from ±15V;
2mA max from ±5V
Operating Temperature: 0 to 50°C
(32 to 122°F)

Voltage Accuracy: ±(0.2% of rdg + 50 mV)
Minimum Resolution: 0.1°C for all

thermocouple types
Thermocouple Accuracy: Valid for one year,
18 to 28°C (see table)

* ±100mV with an OMB-LOGBOOK; ±50mV with an
OMB-DAQBOOK or DAQBOARD
**Accuracy conditions: using a DAQBOARD calibrated within 1 year; accuracy
numbers reflect total system absolute accuracies, including accuracy of the CJC
and DAQBOARD; exclusive of thermocouple errors; exclusive of noise; VCM=0

To Order

(Specify Model Number)

Model No. Price Description

OMB-DBK81 $549 7-channel thermocouple/mV card with

screw-terminal connections

OMB-DBK82 849 14-channel thermocouple/mV card with

screw-terminal connections

OMB-DBK83 999 14-channel thermocouple/mV card with external

screw-terminal pod and 1 m (3') cable

OMB-DBK84 1099 14-channel thermocouple/mV module with mini

thermocouple input connectors

OMB-POD-1 199 Extra screw-terminal pod for OMB-DBK83
OMB-CA-239 41 Extra 1 m (3') cable for OMB-DBK83

Ordering Example: OMB-DBK82 14-channel thermocouple/mV card with screw-

terminal connections and OMEGACARESM1-year extended warranty for OMB-DBK82
(adds 1 year to standard 1-year warranty), $849 + 83 = $932.

Type Min Max -100 100 300

J -200 760 0.6 0.5 0.6
K -200 1200 0.7 0.6 0.7
T -200 400 0.7 0.6 0.6
E -270 650 0.6 0.5 0.5
S -50 1768 – 1.8 1.5
R -50 1768 – 1.6 1.5
B 50 1780 – – 3.7

N28 -270 400 0.9 0.7 0.7
N14 0 1300 – 0.7 0.7

Type 500 700 900 1100 1400

J 0.7 0.7 – – –
K 0.8 0.8 0.9 1.0 –
T–––––
E 0.6 – – – –
S 1.5 1.4 1.5 1.6 1.6
R 1.4 1.4 1.3 1.4 1.5
N 2.4 2.1 1.8 1.7 1.5

N28 – – – – –
N14 0.8 0.8 0.9 1.0 –

Thermocouple Accuracy at Measurement
Temperature in °C (±°C)

OMB-DBK82, $849,

OMB-DBK83, $999

OMB-DBK84, $1099,

AVAILABLE FOR FAST DELIVERY!