Kurz Instruments Inc. December 13, 2007
360210-AH Rev.A 504/534FTB Installation AH - 7
• DC or AC power requirements and connection.
• Analog Output configuration and wiring of the 4-20 mA signals.
• Discrete Alarms
• Purge sensor air solenoid
• Zero/Mid/Span daily drift test (EPA 40 CFR part 60 or 75 support)
• Serial Digital Interface
• 5-wire sensor connection for the TS configuration
• Clip-on Ferrite for all signal wires if not in shielded conduit
• Flex service connection to sensor probe support.
Please read the complete text of the sections and study the wiring diagram examples
which are relevant to your model before performing the installation.
Safety
To ensure compliance with General Safety requirements the metal enclosures must be
grounded to minimize the chance of electrical shock. For Explosive Atmospheres,
proper grounding minimizes the chance of sparks occurring, potential ignition sources,
outside an enclosure at its mechanical interfaces if a fault current was to flow. Both
internal and external grounds are available; see the wiring diagrams DCN 342038 and
342039.
For hazardous gas areas, wiring going into and out of the explosion-proof enclosures
must be done through a conduit seal or cable gland rated for explosion-proof
applications (Class 1 Div. 1 or Zone 1) attached directly to the enclosure. See Figure
AH-4. These seals are not needed for non-incendiary designs (Class 1 Div. 2 or Zone
2).
For hazardous areas it is important to not connect or disconnect any
wiring when the circuits are energized, the resulting spark could
cause ignition.
Three 3/4" FNPT fittings are provided on the electronics enclosure. The one pointing out
radially is used for the sensor probe support or its wiring in a TS configuration. The other
two ports exiting opposite the sensor port are for power and signal wiring. One port is
typically used for AC power and the other for the signal wires. DC powered models can
use both ports for signal/power wiring. Consult your local electrical code for installation
requirements.
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