4.2.1 Micro Motion 9-wire cable types and usage
Cable types
Micro Motion supplies three types of 9-wire cable: jacketed, shielded, and armored. Note
the following differences between the cable types:
• Armored cable provides mechanical protection for the cable wires.
• Jacketed cable has a smaller bend radius than shielded or armored cable.
• If ATEX compliance is required, the different cable types have different installation
requirements.
Cable jacket types
All cable types can be ordered with a PVC jacket or Teflon
®
FEP jacket. Teflon FEP is
required for the following installation types:
• All installations that include a T-series sensor.
• All installations with a cable length of 250 ft (75 m) or greater, a nominal flow less
than 20 percent, and ambient temperature changes greater than +68 °F (+20 °C).
Cable jacket material and temperature rangesTable 4-1:
Handling temperature Operating temperature
Cable jacket material Low limit High limit Low limit High limit
PVC –4 °F (–20 °C) +194 °F (+90 °C) –40 °F (–40 °C) +221 °F (+105 °C)
Teflon FEP –40 °F (–40 °C) +194 °F (+90 °C) –76 °F (–60 °C) +302 °F (+150 °C)
Cable bend radii
Bend radii of jacketed cableTable 4-2:
Jacket material Outside diameter Minimum bend radii
Static (no load) condition Under dynamic load
PVC 0.415 inches (10 mm) 3–1/8 inches (80 mm) 6–1/4 inches (159 mm)
Teflon FEP 0.340 inches (9 mm) 2–5/8 inches (67 mm) 5–1/8 inches (131 mm)
Bend radii of shielded cableTable 4-3:
Jacket material Outside diameter Minimum bend radii
Static (no load) condition Under dynamic load
PVC 0.2 inches (14 mm) 4–1/4 inches (108 mm) 8–1/2 inches (216 mm)
Teflon FEP 0.425 inches (11 mm) 3–1/4 inches (83 mm) 6–3/8 inches (162 mm)
Mounting and sensor wiring for 9-wire remote installations
Installation Manual 33
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