:: Loop Powered Indicator

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Introduction
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Pantech's
Loop Powered Indicator, model 808
is an ideal instrument for providing indication in the field where
power supply is not available. The instrument derives power from
the loop, i.e. 24 V DC fed to the two wire transmitter or from the
4 – 20mA DC signal fed to the load and displays the value
on a seven segment 3 ½ digit LCD indicator. In doing so,
it utilises around 150 ohms of the load capability of the current
source.
Model
808 indicates the value in engineering units or in terms of percentage.
The calibration can be done in the field by zero and span potentiometers
provided in the unit and jumpers for range selection. Jumpers provided
can also shift decimal point of the display.
The
instrument is available in weatherproof or explosion proof housing
for field mounting, and in DIN format as well as 96mm * 96 mm * 100mm
panel mount version.
Low
drift precession components are used for long term accuracy of the
instruments. All instruments undergo a burn-in for better reliability.
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Specifications
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Input
Current, 4 - 20 mA DC
Input
Impedance
150 on
loop
Display
3 ½ digit LCD
Display
accuracy
+/- 0.1% of span
Power
supply
Not required
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Power
consumption
60 mW max. at 20 mA DC
Ambient temperature
0 - 50° C.
Storage
temperature
0 - 70° C.
Humidity
90% RH (non-condensing)
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