Johnson Controls H221, H321, H421 Catalog Page
CURRENT MONITORING
SENSED AMPS
100 to 300A (H221)
300 to 800A (H321)
1000 to 2400A (H421)
0A *
4mA
20mA
SENSOR OUTPUT
*Adjusted with Span Potentiometer
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Maximize Reliability
Minimize Installed Cost
221/321/421
High Amperage Split-Core Current Transducer
52
IDEAL FOR INDUSTRIAL
SIZE LOADS
H221
The Hawkeye 221/321/421 analog current transducers provide reliable load
trending information for large motor loads (up to 2400A) with a proportional
4-20mA signal. Each sensor can be calibrated for maximum resolution using
the span potentiometer.
APPLICATIONS
■ Load trending of large motors
■ Split-core design is ideal for retrofit load trending
H221/321/421 LINEAR OUTPUT
Scale software as show n
4-20mA Loop Powered Output
Monitor larger motors & other loads up to 2400A
■ Split-core design for easy installation
■ Eliminates need for ex ternal CTs on large conductors
■ Large openings for heavy conductors
■ Monitor critical motors (compressor, fuel, etc.)
Loop powered 4-20mA output
■ Two-wire design reduces wiring cost
■ Zero and span adjustment for easy setup and high resolution
■ 5-year limited warranty
ORDERING INFORMATION
MODEL AMPERAGE RANGE OUTPUT TYPE UL
H221 0A 100 to 300A 4-20mA
H321 0A 300 to 800A 4-20mA
H421 0A 1000 to 2400A 4-20mA
Factory calibratio n available upon request
ACCESSORIES
Universal Power Supply, Universal Mou nting Bracket Kit...See page 234
4mA 20mA (SPAN)
800.354.8556
503.598.4564
www.veris.com
©2006Veris Industries
800.354.8556
503.598.4564
www.veris.com
©2006Veris Industries
H221
H321
H421
A = 3.75" (96 mm)
B = 1.51" (38 mm)
C = 1.25" (32 mm)
D = 1.13" (29 mm)
E = 4.20" (107 mm)
F = 4.75" (121 mm)
A = 4.90" (125 mm)
B = 2.89" (73 mm)
C = 2.45" (62 mm)
D = 1.13" (29 mm)
E = 5.57" (142 mm)
F = 5.91" (151 mm)
A = 4.90" (125 mm)
B = 5.50" (140 mm)
C = 2.45" (62 mm)
D = 1.13" (29 mm)
E = 8.13" (207 mm)
F = 5.92" (151 mm)
Motor
CONTACTOR
CONTROLLER
12-30VDC
Po
wer Source
AI
+
+
Fan or Pump
H221/321/421
CURRENT MONITORING
APPLICATIONS/WIRING EXAMPLE
DIMENSIONAL DRAWINGS
H221
53
H321
H421
800.354.8556
503.598.4564
SPECIFICATIONS
Amperage Range:
Model 221 0-300A (potentio meter scalable)
Model 321 0-800A (potentio meter scalable)
Model 421 0-2400A (potentiome ter scalable)
Output 4-20mA
Insulation Class 600VAC rms
Frequenc y Range 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 to 30VDC
Supply Current 30mA max.
Zero Adju stment 3.5 to 4.5mA
www.veris.com
©2006Veris Industries
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