Guide to Representative Sampling
Learn the many benefits of representative sampling and get answers to your representative sampling questions
The Sentry Sample Sentry II is designed to meet requirements for representative sampling by maintaining a constant flow rate with varying inlet conditions. EPRI-sponsored research and plant chemistry experts agree on the need for sampling at a constant velocity of 5–6 feet per second (1.5–.8 meters per second) for water samples with varying source pressures. Automated flow control is the only way to obtain constant sample flow regardless of source pressure.
The Sample Sentry II, a patented automated sample conditioning module for remote or centralized sampling, has been designed to meet today’s requirements for representative sampling by maintaining a constant flow rate despite varying conditions and employs industry-proven Sentry conditioning components.
Digital control and display with alarm and shutoff capability improves operator safety and protects analyzers against over-temperature and pressure conditions. “Smart” sample modules with network communications for remote computer display and control:
|Ambient Temperature||32°–122°F (0°–50°C); RH 95% max. non-condensing at 104°F (40°C)|
|Display||graphical vacuum fluorescent display|
|Flow Control||0–3400 cc per minute, ± 5% of full scale|
|Input Power||100–240 Vac, 1 ph, 50/60 Hz|
|Instrument Air Required||80–120 psi (5.5–8.3 bar); air consumption <0.2 scfm (<0.34 scmh)|