Is there a guide for using the Model 202 to detect partial discharges?

Technical Note No. 021 

Quick Start Guide for Using the Model 202 Ozone Monitor™ to Detect Partial Discharges 

Date:  10 November 2008 

Author:  Craig Williford 

Purpose:  The Model 202 Ozone Monitor has been demonstrated to be useful in detecting the 
presence of surface partial discharges for large rotating machines such as motors and electrical 
generators and for monitoring changes in the severity of such discharges. 

Quick Start Procedure: 
1. Remove monitor from package. 
2. If using external battery to power instrument, charge battery using the battery charger for 13
14 hours.   
3. Plug power supply into instrument.  If using external battery, use supplied cigarette adapter to 
plug into instrument.  If using wall power, plug supplied AC-DC converter into instrument.  
4. Turn on power. 
5. The instrument is now measuring ozone.  Allow approximately 20 minutes for the instrument to 
warm up and the readings to stabilize. 
6. The LCD on the front displays the current ozone reading every 10 seconds along with the 
temperature and pressure of the internal cell, and the date and time of each reading.  The 
analog output BNC connector is located on the back side of the instrument.  It is set by default 
to output 1 Volt for 200 ppb with a maximum output of 2.5 Volts.  You may adjust the scaling of 
the analog output and the averaging times (10 s, 1 min, 5 min, 1 hr) in the menu.   
7. Connect the length of supplied tubing to begin measuring ozone from desired location.  Use 
the inlet to make ozone measurements at various exhaust air positions to isolate regions 
where surface partial discharges may be occurring.  Repeated measurements may be made 
over time to monitor changes in the severity of the partial discharge.

8. Refer to the user manual for additional details on use of the Model 202 Ozone Monitor.