Isolated Linearized RTD Input
5B34
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Amplifies, Protects, Filters, and Isolates Analog Input.
Linearize a wide variety of 2 & 3 wire RTDs. (True 4-wire RTD
measurements are provided by the 5B35).
Generates an output of 0 to +5V.
Module circuitry can withstand 240v rms at the input screw-
terminals.
All 5B34 series modules are mix-and-match and Hot
Swappable.
APPLICATIONS
Figure 1. 5B34 Functional Block Diagram
Industrial signal conditioning
Industrial signal isolation
Industrial signal filtering
Signal Linearization
There are also a number of backplanes and mounting sockets
which provide a complete signal conditioning solution for end
users. Each backplane incorporates screw terminals for field
wiring inputs and outputs and cold junction sensors for
thermocouple applications.
PRODUCT OVERVIEW
These signal conditioners are designed to provide an easy and
convenient solution to signal conditioning problems of both
designers and end users in measurement and control
applications. Typical uses include microcomputer-based
measurement systems, standard data acquisition systems,
programmable controllers, analog recorders and dedicated
control systems. The 5 B series modules are ideally suited to
applications where monitoring and control of temperature,
pressure, flow, rotation and other analog signals are required.
The 5B Series represents an innovative generation of low cost,
high performance plug-in signal conditioners. Designed for
industrial applications, these modules incorporate highly
reliable transformer-based isolation and automated surface-
mount manufacturing technology. They are compact,
economical components whose performance exceeds that
available from more expensive devices. Combining 1500 V rms
continuous isolation, +0.05% calibrated accuracy, small size and
low cost, the 5B Series is an attractive alternative to expensive
signal conditioners and in-house designs
The 5B Series modules and backplanes are approved by Factory
Mutual (FM) and the 5B Series modules are approved by the
Canadian Standards Association (CSA) for use in Class 1,
Division 2, Groups A, B, C, and D locations. These approvals
certify that the 5B Series is suitable for use in locations where a
hazardous concentration of flammable gas may exist only under
fault conditions of operation. Equipment of this category is
called “non-incendive” and they need no special enclosures or
other physical safeguards. The 5B series modules and
All modules are potted and identical in pin-out and size (2.27” x
2.32” x 0.595”). They can be mixed and matched, permitting
users to address their exact needs, and may be “hot swapped
without disturbing field wiring or power. The isolated input
modules provide 0 to +5V or +5V outputs and accept J, K, T, E,
R, S, N, or B type thermocouples.
backplanes have been tested and passed the stringent heavy
industrial requirements of the EU’s electromagnetic
These modules feature complete signal conditioning functions
including 240 V rms input protection, filtering, chopper
stabilized low drift +1 uV/oC amplification, 1500 V rms
isolation, and sensor excitation when required.
compatibility (ENC) directive – EN50082-1 and EN50081-2.
When used according to installation directions (refer to 5B
series User Manual), any errors caused by EMI/RFI interference
will be less than 0.1% of the full scale 5B measurement range for
field strengths up to 10 V/M and frequencies up to 1 GHz.
All modules feature excellent common mode rejection and
meet industrial transient surge withstand specifications.
Rev. 0
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