Wiseair WAFS-104 User manual

User Manual
2021 Release 2
WiseAir Technologies India LLP
[e-mail] [phone]
WAFS 104
THERMAL FLOW SENSOR
Page 1 of 24
MEASURE TO MANAGE
User
Manual for
Thermal
Mass
Flow Sensor
WAFS - 104

User Manual
2021 Release 2
WiseAir Technologies India LLP
[e-mail] [phone]
Page 2 of 24
MEASURE TO MANAGE
TABLE CONTENTS
Section Contents Page No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
General Information
About WAFS-104 Thermal Mass Flow Sensor
What's in the Box?
Product Specifications
Installation - Mechanical
Installation - Electrical (Wiring)
Configuring Settings
System Settings
Communication Settings
Warranty
Calibration
Need Help
Technical Support
Commissioning Report
3
4
6
7
8
16
17
18
18
19
19
19
20
23
WAFS 104
THERMAL FLOW SENSOR

User Manual
2021 Release 2
WiseAir Technologies India LLP
[e-mail] [phone]
Page 3 of 24
MEASURE TO MANAGE
Section 1 : General Information :
1.1 Please read this user manual in full and carefully observe the notes and
instructions before and during installation, operation and maintenance. The manufacturer
cannot be held liable for any damage which occurs as a result of non-observance or
noncompliance with this user manual.
Should the device be tampered with in any manner other than a procedure which is
described and specified in this manual, the warranty is cancelled and the manufacturer is
exempt from liability. The device is designed exclusively for the described application.
This user manual should be read carefully by the technician / qualified personnel and
the end user. Once you install, use or maintain this product, you accept that you have read,
understood and complied with this manual. This manual should be kept with the Flow Meter and
made available to relevant personnel as needed. WiseAir Endeavours to make changes to the
content of this Manual, and tries to ensure Correctness and well stated, but is not responsible for
Omissions or errors and the consequences caused thereby.
1.2 Compressed Air Safety
Any contact with quickly escaping air or bursting parts of the compressed air system
can lead to serious injuries or even death.
Do not exceed the maximum permitted pressure
Only use pressure tight installation material.
Avoid getting hit by escaping air or bursting parts.
The system must be pressure-less during maintenance work.
1.3 Electrical Safety
Any contact with energised parts of the product, may lead to an electrical shock which
can lead to serious injuries or even death.Consider all regulations for electrical installations.
The system must be disconnected from any power supply during maintenance work.
Any electrical work on the system is only allowed by authorised qualified personal.
1.4 Installing the Flow Meter, Calibration & Maintenance
The product must be installed properly and frequently calibrated, otherwise it may
lead to the wrong measurement values, which can lead to wrong results.
Always Observe the Direction of Flow When installing the Sensor. The
Direction is Indicated on the Housing.
Do Not Exceed the Maximum Operation Temperature at the Sensors Tip.
Avoid Condensation on the Sensor Element as this will affect the accuracy
enormously.
Please observe national regulations before/during installation and
operation.
Do not disassemble the product.
Always use a spanner to mount the product properly
WAFS 104
THERMAL FLOW SENSOR

User Manual
2021 Release 2
WiseAir Technologies India LLP
[e-mail] [phone]
Page 4 of 24
MEASURE TO MANAGE
1.5 Using the Flow Meter
Do not use this product in explosive areas.
Do not exceed the permitted operating parameters. Any operation exceeding
these parameters can lead to malfunctions and may lead to damage on the
instrument or the system.
Do not exceed or go below the permitted storage and operation temperature
and pressure.
This product should be maintained and calibrated frequently, at least every
2 years.
1.6 Storage and transportation
Make sure that the transportation temperature of the sensor is between
-10°C to 60 °C.
Storage temperature of the sensor is between -10 °C to 50 °C and the
humidity is <90%, no condensation.
Avoid direct UV and solar radiation during storage.
Section 2 : About WAFS -104 THERMAL MASS FLOW SENSOR
2.1 Importance of Flow Meters:
Flow meters are very popular for measuring compressed air systems. Depending on
where they are installed, flow meters can tell you the compressor output, system consumption,
peaks and troughs as well as average usage. When used well, flow monitoring can help keep
your system under control and highlight any unusual activity in your system.
2.2 Benefits of Monitoring Flow Include:
Improves system efficiency
Reduces system maintenance
Reduces operating and energy costs
Increases system understanding and operation
Identifies changes in system performance
Identifies non-productive air demand and leakage
Identifies peak and average demand
Different types of flow meters should be used depending on the specific location and
purpose. However, when it comes to compressed air, flow meters such as vortex or orifice plates
can create a pressure drop within the system, ultimately leading to increased operating cost of
the entire plant. As such, vortex or orifice plate flow meters are not recommended for
compressed air.
WAFS 104
THERMAL FLOW SENSOR

User Manual
2021 Release 2
WiseAir Technologies India LLP
[e-mail] [phone]
Page 5 of 24
MEASURE TO MANAGE
2.3 Thermal Mass Flow Sensor :
Thermal mass flow meter measures gas mass flow based on thermal diffusion theory
and thermal principle of Newton. It has two RTDs as its sensor. One RTD is heated to T1 by a
heating power rate of P, the other is not heated but to measure the medium temperature T2. So
there is a temperature difference TD= T1-T2. TD reach max when mass flow is 0. When the mass
flow Q increases, the heat on T1 is taken away so the T1 decline and the TD become smaller. So
there is a certain relationship between heating power rate P, difference of temperature TD and
mass flow Q as below.
P/TD = K1 + K2 F(Q)^K3
The K1, K2 and K3 in above equation is constant related to the character of medium.
So the mass flow Q can be get through measuring the heating power rate P and difference of
temperature TD. In actual application, there are two different methods, one is consistent current
method and other one is consistent temperature method.
2.4 Key Features of thermal mass flow meter:
Insertion type sensor.
Independent of temperature and pressure change.
Ultra wide 1:2500 turndown ratio, measurement range from 0.1 Nm/s to
250 Nm/s.
2.8” ultra wide viewing angle LCD capacitive touch.
No moving parts, low pressure drop.
Standard RS485 Modbus RTU interface and 4-20mA current/pulse output.
WAFS 104
THERMAL FLOW SENSOR