Entube DE-HB
Specification Sheet for Verivolt Ultra-Compact,
High-Bandwidth, Differential Voltage Sensor
OVERVIEW
The Entube-DE-HB series was designed to enable measurement of fast high voltage signals in in-
dustrial and research environments. The output of the Entube-DE-HB is a linearly scaled down
version of the voltage difference between its two input terminals. This output can then be pro-
cessed by a computer based measurement system. The Entube-DE-HB series covers multiple input
dynamic ranges (±100V, ±200V, ±300V, ±400V, ±500V, ±750V, ±1000V and ±1500V) with a 20MHz
bandwidth, and 0.2% accuracy.
In addition to multiple dynamic ranges, the Entube-DE-HB can be ordered to have a single-ended
or a differential-pair output. The single-ended version has a BNC connector at the output, and can
be ordered as ±10V, ±5V or ±1V.
SPECIFICATIONS
Entube DE-HB
Bandwidth (-3dB point)
Integrated sensor noise
(Referenced to output)
Gain
(Using 10V standard
output voltage)
Input Inpedance
< 380 μV
< 290 μV
< 350 μV
< 350 μV
100V
200V
300V
400V
500V
20MHZ
< 350 μV
< 370 μV
< 650 μV
< 700 μV
750V
1000V
1500V
HARDWARE
DESCRIPTION
The high voltage input signal connects to the sensor via two
clamp cage connectors. Use appropriate wire jacket and gauge,
as well as creepage distance. For superior noise immunity, it is
recommended to use a twisted pair from the high voltage source
to the input of the sensor.
10
20
30
40
50
75
100
150
2 MΩ || 1pF
5M || 1pF
10MΩ||1pF
20MΩ||1pF
40MΩ||1pF
Eletrical
Accuracy (percentage of
reading)
Max total phase shift at 60Hz
Max Input delay
Withstanding common mode
surge voltage
Withstanding differential mode
surge voltage
±0.2%
< 0.001°
< 20 ns
4x Input Range for 0.1s
5x Input Range for 0.1s
Performance
Input-Output non-linearity
Output voltage
Gain temperature drift
Common mode rejection
at 60Hz
Power Supply Voltage
Output type
Output Offset Voltage
Output impedance
DIN Rail
Spring cage
Spring cage / BNC
3.6” x 2.4” x 1.4”
198 g (7.0 oz)
< 80 ppm
See notes
±40 ppm/°C
82 dB
8V to 28V
Single-ended or differential pair
< ±0.5mV
(on ±10V signal)
50Ω (-S) , 100Ω (-D)
Connections for Entube DE-HB
A spring cage connector is used to input pow-
er to the sensor. A single post screw terminal is
used to ground the secondary side of the sensor.
The signal out of the sensor comes in a BNC connector (single-
ended version), or a spring cage connector (differential-pair ver-
sion). If signal reflections are a concern, place the sensor as close
as possible to the high voltage signal source, and use the appro-
priate cable and load termination. If using a digitizer with BNC
inputs, use a 50Ω coaxial cable and a 50Ω terminating load at the
digitizer end. If using a digitizer with differential inputs, use a 100
Ω twisted pair and a 100 Ω terminating load at the digitizer end.
Mechanical
Mounting Type
Connectivity In
Connedtivity Out
Outer Dimensions
Weight
Environmental
Operating temperature
Storage temperature
– 0 to 70 °C
– 65 to 90 °C
The schematic on the figure above shows how to connect the
Entube-DE-HB between the high voltage signal source and the
digitizer.
650 Washington St, San Francisco, CA 94111
Phone: 70VERIVOLT / (708) 374-8658
1
MERCHANICAL
DIMENSIONS
HARDWARE
CONFIGURATION
A.
Ground sensor by connecting a
wire from the ground to the standoff
located next to the two spring connec-
tors. Connect any 8V to 28V external
power source to power the unit.
B.
Insert a wire pair between each of
these connectors and a corresponding
current input on the DAQ. The polar-
ity of the signal out is aligned with the
input signals.
C.
On the primary side, connect the
plus and minus signals. Use standard
twisted pair.
A
B
C
Standards and Certifications
● CE
THIS SENSOR IS NOT A SAFETY DEVICE AND IS NOT INTENDED TO BE USED AS A SAFETY DEVICE. This sensor is designed only to detect and read certain data in an elec-
tronic manner and perform no use apart from that, specifically no safetyrelated use. This sensor product does not include self-checking redundant circuitry, and the
failure of this sensor product could cause either an energized or de-energized output condition, which could result in death, serious bodily injury, or property damage.
DANGER
2
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