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Measuring and Recording Instruments

Test and Measurement Equipment

 Products in Stock
Terra provides versatile, economical instruments for monitoring of particles, air flow, temperature, humidity and pressure.

Particle Counters

Particle Counters

See the full line of hand-held, portable and benchtop air particle counters. They are ideal for fast and accurate room or chamber measurements

Air Flow Measuring

Air Flow Measuring

Air flow instruments for pressure, temperature and velocity measurements in critical environments; accurate and easy-to-use products

Temperature and Humidity Measuring

Temperature and Humidity Measuring

Capture accurate environmental condition data via hygrometers, chart recorders, data loggers, thermometers, & psychrometers

Related Products

Related Products

A fast, compact solution for analyzing electronic component specs, such as voltage and capacitance, in routine applications or trouble-shooting

Inquiries from Representatives Welcome!
  Terra seeks experienced technical sales partners to represent its product lines, both inside and outside the US. A variety of sales tools support representatives' efforts, including branded catalog and email programs and an online portal that provides visibility of customer activity. More Information . . .
File Type File Name Publication Date
Tech Resource (PDF) ISO Cleanroom Standards and Federal Standard 209E
Understand the international ISO cleanliness standards (ISO 4, ISO 5, ISO 6, etc.) and how they correlate to the U.S. Fed-Std 209E designations (Class 10, Class 100, Class 1000, etc.). This guide also discusses other key cleanroom recommendations on cleanroom air change and velocity rates, clean room ceiling fan coverage, positive vs. negative internal cleanroom air pressure, and laminar vs. turbulent air flow.		 05/15/2015
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