Omega Products OMB-DBK90 User Manual
OMB-DBK90
Extended Warranty
Program
SM
56-Channel Thermocouple Input Module
for OMB-DAQSCAN-2000 Series
$
1749
Basic Unit
⻬ 56 Thermocouple
Channels in One
Compact and
Rugged Enclosure
⻬ Supports Any
Thermocouple Type
on Any Channel
⻬ Very Low Cost
per Channel and Very
High-Channel Density
⻬ Attach Up to 16 Units
Together for Up to 896
Channels per A/D
Mainframe
The OMB-DBK90 module provides
56 channels of high-accuracy
thermocouple (TC) inputs. The
OMB-DBK90 is ideally suited for
high-channel-count TC
applications, with a maximum TC
capacity of 896 channels per
system. For larger channel-count
applications, multiple mainframes
can be combined for a maximum
channel capacity of 3584 channels.
Thermocouples attach to the
OMB-DBK90 via mini-TC input
connectors, and any TC type
can be installed into any channel.
Each row of 14 TC inputs has
a separate cold-junction sensor
to ensure accurate readings.
OMB-DBK90, $1749, shown
smaller than actual size.
Ready made insulated thermocouples with miniature male
connector and heavy duty flex strain relief.
OMB-DBK90 modules are housed
in a rugged all-metal package
that can be connected to an
OMB-DAQSCAN-2000 and
rack-mounted with an optional
rack-mount kit.
When multiple OMB-DBK90’s
are mounted together, a male
and female P1 connector on either
side of the unit provides all system
connections so that only a single
cable back to the A/D mainframe
is required.
For distributed applications,
such as throughout the cabin of a
vehicle, OMB-DBK90 modules can
be mounted as separate units.
Up to 20' of cable can be used to
connect OMB-DBK90 modules.
5SRTC-TT-K-24-26, $54, 5 pack basic unit.
Visit omega.com for more details.
Each OMB-DBK90 has a built-in
auto-zero channel and a CJC
channel. The OMB-DBK90 can
measure one TC channel in 3 ms,
14 TC channels in 16 ms, and all 56
TC channels in 61 ms.
An OMB-DBK90 based system of
896 channels can be measured in
976 ms. This speed is slower than
other OMB-DBK modules to ensure
that the TC measurements are
accurate, low noise, and stable.
Typical measurement accuracies
are better than 0.7°C, with channelto-channel variation typically less
than 0.5°C.
If OMB-DBK90 measurements are
mixed with measurements from
other OMB-DBK options, the other
measurements can be made at their
standard 5 or 10 µs/channel rate.
H-1
Specifications
Extended Warranty
Program
SM
System Compatibility:
Attaches to an
OMB-DAQSCAN-2000
System Connector: Male and
female DB37 for unit-to-unit mating
and mating with P1 on the
acquisition mainframe
TC Connector: Mini-TC connectors
ACOM Connector Type:
Pomona model 5936-0
Inputs: 56 differential TC inputs,
open TC detection per channel
TC Types: J, K, T, E, S, R, B,
N28, N14
Speed: 1 channel in 3 ms,
14 channels in 16 ms,
56 channels in 61 ms
Dimensions:
285 W x 88 D x 52 mm H
(11 x 3.44 x 2.05")
Weight: 0.96 kg (2.12 lb)
Power Requirements:
40 mA max from ±15 V;
40 mA max from 5 V;
1400 mW total
Input Impedance: 4 MΩ
(differential) in parallel
with 400 pF
Input Bandwidth: 1 kHz
Minimum Resolution:
0.1°C for all TC types
TC Accuracy: Valid for one
year at 25°C ambient (see table)
Operating Temperature:
-30 to 70°C (-22 to 158°F)
Relative Humidity: 0 to 95%
non-condensing
Temperature Coefficient of
Accuracy for Type T TC: ±0.05°C
for every °C away from 25°C
Channel-to-Channel
Crosstalk:
-90 dB typ (0 to 100 Hz)
DC CMRR: -80 dB typ
OMB-DBK90, $1749,
and OMB-RM-DBK90, $29,
rack mount kit, shown smaller
than actual size
AC CMRR: -80 dB typ (0
to 60 Hz)
Maximum Common
Mode Voltage: ±10 V
Overvoltage
Protection: ±40 V
OMEGACARESMextended warranty program is
available for models shown on this page. Ask
your sales representative for full details when
placing an order. OMEGACARE
labor and equivalent loaners.
SM
covers parts,
OMB-DAQSCAN-2005,
$2049, front and back, shown
smaller than actual size.
TC Accuracy at Measurement Temperature in °C (±°C)
Type Min Max -100 0 100 300 500 700 900 1100 1400
J -200 760 0.8 0.7 0.7 0.8 0.9 0.9 -- -
K -200 1200 0.9 0.8 0.8 0.9 1.1 1.1 1.2 1.3 T -200 400 0.9 0.8 0.8 0.8 ----E -270 650 0.8 0.7 0.7 0.7 0.8 ---S -50 1768 - 3.1 2.4 2.0 2.0 1.9 2.0 2.1 2.1
R -50 1768 - 3.1 2.1 2.0 1.9 1.9 1.7 1.9 2.0
B 50 1780 -- - 4.9 3.2 2.8 2.4 2.3 2.0
N28 -270 400 1.2 0.9 0.9 0.9 ----N14 0 1300 - 0.9 0.9 0.9 1.1 1.1 1.2 1.5 -
Accuracy conditions: exclusive of thermocouple errors, exclusive of noise,
VCM = 0 25°C ambient temperature, stabilized for 1 hour.
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Description
OMB-DBK90 $1749 56-channel thermocouple input module
OMB-CA-37-1 51 37-pin cable, 0.18 m (7") long, connects OMB-DBK90 to OMB-DAQSCAN
OMB-DAQSCAN-2005 2049 Ethernet system with 16 single-ended/8 differential 250 KHz 16 bit analog inputs,
OMB-RM-DBK90 29 Rack mount kit for OMB-DBK90
Each OMB-DBK90 module is supplied with complete operator’s manual on CD ROM.
Ordering Example: OMB-DBK90
(adds 1 year to standard 1-year warranty) and
40 digital I/O, 4 analog outputs, 4 frequency/pulse Counters and 2
frequency/pulse generators
56-channel thermocouple input module and OMEGACARE SM1 year extended warranty for
OMB-CA-37-1
cable, $1749 + 150 + 51 =
$1950.
H-2
OMB-DBK90
H
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