190501-02-00-05 Bently Nevada Velomitor CT (Cooling Tower)
Description
The It is a low‑frequency version of the standard “Velomitor” series, tailored for low‑speed fans (fans running as low as ~ 90 rpm, typical 100–300 rpm) — i.e. slower rotating equipment such as cooling towers, not
high‑speed turbines/rotors.The sensor mounts on the equipment casing or fan housing, and measures casing vibration velocity (rather than shaft proximity). This makes it suitable for monitoring fan
imbalance, structural vibration, bearing housing vibration, or general condition monitoring of large, slow‑turning fans or cooling tower motors. “Velomitor CT” is
a piezo‑velocity sensor (velocity transducer) designed for measuring vibration velocity of machine casings
/ housings, especially on cooling‑tower fans or air‑cooled heat‑exchanger fan assemblies.
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Frequently Asked Questions of 190501-02-00-05
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Q: What does “CT” in “Velomitor CT” mean?
“CT” stands for Cooling Tower (or more generally, “Casing / Cooling Tower fan”) — indicating this version of Velomitor is optimized for low‑frequency vibration from slow‑speed fans / cooling‑tower assemblies (as low as ~ 90 rpm).
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Q: What is this sensor used for — housing vibration or shaft vibration?
This sensor measures casing (housing) vibration velocity, not shaft / rotor position. It is typically used on machine housings, fan casings, or heat exchanger fans — making it suitable for monitoring fan imbalance, structural vibration, bearing-housing vibration, or fan‑related abnormalities.
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Q: Is it safe / certified for hazardous areas?
Yes — documentation shows that certain 190501 CT variants are available with hazardous‑area approvals: e.g. certified by Canadian Standards Association (CSA/NRTL/C) for Class I, Division 1 (Groups A, B, C, D) + other ratings; and variants may have approval for
ATEX / IECEx depending on order code.
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Inquiry now: miya@mvme.cn
Bently Nevada Hot Series:
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