XL7 Inline Process Viscometer Series

High-Temperature and Hygienic Inline Viscometers for Industrial and Melt Applications.

The Hydramotion XL7 Series offers a versatile line of high-precision inline viscometers designed for continuous viscosity monitoring in a wide range of industrial, hygienic, and high-temperature applications. Built with an all-welded, crevice-free stainless steel construction, these sensors operate without moving parts and are maintenance-free. The XL7 is available in various configurations, including high-temperature (HT2), melt-process (D16), and hygienic (Tri-Clamp) versions, ensuring reliable and repeatable measurement under the toughest conditions.

Key Features

Real-time inline viscosity monitoring with 1-second update interval
High precision and repeatability (±1% accuracy, ±0.3% repeatability)
No moving parts, seals or bearings — maintenance-free
Temperature ranges up to +400 °C (HT2 and D16 models)
Hygienic options with Tri-Clamp fittings for CIP/SIP compatibility
All-welded stainless steel design (SS316/316L, optional alloys)
Ex-certified models available (XL7-150, XL7-150 HT2)
Multiple process fitting options (flange, clamp, thread, custom)
Standard output: 4–20 mA, serial digital, volt-free contacts
Windows-based ViscoLink software for data logging and analysis

Applications

Continuous inline viscosity control in chemical and pharmaceutical manufacturing
Polymer melt monitoring in extrusion or molding processes
Hygienic processing in food, beverage and cosmetics industries
High-temperature reaction and mixing control
Hazardous area applications requiring Ex-certified equipment

Technical Highlights

**XL7-100 (Hygienic)**
Temperature Range: –50 °C to +150 °C
Fitting: Tri-Clamp
Certification: Safe Area
**XL7-100 HT2**
Temperature Range: –50 °C to +400 °C
Fitting: Flanged
Certification: Safe Area
**XL7-150**
Temperature Range: –50 °C to +150 °C
Fitting: Flanged
Certification: Ex ia IIC T4–T6 Ga (Intrinsically Safe)
**XL7-150 HT2**
Temperature Range: –50 °C to +400 °C
Fitting: Flanged
Certification: Ex ia IIC T4–T6 Ga (Intrinsically Safe)
**XL7-D16 (Melt Process)**
Temperature Range: up to +400 °C
Fitting: Custom melt pipe fitting
Certification: Safe Area
**Shared Specifications**
Viscosity Range: 0 – 1 cP to 0 – 10⁹ cP (over 10 models)
Measurement Time: 1 second
Accuracy: ±1% of reading or ±1 digit
Repeatability: ±0.3% of reading or ±1 digit
Pressure Rating: To process fitting specification
Cable Length: Up to 1000 m
Cable Type: Standard instrument cable
Power Supply: 24 V DC via signal processor
Materials: SS316/316L, optional duplex/alloys
Surface Finish: N6 0.8 µm Ra
Ingress Protection: IP67
Software: ViscoLink for PC

Ideal For

Process engineers requiring robust inline viscosity data
Installations with CIP/SIP or hygienic requirements
Polymer manufacturers needing melt viscosity monitoring
Operators in ATEX/IECEx environments
OEMs integrating viscosity control into automated systems

Contact Us

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