Angst+Pfister PFLOW1000V User manual

Insertion MEMS flow, temperature and humidity sensors
PFLOW1000V User Manual VB.0.1
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MEMS Flow, Temperature, and Humidity Sensors
with integrated MEMS sensing technology
PFLOW1000 Series
User Manual
Document No. 07-2021-FS9 EN
Issue date: 2021.07
Revision: VB.0.1
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Attention !
Use with caution !
•Please carefully read this manual prior to operating this product.
•Do not open or modify any hardware which may lead to irrecoverable
damage.
•Do not use this product if you suspect any malfunctions or defection.
•Do not use this product for corrosive media or in a strong vibration
environment.
•Use this product according to the specified parameters.
•Only the trained or qualified personnel shall be allowed to perform
product services.
•Be cautious for electrical safety, and even it operates at a low voltage,
any electrical shock might lead to some unexpected damages.
•The gas to be measured should be clean and free of particles, as
even light particles may be accumulated inside the tiny pressure port
that may result in inaccuracy in metrology, clogging, or other
irrecoverable damage.
•Do not apply for any unknown or non-specified gases that may
damage the product.
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Table of Contents
1. Overview ......................................................................................................................................................6
2. Receipt / unpack of the products ...............................................................................................................7
3. Knowing the products.................................................................................................................................8
3.1 Product description.............................................................................................................................8
3.2 Power and data pinout description ...................................................................................................8
3.3 Mechanical dimensions.......................................................................................................................9
4. Installation.......................................................................................................................................................9
5. Digital communication descriptions............................................................................................................12
5.1 I2C interface.............................................................................................................................................12
5.1.1 I2C interface connection diagram...................................................................................................12
5.1.2 I2C interface command description.................................................................................................12
5.1.3 I2C interface read/write sequences.................................................................................................13
5.2. RS485 Modbus communication protocol............................................................................................14
5.2.1. Communication parameters ..........................................................................................................14
5.2.2. Frame ...............................................................................................................................................14
5.2.3. Function codes.................................................................................................................................15
5.2.4. Registers ..........................................................................................................................................15
6. Product selection and order information....................................................................................................17
6.1. Product selection ...................................................................................................................................17
6.2. Order contact and customer support..................................................................................................17
7. Product performance ....................................................................................................................................18
7.1. Technical specifications.........................................................................................................................18
8. Technical notes for the product performance ............................................................................................19
8.1. Measurement principles ........................................................................................................................19
8.2. Precautions for the best performance of the product .......................................................................19
8.2.1. Altitude changes.............................................................................................................................19
8.2.2. Excessive humidity or condensation.............................................................................................19
8.2.3. Metrology verification ....................................................................................................................20
9. Warranty and Liability..................................................................................................................................21
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10. Service contact and information................................................................................................................23
Appendix I: Sensor evaluation kit....................................................................................................................24
Appendix II: Document history........................................................................................................................25
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1. Overview
All contact information can be found at the end of this manual.
This manual provides essential information for the PFLOW1000V series of integrated MEMS sensor
s of mass flow (flow speed), temperature, and humidity. It can be readily applied for environmenta
l monitoring as well as an insertion flow meter. The product performance, maintenance, an
d troubleshooting, as well as the information for product order, technical support, and repair, are als
o included.
The PFLOW1000V sensors are manufactured with the company’s proprietary MEMS (micro-el
ectro-mechanical systems) sensing technology and package technology that offers programmable f
low speed data with a dynamic range of 100:1, as well as the local temperature and humidity.
The RS485 (Modbus), I2C and Bluetooth LE (reserved) options are ready for networking or remote
communication. The formality is particularly in favor of residential HVAC smart home applications;
as well as the industrial process or environmental monitor such as in a cleanroom.
The product is fully customizable for the flow speed range and with another desirable user interface.
It can be further packaged into a complete meter with a local display or with standalone battery-
powered options
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2. Receipt / unpack of the products
Upon receipt of the products, please check the packing box before the dismantlement of the packing
materials. Ensure no damages during shipping. If any abnormality is observed, please contact and
notify the carrier who shipped the product and inform the distributors or sales representatives if the
order is not placed directly with the manufacturer; otherwise, the manufacturer should be informed.
For any further actions, please refer to the return and repair section in this manual.
If the packing box is intact, proceed to open the packing box, and you shall find the product (either
the sensor formality per the actual order), together with any accessories if ordered together.
Please check immediately for the integrity of the product and the accessories; if any abnormality is
identified, please notify the distributor/sales representative or manufacturer as soon as you can. If
any defects are confirmed, an exchange shall be arranged immediately via the original sales channel.
This user manual shall also be included in the packing box or via an online link for an electronic version
which should be sent by your sales agent. In most cases, this manual shall be made available to the
customer before the actual order.
Please note that the sensor has the standard 1.0 meter data and power cable directly attached to the
product, therefore no separate cable is needed for the operation. Please follow the instructions in
the subsequent section for the correct connections for the exact model you ordered.
PFLOW1000V or PFLOW1100V
Note: Evaluation kit or any other
accessories must be ordered
separately.
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3. Knowing the products
3.1Product description
3.2Power and data pinout description
Table 3.2: PFLOW1000V/1100 wire code assignment.
Note: The product offers two digital communications as options, I2C or RS85 Modbus Halfplex that can be
selected at the time of order. These two communication protocols share the ports as defined in
Table 3.2. For the detailed protocols of the corresponding option, please refer to Section 5.
WIRE COLOR
DEFINITION
Red
VCC, power supply, 8~24Vdc
Black
GND, ground
Yellow
SCL, I2C clock / RS485 A (+)
Blue
SDA, I2C data / RS485 B (-)
Green
Analog output, 0.5~4.5 Vdc
Data and power cable
(1.0m or 3 feet, default)
Probe with scale in
5.0mm
Sensor passage
Probe fixer or
installation guide
Note: Digital I2C and RS485 share the
ports, please specify the model at the
time of order.
Sealing gasket
Flow direction shown at
both the bottom and
top of the product
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3.3 Mechanical dimensions
Figure 3.3.1. PFLOW1000V/1100 mechanical dimensions.
4. Installation
Do not open or alter any part of the product, which would lead to malfunction and irrecoverable
damage.
Depending on the applications, the products can be used for open space environmental data
collection or as an insertion meter for inline gas flow measurement.
1. For the open space airspeed, temperature, and humidity measurement. Please notice that
the flow speed measurement is uni-direction, follow the arrow at the bottom of the probe to
properly install the probe per the application requirements. For the open space measurement
applications, no requirements for the probe positioning but the flow data are only relevant to
where the probe is placed and the data are directionally defined by the arrow direction.
2. For the inline flow measurement, the product will be used as an insertion meter. The
installation hole on the pipe where the product is to be inserted should be as close as possible
to the probe’s diameter, Φ12.5 mm. A flat plateau hard materials attached to the pipe should
be prepared to fix the probe to the pipe, refer to the following graphs. The fixtures should be
leakage-proof tested before the installation of the product. An illustration sketch is shown
below:
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Figure 4-1. Preparation for the insertion fixture.
Make sure there is no debris or excessive particles left in the pipe during the preparation of
the product fixtures on the pipe.
Refer to the graphs below, per OIML R137 recommendations, the upstream of the meter
should have a 20xDN straight pipe length, and downstream should have a 5xDN straight pipe
length.
Figure 4-2. Installation with correct upstream and downstream space.
Figure 4-3. Insertion probe length calculation.
!! Correct installation:
20xDN upstream and
5xDN downstream.
!! Incorrect installation:
insufficient straight pipe
length
L= 1/8D+H+B+23
where Dis the flow channel diameter
His the flow channel wall thickness
Bis the fixture base height.
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