Transcript Ebtron - viscon-systems.com.au

EBTRON
GTX116-P+
HIGH-PERFORMANCE AIRFLOW MEASUREMENT
WITH TEMPERATURE & ALARM CAPABILITY
24 Oct 2014
OVERVIEW
• Thermal dispersion technology
• 0 to 24.5 m/s range
• 2% of reading sensor airflow accuracy
• Mounting options for internal, insertion or standoff
• Custom built
• 3-year warranty
HOW AN EBTRON
WORKS
Heat dissipated to the airstream is directly related to the
velocity and mass velocity.
Temperature
Sensing
Thermistor
velocity
rvd m
kA
B+C
Q=
(TH – TA)
m
d
( )
Power
DT
Self-heated
Thermistor
Each thermistor is
individually wired to
transmitter using
FEP plenum rated
cable
Airflow
DDC system
calculates velocity
for control process
Many host control
systems can directly
accept our RS-485, Ethernet
or Lon outputs
V Q Output
Application
Controller
Converted back
to analog with
a DAC
Digitally
processed
10101011
Converted to
binary with an
ADC
Each signal is
multiplexed
Self-heated
thermistor
Zero-power
thermistor
Accuracy
=
Probe
Uncertainty
……
The high level output
is converted to
binary by an ADC
in host control system
Sensor cal Data is
stored in “one-wire”
memory
+
Transmitter
Uncertainty
+
Conversion
Error
OUTDOOR AIRFLOW
MEASUREMENT
SENSORS/DUCT AREA
Area (m2)
Sensors
≤0.046
1
>0.046 & ≤0.093
2
>0.093 & ≤0.186
4
>0.186 & ≤0.371
6
>0.371 & ≤0.743
8
> 0.743 & ≤ 1.115
12
> 1.115 ≤ 1.3
14
>1.3 < 9.3
16
PROBE SIZES
Insertion: 153 to 3048mm
Internal: 210 to 3048mm
Stand-off: 102 to 3048mm
CONNECTIVITY
SOLUTIONS
GTC116
Two field selectable 0-5, 0-10 VDC or
4-20 mA isolated outputs
One RS-485 BACnet MS/TP or Modbus
output
GTM116
Two field selectable 0-5, 0-10 VDC or
4-20 mA isolated outputs
One Ethernet BACnet or Modbus output
GTL116
Lonworks
GTD116
USB thumb-drive datalogger, logs
average airflow and temperature plus
airflow and temperature readings of
individual sensors with time stamp
EB-Link Option
Add to any GTx116 transmitter to
interface with infra-red PDA
EQUIPMENT
SCHEDULE