Kahn Easidew PRO XP, Руководство пользователя

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Easidew PRO XP User’s Manual
Kahn Instruments 31
APPENDIX D
D.6 Technical Specifications - EX2 LED Display
The display meter is simple in design and is a slave display to the measurement and configuration of
the main transmitter pcb. It can be scaled linearly equating to the circulating 4-20 mA signal output
from the main transmitter pcb.
+
-
LOAD
SUPPLY
Screen or Conduit
TRANSMITTER
LOOP POWER
+VE
VE
-
+VE
VE
-


From main transmitter pcb
Back of display module
Performance
Reference Operating Condition 25 ° C
Maximum Measured Error 0.1% of the programmed range ± 1 digit
Influence of Ambient
Temperature (temp drift)
20 ppm /
°
C of measuring range at 20
°
C as reference temperature
Output Signal 4-20 mA
Supply Voltage 24 V (10 to 30 V)
Voltage Drop Out 3.3 V at 4 mA and 3.7 V at 20 mA
Minimum Current of LED
Activation
3.6 mA
Digits LED, 4 digits 7 segments, height 9.5mm
Display Characteristics 6400ucd for If=10 mA
Storage Period 10 years (non-powered)
Operating Conditions
Ambient Temperature -4 to +176 ° F (-20 to +80 ° C)
Storage Temperature -22 to +176 ° F (-30 to +80 ° C)
Functionality
Parameters Zero, span, decimal, point, refresh rate, unit
Indication Limit -1999 to +9999
Programmable Range -1999 to +9999
Decimal Points Position 0, 1, 2, 3 decimals
Overload Limits From 3.6 to 20.4 mA
Refresh Rate From 1 to 10 seconds
Unit °C, °F, K, % in cycle: 4 second value - 2 second unit
Mechanical Construction
Electrical Loop Connection 2 terminals, max wire section 1mm
2
(16 AWG)