GE Sensing Aurora TransPort Specifications

TransPort Aurora

Reliable, Portable Moisture Measurement

BHGE’s Aurora series of moisture analyzers uses
tunable diode laser absorption spectroscopy (TDLAS) to
rapidly and accurately measure moisture in a variety
of background gases. The Aurora TransPort, the latest
addition to the series, is a battery operated, moveable

analyzer that can be taken into the eld to directly

measure moisture content of natural gas and other
process gases. The unit is assembled into a rugged
and transportable case with a telescoping handle and
wheels.

BHGE’s patented temperature and pressure
compensated TDLAS provides repeatable, accurate
and drift-free moisture measurement with fast
response.

The TransPort is ideal for spot checking the
performance of natural gas processing and drying
systems, gas storage facilities, compression stations,

renery processes, heat treating furnaces, instrument
air and more. It is ideally suited for eld verication

of permanently installed moisture analyzers and
transmitters.

The unit is equipped with a rechargeable battery
that provides 8 to 10 hours of operation as well as
integrated sample conditioning components. An
easy-to-use display/keypad enables direct display
of moisture, temperature and pressure. The unit also
provides both analog (4-20 mA) and digital interfaces
(RS232/485 and Ethernet) for data recording.

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Specications

Range

Calibrated Range 0 to 5000 ppm

For CO2 applications: 0 to 1000 ppm

Lower Detection Level 2 ppmv (-71.7°C)

For CO2 applications: 20 ppmv (-55.3°C)

Dew/Frost Point -97.1° to 27.3°F (-71.7°C to –2.6°C) frost point

@ STP of 25°C, 14.696 psia

Process Dew/Frost Point Process/Equivalent dew Point/Frost point calculation

at user-dened constant pressure or external
pressure specied by Modbus

Absolute Humidity 0.095 to 237 lbs/MMSCF (1.52 to 3,803 mg/m3)

v

v

Accuracy

Parts Per Million by Volume ±1% of reading or ±2 ppmv , whichever is greater; for

Repeatability ±0.2 ppmv or ±0.1%, whichever is greater

Calibration Certication NIST or equivalent NMI traceable certication

Calibration Options Nitrogen, standard natural gas and

>1000 ppmv ±5% of reading

For CO2 applications:
±3% of reading or ±5 ppmv

For H2 recycle applications: ±1% of reading or ±2
ppmv (for up to ±5% H2 and ±1% C2H6 variation from
nominal calibration composition)

(Individual instrument calibrated accuracy conditions

provided in Certicate of Conformance. Accuracy of

other parameters derived from ppmv.)

For CO2 applications: ±1.0 ppmv or ±0.5%, whichever
is greater

3 customizable calibration curves

Response Time

Response Time Optical system <2 seconds

System Response The system response is dependent on the length of

sample tubing, sample system components, ow

rate and pressure, as well as the change in moisture
concentration.

Pressure

Operating Sample Cell
Pressure

Maximum Pressure 30 psig (308.2 kPa)

10 to 25 psia (69 to 172 kPa)

Flow Rate

Sample Cell Flow Rate 0.1 to 1.0 SLPM (0.2 to 2.1 SCFH )

Bypass Fast Loop 5 to 10X of ow rate through sample cell

0.5 SLPM (1.1 SCFH) nominal

I/O

Display Backlit transective display. Three programable

simultaneous parameters. Alphanumeric status and
diagnostic display. LEDs for power, laser temperature
stability, keypad lockout

Power Standard rechargeable lithium-ion battery pack

(14.4V/6600 mAh); Universal 100 - 240 VAC, 50/60 Hz,
120W adapter with 24 VDC output

Analog Outputs Three 0/4-20 mA DC (source) with maximum 500

ohm impedance. User programmable for any
parameter and scalable. Complies with NAMUR
protocol for analog signals.

Digital Interfaces Two programmable digital communications ports:

RS232, RS485 with multidrop capability and
assignable address, MODBUS RTU protocol.
One Ethernet port: Modbus TCP/IP protocol

User Interface Tactile keypad with status/fault indicator LEDs

Laser Class 1 product. Conforms to IEC 60825-1. Edition 2.0

Safety of Laser Products

Enclosure

Net Weight 49 lbs. (22.3 kg)

Dimensions (H x L x W) 24.6 in X 19.7 in X 11.7 in

(624.84 mm X 500.38 mm X 297.18 mm)

Temperature

Operating -20°C to 50°C (-4°F to 149°F) with battery discharging;

0°C to 45°C (32°F to 113°F) with battery charging

Storage -20°C to 50°C (-4°F to 149°F)

Certication

USA/Canada General Purpose (No hazardous area certication)

EU and Elsewhere General Purpose; Complies with 2014/30/EU EMC

and 2014/35/EU LVD harmonizing directives

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© 2017 Baker Hughes, a GE company – All rights reserved.

Baker Hughes reserves the right to make changes in specications and features shown herein, or discontinue the product described at any time without notice or obligation. Contact your BHGE
representative for the most current information. The Baker Hughes logo is a trade mark of Baker Hughes, a GE company. The GE Monogram is a trademark of the General Electric Company.

920-685A