Veris Industries H971 SERIES, EA20 SERIES Data Sheet

Current Monitoring | Direct Current Transducers:

Split-Core, 4 to 20 mA Output

H971 & EA20 SERIES

DC Applications

pulse reset

technology™

U.S. Pat. #6,160,697; 6,522,517; 7,242,157

TM

Hawkeye DC Transducers provide accurate load level monitoring of
DC loads. The H971 and EA20 use Pulse Reset Technology™ with field
proven circuitry to provide a superior solution for DC applications with
minimal risk of permanent magnetization, providing longer life and
better accuracy.

The EA20 and the H971 have 4 to 20 mA output only. The H971 also
offers bi-directional sensing capability and a user-adjustable span to
allow greater application flexibility.

H971

Retrofit

Self-gripping iris for easy
installation

Flexibility

Bracket can be installed in three
different configurations

Pulse Reset
Technology™

Patented Pulse Reset Technology
significantly increases accuracy…
sensor is not affected by stray
magnetic fields, minimize
magnetization from over-current
faults

APPLICATIONS

• Battery chargers

• Motor armature current

• Motor field current

• Automotive loads

HOA

Bi-directional model…user­adjustable span from ±20
to ±200 A (H971)

Status LED

Status LED ensures proper wiring

100, 150 and 200
Amp span

100, 150, and 200 A versions
available…application flexibility
(EA20 uni-directional model)

• Marine equipment

• Solar energy applications

• Telecom

• Electroplating

SPECIFICATIONS

System Technology Exclusive Pulse Reset Technology™

Amperage Range

Sensor Supply Voltage 12 to 24 Vdc

Supply Current 35 mA

Insulation Class H971: 600 Vdc, EA20: 1000 Vdc

Temperature Range -30 to 60 °C (-22 to 140 °F)

Humidity Range 10 to 90% RH non-condensing

Output

Terminal Block Wire Size 24 to 14 AWG (0.2 to 2.1 mm2)

Terminal Block Torque 3.5 to 4.4 in-lbs (0.4 to 0.5 N-m)

Response Time Less than 150 msec

ACCURAC Y

Accuracy at Ranges
Below 100 A

Accuracy at Ranges
Above 100 A

Withstand Current 25,000 ADC

WARRANTY

Limited Warranty 5 years

H971: ±200 ADC;
EA20: 0 to 100 ADC/0 to 150 ADC/0 to 200
ADC

1

2

H971: Bidirectional 4 to 20mA (adjust.

3

; EA20: Unidirectional 4 to 20 mA

span)

±0.5 A (combined linearity, hysteresis,
and repeatability)

±0.5% full scale (combined linearity,
hysteresis, and repeatability)

5

5

AGENCY APPROVALS

Agency Approvals

Note: Do not use the LED status indicators as evidence of applied voltage.

1. For currents over 120A, supply voltage must be at least 15V.

2. For H971, at zero monitored current: 35mA max.; at 200A monitored current:
55mA to 100mA depending on supply voltage and current polarity.

3. Unless factory set per customer specifications (H971SP only).
4 . The CE mark indicates RoHS2 compliance. Please refer to the CE Declaration
of Conformity for additional details.

5. For single conductor through product (no wraps).

CE 4: EN61010-1, CAT III, Pollution
Degree 2, basic insulation

TM

HQ0001768.G 0117

Current Monitoring | H971 & EA20 Series

H932/H952

Dimensional Drawing

Removable Mounting Bracket

1.0”

(25 mm)

1.1”

(26 mm)

0.8”

(21 mm)

3.1”**

(79 mm)

2.8”

(70 mm)

Ø 0.3”

(8 mm)

2.5”

(64 mm)

3.0”

(76 mm)

* Terminal block may extend up to 1/8” over the height
dimensions shown.

** Slide switch may extend up to 1/4” over the height
dimensions shown.

Bracket can
be mounted
on three sides
for added
installation
flexibility.

Self-gripping Iris

1.4”*

(36 mm)

EA20 LINE AR OUTPUT

Scale software as shown

20 mA

SENSOR OUTPUT

4 mA

0 A

SENSED AMPS

EA20: 100/150/200 A

H971 BIDIRECTIONAL OUTPUT

Scale software as shown

20 mA

12 mA

SENSOR OUTPUT

H971/EA20

Wiring Diagram

CONTROLLER

4 to 20 mA

Ground

Sensor Supply

DC

Load

SEIRT

SU

3

227

DN
I

9 n

S

655

I

o
ge

REV

8-4

rO

5

,d

3

-00

n
al
t

8

roP

­1

179

rosneS tnerruC DC

200A

!

12-24 VDC

Current

4-20

Gnd Power

Flow

mA

Span

CONTACTOR

4 mA

1

-200 A

0 A

SENSED AMPS

1. Field Adjustable from ±20 A to ±200 A

(not applicable to customer-specified factory scaled models)

ORDERING INFORMATION

MODEL

PULSE RESET

TECHNOLOGY

H971 • 0 to 200 A Bidirectional 4 to 20 mA Split-core

H971SP • 0 to 200 A1 Bidirectional 4 to 20 mA Split-core

EA20BB010 • 0 to 100 A Unidirectional 4 to 20 mA Split-core

EA20BB015 • 0 to 150A Unidirectional 4 to 20 mA Split-core

EA20BB020 • 0 to 200A Unidirectional 4 to 20 mA Split-core

1. Range set in factory per customer specified value from 0 to ±20 A through 0 to ±199 A.

2. UL Recognized.

AMPE RAG E

RANGE (DC)

SENSOR OUTPUT HOUSING

Hawkeye Series

EA Series

+200 A

1

STAT U S

LED

UL CE ROHS

• • • •

• • • •

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• •

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2

2

2

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HQ0001768.G 0117

TM