Reference Manual
00809-0100-4731, Rev FA
April 2003
A-5
APEX
™
and APEX Sentry
™
Radar Gauge
ENVIRONMENTAL
CONDITIONS
APEX and APEX Sentry
• Humidity: 5 to 100% relative humidity (with covers on and tightened to
achieve metal-to-metal contact)
• Electronics/Housing temperature ranges:
Standard: –40 to 158 °F (–40 to 70 °C)
With Integral Display: –4 to 131 °F (–20 to 55 °C)
• Enclosure rating: NEMA 4X, CSA Type 4X, IP 66
• Because the frequency of the gauges is within a communication
bandwidth, they must comply with telecommunication requirements. To
meet most of these requirements, the APEX and APEX Sentry Radar
Gauges must be installed on enclosed or vented metal tanks. However,
other tank types may be approved in country of final destination. Refer to
“Telecom Restrictions” on page A-2 for detailed information.
Process Conditions APEX and APEX Sentry
• Suitable for liquids, slurries, or sludges
• Nozzle Temperature Range: –40 to 374 °F (–40 to 190 °C) See chart on
next page
• Process Pressure Range: full vacuum to 155 psi (10,69 bar) See chart on
next page.
ELECTRICAL
SPECIFICATIONS
APEX and APEX Sentry
• Gauge entry is ¾–14 NPT female conduit fittings
• Gauge is factory sealed; conduit seal not required to meet FM
explosion-proof requirements
• Terminal block provides connections for AC or DC power (specified at time
of order) and grounding
• Transient protection: APEX and APEX Sentry Radar Gauges comply with
IEC standard 61000 4-5
• Connections for secondary inputs and loop testing available on APEX only
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