Koolsure-LN can monitor liquid nitrogen levels in cryogenic storage (for open
dewar ONLY). When liquid nitrogen is below the desired level set by the user, Koolsure-LN
pre-recorded voice message will remind the user to fill up the tank.
Why Koolsure-LN
Do you know that when liquid nitrogen level becomes low, temperature varies at different spots in a Liquid Nitrogen Refrigerator or Dewar and these temperatures are different from that of liquid nitrogen?
How do you tell the liquid nitrogen level in a Liquid Nitrogen Refrigerator or Dewar?
Which method do you use when you try to decide the liquid nitrogen level in your Liquid Nitrogen Refrigerator or Dewar? Do you use a ruler, a stick or a piece of paper? Or do you just estimate by looking with your unprotected eyes?
Have you ever considered the grave and gloomy consequences of losing or wasting resources (money and time) due to sample deterioration caused by improper use of your Liquid Nitrogen Refrigerator or Dewar or not promptly filling up your Liquid Nitrogen Refrigerator or Dewar?
Do you wish that you could receive timely reminder when you need to fill up your Liquid Nitrogen Refrigerator or Dewar?
Features
Modern voice circuit and electronic technology
Alarm system with real voice-message to tell the user what the problem is
Easy to install, easy to use, and the only required maintenance is to replace the battery once in a while
Long battery life. With proper use, battery life is approximately one year. If by chance, a problem occurs during weekends or holidays, Koolsure-LN alarm system can work continuously for about 100 hours
Low battery indicator:human voice and flashing red/green light
Initial alarm activation time:8 min
Alarm repeat interval:8 min
Estimated battery life in standby:1 year
Estimated continuously activated voice battery life:4-5 days (approx. 100 hours)
Recommended installation diagram for Koolsure-LN:
A - lid of cryogenic storage (dewar)
B - wire of the sensor
C - plug of the sensor
D - Koolsure-LN unit
E - plastic strips
F - sensor
G - cryogenic storage
H - minimum level of liquid nitrogen
When ordering the Koolsure-LN liquid nitrogen level monitor, please indicate
the sensor length needed by specifying the associated model #. Refer to the table below for sensor length availability:
