In-Stream Hydrogen Sulfide Analyzer
The Model 4400 In-Stream Hydrogen Sulfide Analyzer
is used to continuously verify the H2S content of a natural gas sample for the presence of 0-100 ppm levels of
Hydrogen Sulfide. This system is used to insure that
H
S levels in natural gas collection lines remains at ac-
2
ceptable levels to help guard against the corrosive effects of H2S 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
H2S concentration in the 0-100 ppm range. Fast response of 90% of step change within 30 seconds enables 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 mechanical 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 slipstream 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
A 4-20 mA linear signal proportional to sample concentration is provided from the sensor assembly . This signal can interface with a Sierra Monitor Model 4107-99
Transmitter/Display , a single channel controller , the Sentry 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 H2S concentration, dual
concentration alarm contacts, 4-20 mA output and serial MODBUS communication. The Model 5100-99-IT AL can be mounted directly to the Model 4400 H2S Analyzer 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
Sierra Monitor Corporation 1991 Tarob Court Milpitas, CA 95035 USA (408) 262-6611 (800) 727-4377 Fax: (408) 262-9042
Specifications:
Model 4400
In-Stream Hydrogen Sulfide Analyzer
4400 In-Stream Analyzer
Power: 24VDC
Output: 4-20 mA = 0-100 ppm H
Environmental:
Temperature Range
Operating:: -20 to 50
Storage: -40 to 50
Humidity: 0-95% RH (non-condensing)
Sensor:
Range: 0-100 ppm Hydrogen Sulfide
Type: Electrochemical
Life: Approximately 1 year in cycled
service
Response: <30 seconds to 90% FS
Mechanical:
Area Classification: Div 1, Class 1, Groups B,C,D
Enclosure: NEMA-1 with removable cover panel
Mounting: installs on 9” x 7” “H” Frame
Connections: 3 position terminal strip with
separate conduit
Dimensions (WxHxD): 9.0 x 11.0 x 4.0 inches
(22.9 x 27.9 x 10.2 cm)
Weight: 5 lbs (2.2 Kg)
Warranty: 2 years as non non-consumable items
o
C (-4 to 122oF)
o
C (-40 to 122oF)
S
2
5100-99-IT Transmitter/Display
Power: 24VDC
Operating
Temperature Range: -40 to 50
Display: Fixed and Scrolling LED
Optional Alarms: Dual level alarms (8A) plus
fault alarm (4A)
Serial Output: Bi-directional RS-485
MODBUS
Mechanical:
Housing: Aluminum: Epoxy-coated, die-cast,
copper-fire aluminum
Stainless Steel: 316 Stainless Steel
Dimensions( WxHxD):
Aluminum: 6.0 x 4.4 x 4.9 in.
316 Stainless Steel: 5.9 x 4.8 x 4.9 in.
Weight:
Aluminum: 2.7 lbs (1.3 Kg)
316 Stainless Steel: 5.4 lbs (2.6 Kg)
o
C (-40 to 122oF)
®
protocol
Ordering Information:
4400-10 In-S tream Hydrogen Sulfide Monitor
5100-99-IT-AL Single Point Explosion Proof Transmitter/Display - Aluminum
5100-99-IT-SS Single Point Explosion Proof Transmitter/Display - S tainless S teel
Model 5100-99-IT-AL Transmitter/Display
Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 (408) 262-661 1 800-727-4377 FAX: (408) 262-9042
Visit our Web site at: www .sierramonitor .com E-Mail: sales@sierramonitor .com
© 2009 by Sierra Monitor Corporation