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Summary of Contents for VPInstruments VPFlowScope In-line 3/8"
- Page 1 VPINSTRUMENTS.COM VPFlowScope In-line 3/8" User manual © 2021 VPInstruments MAN-VP-VP38-EN-2100 Date: 25-01-2021...
- Page 2 VPFlowScope In-line 3/8" © 2021 VPInstruments Al l ri ghts res erved. No pa rts of thi s document ma y be reproduced i n a ny form or by a ny mea ns - gra phi c, el ectroni c, or mecha ni ca l , i ncl udi ng photocopyi ng, recordi ng, ta pi ng, or i nforma ti on s tora ge a nd retri eva l s ys tems - wi thout the wri tten permi s s i on of the publ i s her.
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Page 3: Table Of Contents
Table of Contents 1 Warning - Read this first 2 Introduction 3 Product overview 4 Quick start 5 Measurement 1 Flow ........................... 7 2 Totalizer ........................... 7 6 Mechanical installation 1 Installation point ........................... 8 2 Piping table ........................... 8 7 Connectivity &... -
Page 4: Warning - Read This First
Feedback leads to product improvement. Please share your experience with us, as we are continuously improving our products in our commitment to quality, reliability and ease of use. Let us know via sales@vpinstruments.com! © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 5: Introduction
At the same time a report should be submitted to Van Putten Instruments BV, Buitenwatersloot 335, 2614 GS DELFT, The Netherlands. This manual is dedicated to: VPFlowScope In-line 3/8" flow meter © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 6: Product Overview
Optionally the displayed units can be changed. By default they are set to: Row 1: flow in ln/m Row 2: total flow in l Row 3: temperature in °C It is possible to switch between 1, 2 or 3 parameters. © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 7: Measurement
A power failure may result in maximum 15 minutes of totalizer data loss. The totalizer can only be reset to zero. It's not possible to set it to any arbitrary value. © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 8: Mechanical Installation
If possible, you can always choose a longer upstream length, as these are minimum values. The up- and downstream lengths are used industry wide as guidelines, but will never be a guarantee for obtaining the “true value”. © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... - Page 9 Diameter change from Flattened flow profile 10 * D 5 * D large to small (gradual change, between 7 and 15 degrees) 1 = inner diameter; 2 = minimum length © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021...
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Page 10: Connectivity & Communication
50, making 4 mA represent 0 ln/min and 20 mA represent 50 ln/min. Scaling is linear. Refer to the modbus table in chapter 8 Modbus for register indexes. © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 11: Pulse
When the analog output is in pulse mode, analog min holds the pulse interval, meaning value represented by a single pulse. Pulse output © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 12: Rs485
Used to enter the (sub)menu or to confirm a setting Escape Will return from a (sub)menu when not in the data acquisition screen Button up Navigate up in the menu Button down Navigate down in the menu © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 13: Modbus
Flow l /min Floating point Read 0074 - 0075 116 - 117 Flow l /sec Floating point Read 0076 - 0077 118 - 119 Flow SCFM Floating point Read © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... - Page 14 0136 - 0137 310 - 311 Analog low boundary ** Floating point Read / write 0138 - 0139 312 - 313 Analog high boundary ** Floating point Read / write © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021...
- Page 15 * Unix epoch time stamp ** Value will only change if both registers are written Available write operations Option Data Description 4..20 mA n/hr n/min mn/sec ln/min ln/sec SCFM © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021...
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Page 16: Electrical Connections
Ohm's law can be used to calculate the maximum distance. There are 2 parameters that needs to be taken into account. 1. The voltage available is equal to the input voltage 2. The resistance depends on cable quality and length © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... -
Page 17: Rs485
The cable length from the trunk line to the Modbus device needs to be as small as possible. Junction boxes are used to make the T junction. © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... - Page 18 (typically, 120 ohms for twisted pairs). There can only be one termination resistor at the very end of the trunk line. The VPInstruments junction box features a jumper that can be used to enable a 120 Ohm resistor. When using the VPInstruments Modbus Junction boxes make sure that the 120 Ohm resistor is only enabled in the last Modbus Junction box in the daisy chain.
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Page 19: Specifications
.. 24 VDC +10% CLASS 2 (UL) Power consumption 1 Watt (no flow) 3.5 Watt (full flow) +/- 10% Certification EN 60950-1, EN 61326-1, EN 61000-3-2, EN 61000-3-3, EN 61326- © 2021 VPInstruments | MAN-VP-VP38-EN | Revision: 2100 | Date: 25-01-2021... - Page 20 VPInstruments Buitenwatersloot 335 2614 GS Delft The Netherlands info@vpinstruments.com www.vpinstruments.com MAN-VP-VP38-EN-2100 Date: 25-01-2021...
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