Aurora

Reliable moisturemeasurement
Panametrics Aurora analyzer uses tunable diode laser
absorption spectroscopy (TDLAS) to rapidly and accurately
measure moisture in a variety of background gases. Theanalyzer is suitable for installation in hazardous areas andoperates over a wide range of environmental conditions.
Aurora’s fast response immediately alerts when moistureconcentrations are out of compliance or natural gas
dehydration process is upset; once corrected, gas can bequickly cleared for re-entry to pipeline or process.
The Aurora analyzers have an intuitive interface that makes
them easy to learn, configure and operate. With a local service
team to support them, you have the confidence of knowingthat Aurora analyzers are always ready for immediate moisturemeasurements. With power and gas lines easily connected,
the Aurora moisture analyzer provides a wide range of reliablemeasurement with accuracy and fast response you need for
immediate alerts to process upsets or out-of-compliancemoisture concentrations.

RangeFlow RateRange

0 to 5000 ppm
For CO2 applications: 0 to 1000 ppm

Dew/Frost Point-97º to 27.3ºF (-71º to -2.6ºC) frost point@ STP of 25ºC, 14.696 psia

Process Dew/Frost Point

Process or equivalent dew point/
frost point by calculation with processpressure signal (4-20 mA) or constantAbsolute Humidity

0.095 to 237 lbs/MMSFC(1.52 to 3,803 mg/m3)

Analyzer: 100-240 VAC, 50-60 Hz, 24VDC

Analog Outputs

Three 0/4-20 mA DC (source) with 500
ohm load. User programmable for any
parameter and scalable. Complies with
NAMUR protocol for analog signals.

Analog Input

Loop powered 4-20 mA input for
remote pressure transmitter.
Aurora supplies 24 VDC.

Digital Interfaces(Background conditions for individual
instrument calibrated accuracy
provided in Certificate of Conformance.
Accuracy of other parameters derived
from ppmv.)

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

User Interface

Programmable “through-the-glass”
via magnetic stylus±0.2 ppmv or ±0.1%, whichever is greater

Laser

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

Class 1 product. Conforms toIEC 60825-1. Edition 2.0 Safetyof Laser Products

Enclosure

For CO2 applications:±3% of reading or ±5 ppmv
Note: Lower detection limit 20 ppm
For H2 recycle applications: ±1% ofreading or ±2 ppmv (for up to ±5% H2
and ±1% C2H6 variation from nominal
calibration composition)

NIST or equivalent
NMI traceable certification

Calibration Options

Nitrogen, standard natural gas and3 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, fl ow rate andpressure, as well as the change inmoisture concentration.

Pressure
Operating Sample
Cell Pressure

10 to 25 psia (69 to 172 kPa)

Maximum Pressure

200 psi (1380 kPa)
400 psig (2.76 MPa) [2500 psig(17.23 MPa) with heated pressure
regulator option]

Ingress Protection

IP-66

Net Weight

45 kg (100 lb)

Dimensions (H x L x W)

841.2 mm x 461 mm x 332.3 mm(33.12 in. x 18.31 in. x 13.08 in.)

Temperature
Operating-20 to 65°C (-4 to 149°F)

Storage-20 to 70°C (-4 to 158°F)

Optional Heater/Thermostat Set Point

20°C/68°F ±5°C/9°F for US/Canada,10°C/50°F ±5°C/9°F EU and elsewhere

Hazardous Area Certification
USA/Canada

Explosion-proof for Class I,Division 1, Groups B, C, D

EU and Elsewhere

ATEX and IECEx:
Ex de IIB+H2 T6 -20°C to +65°C
Flameproof with increased
safety compartment

Higher pressure available withapplication of additional samplingsystem components.

Copyright 2023 Baker Hughes Company. All rights reserved.
BHCS38655		

5 to 10X of flow rate through sample cell

I/OPowerCalibration Certification

Process Pressure

By-pass Fast LoopDisplay±1% of reading or ±2 ppm, whichever isgreater; for > 1000 ppm, ±5% of reading

Repeatability

10 to 60 SLH (0.4 to 2 SCFH );30 SLH (1 SCFH) nominal

Backlit LCD. Three programablesimultaneous parameters.
Alphanumeric status and diagnostic
display. LEDs for power, laser
temperature stability, keypad lockout

Accuracy

Moisture reading(parts per million byvolume)

Sample Cell Flow Rate(11/2020)

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