Skip to content
  • SUPPORT
  • QUOTE
  • REGISTER
  • LOG IN
Sable Systems International Logo
  • HOME
  • PRODUCTS
    • Overview
    • Promethion Core Line
    • Promethion Line
    • Classic Line
  • APPLICATIONS
    • Overview
    • Biomedical Research
    • Physiology
    • Environmental Research and Process Control
    • General Gas and Process Analysis
  • WHAT’S NEW
  • EDUCATION
    • Instructional Videos
    • Courses and Conferences
    • Frequently Asked Questions
    • Society Links
    • Founder’s Blog
    • Publications
  • COMPANY
    • About Us
    • Executive Team
    • History
    • News Releases
    • Careers
    • Warranty and Legal Information
    • Business Policies
  • CONTACT US

Products

Home/Products/Classic Line/RM-8 Respirometry Flow Multiplexer
RM-8 Respirometry Flow MultiplexerJeff Richardson2019-07-31T19:41:26-07:00
RM-8 Respirometry Flow Multiplexer

Request Product Quote

rm-8-new
RM-8 Respirometry Flow Multiplexer
product-classic-34
RM-8 Multiplexer back panel

Features

  • Selects from up to eight air streams for gas analysis
  • Multiplexes electrical signals
  • Perfect for multi-animal flow-through or stop-flow respirometry
  • Easy interface to almost any data acquisition system
  • Can be operated manually or in stand-alone program mode

Description

Automated gas sampling from multi-sample and multi-animal respirometry.

Running experiments in parallel rather than in series greatly increases throughput and makes better use of time and equipment. The RM-8 respirometer multiplexer allows you to select from any one of seven respirometer sample streams with full baselining available at any time on the eighth channel.

Each stream consists of a pair or precision, fast-operating electrical valves.  When activated, these valves connect the selected stream to a pair of common ports.  The RM-8 can switch between streams and baselines manually or automatically, between or during recordings with appropriate software, such as ExpeData. Manual channel selection, or user-programmed channel selection (up to 99 steps), or daisy-chainable serial (RS-232) channel selection can also be selected.  Multiple instruments can be merged to create almost any number of desired sample streams.

What happens to respirometer chambers that are not selected?  

The RM-8 allows respirometer chambers that are not selected to be flushed continuously with a user-provided airstream to prevent hypercapnic or hypoxic conditions from developing between readings. Alternatively, the FlowBar-8 mass flow generator can be used to control air-flow independently through all chambers at once, and the RM-8 can then be used to sub-sample the air emerging from each chamber, allowing very fast switching from chamber to chamber. The RM-8 can deliberately prevent any gas flow while the chamber is not selected, thus transforming itself into a stop-flow multiplexer. The stop-flow configuration prevents cross-contamination between samples.  

Optional Configurations 

NEW “Small volume” configuration includes 1/16” internal tubing to minimize dead space and maximize response times when low flow rates (<100ml/min) are desired or in some stop-flow configurations.

Optional MuxScan II – Electrical Multiplexer 

By using this adapter, you can quickly and easily connect up to 8 activity detectors or other transducers (range: 0 to 5V) to your RM-8, and the adapter will select the appropriate detector automatically when its corresponding solenoid valve is energized. All connections are made via research-grade BNC connectors, except for the connection to the multiplexer itself, which is accomplished via a DB-15 connector with attached cable (supplied). The multi-activity adapter also has provision for biasing resistive detectors such as thermistors, light dependent resistors (handy for activity detection at moderate light levels) and phototransistors using either visible light or invisible infrared illumination.

 

The RM-8 can be configured for flow-through or stop-flow respirometry as demonstrated in the following graphs. 

Example of Flow-through Multiplexing on n=4 laboratory mice (flow rates=2 LPM). Baselines are conducted every 2.5 minutes. Note that a dwell time of only 30 seconds is sufficient to determine metabolic rates.

 

Example of Stop-flow Multiplexing on n=8 chambers each containing n=10 Drosophila (Flow rates=100ml/min). Baselines are conducted every 10 minutes. Note that the integral of each peak is directly proportional to metabolic rates.

Contact Us

For a custom configuration, contact us and our specialists will help you configure the right system for your specific research needs.

Downloads

Brochure PDF

Request User Manual

Specifications

Show Specs

RM-8
Channels Eight; two valves per channel
Flow Rate Range 0 – 500 ml/min recommended; commonly used at 150 – 200 ml/min, push or pull mode
Operation Stop flow or flow-through compatible
Automation Can switch between inputs unattended, in any sequence, for selectable durations, in single-shot or looping mode
Operating Temperature 5 – 45˚ C, relative humidity non-condensing
Display Digital 2 x 16 alphanumeric LCD
Power Requirements 12 – 15VDC; universal adapter supplied
Response time < 50 milliseconds for complete valve changeover
Dimensions (W x D x H) 8 x 12 x 6 in. (20.3 x 30.5 x 15.2 cm)
Weight 8 lbs. (3.6 kg)
Technology Electrically activated three-way solenoid valves
Connections Nickel plated barb fittings for 1/8 in (3 mm) i.d. flexible or semi-rigid tubing
Optional MuxScan – Electrical Multiplexer
Analog Input Channels 8 BNC
Analog Input Range 0 – 5V
Analog Output Channels 1 BNC
Operating Temperature 5 – 45˚ C relative humidity non-condensing
Power Requirements 12 – 15 VDC; universal adapter supplied
Dimensions (W x D x H) 5 x 3 x 2 in. (12.7 x 7.6 x 5.1 cm)
Weight 1 lb (0.5 kg)

rm-8-new
RM-8 Respirometry Flow Multiplexer
mux-scan
rm-8-chart1
rm-8-chart2
mux-scan2

Classic Line

Menu   ≡ ╳
  • Classic Line Overview
  • Systems
    • Drosophila Metabolic Screening
    • MAVEn™ System for Small Insect Flow-Through Respirometry
    • Multiplexed System, Large Animal
  • Activity Detectors
    • AD-2 Small Animal Motion/Activity Detector
    • ADX-Classic Activity Detector
    • FLIC Fly Liquid-Food Interaction Counter
  • Data Acquisition & Analysis
    • Expedata Software
    • UI-3 Data Interface
  • Flow Meters and Controllers
    • Flowbar-8 Mass Flow Meter
    • FlowKit Mass Flow Generator
    • MFC-2 Mass Flow Controller
    • MFC-4 Mass Flow Controller
    • MFS Mass Flow System
    • PP-2 Dual Channel Field Pump
    • SS-4 Sub-Sampler Pump
  • Gas Analyzers
    • CA-10 Carbon Dioxide Analyzer
    • FC-10 Oxygen Analyzer
    • FC-2 Differential Oxygen Analyzer (Oxzilla)
    • MA-10 Methane Analyzer
    • PA-10 Paramagnetic Oxygen Analyzer
    • RH-300 Water Vapor Analyzer
  • Gas Controllers
    • ROXY-1 Single Channel Controller
    • ROXY-4 Four Channel Controller
  • Gas Flow Switchers
    • CBL-2 Baselining System
    • MUXSCAN Analog Signal Multiplexer
    • RM-8 Respirometry Flow Multiplexer
  • Humidity Measurement & Control
    • DG-4 Dewpoint Generator
  • Sample Dryers
    • ND-2 Gas Dryer
    • PC-4 Condensing Dryer
  • Temperature
    • Pelt-5 Temperature Controller
    • TC-2000 Type-T Thermocouple Meter

Sable Enables…

Confidence in Results – Sable Classic line instruments are used by researchers the world over. The superior performance of our products has been proven over and over again, as documented in many scientific publications.

Ease of Use – Classic instruments are designed for intuitive operation – whether they are operated locally using built-in controls, or remotely via Sable’s Expedata™ acquisition and control application.

Total Flexibility – These instruments can be used in stand-alone capacity, or configured as part of a fully dedicated system. You can easily change your configuration as needs evolve.

Quality and Standardization – High performance, intuitive operation and trusted methodologies provide a platform for consistency and standardization across your organization.

What’s New

  • Inside Scientific Webinar – Comfort Food: Effects of Stress and High-Fat Diets on Neuronal Activity and Mitochondrial Remodeling in Mice

    Inside Scientific Webinar – Comfort Food: Effects of Stress and High-Fat Diets on Neuronal Activity and Mitochondrial Remodeling in Mice

    February 5, 2021
  • Inside Scientific Webinar: Sex, Sugar, Fat, and Heat: Factors That Affect Energy Budgets, Weight Management and Behaviors in Mice

    Inside Scientific Webinar: Sex, Sugar, Fat, and Heat: Factors That Affect Energy Budgets, Weight Management and Behaviors in Mice

    October 24, 2020
  • Inside Scientific Webinar: From Pregnancy to Menopause – Studies of Physical Activity, Behavior, and Energy Balance in Mice

    Inside Scientific Webinar: From Pregnancy to Menopause – Studies of Physical Activity, Behavior, and Energy Balance in Mice

    October 5, 2020
  • Promethion® Isocage Negative Pressure Mouse Cage

    Promethion® Isocage Negative Pressure Mouse Cage

    September 11, 2020

UPCOMING EVENTS

Mar
9
Tue
1:00 pm Comfort Food: Effects of Stress ... @ Inside Scientific Webinar
Comfort Food: Effects of Stress ... @ Inside Scientific Webinar
Mar 9 @ 1:00 pm – 2:00 pm
 
View Calendar

UPCOMING CONFERENCES

There are no upcoming events.

View Calendar

By Scientists.
For Scientists.

We encourage you to discuss
your application with us.

+1 800 330 0465
+1 702 269 4445

+1 702 269 4446

Contact Directory
sales@sablesys.com
support@sablesys.com

Sable Systems International

3840 N. Commerce Street
North Las Vegas, NV 89032
USA
More Information

Sable Systems Europe

Contact international offices

PRIVACY POLICY
TERMS OF USE

© Copyright 2020 Sable Systems. All rights reserved.
twitterfacebookyoutubelinkedin