skip to Main Content
SRD
Inline process density meter and viscometer

in-line, online, real-time viscosity & density tracking

3-in-1 process instrument

Density meter, Viscometer and Temperature gauge all-in-one. Small form-factor robust device.

Repeatable, Reproducible

Newtonian, non-Newtonian, Single and Multi-phase fluids

All 316L stainless steel wetted parts

Hermetically sealed, metal-metal process sealing – no elastomer needed.

Built-in fluid temperature measurement

Excellent cross-relation between temperature and viscosity.

SPECIFICATIONS
Fluid measurements
Density Range0.4 - 1.5 g/cc
Density Accuracy0.01 g/cc
(0.001 g/cc & higher accuracy available)
Viscosity Range1 to 3,000 cP (standard)
Wider range available
Viscosity Accuracy5% of reading (standard)
1% & higher accuracy available
ReproducibilityBetter than 1% of reading
TemperaturePt1000 (DIN EN 60751 cIass B)
Operational conditions
Process Fluid Temperature-40 up to 300 °C (575°F)
Ambient Temperature-40 up to 150 °C
Pressure Rangeup to 7,500 psi (500 bar)
OPERATING PRINCIPLE
  • The rheonics SRD measures viscosity and density by means of a torsional resonator, one end of which is immersed in the fluid under test.
  • The more viscous the fluid, the higher the mechanical damping of the resonator. By measuring the damping, the product of viscosity and density may be calculated by rheonics’ proprietary algorithms.
  • The resonator is both excited and sensed by means of an electromagnetic transducer mounted in the sensor’s body.
  • Damping is measured by the rheonics patented sensing and evaluation electronics and stable, high accuracy and repeatable readings are obtained based on rheonics’ proven gated phase-locked loop technology.
Operating principle
FEATURES
Robust and Compact Process Densitometer + Viscometer
SRD_dimensions

Small Form Factor

Fits in your palm but more robust than other inline viscometers.

Easy installation

Install in existing ports with threaded, flanged, and other process fittings. Available with standard and custom process fittings.

Easy integration

User friendly electrical connections without any screws. Programming needs at minimum with industry standard protocols.

Highly immune

Combination of patented mechanical and electrical design with advanced noise cancellation electronics gives high accuracy in high EMI, vibrations.

Wide Operational Capabilities

Density Range

0.4 – 1.5 g/cc
400 – 1500 kg/m3
3.34 – 12.52 lb/gal

Density Accuracy

0.001 g/cc
1 kg/m3
0.008 lb/gal

Higher accuracy available

Viscosity Range and Accuracy

0.5 – 3,000 cP
Wider range available

Accuracy – 1% and higher

Pressure

upto 7500 psi (500 bar)

Temperature

-40°C to 300°C (575°F)

Fluid Types

Newtonian
non-Newtonian

Analysis and Acquisition Softwares
10_dashboard_d2_1@2x-100
Insensitive to Mounting Conditions
Sensor_Pipe_mounting
Sensor_Tank_mounting

Balanced Resonator

Unique patented co-axial resonator. High immunity of external vibrations and shocks.

Direct Mounting in tanks/pipes

Two ends of the sensors twist in opposite directions, cancelling out reaction torques on their mounting

Extended Mount

Insert sensor to the middle of flow in large tubes or in deep tanks. No limit to insulation depths.

Process Viscosity Monitoring, Storage & Analyzer
PC_DATA
11_dashboard_d3_process_view@2x-100

Powerful, intuitive GUI with measurement acquisition, analysis & logging.

On-device(edge), cloud and PC data acquisition and analysis

API for data acquisition and integration in customer applications

Ruggedised electronics deliver accurate, fast and reliable measurements
SME_TRD_WITH_SRD_WITH_CABLE_RGB

Sophisticated, patented 3rd generation electronics drive these sensors and evaluate their response. Ultra-fast and robust electronics, combined with comprehensive computational models, make SRDs one of the fastest and most accurate in the industry. SRD gives real time, accurate viscosity measurements every second and not hardly affected by flow variations!

Process Control

  • PLC Integration
  • IP integration
  • Standalone

Cloud based process control

  • OPC UA
  • JSON
  • TCP/IP

Edge process control

  • Analog Communication
  • Digital Communication
  • Integrated Webserver
Multiple communication options available
Electronics

4-20 mA

RS 485

Modbus TCP

Ethernet

TCP/IP

Modbus

TCP

USB

SD Card

HART Ready

Wireless Ready

Certifications
Iec Iecex Logo

IECEx

Certificate issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standards listed in the certificate

Atex Certification Services 500×500

ATEX

Certificate for Equipment and Protective Systems intended for use in Potentially Explosive Atmosphere – Directive 2014/34/EU

CE Marking

CE DoC

Rheonics’ EU Declaration of Conformity according to directive 2014/34/EU (ATEX) and relevant standards for SRV, SRV-FPC, SRD & SRD-FPC

CONFIGURATIONS

Customise the sensor to meet your needs

Choose from a wide range of electronics, communication, temperature, accessories and process connection options. Define requirements as per your process needs and place an order.

DOWNLOADS
TitleSummaryLinkFile CategoryProductsTagsTypedocument_categories_hfiltertags_hfilter
Declaration of Conformity – Food Contact Compliance as per US FDA and EU Compliance for SRV & SRD

Rheonics’ Declaration of Conformity for Food Contact Compliance as per US FDA and EU Compliance for SRV & SRD

Download

, ,
Declaration of Conformity - Food Contact Compliance as per US FDA and EU Compliance for SRV & SRD
certificatesapplication technical-information
Declaration of Conformity – CE Declaration of Conformity as per EN 61326-1:2013, EN 61326-2-3:2013 & EN 50581:2012

Declaration of Conformity for SME-TRD, SME-TR & SME-DRM as per directives – Electromagnetic compatibility (EMC) Directive 2014/30/EU & Restriction of Hazardous Substances in Electrical and Electronic Equipment (RoHS2) Directive 2011/65/EU

Download

, , , ,
Declaration of Conformity - CE Declaration of Conformity as per EN 61326-1:2013, EN 61326-2-3:2013 & EN 50581:2012
certificatestechnical-information
Certificate – ATEX Quality Assurance Notification (QAN) – German

ATEX-QAN (Quality Assurance Notification) in German – Requirements according to directive 2014/34/EU have been fulfilled

Download

,
Certificate - ATEX Quality Assurance Notification (QAN) - German
certificatestechnical-information
Certificate – ATEX Quality Assurance Notification (QAN) – English

ATEX-QAN (Quality Assurance Notification) in English – Requirements according to directive 2014/34/EU have been fulfilled.

Download

,
Certificate - ATEX Quality Assurance Notification (QAN) - English
certificatestechnical-information
Declaration of Conformity – CE Declaration of Conformity according to directive 2014/34/EU (ATEX) for SRV & SRD

Rheonics’ EU Declaration of Conformity according to directive 2014/34/EU (ATEX) and relevant standards for SRV, SRV-FPC, SRD & SRD-FPC

Download

,
Declaration of Conformity - CE Declaration of Conformity according to directive 2014/34/EU (ATEX) for SRV & SRD
certificatestechnical-information
Certificate – ATEX Certificate for SRV & SRD

Certificate for Equipment and Protective Systems intended for use in Potentially Explosive Atmosphere – Directive 2014/34/EU

Download

,
Certificate - ATEX Certificate for SRV & SRD
certificatestechnical-information
Certificate – IECEx Certificate of Conformity for SRV & SRD

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standards listed in the certificate.

Download

,
Certificate - IECEx Certificate of Conformity for SRV & SRD
certificatestechnical-information
Article – Laboratory for Mechanics and Experimental Dynamics, ETH Zurich

ETH Zurich, Laboratory for Mechanics and Experimental Dynamics – Article on Dynamic viscosity and density sensing featuring Rheonics (previously Viscoteers)

Download

, , ,
Article - Laboratory for Mechanics and Experimental Dynamics, ETH Zurich
publicationstechnical-information
Manual – SRD

SRD Installation and Operating Instructions

Request File

Manual - SRD
manualstraining
Product Portfolio – SRV, SRD, DVM, DVP

Overview of the Standard Products – Information on Specifications, Electronics, Communication, Mechanical, Dimensions, Software and installation.

Download

, , , ,
Product Portfolio - SRV, SRD, DVM, DVP
datasheetstechnical-information marketing
Datasheet – SRD

Information on Specifications, Electronics, Communication, Mechanical, Dimensions, Software and installation.

Download

Datasheet - SRD
datasheetstechnical-information
APPLICATIONS
Real-time rheology measurements of polymer melts

Real-time rheology measurements of polymer melts

Polymers have gone from being cheap substitutes for natural products to providing high-quality options for a variety of industrial applications…

read more
Inline viscosity measurements in polymerisation reactions

Inline viscosity measurements in polymerisation reactions

Polymer production is one of the most important areas of applied chemistry due to its significant number of applications industry…

read more
Tablet coating process control

Tablet coating process control

Film coating of solid oral dosage forms is a well-established process in the pharmaceutical industry. Most tablets dosage forms undergo…

read more
Pharmaceutical printing process control

Pharmaceutical printing process control

Product marking has come under increased scrutiny in the pharmaceutical industry due to pressure from three factors: regulations, aesthetics, and…

read more
Mixing process management

Mixing process management

Mixing is the fundamental step in the manufacture of many products. Even though it may not have strict precision requirements,…

read more
Batter preparation and coating process control

Batter preparation and coating process control

Batters mixes are widely used as a coating for deep-fried foods and in many other products including cakes, waffles, doughnuts,…

read more
Optimising printing applications through inline process monitoring

Optimising printing applications through inline process monitoring

Printing presses have numerous applications – newspapers, magazines, catalogues, packaging and labels. The global printing industry is forecast to reach…

read more
Monitoring concrete mixing process

Monitoring concrete mixing process

Being one of the most versatile building materials, concrete is used in many forms of construction. Concrete is often used…

read more
Mud Weight Monitoring

Mud Weight Monitoring

As a part of the industry’s drive for continuous cost-effectiveness, drilling fluid performance and management have come under closer scrutiny.…

read more
Real-time engine oil condition monitoring

Real-time engine oil condition monitoring

One of the largest areas of innovation and R&D in the automobile industry is the engine oil condition monitoring. Rapid…

read more
Automotive painting and coating quality control and optimization

Automotive painting and coating quality control and optimization

Through all the advancement in automotive design and manufacturing over the years, there has been one constant – vehicle’s aesthetics…

read more
Battery production – Slurry Mixing and Coating

Battery production – Slurry Mixing and Coating

Lithium batteries keep both essentials and comfort of modern life running with safety and reliability. They have a long list…

read more
Interested in getting an SRD ?
Search