Johnson Controls 721LC, 721HC, 921 Catalog Page
CURRENT MONITORING
SENSED AMPS
30/60/120A*
4mA
0A
20mA
SENSOR OUTPUT
*Factory calibrated ranges selected
with the amperage range switch
SENSOR OUTPUT
20mA
4mA
0A 50/100/200A
*
(10/20/40A)
SENSED AMPS
*Factory calibrated ranges selected
with the amperage range switch
�
Maximize Reliability
Minimize Installed Cost
56
H721LC
Slide Switch
Scaling for
Easy Setup
Easy
2-wire
Installation
The Hawkeye 721LC, 721HC, & 921 provide accurate load trending in for ma tion
with a proportional 4-20mA output signal. Preset slide-switches provide easy
fi eld setup of sensed amperage range without clum sy jumpers.
APPLICATIONS
■ Load trending
■ Motor control
H921
721LC/721HC/921
Solid- & Split-Core 4-20mA Output Loop Powered
Current Transducers
Loop powered analog current sensor simplifes installation
■ Power the sensor and receive the signal with only two wires...lower cabling
& commissioning costs than with traditional 3-wire sensors
■ Self-gripping split-core for fast retrofi t installation... no need to remove
conductor ( H921)
■ Economical solid-core features adjustable bracket for easy alignment
Selectable factory cali brated ranges up to 200A for increased fl exibility
and resolution
■ Factory calibrated switch selectable ranges for high resolution and
installation ease
■ Three fi eld-selectable ranges per unit... fewer versions to choose from,
stock, and install
■ Mounting bracket for installation fl exibility
■ 5-year limited warranty
H721HC (LC) LINEAR OUTPUT
Scale software as show n
ORDERING INFORMATION
MODEL AMPERAGE RANGE OUTPUT TYPE
H721LC Solid-Core 0-10/20/40A 4-20mA, loop powered
H721HC Solid-Core 0-50/100/200A 4-20mA, loop powered
H921 Split-Core 0-30/60/120A 4-20mA, loop powered
ACCESSORIES
Universal Power Supply, Universal Mou nting Bracket Kit...See page 234
800.354.8556
H921 LINEAR OUTPUT
Scale software as show n
503.598.4564
www.veris.com
©2006Veris Industries
800.354.8556
503.598.4564
www.veris.com
©2006Veris Industries
Optional
DIN Rail
Clip
2.90"
(74 mm)
2.58"
(65 mm)
3.20"
(81 mm)
2.50"
(64 mm)
1.04"
(26 mm)
1.10"
(28 mm)
Self-gripping Iris
0.90"
(23 mm)
0.20"
(5 mm)
0.13" Dia.
(3.3 mm)
1.05"
(27 mm)
2.65"
(67 mm)
0.75" Dia
(19 mm)
0.89"
(22 mm)
2.55"
(65 mm)
2.93"
(74 mm)
Adjustable Mounting Bracket
Removable Mounting Bracket
DIN Rail Clip
Side View
Optional
DIN Rail
Clip
DIN Rail Clip
Side View
Fan or Pump
12-30VDC
POWER SOURCE
+
-
CONTROLLER
+
–
CONTACTOR
AI
Motor
H721LC/721HC/921
CURRENT MONITORING
APPLICATIONS/WIRING EXAMPLE
DIMENSIONAL DRAWINGS
H721LC & H721HC
57
H921
SPECIFICATIONS
Amperage Range See ordering table
Output 4-20mADC
Insulation Class 600VAC rms
Frequenc y 60Hz. nominal
Temperature Range -15° to 60°C
Humidit y Range 0 - 95% non-condensing
Accurac y ±2%
Response Time 2 sec.
Supply Voltage 12-30VDC Loop powered
Supply Current 30mA (max.)
Dimensions ( H721LC & H721HC)
Sensor Ho le Size 0.75" (19mm) Diameter
Dimensions ( H921)…(LxWxH) 2.90" (74mm) x 2.58" (65mm) x 1.04" (26mm)
Sensor Opening Size ( H921)…(LxW) 1.10" (28mm) x 90" (23mm)
2.93" (74mm) x 2.65" (67mm) x 1.05" (27mm)
800.354.8556
503.598.4564
www.veris.com
©2006Veris Industries
Loading...