ENVIRONMENTAL:
•
•
OPERATING: -40°C TO 85°C
STORAGE: -40°C TO 150°C
ENCLOSURES:
•
Unit is intended for mounting in a conduit box and comes with 2 ½” on center mounting holes. An
optional explosion proof or NEMA-4x enclosure is available upon request.
APPROVALS:
•
•
•
EN50081-1:1992 Generic Emission Standard
EN50082-2:1995 Generic Immunity Requirements
CE compliant to EMC Directive 89/336/EECfor uses in residential, commercial, light or heavy
industrial environments.
INSTALLATION AND WIRING DETAILS:
In considering the interconnections between the PA1001A and the measurement system some
attention must be given to anticipated noise sources and to the coupling of these noise sources to the
interconnecting wiring.
Noise signals may be coupled into the wiring between the pickup coil, the PA1001A, and the
electronic measuring systems. In general, utilizing a shielded, twisted pair for the interconnection
greatly reduces this coupling. The shield should be grounded on both ends of the cable.
However, even with proper interconnecting cabling, cross talk with other signal lines or power lines
may still occur and should be avoided. Physical isolation of the wiring reduces the chance of
potential problems.
The pickup coil should not be located more than 100 feet from the PA1001A preamplifier. It is
recommended that the PA1001A be installed on or near the pickup coil to assure optimum
performance.
INSTALLATION:
The Model PA1001A should be placed in a convenient location that maintains access to the unit
should repairs or readjustment is required.
Connections to the terminal block should be carefully dressed to avoid having bare wires extend pass
the screw clamp on the terminal block. This is particularly important when the PC card is mounted
within an explosion proof enclosure. Wires should be neatly dressed near bottom of enclosure to
prevent problems when cover is installed.
For compliance with EMI/RFI requirements the pre-amplifier must be installed in a metal enclosure
such as a suitable NEMA 4 (e.g. GUAC) junction box. The enclosure must be properly grounded.
Also a grounding strap is required from the enclosure to the power supply common (pin 7).
The cable entry requires 360° grounding coverage to the enclosure case. This is obtained by using
twisted pair with full braid cable and a cable fitting that provides a metal to metal cable clamping
connection. The insulation of the cables should be stripped back to allow for connection to the
terminal block and allow for the cable fitting to clamp onto the braided shield. Any open areas should
then be covered using foil tape.
In hazardous locations where metal conduit is used, 360° grounding are achieved. All cable shields
should be terminated to the enclosure-grounding stud.
PA1001A – 7/02
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