National Instruments CB-27T Installation Manual

INSTALLATION GUIDE
CB-27T, TBX-68T,
T B
ERMINAL
Introduction
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LOCKS
This installation guide describes how to install and connect signals to
the CB-27T, TBX-68T, and CB-68T isothermal terminal blocks for use
with the NI 435x, which includes the NI 4350 (ISA) for the ISA bus, the
NI 4350 (PCMCIA) for computers with Type II PCMCIA slots, NI 4350
(USB) for computers that are USB compatible, NI 4351 (PXI) for PXI and
CompactPCI chassis, and NI 4351 (PCI) for PCI bus computers.
The CB-27T isothermal terminal block is a shielded board with screw
terminals that connects to the NI 4350 (PCMCIA) input/output (I/O)
connector.
The TBX-68T isothermal terminal block is a DIN rail-mountable terminal
block that consists of a shielded board with screw terminals and digital
signal conditioning accessory connections. It connects to the NI 435x (ISA,
USB, PXI, PCI) I/O connector.
The CB-68T isothermal terminal block is a CA-1000 enclosure-mountable
terminal block that consists of a shielded board with screw terminals and
digital signal conditioning accessory connections. It connects to the
NI 435x (ISA, USB, PXI, PCI) I/O connector.
The terminals blocks can easily accommodate thermocouples, resistance
temperature detectors (RTDs), thermistors, and voltage signals. The
terminal blocks feature isothermal construction to minimize the
temperature gradients across the screw terminals and a high-accuracy
thermistor cold-junction temperature sensor for measuring with
thermocouples. Enclosures keep out air currents to maintain an isothermal
environment for the screw terminals and the cold-junction sensor. The
TBX-68T mounts on most European standard DIN EN mounting rails. The
TBX-68T and CB-68T also have connectors for cables from selected relay
and digital signal conditioning modules.
CB-68T I
SOTHERMAL
January 1999