Sierra Monitor Corporation 4400 - Manual

Sierra Monitor Corporation 1991 Tarob Court Milpitas, CA 95035 USA (408) 262-6611 (800) 727-4377 Fax: (408) 262- 9042
The Model 4400 In-Stream Hydrogen Sulfide Analyzer
is used to continuously verify the H
2
S content of a natu-
ral gas sample for the presence of 0-100 ppm levels of
Hydrogen Sulfide. This system is used to insure that
H
2
S levels in natural gas collection lines remains at ac-
ceptable levels to help guard against the corrosive ef-
fects of H
2
S on compressors, pipelines and process
equipment. It is intended for continuous monitoring prior
to the addition of odorants to the gas.
The Sierra Monitor Model 4400 provides the user with a
low-cost, easy-to-use solution to effective monitoring of
natural gas streams. This system accurately measures
H
2
S concentration in the 0-100 ppm range. Fast re-
sponse of 90% of step change within 30 seconds en-
ables the user to respond quickly to changes in natural
gas supply conditions to prevent product contamination.
There is minimal maintenance with the Model 4400 with
no tapes to replace, no conditioning solutions, no me-
chanical stream blenders to calibrate. Calibration is easy
with external application of span gas and simple one
person adjustments. Calibration and swapping of the
gas sensor is a quick and simple operation performed
every two weeks.
The 4400-10 receives a low pressure natural gas slip-
stream sample. A flow controller in the system delivers
a constant flow to the gas sensor and allows for easy
calibration and maintenance. An in-line coalescing filter
protects the system from sample contaminants.
Model 4400
In-Stream Hydrogen Sulfide Analyzer
A 4-20 mA linear signal proportional to sample concen-
tration is provided from the sensor assembly. This sig-
nal can interface with a Sierra Monitor Model 4107-99
Transmitter/Display, a single channel controller, the Sen-
try multi-channel controller or most industry standard
controllers or PLCs.
The Model 5100-99-IT-AL Transmitter/Display option can
accept the 4-20 mA signal from the Model 4400-10 and
provide digital display of the H
2
S concentration, dual
concentration alarm contacts, 4-20 mA output and se-
rial MODBUS communication. The Model 5100-99-IT-
AL can be mounted directly to the Model 4400 H
2
S Ana-
lyzer or at a remote location. The Model 5100-99-IT-AL
is mounted in an explosion proof enclosure available in
aluminum or stainless steel enclosures.
Features Benefits
„ No tapes to replace or conditioning solutions Minimal maintenance, no hazardous material to
dispose
„ Fast response Prevention of product contamination
„ Simple one-person adjustments Easy calibration, minimal service time