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SPECTRUM Series / SPECTRUM SP Series
Personal Gas Detectors

• Compact Design

• Backlit Digital Display

• "Intelli-Cal" Calibration Procedure

• Dual-Level Alarms

• Password Protected Maintenance Functions

• Audio and Visual Alarms

• Low Battery Alarm

• Built-in Pump (Spectrum SP only)

SPECTRUM and SPECTRUM SP Series instruments are compact, durable and microprocessor-based personal gas monitors. Gas detectors are designed for monitoring the environment by one of two methods, diffusion or sample draw. In the case of diffusion, the SPECTRUM Series is used and natural forces are relied upon to cause the ambient air to interact with the gas sensor. These gas detectors are designed for a variety of applications including use by firefighters, inspectors, emergency service personnel, and industrial applications such as, wastewater  treatment facilities, pulp, paper and steel mills.

As an alternative, the SPECTRUM SP draws the air sample to the sensor using an internal motorized sample pump. The motorized pump provides a continuous air sample to the sensor at a constant flow rate. 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. SPECTRUM SP sample draw system 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 exist, such as, temperature extremes.