1. INTRODUCTION
The Simpson Electric Hawk 3 Advanced Digital Panel Meter/Controller has both 3-1/2 and
4-1/2 digit displays. All LEDs are 7 segment and offer 5 brightness levels.
This high quality instrument has user-programmable parameters, all set from the front panel in
easy to understand terminology. The display shows activated set point indicators (up to four).
The keypad buttons have both audible and tactile feedback to prevent keystroke errors.
1.1 General Description
DISPLAY
Type 7- segment, red LED, 4 or 5 digits
Height 0.56” (14.2mm)
Brightness 5 settings, user programmable
Decimal Point 4 or 5 position, user programmable
Overrange Indication
(Example: H335)
Underrange Indication
Alarm Indicators 4 LED indicators for up to four independent setpoints
Linearization H335 has a 2 points
H345 has a 16 points
POWER REQUIREMENTS
AC 85 to 250 VAC or 120VAC @ 10VA
DC 9 to 36 DCV @ 10VA
Isolation 250V RMS MAX
Note: Each supply is shown at the maximum and minimum values except the 120 VAC unit, which is allowed
± 10%
ENVIRONMENTAL
Operating Temperature 0 to 50ºC
Storage Temperature -10 to +60°C
Relative Humidity < 80% for the temp. up to 31ºC and decreasing linearly to 50% relative
humidity at 50°C
Ambient Temp 25°C
Temperature Drift ± 100 ppm /°C
Warmup time 10 minutes
NOISE REJECTION
NMRR 60 dB @ 50-60 Hz
CMRR 70 db @ 50-60 Hz
Note: For indoor use to an altitude up to 200m
ANALOG TO DIGITAL CONVERSION
Technique Successive approximation with oversampling
Sample Rate 10 conversions per second
Display Rate User Programmable from 1 - 420 updates / minute (240 default)
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