Check/replace AA or C size alkaline batteries. Make sure that Nickel-Cadmium batteries are fully charged. Allow sufficient time for re-stabilization after battery replacement or charging.
Every three months at a minimum. Monthly calibration is recommended, especially for lower range/more critical applications. Our ECS (Electronic Calibration Service) is offered for those customers who find it inconvenient to obtain their own calibration standard.
What is considered “normal” sensor weight loss? [Applicable to LD, RM, and PLC Series continuous monitoring systems, and portable sensors for formaldehyde and hydrazine]
10-20 grams/month. A weight loss of more than 50 grams makes sensor restoration difficult, and beyond 100 grams, it is virtually impossible. Weight loss is affected by ambient humidity, flow rate, and in certain cases, the type of sensor being used. The sensors work best, and last longer, if they are kept moist. If your…
Where can I find information on other gases that might interfere (i.e. affect the reading either positively or negatively) with my measurement?
Please refer to the detailed information provided in our Interfering Gas Data tables. For items not given in these tables, contact the service department
Can you explain the mysterious “2:00 AM false alarms” occurring on my ethylene oxide monitoring system?
Your EtO monitoring system is very sensitive, and must respond to sub parts-per-million (ppm) concentrations of this gas. It may be that maintenance crews are using floor wax, strippers, assorted cleaning products, or isopropyl alcohol, and these compounds can cause a response on the system, especially since they would be present at concentrations in excess…
Typical sensor life is 2-3 years. This assumes proper maintenance, and infrequent exposure to concentrations well above the intended measuring range of the instrument.
This scrubber material comes in purple pellets, that will turn dark brown or black with use. The scrubber should be replaced when the majority of the pellets in the tube have turned color.
Dispose of an old sensor the same way you would dispose of an old car battery. Facilities exist in most communities to handle this type of waste.
Do I need a return material authorization (RMA) number to send equipment back to Interscan for service?
Yes. We do this to serve you better and more efficiently. Please request an RMA form here .
Most orders for sensors and parts can be shipped within two days. If you have a super-rush situation, please notify us! An expedite fee will apply to specially expedited/rush orders.