A 4-in-1 thermal mass flow sensor measuring compressed air flow, pressure, temperature, and total consumption simultaneously — in ½", 1", and 2" line sizes. Ideal for point-of-use submetering, leak detection, and energy auditing in industrial instrument air systems.
The VPFlowScope® In-line is the ideal flow meter for point-of-use consumption measurements of compressed air and other industrial gases, including nitrogen, oxygen, CO2, helium, and argon. This thermal mass flow sensor measures bi-directional flow, pressure, temperature, and totalflow simultaneously.
The VPFlowScope In-line is perfect for smaller diameters where it provides all the data you need to optimize your compressed air consumption. You can choose between a 16 bar and 35 bar version. The basic model comes without display. The most advanced model has a built-in display with an integrated two-million-point data logger. Due to the range of versions, there is a model of the VPFlowScope In-line for all your applications; from stand alone to integration into an energy management system like VPVision.
Power of combined measurement
Get the complete picture by measuring flow, pressure, and temperature simultaneously. Examples are: The pressure drop caused by excessive flow and an investigation to determine if a machine can use less air at a lower pressure.
Bi-directional flow measurement
Bi-directional flow occurs frequently in compressed air systems. Examples are in ring networks, overseen branches or a leaking non-return valve. Discover the actual consumption and avoid mis-readings with VPFlowScope bi-directional flow measurement option.
Display options
The VPFlowScope In-line comes in three sizes; 0.5 inch (VPS.R080.M050), 1 inch (VPS.R250. M100), and 2 inch (VPS.R01K.M200). In these three sizes, you can choose three display options. The display provides real-time information that can be recorded with the optional data logger. The display is reversible and shows all information on three lines, which are fully configurable. You can choose from SI and Imperial display units. The data logger offers 2 million data points, which makes recording as easy as taking pictures. This is enough storage to measure flow, pressure and temperature once per second for more than a week.
Point of use measurement
The VPFlowScope In-line flow meter is available for flows up to 1000 m3/hr (600 SCFM) and thereby it is the perfect tool to measure the consumption of your machines. Allocate costs or improve your production process, as you can determine per machine and per product type its consumption.
Ease of connection
The VPFlowScope features an RS485 (Modbus RTU) interface, which is especially useful in energy monitoring applications, like VPVision. You can connect up to eight VPFlowScope flow meters in one daisy chain. It is recommended to use a junction box for each flow meter to ease proper connection to the Modbus network. The junction box has biasing, termination resistors and provides feedback by LED on the power supply.
However, if you would like to connect your flow meter to an existing Modbus network or 4..20 mA / pulse based data acquisition system, you can use the power supply module to supply DC power to the flow meter. The power supply module can supply power to two flow meters at the same time. You will find screw terminals in the power supply module for both RS485 and the 4..20 mA / pulse output at your convenience. If you require more installation examples, please refer to the user manual.
Highlights
- 4-in-1 sensor: flow, pressure, temperature, and total flow
- Bi-directional flow measurement (optional)
- Patented Thermabridge™ technology for dry, clean gas measurements
- Standard RS485 (Modbus RTU), 4..20mA and pulse output
- 3-line LCD display (optional) with real-time information and configuration keys
- Built-in data logger with 2 million points(optional)
- Reversible display text
- 1 Year Warranty
Technical Specifications
Parameter |
Specification |
FLOW SENSOR |
|
Measuring Principle |
Thermabridge™ Thermal Mass Flow Sensor |
Flow Range 0.5" |
0.23 – 80 m³n/hr / 0.13 – 50 SCFM |
Flow Range 1" |
0.91 – 250 m³n/hr / 0.54 – 150 SCFM |
Flow Range 2" |
3.55 – 1000 m³n/hr / 2.15 – 600 SCFM |
Accuracy |
0.5% FSS with calibration report (under calibration conditions with air) |
Reference Conditions |
0°C, 1013.25 mbar / 32°F, 14.695 psi |
Gases |
Compressed air, nitrogen, oxygen and inert, non-condensing gases, 95% non-condensing |
Gas Temperature Range |
0 – 60°C / 32 – 140°F |
PRESSURE SENSOR |
|
Range |
0 – 16 bar / 0 – 250 psi gauge (35 bar / 500 psi on request) |
Accuracy |
±1.5% FSS (0 – 60°C / 32 – 140°F) |
TEMPERATURE SENSOR |
|
Range |
0 – 60°C / 32 – 140°F |
Accuracy |
>10 mn/sec: ±1°C / ±1.8°F — <10 mn/sec: +5°C / +9°F (due to sensor self-heating) |
DATA OUTPUTS |
|
Analog |
4 – 20 mA or Pulse, selectable via software |
Serial I/O |
RS485 (Modbus RTU) |
USB |
Mini USB (display version only) |
DISPLAY / DATA LOGGER |
|
Technology |
LCD |
Backlight |
Blue, with auto power save |
Data Logger (option) |
2 million points |
DIMENSIONS & WEIGHT |
|
0.5" |
135 × 50 × 85 mm / 5.31" × 1.97" × 3.35" — 0.7 kg / 1.54 lbs |
1" |
135 × 55 × 91 mm / 5.31" × 1.97" × 3.58" — 0.7 kg / 1.54 lbs |
2" |
155 × 90 × 125 mm / 6.10" × 3.54" × 4.92" — 1.6 kg / 3.58 lbs |
MECHANICAL & ENVIRONMENTAL |
|
IP Rating |
IP65 (when mated to connector, at room temperature) |
Ambient Temperature |
0 – 60°C / 32 – 140°F |
Wetted Materials |
Body: Anodized aluminum / Sensor: Silicon, epoxy, glass / Sealing: FTM 60, Polyurethane |
ELECTRICAL |
|
Connection |
M12, 5-pin connector (female) + optional Mini USB |
Power Supply |
12 – 24 VDC ±10%, Class 2 (UL) |
Power Consumption |
2.4W (no flow) / 4.8W (full flow) — 100 mA / 200 mA @ 24 VDC |
Certifications |
UL/CUL 14 AZ Industrial Control Equipment, CE EN61326-1(2006) Class A, EN61000-6-1(2007) |
Ordering Information
Order Code Description
VPS.R080.M050.D0 VPFlowScope In-Line 0.5" — no display, no datalogger
VPS.R080.M050.D10 VPFlowScope In-Line 0.5" — with display, no datalogger
VPS.R080.M050.D11 VPFlowScope In-Line 0.5" — with display and datalogger
VPS.R250.M100.D0 VPFlowScope In-Line 1" — no display, no datalogger
VPS.R250.M100.D10 VPFlowScope In-Line 1" — with display, no datalogger
VPS.R250.M100.D11 VPFlowScope In-Line 1" — with display and datalogger
VPS.R01K.M200.D0 VPFlowScope In-Line 2" — no display, no datalogger
VPS.R01K.M200.D10 VPFlowScope In-Line 2" — with display, no datalogger
VPS.R01K.M200.D11 VPFlowScope In-Line 2" — with display and datalogger
OPTIONS
Order Code Description
VPA.5000.912 Bi-directional flow option
VPA.0001.093 Pressure upgrade to 35 bar / 500 psi
VPA.0001.912* Helium gas calibration — includes calibration certificate
VPA.0001.915* Special gas calibration (other gases) — includes calibration certificate
*Quantity discount available for multiple units in same order.
ACCESSORIES
Order Code Description
VPA.1200.005 0.5" tubing kit BSP — in & outlet tubes
VPA.1200.010 1" tubing kit BSP — in & outlet tubes
VPA.1200.020 2" tubing kit BSP — in & outlet tubes
VPA.1200.105 0.5" tubing kit NPT — in & outlet tubes
VPA.1200.110 1" tubing kit NPT — in & outlet tubes
VPA.1200.120 2" tubing kit NPT — in & outlet tubes
VPA.5000.005 Cable 5m / 16.4ft — M12 5-pin, permanent install
VPA.5000.010 Cable 10m / 32.8ft — M12 5-pin, permanent install
VPA.5001.205 JB5 Interface Kit (for D0 no-display models) — includes interface box, 5m cable, 12V PSU, RS485-USB cable
VPA.0000.200 Power supply adapter with 5-pin connector — for air audits
"With the VPFlowScope In-Line we tested the best solution for our air knives and nozzles. We identified annual cost savings of $10K CAD with engineered venturi nozzles compared to our old open blow pipes. The ROI on the venturi nozzles was a couple of months."
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