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SPECTRUM SP Series Personal Gas Detectors
With Sample Pump for O3, HF
and Other Reactive Toxic Gases
Built-in Pump
Compact Design
Backlit Digital Display
"Intelli-Cal" Calibration Procedure
Dual-Level Alarms
Password-Protected Maintenance Functions
Audio and Visual Alarms
Low-Battery Alarm
Gas detectors are designed for monitoring the environment by one of two methods, diffusion or sample draw. In the case of diffusion, natural forces are relied upon to cause the ambient air to interact with the gas sensor. As an alternative, the air sample can be drawn to the sensor using either a hand-operated, squeeze-bulb aspirator or a motorized sample pump. Obviously, the motorized pump is much more convenient and easier to use, and it can provide a continuous air sample to the sensor at a constant flow rate.
Sample draw reduces gas response time compared to natural diffusion, and it facilitates testing of valves, pipe connections, etc. for leaks, and enables the monitoring of remote areas or enclosed vessels where non-ambient conditions may exist, such as, temperature extremes.
A properly designed sample draw system can improve the monitoring performance for most gases, particularly acid gases like Cl2 and HCl. It also reduces the response times for gases to be detected at sub-ppm concentrations, such as, AsH3. And, most important, sample draw is required for the detection of some gases, most notably, HF and O3. It is for these reasons that the SPECTRUM SP Series was developed.
Gases Detected
Gases Detected
Range
Alarm 1 (1)
Alarm 2 (2)
Chlorine, Cl2
10.0 ppm
1 ppm
5 ppm
Hydrogen sulfide, H2S
200 ppm
10 ppm
25 ppm
Hydrogen chloride, HCl
20.0 ppm
5 ppm
10 ppm
Sulfur dioxide, SO2
20.0 ppm
5 ppm
10 ppm
Hydrogen fluoride, HF
10.0 ppm
3 ppm
6 ppm
Ozone, O3
0.99 ppm
0.10 ppm
0.20 ppm
Carbon monoxide, CO
1000 ppm
35 ppm
200 ppm
Hydrogen, H2
1000 ppm
200 ppm
750 ppm
Nitrogen dioxide, NO2
10.0 ppm
3 ppm
5 ppm
Nitric oxide, NO
100 ppm
25 ppm
50 ppm
Ammonia, NH3
100 ppm
25 ppm
50 ppm
Arsine, AsH3
0.99 ppm
0.05 ppm
0.10 ppm
Saline, SiH4
30 ppm
5 ppm
10 ppm
(1) Alarm adjustable, audio alarm acknowledgeable (can be silenced)
(2) Audio alarm reactivation, not acknowledgeable (cannot be silenced)
Specifications
Sensor:
Electrochemical
Display:
8 character, high contrast dot matrix LCD with backlight
Power:
Rechargeable 4.8V NiMH battery.
Enclosure:
ABS plastic
Temperature Range: 14 to 113 ° F
(-10 to +45 ° C)
Alarm Points: Two (high/low), audio & visual
Visual Alarm:
Red LED
Audio Alarm:
75 dB at 10 cm. Confidence chirp every 30 seconds.
