What is YSI 400?

Cost-effective YSI probes measure temperature with YSI PrecisionTM interchangeable thermistors, a highly accurate temperature technol- ogy that YSI invented and perfected over the decades.

What is YSI temperature?

YSI measures temperature with a high-precision thermistor sensor. The resistance of the thermistor changes with temperature. The measured resistance is converted to temperature using an algorithm.

How accurate are temperature probes?

Accuracy: RTDs are generally more accurate than thermocouples. RTDs have typically an accuracy of 0.1°C, compared to 1°C for most. Linearity: The temperature-resistance relation in RTD is almost lineal in the sensor range, while a thermocouple has an ‘S’-type plot.

What are temperature probes used for?

A temperature probe measures temperature by being placed onto a surface, screwed or inserted into an object or submerged in liquid in order to monitor the temperature change.

When did YSI start making precision thermistor probes?

YSI developed the first interchangeable thermistor probes in 1955 and the first line of precision interchangeable thermistors in 1961. In 1982, we introduced the first precision interchangeable glass- encapsulated thermistors. We have improved these products and expanded them into a full line of precision thermistors.

What are the interchangeability of YSI thermistors?

• Interchangeability–YSI thermistors are available with interchangeabilities to ±0.05°C, not just at a single point but over a temperature range from 0 to 70°C. This is a result of precise process control and extreme attention to quality. • Two-Wire Connection– No reference junction compensation necessary as with thermocouples.

What is the maximum operating temperature of YSI?

Maximum Operating Temperature: 105˚C (220˚F) Accuracy and Interchangeability: ±0.15˚C when incorporated in a standard YSI Thermilinear Network. Time Constant, Maximum: 1 sec in well-stirred oil, 10 sec in still air.

Why are YSI thermistors better than Platinum RTDs?

The thermistor’s inherent higher resistance allows for longer lead length without introducing significant errors compared to platinum RTDs, which must operate in a 3-wire or 4-wire mode. • Ruggedness–The NASA qualification program includes numerous tests of ruggedness, which YSI thermistors continue to pass.