H970, H971, & EA20 SERIES
VERIS INDUSTRIES
Direct Current Sensors:
Split-Core, mA
and Voltage Output
DC Applications
DESCRIPTION
Hawkeye DC Sensors provide accurate load level monitoring of DC current loads. The
H970 combines a Hall Eect sensor with proven transducer circuitry. Slide-switch
selectable amperage ranges and eld selectable mA and VDC outputs maximize
exibility. The H971 uses Pulse Reset Technology™ with eld proven circuitry to
provide a superior solution for DC applications with minimal risk of permanent
magnetization, ensuring longer life and better accuracy.
The H970 has low and high current options with slide switch selectable amperage
ranges and a choice of 0-5V, 0-10V, or 4-20mA outputs. The EA20 and the H971 have
4-20mA output only. The H971 also oers bidirectional sensing capability and a
user-adjustable span to allow greater application exibility.
APPLICATIONS
● Battery chargers
current monitoring
● Motor armature current
● Motor eld current
● Automotive loads
● Marine equipment
● Solar energy applications
● Telec om
● Electroplating
Maximize Reliability
Minimize Installed Cost
pulse reset
technology™
U.S. Pat. #6,160,697; 6,522,517; 7,242,157
FEATURES
All Models
● Self-gripping iris for easy installation
● Bracket can be installed in three dierent congurations...added exibility
● Status LED ensures proper wiring...easy set up
● 5-year warranty
H970 Multi-Output Model
● Factory calibrated switch-selec table amp ranges (20/40/80 or 50/100/200) for
● mA and DC voltage outputs...maximum installation exibility
H971 Bidirectional Model
● Patented Pulse Reset Technology™ signicantly increases accuracy...sensor is
● User-adjustable span from ±20A to ±200A
● Range can be factory-set per customer specications (SP model)
EA20 Unidirectional Model
● Patented Pulse Reset Technology™ signicantly increases accuracy...sensor is
● 100, 150, and 200A span versions available...application exibility
TM
H971
high resolution and installation ease
not aected by stray magnetic elds...minimize worry of magnetization from
over-current faults
not aected by stray magnetic elds...minimize worry of magnetization from
over-current faults
SPECIFICATIONS
System Technology H970: Open lo op Hall eect; H971, EA20: Exclusive Pulse Reset Technology™
Amperage Range H970: LC: 0-20/40/80; HC: 0-50/100/200 (slide switch selectable); H971: ±200ADC; EA 20: 0-100AD C/0-150AD C/0-200ADC
Sensor Supply Voltage H970: 15-30VAC/DC for 0-10VDC and 4-20mA output s, 12-30VAC/DC for 0-5VDC output; H971, EA20: 12-24V DC*
Supply Current 35m A max .**
Insulation Class H970: 84 0VDC; H971: 600VDC, EA20: 1000VDC
Temperature Range H970: -15° to 60°C (5° to 140°F); H971, EA20: -30° to 60°C (-22° to 140°F)
Humidity Range 10-90% RH non-condensing
Output H970: 4-20mA, 0-5VDC, 0-10VDC (2 options allowed per sensor); H9 71: Bidirectional 4-20mA (adjustable span)***; EA20: Unidirectional 4-20mA
Terminal Block Wire Size 24-14 AWG (0.2 to 2.1 mm2)
Terminal Block Torque 3.5 to 4.4 in-lbs (0.4 to 0.5 N-m)
H970 Accuracy:
Accurac y ±3% F.S. (combined lineari ty, hys teresis, and repeatability)
Repeatability ±1%
Linearit y ±1%
H971/EA20 Accuracy:
Accurac y at Ranges Below 100A ±0.5A (combined linearity, hysteresis, and repeatability)****
Accurac y at Ranges Above 100A ±0.5% full scale (combined linearity, hysteresis, and repeatability)****
Withstand Current 25,000ADC
Response Time H970: 2 sec; H971, EA20: Less than 150 msec
Agency Approvals UL 508 open device listing; CE: EN61010-1:2001-2, CAT III, pollution degree 2, basic insulation
Do not use the LED status indicators as evidence of applied voltage. For applications requiring double or reinforced insulation, please contact the factory.
* For currents over 120A, supply voltage must be at least 15V. ** For H971, at zero load current: 35mA max.; at 200A load current: 55mA to 100mA depending on supply voltage and current polarity.
*** Unless factory set per customer specications (H971SP only). **** For single conductor through product (no wraps).
800.354.8556
Year
5
Warranty
+1 503.598.4564
www.veris.com
HQ00 01768.C 01131
800.354.8556
+1 503.598.4564
www.veris.com
DIMENSIONAL DRAWING
Removable Mounting Bracket
Bracket can
be mounted
on three sides
for added
installation
exibility.
**3.1”
(79 mm)
1.1”
(26 mm)
0.8”
(21 mm)
1.0”
(25 mm)
Self-gripping Iris
2.8”
(70 mm)
Ø 0.3”
(8 mm)
3.0”
(76 mm)
2.5”
(64 mm)
1.4”*
(36 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
H971 BIDIRECTIONAL OUTPUT
Scale software as shown
APPLICATION/WIRING DIAGRAMS
H970
CONTACTOR
CONTROLLER
Voltage
+
–
DC
Load
Sensor Supply
0-5V /0-10V/4-20mA
H970/EA20 LINEAR OUTPUT
Scale software as shown
CONTROLLER
4-20mA
Power
Gnd
H971/ EA20
200A
!
Span
179
rosneS tnerruC DC
Current
Flow
CONTACTOR
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
12-24 VDC
4-20
Gnd Power
mA
20mA
20mA/5/10VDC**
12mA
SENSOR OUTPUT
4mA
-200A* +200A*0A
SENSED AMPS
*Field Adjustable from ±20A to ±200A
(not applicable to customer-specied factory scaled models)
ORDERING INFORMATION
MODEL PULSE RESET
TECHNOLOGY
AMPERAGE RANGE
(DC)
SENSOR OUTPUT HOUSING STATUS LED UL CE RoHS
SENSOR OUTPUT
4mA/0VDC**
*Slide-Switch Selectable
** Voltage option not available on EA20
0A
SENSED AMPS
H970LC: 20/40/80A*
H970HC: 50/100/200A*
EA20: 100/150/200A
RoHS
Compliant
Hawkeye Series
H971
H971S P
H970LCA
H970LCB 4-20mA and 0-10VDC Split-core
H970HCA
H970HCB 4-20mA and 0-10VDC Split-core
n
n
0 - 200A Bidirectional 4-20mA Split-core
0 - 200A* Bidirectional 4-20mA Split-core
0 to 20/40/80A
0 to 50/100/200A
4-20mA and 0-5VDC Split-core
4-20mA and 0-5VDC Split-core
n n n n
n n n n
n
n
n
n
EA Series
EA20 BB010
EA 20BB0 15
EA20BB020
n
n
n
0-100A Unidirectional 4-20mA Split-core
0-150A Unidirectional 4-20mA Split-core
0-200A Unidirectional 4-20mA Split-core
n
n
n
n **
n **
n **
* Range set in factory per customer specied value from 0 to ±20A through 0 to ±199A. ** UL Recognized
current monitoring
ACCESSORIES
DIN Rail Clip Set (AH01)
DIN Rail (AV01) and DIN Stop Clip (AV02)
AV02
AH01
AV01
n n
n n
n n
HQ00 01768.C 01131