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  Pro-Tech 8505  
  Commercial Carbon Monoxide Monitor - For the Workplace  

Pro-Tech Commercial CO Monitor



  The PRO-TECH 8505 Battery Powered Commercial Carbon Monoxide Monitor includes a continuous digital display, peak level memory, TWA readout, sensor life monitor, and smart backlight.

Carbon monoxide (CO) levels are sampled and recorded every second by an accurate and reliable electrochemical sensor. CO levels detected from 10 to 999 ppm are automatically displayed in the LCD readout. When a chronic carbon monoxide level of 20 ppm or more is detected, a flashing Red LED and 85db pulsating alarm are activated.

Pressing the reset button temporarily mutes the audible signal while the carbon monoxide level is rechecked. If the monitor continues to detect carbon monoxide levels of 20 ppm or more, the audible and visual alarm signals will reactivate automatically within 5 minutes. If carbon monoxide levels drop below 20 ppm, the alarm signals will not be reactivated.

The highest carbon monoxide level detected from 10 to 999 ppm, the duration of the peak level, how long ago the peak occurred, and the average CO level detected for the previous 8 hours can be displayed by pressing the memory button. An internal clock monitors the sensor life and activates visual and audible sensor expiration signals after two years.

The Pro-Tech 8505 Commercial Carbon Monoxide Monitor complies with ACGIH, Cal/OSHA, NIOSH and OSHA workplace exposure limits.


Monitor Features

Battery Powered Commercial CO Monitor
Standard 9vDC Battery
Alpha-Numeric LCD Digital Display
Memory with 30-Day History
Smart Backlight
Electrochemical Sensor
Sensor Life Monitor
Sample Frequency: Every second
Display Resolution: 1ppm
Accuracy: +/-5% or 5ppm*
Self-Diagnostic Circuitry
Test and Mute Button
Separate Memory Recall Button
Power On: Flashing Green LED
Operating Temp: 40F to 100F
Case Color: White
Case Size 5" x 3" x 1

Alarm Signals

TLV Alarm: 20ppm 7 hrs TWA
REL Alarm: 30ppm
3 hrs TWA
PEL Alarm: 45ppm
90 mins TWA
STEL Alarm: 190ppm
5 mins TWA
Audible Alarm Signal: 85db @ 10 ft
Visual Alarm Signals: Flashing Red LED; Displays Current CO Level Detected
Malfunction Signals: 2 Beeps/min; Flashing Red LED; Displays "Err"
Low Battery Signals: 1 Beep/min; Flashing Green LED; Displays Low Battery Icon
Sensor Expiration Signals at Two Years: 1 Beep/min; Flashing Red LED; Displays "End"


Display & Memory

Automatic Continuous Display of Current CO Levels Detected from 10-999 ppm
Manually Displays Peak CO Level Detected from 10-999 ppm
Manually Displays Duration of Peak CO Level and How Long Ago Occurred
Manually Displays the Time Weighted Average (TWA) CO Concentration Detected Over Previous 8 Hours
Stores 30 Days of Data

Standards and Warranty

Complies with ACGIH, Cal/OSHA, NIOSH and OSHA  Workplace CO Exposure Limits
One-Year Limited Factory Warranty

Owner's Manual

*Specifications subject to change without notice. Display accuracy is first year estimate only, and may also be affected by environmental conditions and other circumstances beyond manufacturer's control. This CO monitor is not listed to the residential UL 2034 standard, and is not designed for vehicles or unconditioned spaces. The monitor is intended for use in commercial conditioned space applications.

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