The patented VPFlowScope DP is the only insertion-style flow meter built for supply-side measurements in 100% saturated compressed air conditions. A 4-in-1 differential pressure sensor measuring bi-directional flow, pressure, temperature, and total flow simultaneously — installable under pressure without shutting down your compressor.
The patented VPFlowScope® DP is the ultimate measurement tool for saturated compressed air flow measurements. This differential pressure flow sensor measures bi-directional flow, pressure, temperature and total flow simultaneously. Its unique design enables you to take measurements in the discharge pipe of any compressor under 100% saturated conditions. With the VPFlowScope DP you can measure the performance or efficiency of your compressor. Furthermore, you can measure compressor contribution of the total compressed air supply.
The VPFlowScope DP is an insertion type flow meter, so you can use one device for various pipe diameters. The bright blue LCD display provides real-time information and with the built-in data logger, you can record for certain periods of time. Combine this with our VPStudio software on your PC and you can use this information to process data, print reports and analyze where and how exactly you can save.
Insertion type flow meter can be installed under pressure
Your compressed air supply is often vital for your 24/7 production process. You can install the VPFlowScope DP under pressurized conditions without stopping your compressor.
Bi-directional flow measurement
Bi-directional flow occurs frequently in compressed air systems, examples are in ring networks, at receivers in case of multiple compressed rooms, overseen branches or a leaking non-return valve. Discover the actual consumption and avoid mis-readings with the built-in bi-directional sensitivity.
Power of combined measurement
Get the complete picture by measuring flow, pressure and temperature simultaneously. Examples are: pressure drop caused by excessive flow, flow & temperature measurement combined downstream of a refrigerant dryer, and to get to know the true delivery of your compressors.
Proprietary safety cable
We value your safety while you install your flow meter under pressurized conditions. The safety cable prevents unintended launching of the flow meter. As an extra benefit, the flow meter remains better in its position over time.
Differential pressure vs. thermal mass
The range of thermal mass flow technology is superior to differential pressure technology. Therefore, differential pressure meters should not be used for leakage monitoring. They are intended for use in high velocity applications where there is a continuous flow over a minimum value, such as compressor efficiency monitoring.
Display module
The VPFlowScope DP is available in several versions: without display (with connector cap) (D2), with display module (D10), and with display module and integrated data logger (D11).
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.
Highlights
- For saturated compressed air measurements, can handle droplets of condensate
- 4-in-1 sensor: Bi-directional flow, pressure, temperature and total flow
- Differential pressure flow measurement
- Standard RS485 (Modbus RTU), 4..20mA and pulse output
- 3-line display (optional) with real-time information and configuration keys
- Built-in data logger with 2 million points (optional)
- 1 Year Warranty
Technical Specifications
Parameter |
Specification |
FLOW SENSOR |
|
Measuring Principle |
Differential Pressure |
Flow Range |
20 – 200 mn/sec / 65 – 650 sfps |
Bi-directional |
Standard |
Accuracy |
2% of reading over 1:10 range (under calibration conditions) |
Min. Recommended Pipe |
50mm (2") and up |
Reference Conditions |
0°C, 1013.25 mbar / 32°F, 14.65 psi (DIN 1343) |
Gases |
Wet and dry compressed air, nitrogen and inert gases |
PRESSURE SENSOR |
|
Range |
0 – 16 bar / 0 – 250 psi gauge |
Accuracy |
±1.5% FSS (0 – 60°C / 32 – 140°F), temperature compensated |
TEMPERATURE SENSOR |
|
Range |
-40 – 150°C / -40 – 302°F (icing should be avoided) |
Accuracy |
±1°C / ±1.8°F |
DATA OUTPUTS |
|
Digital |
RS485, Modbus RTU |
Analog |
4 – 20 mA single analog / pulse output, selectable via VPStudio |
DISPLAY / DATA LOGGER |
|
Technology |
LCD |
Backlight |
Blue, auto power save |
Data Logger |
2 million points |
MECHANICAL & ENVIRONMENTAL |
|
Probe Length |
386mm / 15" (fixed — no custom lengths) |
Process Connection |
Compression fitting, 0.5" NPT thread |
Pressure Rating |
PN16 |
IP Rating |
IP52 / NEMA 12 (with display module) — IP63 / NEMA 4 (with connector cap) |
Ambient Temperature |
0 – 60°C / 32 – 140°F. Avoid direct sunlight or radiant heat |
Wetted Materials |
Anodized aluminum, stainless steel 316, glass and epoxy |
ELECTRICAL |
|
Connection |
M12, 5-pin connector (female) |
Power Supply |
12 – 24 VDC ±10%, Class 2 (UL) |
Power Consumption |
3.6W ±10% — 150mA ±10% @ 24VDC (constant across entire flow range) |
Certifications |
UL/CUL 14 AZ Industrial Control Equipment, CE EN61325-1(2006) Class A, EN61000-6-1(2007) |
FLOW RANGE TABLE — Schedule 40 Standard Seamless Carbon Steel Pipe
Size (in) |
DN |
ID (in) |
ID (mm) |
Min (SCFM) |
Max (SCFM) |
Min (m³n/hr) |
Max (m³n/hr) |
2 |
50 |
2.1 |
52.5 |
92 |
917 |
156 |
1,559 |
3 |
80 |
3.1 |
77.9 |
202 |
2,020 |
343 |
3,432 |
4 |
100 |
4.0 |
102.3 |
348 |
3,483 |
592 |
5,918 |
6 |
150 |
6.1 |
154.1 |
790 |
7,904 |
1,343 |
13,429 |
8 |
200 |
8.0 |
202.7 |
1,368 |
13,675 |
2,323 |
23,234 |
10 |
250 |
10.2 |
259.1 |
2,234 |
22,344 |
3,796 |
37,963 |
12 |
300 |
11.9 |
303.2 |
3,060 |
30,597 |
5,199 |
51,985 |
16 |
400 |
15.0 |
381.0 |
4,831 |
48,314 |
8,209 |
82,087 |
20 |
500 |
18.8 |
477.8 |
7,598 |
75,983 |
12,910 |
129,097 |
Flow Range Table — Schedule 10 Standard Seamless Carbon Steel Pipe
ID (in) |
ID (mm) |
Min (SCFM) |
Max (SCFM) |
Min (m³n/hr) |
Max (m³n/hr) |
2.2 |
54.8 |
100 |
1,000 |
170 |
1,698 |
3.3 |
82.8 |
228 |
2,282 |
388 |
3,877 |
4.3 |
108.2 |
390 |
3,897 |
662 |
6,620 |
6.4 |
161.5 |
868 |
8,681 |
1,475 |
14,749 |
8.3 |
211.6 |
1,490 |
14,902 |
2,532 |
25,319 |
10.4 |
264.7 |
2,332 |
23,320 |
3,962 |
39,621 |
12.4 |
314.7 |
3,296 |
32,962 |
5,600 |
56,004 |
15.6 |
396.8 |
5,240 |
52,405 |
8,904 |
89,036 |
19.6 |
496.9 |
8,218 |
82,180 |
13,962 |
139,624 |
Ranges apply to compressed air and nitrogen only. Field accuracy typically ±5% due to installation conditions. Not for use in official compressor testing.
Ordering Information
Order Code |
Description |
VPS.R200.P4DP.KIT |
VPFlowScope DP start kit in explorer case |
VPS.R200.P4DP.BOX |
VPFlowScope DP start kit, items only, no carry case |
VPS.R200.P4DP.VPT.KIT |
VPFlowScope DP start kit with VPFlowTerminal |
VPS.R200.P4DP.D0 |
VPFlowScope DP sensor module (spare part) |
VPS.R200.P4DP.D2 |
VPFlowScope DP with connector cap |
VPS.R200.P4DP.D10 |
VPFlowScope DP with display, no datalogger |
VPS.R200.P4DP.D11 |
VPFlowScope DP with display and datalogger |
All models include calibration report and compression fitting with safety cable.
ACCESSORIES
Order Code |
Description |
VPS.D110.000 |
VPFlowScope display module with datalogger |
VPS.D100.000 |
VPFlowScope display module, no datalogger |
VPA.5001.900 |
VPFlowScope connector cap |
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 — interface box, 5m cable, 12V PSU, RS485-USB cable |
VPA.0000.200 |
Power supply adapter with 5-pin connector — for air audits |
VPA.5100.004 |
Set of 10 filters and 10 O-rings — spare part for maintenance |
"The VPFlowScope DP is super easy to install and allows me to show customers just how important measuring flow really is.”
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