Product Overview
Screen Cage Psychrometer - JRD Merrill Speciality Equipment Model 74 with 60 foot cable.
Condition: Unused, new old stock, in original OEM packaging.
Product Overview
The Screen Cage Psychrometer by JRD Merrill Speciality Equipment, model 74-60, is a specialized instrument designed for measuring water potential in plants and soil. It features a 60-foot cable and a Viking connector, making it suitable for various field research and environmental monitoring applications.
Key Features
- Screen Cage Design: The psychrometer features a screen-caged thermocouple, allowing for rapid vapor equilibration while restricting contaminants.
- Thermocouple Technology: Utilizes thermocouple psychrometry for accurate water potential measurements.
- Protective Housing: The stainless-steel screen cage with a 25 μm pore size ensures faster equilibration compared to ceramic-cupped sensors.
- In-Situ Measurements: Designed for on-site measurements, making it ideal for field research.
- Long Cable: The 60-foot cable provides flexibility in field setups, allowing measurements at a distance from the recording equipment.
Applications
- Plant and soil water potential measurements
- Agricultural research
- Environmental monitoring
- Soil science studies
Advantages
- Rapid Equilibration: The screen-cage design allows for faster vapor equilibration compared to ceramic-cupped sensors.
- Contamination Prevention: The screen cage restricts the entry of contaminants into the psychrometer cavity.
- Field-Ready: Suitable for extended field use, as indicated by previous research on screen-covered thermocouple psychrometers.
Frequently Asked Questions (FAQ) about the Screen Cage Psychrometer
What is a Screen Cage Psychrometer?
A Screen Cage Psychrometer is a specialized instrument used to measure water potential in plants and soil. It features a thermocouple protected by a stainless-steel screen cage, allowing for rapid vapor equilibration while restricting contaminants.
How does the Screen Cage Psychrometer work?
The Screen Cage Psychrometer uses thermocouple psychrometry to measure water potential. The screen cage design allows for faster equilibration compared to ceramic-cupped sensors, while protecting the sensing junction from contaminants.
What are the main applications of this psychrometer?
- Plant water potential measurements
- Soil water potential measurements
- Agricultural research
- Environmental monitoring
- Soil science studies
What are the advantages of the Screen Cage design?
The Screen Cage design offers several benefits:
- Rapid equilibration compared to ceramic-cupped sensors
- Prevention of contaminant entry into the psychrometer cavity
- Suitability for extended field use
What is the cable length of this psychrometer?
The JRD Merrill Speciality Equipment 74-60 V Screen Cage Psychrometer comes with a 60-foot cable, allowing for measurements at a distance from the recording equipment.
Is this psychrometer suitable for in-situ measurements?
Yes, this psychrometer is designed for in-situ (on-site) measurements, making it ideal for field research and environmental monitoring.
What type of connector does this psychrometer use?
This model uses a Viking Connector.
How does this psychrometer compare to digital hygrometers?
While digital hygrometers measure relative humidity directly, the Screen Cage Psychrometer measures water potential, which is crucial for understanding plant and soil water status. It's particularly useful in research settings where precise water potential measurements are required.
What maintenance does the Screen Cage Psychrometer require?
Regular maintenance includes:
- Cleaning the screen cage to prevent clogging
- Checking and replacing the thermocouple if necessary
- Calibrating the instrument periodically to ensure accuracy
- Protecting the cable from damage during field use
About JRD Merrill Specialty Equipment
A Legacy of Precision Instruments
JRD Merrill Specialty Equipment, founded in 1973, has established itself as a leading manufacturer of measuring and controlling devices. Based in Logan, Utah, the company has been at the forefront of developing specialized scientific equipment for nearly five decades.
Commitment to Innovation
JRD Merrill's dedication to innovation is evident in their product line, which includes advanced instruments like the Screen Cage Psychrometer. This commitment to cutting-edge technology has made them a trusted name in agricultural research, environmental monitoring, and soil science studies.
Local Roots, Global Reach
While proudly rooted in Logan, Utah, JRD Merrill Specialty Equipment has expanded its influence far beyond local borders. Their instruments, known for reliability and precision, are used by researchers and professionals worldwide.
Customer-Centric Approach
JRD Merrill's success is built on more than just quality products. The company is known for its exceptional customer service, ensuring that users of their specialized equipment receive the support they need. This commitment to customer satisfaction has earned them positive reviews and loyal customers across various scientific fields.
Continuing a Tradition of Excellence
As JRD Merrill Specialty Equipment continues to evolve and innovate, they remain true to their founding principles of quality, precision, and customer focus. Their ongoing contributions to scientific instrumentation make them a valuable partner for researchers and institutions seeking reliable, state-of-the-art measurement tools.