ATAGO® PRM‑100α In‑Line Refractometer
ATAGO® PRM‑100α In‑Line Refractometer
The ATAGO® PRM‑100α is an advanced in‑line refractometer designed to measure the refraction of light between the prism surface and a liquid sample. Upgraded from the PRM‑85, the PRM‑100α offers a wider 0.00 to 100.00% Brix range, improved measurement accuracy, selectable minimum‑indication decimal places, and a simplified two‑piece construction consisting of a detection section and an operation display section. The color display panel provides clear, easy‑to‑read measurement information.
Key Features
- Wide 0.00 to 100.00% Brix measurement range
- Improved accuracy: Brix ±0.05%, refractive index ±0.00010
- Selectable minimum indication decimal place
- Two‑piece construction for simplified installation
- Easy‑to‑read color display panel
- Continuous in‑line measurement of refractive index, Brix, concentration, and temperature
- Specially designed prism prevents buildup of solid materials
More About This Item
The PRM‑100α is ideal for food and beverage production, pharmaceutical manufacturing, industrial fluids, washing systems, and dilution/mixing devices. By attaching the unit directly to a piping system, users can continuously monitor water content, mixing ratios, and concentration levels without manual sampling. Its robust design and high accuracy make it suitable for demanding process‑control environments.
ATAGO in‑line refractometers are manufactured in Japan and known for long‑term reliability, precision optics, and stable performance in industrial applications.
Technical Specifications
- Model: PRM‑100α
- Catalog Number: 3574
- Measurement Items: Refractive index (nD), Brix, concentration (%), temperature
- Range:
Refractive index (nD): 1.32000 to 1.55700
Brix: 0.00 to 100.00% - Resolution:
Refractive index (nD): 0.0001 or 0.00001
Brix: 0.1% or 0.01% - Accuracy:
Refractive index: ±0.00010
Brix: ±0.05% - Temperature Compensation: 5.0 to 100.0°C
- Wetted Parts Temperature Resistance: 5 to 150°C
- High/Low Limit Setting: Control limits adjustable via front‑panel keys
- Output:
RS‑232C
DC 4–20 mA - Alarm Output: Open‑collector output for high‑ and low‑limit alarm settings
- Cable:
Detection section → Display section (power supply 12V and RS‑485)
Standard length: 15 m (maximum up to 200 m)
Included Accessories
- Main unit
- Instruction manual
The PRM‑100α is ideal for continuous, high‑accuracy in‑line measurement in food, beverage, pharmaceutical, and industrial processing environments. Its wide range, improved accuracy, and robust construction make it a dependable solution for real‑time concentration and refractive index monitoring.
This item is NON‑REFUNDABLE/NON‑RETURNABLE once the order is placed. Please call if you are unsure this item will work for you.
| Product Type: | Inline Brix Monitor |
| Brand: | ATAGO |
| Class: | In-Line |
| Range: | 1.32000 - 1.55700nD / 0.0 - 100.0% Brix |
| Resolution: | 0.00001nD / 0.01% Brix |
| Accuracy: | ±0.00010 / ±0.05% Brix |
| ATC: | Yes, Brix only |
| Includes: | Monitor/display/controller unit, prism/detector unit, power supply unit, power cables, 4-20mA output cable, sensor clamp & o-ring, inspection certificate, and Owner's Manual. |



