PLATON Glass- & Plastic Tube Flow meters
May the flow be with you...
PLATON Glass Variable Area Flowmeters:
A complete VA flowmeter consists of a glass flow tube and float scaled to the flow units required, and a frame to provide the end block supports and to cover and protect the tube. The NGX series frames use flow tubes with nominally 100mm long scales, whereas the smaller LGX frames use flow tubes with nominally 30mm scales.
To choose a complete flowmeter select the frame code required, and separately specify the fluid flow range needed on the flow tube scale. NGX and LGX series frames are designed to fit your process. The options available allow easy installation, usually surface
mounted on a vertical panel. Process connections and labelling can be customized to suit the application.
Applications:
Industrial process control, laboratory and research, food and beverage industry, automotive, pharmaceutical manufacturing any many more…
- Improved industrialized construction
- Easy to use, high visibility scale
- Rear ‘blow out’ safety vent
- Ergonomic design and many more
- Gas or liquid flow measurement
- Air flow range 5 mL/min to 150 L/min
- Accuracy up to ±1.25% FSD
- Customized scales and many more
Operation & Maintenance Manual:
Platon Safety Housed GU VA Flowmeter:
Gapmeters type GU are glass tube Variable Area Flowmeters for direct display of liquid or gas flowrate. The GU housing provides a robust rigid frame, suitable for mounting directly into plant pipework, protecting the glass tube from pipework stress and random plant damage.
The safety Perspex window gives good flow visibility, while protecting the operator. A safety blowout disc on the rear of the housing provides a relief vent for process fluids, in case of glass tube damage.
Glass tube VA flowmeters are simple and reliable in operation, and instantaneous in response – they offer flow visualization to the operator, and the float rotation gives confirmation of correct meter performance. Standard tubes and floats offer low line pressure loss and a high resolution 100mm linear scale, fused into the glass tube. Fluid flow vertically upward through the tapered glass tube causes the float to rise to an equilibrium position. Flow rate is measured on the scale of the flow tube, along the top edge of the float.
The borosilicate glass tubes are individually scaled according to customers requirements, and individually flow calibrated.
- Robust construction
- Instant flow rate visual indication
- Suitable for installation in unsupported pipework
- Flow tube scaled for any gas and most liquids
- Safety housed for operator protection
- Site interchangeable 140mm flowtubes
Datasheet:
Operation & Maintenance Manual:
Platon Plastic Tube VA Flow Meter(PG & PGU):
Gapmeters type PG and PGU are low cost direct reading variable area flowmeters for liquids or gases, in pipe sizes 1/2” or 1”.The shatterproof TPX moulded tapered indicator tube has a 100mm linear flow scale with a 10:1 flow range. The stain-less steel or Dural float rises with the flow to an equilibrium position -flow rate is read from the top of the float. Standard air and water scales are etched directly onto the plastic flow tube high float visibility, easily read at a distance.
Type PG is a lightweight, open construction ideal for surface mounting or portable use. For alternative process liquids or conditions, external laminated scales are provided positioned in front of the flow tube. Type PGU has a rigid 316 brushed stainless steel housing with a Polycarbonate window, giving complete protection from random damage: this flowmeter is suitable for unsupported mounting in process pipework. TPX plastic tubes are available with air or water scales etched into the flow tube. Glass tubes are also available, which can be supplied with custom scales to suit process conditions, in the PGU housing.
- Large flow capacity for use on 1/2” and 1” lines
- High visibility
- Instantaneous in operation
- Suitable for use on a wide range of liquids and gases
- Glass tube or special scale options
- Low pressure drop
Datasheet:
Operation & Maintenance Manual:
Platon GR/GRV Plastic VA Flow Meter:
The Platon GR/GRV flowmeters are moulded plastic tube variable area meters with ball floats. The precision molded tapered tube has guides to stabilise the float, allowing easy flow reading against the clear 50mm long scale. Units are available calibrated for air or water flows.
Typical applications are for operator monitoring of cooling, purging or sample flows. For simple adjustment of flow rates, the GRV option has a built in multi-turn flow control valve. Designed for vertical mounting on a control panel, the flowmeter is supplied with brackets for flush mounting through a cutout approximately 116 x 19mm. Alternatively the meter can be surface mounted.
- Low cost flow indication
- Air or water calibration
- Easily readable 50mm scale
- Stainless steel rear connections
- Set point indicator flag
- Flow control valve option
Datasheet:
Operation & Maintenance Manual:
Platon Infra-Red Flow Alarm For Glass Vas:
Platon Floscan sensors use an infra-red beam across the glass flowtube of a Variable Area (VA) flowmeter. Passage of the float between the sensor arms is detected, and logic within the electronics determines whether the float is above or below the sensor position. Electronics inside the sensor module gives an open drain transistor output, suitable for external logic circuits.
Suitable for all gas flows, and liquid flows where the float is visible, the sensor is clipped to the back of the flowmeter frame, typically on a Platon NG/NGX Series (normal 100mm scale) or LG/LGX series (miniature 30mm scale) VA meter.
- Detects rise or drop of a specified level of flow
- Self-calibrates sensitivity to accommodate various tube transparency
- Detects conditions that may adversely affect reliability
- Status indicator
- Adjustable over full range of flow tube
- Suitable for normal (NG/NGX) or miniature (LG/LGX) flowmeters
- Open drain output that can drive standard logic circuits
- Optional mains interface relay module
Datasheet:
Operation & Maintenance Manual:
Platon Mains Interface Relay Module:
The Floscan Mains Interface Relay Module is a DIN rail/surface mounted unit that provides DC power for one or two GIR (Floscan) Infra-red flow alarm sensors, from any mains power source. Each sensor output drives a relay in the module, al-lowing external signalling via the 8 Amp voltage free relay contacts. The two Floscan sensors can be high or low flow alarms (dictated by the sensor orientation) and can be on the same flowmeter tube, or on separate flowmeters. Relay status as well as set-up status are displayed by LED indicators.
The module can also be used to power and monitor alarm outputs from the GMTXD Transmitter.
- Two Channels
- Alarm Indicators
- "Set-up pending" indicators
- Mains AC or DC power
- SPCO relay output
- DIN rail mountable
Datasheet:
Operation & Maintenance Manual:
Platon All Plastic DFM VA Flow Meter:
All Plastic construction variable area flowmeters providing excellent chemical resistance and readability, supplied complete with end connections, either for solvent welding to PVC pipe or threaded. Up to three bi-stable alarms can be fitted to each unit or if required, a 4-20 mA transmitter is available.
- 3-50,000 L/h liquid in 13 ranges each with 10:1 operating span
- 6 different overall lengths from 165-350mm
- Choice of tube materials depending upon operating temperature and pressure up to 100˚C and 10 Bar
- Positive pipe O-ring sealing requiring less tightening effort when installing
Datasheet:
Operation & Maintenance Manual:
- Not Available
Platon FCV – Fine Control Valve:
A selection of fine control needle valves suitable for gradual opening and closing of gas or liquid flows. Suitable for use with all Platon glass Tube VA flowmeters, the standard FCV is rated at up to 25 bar line pressure. As with all control valves the FCV is not designed for total leak free shut off.
- 1/4" BSPP Connection fits directly into pipework
- Fits in any orientation
- Choice of low, medium or high flow control
- Ideal for use with NGXI, LGXI and GU flowmeters
- Brass or Stainless Steel Options
Datasheet:
Operation & Maintenance Manual:
- Not Available
Spare Parts / Accessories:
A full range of accessories are available for GU, NGX/LGX, PG/PGU glass tube flowmeters
Please look through the range of accessories available to purchase below. If you cannot find what you are looking for, please contact one of our technical sales team who will happily assist you with your enquiry.
- Mount stands
- Adaptors
- Sealings
- Panel mount bezels
- Tubes
- Inserts
Datasheet:
Operation & Maintenance Manual:
- Not Available
Scale Glass Tubes & Float For Gas & Water, 30/100mm:
The LG/LGX range of Glass Tube Flowmeters typically use the 30mm scale length borosilicate glass tube and a float. Based on the well known variable area (VA) principle of low measurement, these flowmeters provide clear, simple and reliable operation.
Platon Glass Tubes are individually scaled and calibrated according to customer’s requirements. Custom scales are produced using our “Reynolds Curve” prediction software, which uses air or water calibration data corrected for the effects of temperature and pressure on the density and viscosity of the working fluid.
- Instantaneous response
- Simple and reliable operation
- Low line pressure loss
- High resolution
- Custom scales available on request
Operation & Maintenance Manual:
- Not Available
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