Model 934 Sensor Specific Gas Analyzer0 pages

WESTERN RESEARCH

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PROCESS INSTRUMENTS

Model 934 Sensor Specific Gas Analyzer
Benefits
►tNo-moving-parts design
►tSample return to process (with
HAG probe option)
►tMinimal sample conditioning
►tLow maintenance design
►tMinimal calibration drift
►tStream switching capability

Typical Applications
►tAmine-based tail gas treating
t (H2 TGTU Absorber Overhead)

Introduction
The Model 934 is a rugged, analyzer adapted
from the Model 931/932 UV analyzer platform for
measurement of Hydrogen in TGTU Applications
where the UV (H2S) is not required. The Model
934 analyzer system has a heated cell to avoid
any hydrocarbon or water condensation. A fully
integrated AMETEK Process Instruments sample
system ensures reliable dew point control without
running the risk of plugging, contaminating, or
flooding the analyzer. Many process applications
require the detection of species which do not
absorb ultraviolet light.

Performance Specifications
Methodology: Thermal Conductivity
Standard Range
H2: 0 to 5% or 0 to 10%.
Other components and ranges are available upon request.
Other measurements include COS, CS2, & H2S.
Accuracy:
(TCD) H2 sensor for TGTU applications: ±5% of full scale
Optional (IR) sensor for THC, CO2: application specific,
consult factory
Linearity: Better than ±1% of full scale for H2S
Zero Drift: Better than ±2% of full scale, with auto zero
disabled over 24-hour period
Speed of Response: Typically less than 30s to T90 (excluding
sample system)
Number of Gases: one
Zero Gas: Nitrogen or instrument air
Maximum Sample Cell Pressure: 6.9 barg (100 psig)
Maximum Sample Gas Temperature: 165 ºC (329 ºF)
Typical Sample Flow: 2.5 L/min (5 SCFH)
Sample Transport: Application dependant (options include
Heated Acid Gas probe)
Outputs: Up to 4 isolated 4-to-20 mA, loop or self-powered,
30 VDC Max; 4 non-isolated 1 to 5 VDC; 5 independent sets
of SPDT, Form C, potential free alarm relay contacts, 2 A at
240 VAC
Digital Communication: RS485 Modbus port; RS232 / RS485
service port
Utility Requirements:
t 120 VAC (104 to 132 VAC), 47 to 63 Hz, <3A
t 240 VAC (207 to 264 VAC), 47 to 63 Hz, <2A
Power Consumption: 500 W max. (with heated probe and
cell)
Ambient Temperature: 0 to 50˚C (32 to 122˚F)
Physical Dimensions: 1185 x 780 x 254 mm
t (46.65 x 30.7 x 9.97 in.)
Weight: Approximately 145 kg (320 lbs)
Approvals and Certifications:
t CEC Class I, Division 1, Groups C&D; Ex dIIB T3
t NEC Class I, Division 1, Groups C&D; AEx dIIB T3
t ATEX II 2 G Ex d IIB T3 Gb
t Complies with all relevant European directives

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