Gemlog Controls Ltd.

 

Flow Monitoring
The Gemlog range of electronic flow metering and monitoring systems have been designed to measure and supervise the flow rate of gases, liquids and powders in pipelines (dependant on model).
Models operating on the calorimetric principle avoid the need for moving parts in the flow stream and are therefore especially suitable for use with liquids of high viscosity, or containing particles or contaminants. Alternatively high precision turbine sensors are available for applications which demand accurate volumetric measurement.
Calorimetric models comprise of a monitoring sensor head, installed in the pipeline, and an electronic controller which may be either integrated with the monitoring head or remotely sited, according to type. These systems provide an output to signal deviation of flow from a pre-set level. Temperature monitoring and continuous analogue output are additional functions which can be selected on some models.
The Gemlog flow meter/monitor programme offers a choice of specification, performance, size and cost to meet a wide variety of different uses and budget requirements.

FM1

 FM1 Micro controller operated Flow Meter to monitor and display flow rates and/or medium temperature. Suitable for use with calorimetric monitoring heads or mechanical monitoring heads with turbine-type sensors.

FM1 EX

CST Monitoring Head

 Features :
  • Menu driven (keypads)
  • LCD display (2 x 16 digits) of:
  • actual flow rate and/or medium temperature indication;
  • bargraph status indication of limit contacts, actual flow rate and/or medium temperature;
  • directions for parameter assignment, configuration, diagnosis and error correction;
  • base value indication
  • Two scaleable analogue outputs (current and voltage)
  • Base value memory (MIN + MAX)
  • Two freely selectable limit contacts
  • Expandable for field bus connections (as required)
  • Versions for rail or surface mounting

SWF209 Calorimetric Flow Monitor suitable for monitoring the flow of liquids and gases, with one switch point (either MIN or MAX). Designed for track mounting.

Features :

  • Adjustable to wide range of flow rates
  • No moving parts in the flow stream
  • Operation largely independent of pipe diameter
  • LED Status indication
  • Relay output for flow
  • Pressure resistant monitoring head
  • Fast response time
  • Wire break Sensing included
  • Suitable for liquids of all viscosity's
  • MIN or MAX switch point

SWF209

SW201

SW201 These Flow Monitors operate on the calorimetric principle and are suitable for liquids and gases . With one switch point (MIN or MAX function) and trend output. Temperature monitoring is optional.

Features :

  • Adjustable to wide range of flow rates
  • No moving parts in the flow stream
  • Operation largely independent of pipe diameter
  • LED Status indication
  • Relay output for flow
  • Pressure resistant monitoring head
  • Fast response time
  • Wire break sensing included
  • Suitable for liquids of all viscosities
  • Analogue output (non-linear)
  • Temperature monitoring optional
  • Choice of monitoring heads for various applications

SW118 & 119 Single point flow monitors with change over MIN or MAX monitoring function, suitable for water, oil, air, and media with similar thermal conductivity's (selectable by means of a medium switch), with either no delay, or with a 60Sec. switch-on delay or 10Sec. change over delay.

Features :

  • Adjustable to wide range of flow rates
  • No moving parts in the flow stream
  • Operation largely independent of pipe diameter
  • LED Status indication
  • Fast response time
  • MIN or MAX switch point
  • Suitable for all media (water, oil, and air)
  • Medium temperature range: SW118: -25...+70degC; SW119: -25...+100degC.

SW118 & 119

SW112

 SW112 Miniature Flow Monitor operates on the well proven calormetric principle and is designed to operate with air or inert gases. Self contained sensor head with integral electronic circitry.
  • Adjustable to wide range of flow rates
  • No moving parts in the flow stream
  • Operation largly independent of pipe diameter
  • LED Status indication
  • Relay output for flow
  • Fast response time
  • Suitable for air and inert gases
  • Mounting by Flange (part of product) or PGcable gland (accessory)

 

SFW120 Compact Flow Monitors that operate on the well proven calormetric principle and are suitable for water and liquids of simular viscosities.

BSFW 120 for marine engine applications, with a switching delay of 13 sec (MAX function)

SFW 120 for industrial applications, with a switching delay of 3 sec (MIN function)

  • Adjustable to a wide range of flow rates
  • No moving parts in the flow stream
  • Operation largely independent of pipe diameter
  • LED Status indication
  • Trasistor output for flow signalling
  • Pressure resistant monitoring head

SFW120

SFW120E

SFW120E These flow Monitors operate on the well proven calormetric principle and are suitable for small pipe sizes with flow rates as low as 0.1 to 1o l/min for liquids and 2.5 to 250 l/min for gases. Self contained sensor head with integral electronic circuitru in Ermeto housing sealed to IP65.

  • Adjustable to a wide range of flow rates
  • No moving parts in the flow stream
  • LED Status indication
  • Relay output for flow
  • Suitable for very small pipe diameters
  • Fast response times
  • Suitable for liquids and gases
  • MIN or MAX switch point

 

The IR-Opflow sensor is a volumetric flowmeter. The sensor consists of the following components:
  • a sensor housing which contains:
  • a patented flow corrector with screw-shaped interior (1),
  • a lightweight rotor with three blades (2),

  • and an optoelectronic infrared detector (3) with integrated pre-amplifier

The incoming liquid is forced into a twisting motion by the spiraling surfaces of the flow corrector section. The flow of liquid causes the rotor to rotate virtually free of frictional resistance. This provides a large measurement range and causes a minimum of wear.Each time they rotate, the blades of the rotor interrupt the beam of infrared light.This generates a series of pulses with which the flow can be measured extremely accurately.As an example, the smallest IR-Opflow flowmeter generates 36,000 pulses per 1,000 cc.The built-in signal amplifier provides a square wave pulse output.

The IR-Opflow Sensor is also available without a signal amplifier. The flowmeter in this version has a sinusoidal output signal. The patented turbine design prevents air or gas bubbles from becoming trapped in the measuring chamber. This is essential to the IR-Opflow Flowmeter's exceptional accuracy. The precision of the IR-Opflow within the measuring range is not influenced by either pressure differences or varying or pulsating liquid flows.