Model SG1
www.detcon.com
Portable Single Gas Detector
Operator’s Instruction Manual
Covers O2, CO, H2S, H2and SO2Models
DETCON, Inc.
3200 Research Forest Dr.,
The Woodlands, Texas 77387
Ph.281.367.4100 / Fax 281.298.2868
June 7, 2011• Document #3734 • Revision 0.0
Warranty and Repair
Detcon Inc. warrants the Model SG1 series to be free from defects in workmanship
of material under normal use and service for two years from the date of shipment.
Detcon will repair or replace the defected product during the warranty period at
no cost. However, Detcon is not responsible and will not repair or replace the
product at no cost under the following cases; the product has been purchased
through an unauthorized dealer, the product has been damaged or deformed
mechanically through user misuse, the product has not been properly calibrated or
has had parts inappropriately replaced in accordance with this operating manual.
In the event that any defect or issue with the product occurs during the warranty
period, Detcon will cover all expenses except for shipping fees. After the warranty
period expires, the expense of repair or replacement and shipping of the product
will be the responsibility of the customer. Detcon will not be responsible for any
indirect occurrence or accident and/or damage during the use of the product, and
the warranty shall be limited to the replacement of parts and product. The warranty
only applies to customers who purchased the product through Detcon and the
warranty repair is to be performed by the Detcon Service Department.
Product Information
Detcon Model SG1 is a portable single-gas detector that uses electrochemical sensor
technology to detect and monitor hydrogen sulfide, carbon monoxide, hydrogen, oxygen
and sulfur dioxide. This lightweight, compact gas detector is controlled by an advanced
microprocessor allowing for automatic zero-calibration and easy span calibration set up.
During normal operation the large backlit LCD screen continuously displays battery life
and real-time gas concentration in ppm or concentration of oxygen by percentage.
The SG1 features advanced STEL (Short Term Exposure Limit) and TWA (Time Weighted
Average) functions to prevent dangerous prolonged exposure to a specified gas.
Maximum and minimum gas concentrations can also be programmed and monitored. The
portable gas detector features an easy to use touch-button interface with simple-to-follow
display symbols. Users are alerted to hazardous conditions via three alarm functions:
vibration alert, LED alert lamp and an audible buzzer with low and high settings of up to
90 dB. Weighing just 4.6 ounces, the SG1 is housed in a sturdy rubber enclosure that is
shock resistant. It includes a heavy-duty stainless steel alligator belt clip and has a
minimum battery run time of 4,500 hours.
1
Table of Contents
Product Specification ------------------------------------------------3
Names and Functions of Exterior ------------------------------4
Start of Operation ----------------------------------------------------5
Operation Method ----------------------------------------------------6
Calibration --------------------------------------------------------------7
Method of Alarm Set-up and Display -----------------------9
Applicable Battery and External Pump---------------------12
Battery & Sensor Replacement --------------------------------13
Operational Flow Chart -------------------------------------------14
Notice for User and Parts List ---------------------------------15
2
3
Product Specification
Model SG1-O2 SG1-CO SG1-H2S SG1-H2 SG1-SO2
O
2
Measured Gas
0~30%
Measurement
Method
Principle of
Measurement
Electrochemical Type
Diffusion Type
Monitor Custom-made Digital LCD
Alarm 90dB
Alert Lamp Red LED
Vibration Alert Vibration Alarm
Power Source CR2
Applicable
Temperature &
-20 °C ~ + 50°C, : 10% ~ 95 % RH (no n-cond ensing )
Humidity
Explosion-Proof EEx ia IIC T4 / IP67
CO H2S H
0~500ppm
0~1,000ppm
0~100ppm
0~200ppm
2
0~20ppm
0~100ppm
SO
2
0~20ppm
0~100ppm
Case Rubber PC Case
Standard
Accessories
Optional
Accessories
Exterior
Belt Clip, Calibration Cap
Small-Sized Pump for Sampling
Dimension: 54mm(W) x 91mm(H) x 32 mm(D)
Weight: 120g (Including )
Specification of External Pump (Optional)
Power Source AA Size Alkaline Battery, 1 ea
Continuous
Operation Time
Applicable
Tempe rature &
Humidity
Exterior
Sampling Flux 0.5 liter / minute
Available to Operate for 5 hours or longer
-20°C ~ + 5 0°C, 0 to 9 5 % RH
Dimension: 34mm(W) x 270mm(H) x 47 mm(D)
Weight: 200g (Including )
Diagnosis Function Deadlock Alarm, Alert of Insufficient (Red LED Display)
4
Names and Functions of Exterior
1. Gas Sensor
2. Buzzer
3. LCD Display
4. Power Key
LCD display symbols
5. Backlight/Arrow Key
6. Alarm LED
7. Fastening Clip
8. Type Label
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