Operating Instruction
MiniAir60
TSR Messtechnik AG
Ebnatstrasse 164
CH-8207 Schaffhausen
Tel. +41(0)41 510 23 05 / Fax +41(0)41 510 23 08
E-Mail:
Homepage: www.tsr-ag.ch
With this Schiltknecht anemometer you have acquired a precision instrument of
exceptional quality. You also obtain the benefit of our many years’ experience in
metrology and our close collaboration with Swiss and foreign universities, technical
colleges and research institutes.
Our factory employs the greatest care in the manufacture of the MiniAir60. All probes
have been calibrated in our accredited wind tunnels and are checked to conform to the
required tolerances.
A. Description
The MiniAir60 ist particularly suitable for the heating, air conditioning and ventilation
engineer. The following characteristics, based on practical requirements and unique in
their combination, ensure efficient and reliable measurements:
-
The aerodynamically optimised probe form represents the basis for accurate
measurement. The probes are very largely unaffected by flow direction and are
extremely reliable.
-
The interchangeability of the snap heads ensures that there is no interruption of the
measurement in case of damage. The changeover is extremely easy: the head is
simply pulled vertically of the instrument.
B. Operating principle
Measurement sensor
The impeller speed corresponding to the flow velocity is recorded electronically without
feedback and converted via transducer.
General handling tips
- Do not bend connection cable (danger of cable break)
- Cleaning only according to cleaning instructions
- Allow heated high temperature sensors to cool slowly; never cool down with cold water
or similar.
- Remove used batteries immediately and dispose of them properly to prevent leakage
and damage to the unit.
- Strong electromagnetic interference sources (transformers, radios, transmitters, etc.)
can influence the measurement accuracy.
C. Operation
Connection diagram (3-wire system)
The cable shield must be connected to the housing shield of the connected device
(ground the sensor on one side only).
For unshielded devices, the cable shield must be connected to the device ground (GND)
(do not ground the sensor).
ATTENTION
Wrong connection will destruct the probe (no Pol-Protection) !
Response time
The output signal is instantaneous.
Response time of the electronics:
when connecting the power supply (on/off):
immediately
Time to reach 63 % of final value:
5.2 ms
Response time of the impellers:
Increase in flow:
1.0 sec.
Decrease in flow:
8.0 sec.
Cleaning instructions flow sensor
Important: Device and sensor must be switched off or disconnected before cleaning.
The probes are extremely sensitive measuring instruments and cleaning must therefore
be carried out with extreme caution.
Fibres or other foreign objects can be carefully removed with fine tweezers.
Care must be taken not to bend or otherwise damage the wing or axle.
Under no circumstances may the adjustment of the bearing screws be changed; incorrect
measurements may result.
Never reach into running impellers with hard objects!!
Never use cleaning agents for plastic sensors that remove the plasticizer from the plastic
(practically all solvents).
We recommend cleaning the sensors:
-
unning water
-
soapy water
-
pure petrol
Cleaning example:
1. Carefully swivel the impeller head part in clean pure petrol for approx. 10 minutes.
Then swivel the impeller head part in clean petrol for approx. 1 minute so that the
impeller bearings are relubricated.
If soapy water is used as cleaning solution, it is advisable to thoroughly wash out the
soap solution with distilled water before lubricating with petrol.
2. After cleaning, rub the outside of the sensor dry with a clean, lint-free cloth.
3. Allow the impeller head to dry for approx. 30 minutes.
Only clean the impeller head part!
Never immerse the sensors completely in the solution.
D. Technical data
Probe
Medium
non-corrosive gases
Measuring ranges: Flow
Output
Accuracies
Micro:
0.6 bis 20 m/s
0
– 2926.7 Hz
+ 1.0% fs., plus + 3.0% rdg
0.7 bis 40 m/s
0
– 2803.8 Hz
+ 1.0% fs., plus + 3.0% rdg.
Micro Water
0.04 bis 5 m/s
0
– 760.0 Hz
+ 2.0% fs., plus + 3.5% rdg.
0.05 bis 10 m/s
0
– 756.0 Hz
+ 2.0% fs., plus + 3.5% rdg.
Mini:
0.4 bis 20 m/s
0
– 1804.0 Hz
+ 1.0% fs., plus + 1.5% rdg.
0.5 bis 40 m/s
0
– 1725.0 Hz
+ 1.0% fs., plus + 1.5% rdg.
Mini Water
0.02 bis 5 m/s
0
– 461.0 Hz
+ 2.0% fs., plus + 3.0% rdg.
0.03 bis 10 m/s
0
– 457.0 Hz
+ 2.0% fs., plus + 3.0% rdg.
Macro:
0.2 bis 20 m/s
0
– 960.20 Hz
+ 1.0% fs., plus + 1.5% rdg.
0.3 bis 40 m/s
0
– 926.99 Hz
+ 1.0% fs., plus + 1.5% rdg.
Head diam.
Micro
ø 11 x 15 mm
Mini
ø 22 x 28 mm
Macro
ø 80 x 85 mm
Access opening
Micro
16 mm
Mini
35 mm
Macro
120 mm
Probe length
Micro
165 mm
Mini
175 mm
Macro
225 mm
Cable length
5 m
Operating temperature
-10 bis +80 °C
(Water: 0 bis +70 °C)
Storage temperature
-30 to +100 °C
External power supply
4.5
– 5.5 VDC
Current consumption
0.5 mA at 5 Volt
Important Informations:
-
Avoid moisture, extreme temperatures, vibrations and mechanical shocks. Do not
shake!
-
Cleaned the casing and glass with a soft, slightly damp cloth. Do not use cleaning
materials or solvents! Do not immerse the system in water!
-
Remove exhausted battery immediately or else they may leak and damage the
instrument. Do your part of the environement! Old batteries don’t belong in the bin,
take them to a collection point for old batteries or hazardous waste.
-
Strong electromagnetical interferences (e.g. transformer, handy, radio transmitter) may
affect the accuracy of the measuring instrument.
-
The system may not be modified! Use only original accessories.
-
The product must not have public trash collection or garbage cans be
disposed of. It must be either according to the WEEE Directive or can be
disposed of properly to the company Schiltknecht Messtechnik AG are sent
back at his own expense.
Guarantee
Our guarantee covers verifiable material or manufacturing defects on systems and
devices for a period of 12 months from delivery. For manhandling the guarantee is not
applicable.
In the case of an event bringing the guarantee into operation, the defective part is
repaired or replaced according to our choice. Transport and travel costs are paid by the
ordering party.
The guarantee provisions of the supplier are applicable for non-Schiltknecht material.
We accept no liability with respect to the suitability of the delivered products for the
envisaged application.
Our guarantee is in all cases limited to the defective device. Liability for any secondary
damages whatever is expressly ruled out.
EC-Declaration of Conformity:
Instrument:
Vane anemometer
Instrument type:
MiniAir60
Type designation:
f.6xx.60.xx
The signing legal authorities state, that the above mentioned equipment meets the
requirement of the electromagnetic compatibility (EMC) according to the Guideline of
Counsel 2014/30EU.
The evaluation procedure of conformity was assured according to the following
standards:
- EN 55022:2011-12 VDE 0878-22:2011-12 (emission)
- EN 61000-6-1:2007-10; VDE 0839-6-1:2007-10 (immunity)
- (With frequencies around 1 MHz it can lead to interference)
Manufacturer:
TSR Messtechnik AG
Ebnatstrasse 164
CH-8207 Schaffhausen Switzerland
Certified according to
EN ISO 9001:2015
and
EN ISO/IEC 17025:2017
(for air flow)
Date: 30.09.2019
Supply
Signal
Ground
Shield
yellow
white
black
yellow
white
black
Shield
WARNING!
means that death, serious injury or
significant property damage can
occur if the appropriate
precautions are not taken.