4-20mA Sensor Tables
Part No. | Variant Description | Quantity | Quantity Description | Value @ 4mA | Value @ 20mA | Units | Suggested AoC | ||
---|---|---|---|---|---|---|---|---|---|
VTI21-VT1 | AC Vane Relay Variant | Torque | Instantaneous Torque Exerted on the relay vane. | 0 | +25 | m.Nm | 0.2 m.Nm | ||
VTI21-HVI | HVI Receiver Variant | Average Current | Average HVI Pulsed Current seen by the VTI21 from input channel 1. | 0 | 600 | mA | 15 mA | ||
VTI21-TI21-TX | TI21 / EbiTrack 200 Variant (TX) | Average Current | Average of upper and lower sideband current from VTI21 input channel 1. | 0 | 1500 | mA | 5 5 | A | 0.05 A |
VTI21-TI21-TX | TI21 / EbiTrack 200 Variant (RX) | Average Current | Average of upper and lower sideband current from VTI21 input channel 1. | 0 | 200 | mA | 2 mA | ||
VTI21-FS25 | FS2500 Receiver Variant | Center Current | Amplitude of the FS2500 center frequency current from VTI21 input channel 1. | 0 | 1500 | mA | 5 mA | ||
VTI21-FS26 | FS2600 Receiver Variant | Center Current | Amplitude of the FS2500 center frequency current from VTI21 input channel 1. | 0 | 1500 | mA | 5 mA | ||
VTI21-ACS | General Purpose AC sensing up to 20A 25A RMS | Current | RMS current from VTI21 input channel 1. | 0 | 2025 | A | 0.2 A | ||
VTI21-UM71 | UM71 Variant | Current | Current at selected center frequency from VTi21 input channel 1. | 0 | 5000 | µA | 100µA | ||
VTI21-ASTER | Aster Variant | Current | Current at selected center frequency from VTi21 input channel 1. | 0 | 5000 | µA | 100µA | ||
VTI21-REED | Reed Relay Variant | Current | Current measured across the Reed relay frequency range on input channel 1. | 0 | 5000 | mA | 100mA25mA | ||
VTI21-RFDM | Reed Relay FDM variant | n/a | none |
...
VTI21-TI21 / VTI21-FS25 / VTI21-FS26
Slave Channel | VTI21 Input Channel | Quantity | Description | Typical Range | Units | Suggested AoC |
---|---|---|---|---|---|---|
1 | 1 | Center Frequency | The Center frequency, in hertz, of the track circuit. | 388.8 to 508.8 | Hz | 1 Hz |
2 |
Center frequency Current | Total RMS current at the target center frequency | 0 to 1000 | mA | 5 mA | |
3 |
Lower Side Band current | Total RMS current at the target lower side band frequency | 0 to 1000 | mA | 5 mA | |
4 |
Upper Side Band current | Total RMS current at the target upper side band frequency | 0 to 1000 | mA | 5 mA |
5 |
In Band Current | Total RMS current seen by the transducer between 300 to 600 Hz | 0 to 1000 | mA | 5 mA | |
6 |
Spectrogram or Gain | Capture waveform showing the magnitude spectrum of the input signal. Use a "Triggered Capture" to acquire the Spectrogram. When spectrum data is not being acquired, this channel shows the current amplifier gain setting | 4.8 to 1228.8 | Hz | NA |
7 |
Loudest Frequency | The strongest frequency, in hertz, observed in the incoming waveform. | 4.8 to 1228.8 | Hz | 1 Hz |
8 |
Total Current | Total RMS current seen by the transducer. | 0 to 1000 | mA | 5 mA | ||
9 | 2 | Center Frequency | The Center frequency, in hertz, of the track circuit. | 388.8 to 508.8 | Hz | 1 Hz |
10 |
Center frequency Current | Total RMS current at the target center frequency | 0 to 1000 | mA | 5 mA | |
11 |
Lower Side Band current | Total RMS current at the target lower side band frequency | 0 to 1000 | mA | 5 mA | |
12 |
Upper Side Band current | Total RMS current at the target upper side band frequency | 0 to 1000 | mA | 5 mA | |
13 |
In Band Current | Total RMS current seen by the transducer between 300 to 600 Hz | 0 to 1000 | mA | 5 mA | |
14 |
Spectrogram or Gain | Capture waveform showing the magnitude spectrum of the input signal. Use a "Triggered Capture" to acquire the Spectrogram. When spectrum data is not being acquired, this channel shows the current amplifier gain setting | 4.8 to 1228.8 | Hz | NA | |
15 |
Loudest Frequency | The strongest frequency, in hertz, observed in the incoming waveform. | 4.8 to 1228.8 | Hz | 1 Hz | |
16 |
Total Current | Total RMS current seen by the transducer. | 0 to 1000 | mA | 5 mA |
VTI21-HVI
Slave Channel | VTI21 Input Channel | Quantity | Description | Typical Range | Units | Suggested AoC |
---|---|---|---|---|---|---|
1 - ANA | 1 | HVI |
Frequency |
The frequency of pulses | 0 to |
5 |
Hz | 0.1 Hz |
2 - ANA |
HVI |
Current |
RMS Current of the pulsed waveform | 0 to |
1500 |
mA | 5 mA |
3 - ANA |
Noise Current | The RMS current observed between pulses. | 0 to 1500 | mA |
5 mA |
4 - |
DIG | Pulse Conflict | Set TRUE if pulses are observed to be bleeding through from adjacent track sections | Digital |
N/A | On Change |
5 - ANA |
Rejection Rate | Proportion of pulses deemed not to be genuine HVI pulses | 0 to 100 | % | Don't push to server - for diagnostic use by Mpec only |
6 - ANA |
Rejection Reason | Bitfield encoding the reason a pulse was not accepted. | 8 bits | N/A |
7- ANA |
Sensitivity | Threshold used to identify pulse events | 0 to 2621440 | N/A |
8 - ANA |
Pulse Waveform | If this channel is requested as a capture, the VTi21 will return a high-resolution waveform of the last observed pulse | 0 to 1500 | mA | Triggered Capture |
9 - |
ANA | 2 |
VTI21-ACS-001
Slave Channel
VTI21 Input Channel
Quantity
Description
Typical Range
Units
Suggested AoC
HVI Frequency | The frequency of pulses | 0 to 5 | Hz | 0.1 Hz | |
10 - ANA | HVI Current | RMS Current of the pulsed waveform | 0 to 1500 | mA | 5 mA |
11 - ANA | Noise Current | The RMS current observed between pulses. | 0 to 1500 | mA | 5 mA |
...
12 - DIG | Pulse Conflict | Set TRUE if pulses are observed to be bleeding through from adjacent track sections | Digital | N/A | On Change |
13 - ANA | Rejection Rate | Proportion of pulses deemed not to be genuine HVI pulses | 0 to 100 | % | Don't push to server - for diagnostic use by Mpec only |
14 - ANA | Rejection Reason | Bitfield encoding the reason a pulse was not accepted. | 8 bits | N/A | |
15 - ANA | Sensitivity | Threshold used to identify pulse events | 0 to 2621440 | N/A | |
16 - ANA | Pulse Waveform | If this channel is requested as a capture, the VTi21 will return a high-resolution waveform of the last observed pulse | 0 to 1500 | mA | Triggered Capture |
VTI21-ACS
Slave Channel | VTI21 Input Channel | Quantity | Description | Typical Range | Units | Suggested AoC | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 1 | CH 1 Current | RMS current observed on Channel 1 (output at 100 Hz, low pass filtered with cutoff of 9 Hz) | 0 to 2025 | A | 0.2 A2 | ||||||||||||
2 | CH | 21 Average Current | RMS current observed on Channel 2 | 0 to 20 | A | 0.2 A | 3 | NA | Derived Current | RMS current derived for an unmonitored 3rd phase in a balanced three-phase systemAverage RMS current observed on Channel 1, over one second period. | 0 to | 2025 | A | 0.2 A | ||||
43 | NA | CH1 Leads CH2 | Digital Output - TRUE if the waveform on CH1 is observed to lead that of CH2 | TRUE or FALSE | NA | NA | 5 | NA | CH1 Lags CH2 | Digital Output - TRUE if the waveform on CH1 is observed to lag that of CH2 | TRUE or FALSE | NA | NA2 | CH 2 Current | RMS current observed on Channel 2 (output at 100 Hz, low pass filtered with cutoff of 9 Hz) | 0 to 25 | A | 0.2 A |
4 | CH 2 Average Current | Average RMS current observed on Channel 2, over one second period. | 0 to 25 | A | 0.2 A |
VTI21-UM71
Slave Channel | VTI21 Input Channel | Quantity | Description | Typical Range | Units | Suggested AoC |
---|---|---|---|---|---|---|
1 | 1 | CH 1 Frequency | Channel 1 Frequency Selected | 1700 to 2600 | Hz | 1 |
21 | CH 1 Side Band Ratio | Ratio of lower to upper frequency (0%=all lower, 100%=all upper) | 0 to 100% | % | 5 | |
31 | CH 1 Raw Frequency | Simple Frequency Measurement (zero crossings) | 1600 to 2700 | Hz | 100 | |
41 | CH 1 Total Current | Total current in the UM71 band | 0 to 5mA | µA | 100 | |
51 | CH 1 current 1700Hz | Current measured at 1700Hz | 0 to 5mA | µA | 100 | |
61 | CH 1 current 2000Hz | Current measured at 2000Hz | 0 to 5mA | µA | 100 | |
71 | CH 1 current 2300Hz | Current measured at 2300Hz | 0 to 5mA | µA | 100 | |
81 | CH 1 current 2600Hz | Current measured at 2600Hz | 0 to 5mA | µA | 100 | |
91 | CH 1 Spectrogram or Gain | Capture waveform showing the magnitude spectrum of the input signal. Use a "Triggered Capture" to acquire the Spectrogram. | 1 to 32 | 1 | ||
10 | 2 | CH 2 Frequency | Channel 1 Frequency Selected | 1700 to 2600 | Hz | 1 |
112 | CH 2 Side Band Ratio | Ratio of lower to upper frequency (0%=all lower, 100%=all upper) | 0 to 100% | % | 5 | |
122 | CH 2 Raw Frequency | Simple Frequency Measurement (zero crossings) | 1600 to 2700 | Hz | 100 | |
132 | CH 2 Total Current | Total current in the UM71 band | 0 to 5mA | µA | 100 | |
142 | CH 2 current 1700Hz | Current measured at 1700Hz | 0 to 5mA | µA | 100 | |
152 | CH 2 current 2000Hz | Current measured at 2000Hz | 0 to 5mA | µA | 100 | |
162 | CH 2 current 2300Hz | Current measured at 2300Hz | 0 to 5mA | µA | 100 | |
172 | CH 2 current 2600Hz | Current measured at 2600Hz | 0 to 5mA | µA | 100 | |
18 | 2 | CH 2 Spectrogram or Gain | Capture waveform showing the magnitude spectrum of the input signal. Use a "Triggered Capture" to acquire the Spectrogram. | 1 to 32 | 1 |
...
Slave Channel | VTI21 Input Channel | Quantity | Description | Typical Range | Units | Suggested AoC |
---|---|---|---|---|---|---|
1 | 1 | CH 1 Frequency | Simple Frequency Measurement (zero crossings) | 0 to 5000 | Hz | 1 |
21 | CH 1 Total Current | Total current measured in the reed relay frequency range | 0 to 5A0 to 5000 | mA | 5010 | |
31 | CH 1 - channel 211 | Total Current at 363Hz | 0 to 5A0 to 5000 | mA | 5010 | |
41 | CH 1 - channel 212 | Total Current at 366Hz | 0 to 5A0 to 5000 | mA | 5010 | |
51 | CH 1 - channel 213 | Total Current at 369Hz 0 to 5A | 0 to 5000 | mA | 5010 | |
61 | CH 1 - channel 214 | Total Current at 372Hz | 0 to 5A0 to 5000 | mA | 5010 | |
71 | CH 1 - channel 215 | Total Current at 375Hz | 0 to 5A0 to 5000 | mA | 5010 | |
81 | CH 1 - channel 216 | Total Current at 378Hz | 0 to 5A0 to 5000 | mA | 5010 | |
91 | CH 1 - channel 217 | Total Current at 381Hz | 0 to 5A0 to 5000 | mA | 5010 | |
101 | CH 1 - channel 218 | Total Current at 384Hz | 0 to 5A0 to 5000 | mA | 5010 | |
111 | CH 1 - spectrogram / gain | Capture waveform showing the magnitude spectrum of the input signal. Use a "Triggered Capture" to acquire the Spectrogram. note: includes only measured frequencies, which are: 363, 366, 369, 372, 375, 378, 381, 384, 408, 417, 423Hz | ||||
12 | 2 | CH 2 Frequency | Simple Frequency Measurement (zero crossings) | 0 to 5000 | Hz | 1 |
13 | 2 | CH 2 Total Current | Total current measured in the reed relay frequency range | 0 to 5A0 to 5000 | mA | 5010 |
14 | 2 | CH 2 - channel 211 | Total Current at 363Hz | 0 to 5A0 to 5000 | mA | 5010 |
152 | CH 2 - channel 212 | Total Current at 366Hz | 0 to 5A0 to 5000 | mA | 5010 | |
162 | CH 2 - channel 213 | Total Current at 369Hz | 0 to 5A0 to 5000 | mA | 5010 | |
172 | CH 2 - channel 214 | Total Current at 372Hz | 0 to 5A0 to 5000 | mA | 5010 | |
182 | CH 2 - channel 215 | Total Current at 375Hz | 0 to 5A0 to 5000 | mA | 5010 | |
19 | 2 | CH 2 - channel 216 | Total Current at 378Hz | 0 to 5A0 to 5000 | mA | 5010 |
202 | CH 2 - channel 217 | Total Current at 381Hz | 0 to 5A0 to 5000 | mA | 5010 | |
21 | 2 | CH 2 - channel 218 | Total Current at 384Hz | 0 to 5A0 to 5000 | mA | 5010 |
22 | 2 | CH 2 - spectrogram / gain | Capture waveform showing the magnitude spectrum of the input signal. Use a "Triggered Capture" to acquire the Spectrogram. note: includes only measured frequencies, which are: 363, 366, 369, 372, 375, 378, 381, 384, 408, 417, 423Hz |
...
Slave Channel | VTI21 Input Channel | Quantity | Description | Typical Range | Units | Suggested AoC Threshold |
1 | 1 | Lock-on Frequency | Ideal operating frequency track circuit | 1700 to 2600 | Hz | 1 |
21 | In-band Current | RMS current in the operating band | 0-5000 | uA | 50 | |
3 | 1 | Principle Frequency | Loudest frequency observed (actual operating frequency) | 1700 to 2600 | Hz | 1 |
41 | Total Current | broad-and RMS current | 0-5000 | uA | 50 | |
51 | 1700 Hz Band Current | RMS current in the 1700 Hz band | 0-5000 | uA | 50 | |
61 | 2000 Hz Band Current | RMS current in the 1900 Hz band | 0-5000 | uA | 50 | |
71 | 2300 Hz Band Current | RMS current in the 2100 Hz band | 0-5000 | uA | 50 | |
81 | 2600 Hz Band Current | RMS current in the 2300 Hz band | 0-5000 | uA | 50 | |
91 | Gain / FFT | Pre-amp Gain as AoC, Spectrogram is acquired as a triggered capture | 10 | Hz | NA | |
10 | 2 | Lock-on Frequency | Ideal operating frequency track circuit | 1700 to 2600 | Hz | 1 |
112 | In-band Current | RMS current in the operating band | 0-5000 | uA | 50 | |
122 | Principle Frequency | Loudest frequency observed (actual operating frequency) | 1700 to 2600 | Hz | 1 | |
132 | Total Current | broad-and RMS current | 0-5000 | uA | 50 | |
142 | 1700 Hz Band Current | RMS current in the 1700 Hz band | 0-5000 | uA | 50 | |
152 | 2000 Hz Band Current | RMS current in the 1900 Hz band | 0-5000 | uA | 50 | |
162 | 2300 Hz Band Current | RMS current in the 2100 Hz band | 0-5000 | uA | 50 | |
172 | 2600 Hz Band Current | RMS current in the 2300 Hz band | 0-5000 | uA | 50 | |
1182 | Gain / FFT | Pre-amp Gain as AoC, Spectrogram is acquired as a triggered capture | 10 | Hz | NA |
...
note: only one input channel is supported.
Slave Channel | VTI21 Input Channel | Quantity | Description | Typical Range | Units | Suggested AoC |
---|---|---|---|---|---|---|
1 | 1 | Frequency | Simple Frequency Measurement (zero crossings) | 0-1000 | Hz | 50 |
2 |
Total Current | Total current measured in the reed relay frequency range | 0-5A | mA | 100 | |
3 |
FFT | FFT for each monitored Channel | Hz | NA | ||
4 |
channel 4 | Energy at 803.25Hz | 0-5A | mA | 100 |
5 |
channel 16 | Energy at 702.5Hz | 0-5A | mA | 100 | |
6 |
channel 17 | Energy at 697.5Hz | 0-5A | mA | 100 | |
7 |
channel 19 | Energy at 687Hz | 0-5A | mA | 100 | |
8 |
channel 20 | Energy at 682.5Hz | 0-5A | mA | 100 | |
9 |
channel 26 | Energy at 611.75Hz | 0-5A | mA | 100 | |
10 |
channel 27 | Energy at 607.75Hz | 0-5A | mA | 100 | |
11 |
channel 36 | Energy at 505Hz | 0-5A | mA | 100 | |
12 |
channel 38 | Energy at 493.5Hz | 0-5A | mA | 100 |
13 |
channel 39 | Energy at 488Hz | 0-5A | mA | 100 | |
14 |
channel 47 | Energy at 419.75Hz | 0-5A | mA | 100 | |
15 |
channel 48 | Energy at 410.25Hz | 0-5A | mA | 100 | |
16 |
channel 83 | Energy at 446Hz | 0-5A | mA | 100 |
17 |
channel 84 | Energy at 533.75Hz | 0-5A | mA | 100 | |
18 |
channel 92 | Energy at 842Hz | 0-5A | mA | 100 |