Metrohm NIRS XDS Process Analyzer – SingleFiber - Manual (Page 41)

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10. Tighten the SMA connector using a
calibrated wrench like that shown. This
wrench has a “detent” when it reaches
the torque setting, to ensure correct
tightness.
The setting is 8 in-lb, and the open end is
5/16” (8mm).
11. Gently tighten the rounded nut to ensure
a tight seal around the Single Fiber
entrance.
TIP:
Push about ½” (12mm) of fiber inward, to
avoid stressing the fiber.
Tighten the rounded nut hand-tight. Give
a slight tug to assure good sealing – if the
fiber moves, tighten further.