Omni 4000 Series Installation Manual page 173

Densitometer Pulse Inputs*
Positive Going Trigger
Threshold
Negative Going Trigger
Threshold
Minimum Signal Level
Maximum Signal Level
Minimum Frequency
Maximum Frequency
*Use AC coupling–low threshold or DC coupling–high threshold settings.
AC coupling is only used in conjunction with the low signal input threshold setting. It
is available for densitometer periodic time measurements only.
Prover Detector Switch Inputs:
Conventional and Pipe
Input Type
Gating Transition
Minimum Time Pulse High
Minimum Time Pulse Low
Input Impedance
Input Voltage
Debounce
Common Mode Voltage
E Combo Module Prover
Detector Switch Inputs:
Pulse Interpolation
Input Type
Gating Transition
Input Voltage
Page 8-5
OMNI 4000/7000 Installation Guide – Rev H
Specifications
•
+1.6 V ± 0.2 V–AC coupling: low threshold
•
+4.2 V ± 0.2 V–DC coupling: high threshold
•
+1.2 V ± 0.2 V–AC coupling: low threshold
•
+3.2 V ± 0.2 V–DC coupling: high threshold
2 V peak to peak
5 V peak to peak
100 Hz (10,000μs period)
6.7 kHz (150μs period)
Specifications
Digital I/O
Voltage transition starts and stops prove run counts
1 ms
> 100 ms
4.7 kΩ
> +5 VDC ON, < +4 VDC OFF (referenced to DC return)
100 ms in hardware logic
±250 VDC to chassis ground
Specifications
•
Digital I/O (active-low)
•
Normally driven by a bounce-free open collector
transistor or a normally open switch
Voltage transition starts and stops prove run counts
> +7 VDC ON, < +6 VDC OFF (referenced to DC return)
Technical Specifications