FAQ

Q1: What does “CT” in Velomitor CT stand for?
A: “CT” commonly refers to “Cooling Tower” or “Cooling Tower / low-speed” variant.

This version is tuned for lower frequencies and slower rotating machinery

(e.g. fan speeds) that the standard Velomitor

 might not optimally detect.

Q2: What is the lowest frequency this sensor can reliably measure?
A: In its ±3 dB bandwidth, it can go down to about 1.5 Hz (≈ 90 cycles per minute).

 In the tighter ±1 dB band, it is around 3.0 Hz. 

Q3: What is the sensitivity and signal output?
A: Typical sensitivity is 3.94 mV per mm/s (±5 %). That corresponds

to about 100 mV per in/s. 

Q4: What is the maximum measurable velocity amplitude?
A: The datasheet lists a typical maximum broadband

velocity of 63.5 mm/s (≈ 2.5 in/s) pk.

 Q5: How long can the signal cable be?

A: Up to 305 m (1,000 ft) of cable (e.g. Bently part

02173006) is supported without

significant signal loss.