Basler Electric DGC-2020 - Manual (Page 36)

LCD Heater
The ambient temperature is monitored by a temperature sensor located near the LCD inside the DGC-
2020. The LCD heater turns on when the ambient temperature falls below 0
°C (32°F). The heater turns off
when the ambient temperature rises above 5 °C (41°F). This range of operation implements 5°C (9°F) of
hysteresis between heater turn on and turn off.
Type Tests
Vibration ............................................ EN60068-2-6
Dielectric Strength ............................ EN60664-1
Impulse ............................................. EN60664-1
Transients ......................................... EN61000-4-4
Static Discharge ................................ EN61000-4-2
Shock
Withstands 15 G in 3 perpendicular planes.
Vibration
Swept over the following ranges for 12 sweeps in each of three mutually perpendicular planes with each
15-minute sweep consisting of the following:
5 to 29 to 5 Hz .................................. 1.5 G peak for 5 minutes
29 to 52 to 29 Hz .............................. 0.036 inches (0.914 mm) double amplitude for 2.5 minutes
52 to 500 to 52 Hz ............................ 5 G peak for 7.5 minutes
Radio Interference
Type tested using a 5 W, hand-held transceiver operating at random frequencies centered around 144
and 440 MHz with the antenna located within 150 mm (6”) of the device in both vertical and horizontal
planes.
HALT (Highly Accelerated Life Testing)
HALT is used by Basler Electric to prove that our products will provide the user with many years of
reliable service. HALT subjects the device to extremes in temperature, shock, and vibration to simulate
years of operation, but in a much shorter period span. HALT allows Basler Electric to evaluate all possible
design elements that will add to the life of this device. As an example of some of the extreme testing
conditions, the DGC-2020 was subjected to temperature tests (tested over a temperature range of
–100
°C to +115°C),
vibration tests (of 5 to 50 G at +20
°C), and temperature/vibration tests (tested at 40 G
over a temperature range of –80
°C to +90°C). Combined temperature and vibration testing at these
extremes proves that the DGC-2020 is expected to provide long-term operation in a rugged environment.
Note that the vibration and temperature extremes listed in this paragraph are specific to HALT and do not
reflect recommended operation levels. These operational ratings are included in Section 1 of this manual.
Ignition System
Tested in close proximity to an unshielded, unsuppressed Altronic DISN 800 Ignition System.
Environment
Operating Temperature .................... –40 to +70
°C (–40 to +158°F)
Storage Temperature........................ –40 to +85
°C (–40 to +185°F)
Humidity ............................................ IEC 60068-2-38
Salt Fog ............................................ ASTM B 17-73, EN 68-2-11
Ingress Protection ............................. IEC IP54 for front panel
UL Recognition
The DGC-2020 is recognized to applicable Canadian and US safety standards and requirements by UL.
Standards used for evaluation:
•
UL6200
•
CSA C22.2 No. 14
CAUTION
To follow UL guidelines, replacement of the backup battery for the real-time
clock should be performed only by qualified personnel.
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