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190501 Velomitor® CT Velocity Transducer

Velocity Transducer

This is a low-frequency version of our Velomitor® transducer, specifically designed for cooling tower monitoring applications with rotational speeds as low as 90 rpm.

 

 

 

 

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Specifications

Parameters are specified from +20 °C to +30 °C (+68 °F to +86 °F) and 100 Hz unless otherwise indicated.

Note: Operation outside the specified limits will result in false readings or loss of machine monitoring.

Electrical

Sensitivity 3.94 mV/mm/s (100 mV/in/s) ±5%.
Frequency Response 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB
1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB
Temperature Sensitivity -8% to +5% typical over the operating temperature range.
Velocity Range 63.5 mm/s pk (2.5 in/s pk) (see Figure 4 and Figure 5). Vibration components in excess of 10g pk above 1 kHz can significantly reduce this range.
Transverse Response Less than 5% of the axial sensitivity.
Amplitude Linearity ±2% to 63.5 mm/s pk (2.5 in/s pk)
Mounted Resonant Frequency 9 kHz, minimum (stud mounted, except quick disconnect)
Output Bias Voltage 10.1 Vdc ± 1.0 Vdc , Pin A referenced to Pin B
Dynamic Output Impedance <400 Ω typical
Broadband Noise Floor (1.5 Hz to 1 kHz) 0.229 mm/s (0.009 in/s) pk. See Figure 6 for typical noise floor.
Base Strain Sensitivity 0.43 mm/s/μstrain (0.017 in/s/μstrain).
Grounding Internal electronics are isolated from case.
Maximum Cable Length 305 metres (1,000 feet) of cable (part number 02173006) with no degradation of signal.
Note: Maximum continuous length of cable available is 300 feet. If longer lengths are required they must be spliced or have a connector installed on them.

Hazardous Area Approvals

Multiple approvals for hazardous areas certified by Canadian Standards Association (CSA/NRTL/C) in North America and by LCIE in Europe.

North America Ex ia/AEx ia IIC T4
Class I, Div 1 Groups A, B, C & D
Class II, Groups E, F, and G
Class III When installed per dwg 167536
T4 @ -40°C ≤ Ta ≤ 100°C
Ex nL/AEx nA IIC T4
Class I, Div 2 Groups A, B, C & D
When installed per dwg 167536
T4 @ -40°C ≤ Ta ≤ 100°C
European/CENELEC Ex II 1 G
EEx ia IIC T4
T4 @ -40°C ≤ Ta ≤ 100°C
Ex II 3 G
EEx nL IIC T4
T4 @ -40°C ≤ Ta ≤ 100°C
IECEx Ex ia IIC T4
Ex nL IIC T4
T4 @ -40°C ≤ Ta ≤ 100°C
Brazil BR-Ex ia IIC T4
T4 @ -40°C ≤ Ta ≤ 100°C

Compliance and Certifications

EMC

European Community Directives EMC 2004/108/EC Standards:
EN 61000-6-2, Immunity for Industrial Environments
EN 61000-4-2, Electro-static Discharge
EN 61000-4-3, Radiated Immunity
EN 61000-4-4, Electrical Fast Transient
EN 61000-4-5, Surge
EN 61000-4-6, Conducted Immunity
EN 61000-4-8, Magnetic Field Immunity

Environmental Limits

Operating Temperature -40 °C to +85 °C (-40 °F to +185 °F).
Storage Temperature -40 °C to +100 °C (-40 °F to +212 °F).
Shock Limit 5000 g pk, maximum.
Humidity Limit 100% condensing, non-submerged.
Magnetic Field Susceptibility <0.0068 mm/s/gauss (0.268 mil/s/gauss) @ 50 gauss, 50-60Hz

Mechanical

Weight <297 g (10.5 oz.), typical.
Mounting Surface 33 mm diameter (1.3 in diameter).
Height 82 mm (3.2 in).
Case Material 304L stainless steel
Connector 2-pin 304L stainless steel MIL-C-5015, top.
Mounting Torque 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).
Polarity Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer.
Mounting Angle Any orientation.

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Descriptions English
190501 Velomitor CT Velocity Transducer Datasheet acrobat-reader
Housings for Proximitor Sensors and Interface Modules acrobat-reader


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