Sino Instruments HS703 Manuel utilisateur
User manual
HS703
Pneumatic Comparator
2
The operating instructions are parts of the products and must be kept in
the immediate vicinity of the instrument and readily accessible to skilled
personnel at any time.
Skilled personnel must have carefully read and understood the operating
instructions prior to beginning any work.
The manufacturer's liability is void in the case of any damage caused
by using the product contrary to its intended use, non-compliance with
these operating instructions, assignment of insufciently qualied skilled
personnel or unauthorized modications to the instrument.
HUAXIN reserve the rights to change the contents or form of these
operating instructions at any time without prior notice having been given.
Claim
......warns you against actions that can cause injury to people or
damage to the instrument.
...... points out useful tips,recommendations and information for
efcient and trouble-free operation.
In order to protect your products,your own and others safety,please read
this manual carefully before your operation,otherwise it may cause trouble.
Huaxin is not liable for any safety problems or damages caused by misuse or
incorrect operation.
Safety information
Symbol
Warning
The system must only be operated by trained and authorised personnel
who know the manual and can work according to them.
Any operation not included in the following instructions or outside the
specications must not be attempted.
Don’t use and disable the Product if it is damaged.
Operate by professional
Use the product only as specied
Please use non-damage goods
1
2
3
3
Disassembling may cause physical injury or equipment damage.Only
qualied technicians are allowed to x the equipment.Please call our
service staff for repair instruction and guidance if there would be
anything wrong.
No disassemble
The item belongs to non-oil equipment, if you use the item to calibrate
oil gauge,there will be oil left behind in the system,and it will not
provide pressure anymore.Meanwhile that may pollute air gauge.
If this equipment will be in idle for a long time,please shut off the
relieve valve and provide a little pressure.In order to avoid the air
enter into the item inside .that will affect the system stability when
you use it next time.
Don’t switch the reverse valve(positive/vacuum)when there is
pressure inside the system.if you switch the reverse valve when the
whole system have pressure,maybe the hand pump will spring up and
cause personal hurt.
If the item left idle, please operate the reverse valve once time each
month.Or the reverse valve couldn’t be use, at this time, please call
our service clerk.
Don’t calibrate oil gauge
Store the item with pressure
Pay attention to reverse valve
Operate reverse valve regularly
5
4
6
7
8
Labelling
Huxin Instrument(Beijing)Co.,LTD
Model
Range
Product
No.
Date
(-0.95-60)bar
Pneumatic comparator
140902799
2014.09
HS703
Manufacturer
Model
Product name
Pressure range
Serial number
Date of manufacture
4
Claim
Safety
1.Summary 1
2.Technical Specication 1
3.Components 2
4.Working principle 3
5.Operation 4
6.Troubleshooting 7
7.Maintenance 8
8.Support 8
1
1.Summary
2.Technical Specication
Model:HS703 Pneumatic comparator
Generated pressure range:(-0.95~40)bar,(-0.95~60)bar
Working media:Air
Adjust resolution:0.0001bar(10Pa)
Material:Body:Stainless steel/Aluminum
Seals:Buna-N
Output interface connection:M20×1.5Female
Output quantity:Two
Package:Carrying black bag.Carrying case(Select)
Weight:2.7kg
Dimension:286L×198W×140H(mm)
HS703 Pneumatic comparator is portable structure and designed to generate
pressure from vacuum to 60bar.Built-in lter protects the pump from dirty
and make maintenance easy and convenient.The F-adjust valve could
accomplish 0.0001bar(10Pa)pressure resolution.Especially the lever lead
screw design makes user operate in economize labor.The design of reverse
valve makes the switch of vacuum and positive pressure more smooth.Two
standard pressure outputs are easy to connect gauges under test without
using the wrenches.It widely calibrates pressure instruments in field and
laboratory.
HS703 provides pressure measurement for calibrating pressure instruments
in eld and laboratory.It can be extensively used in power,chemical,petrol,
metallurgy,metering,military industry,etc.
Portable structure
Built-in lter protects the pump from dirty and make maintenance easy
and convenient
User operate in economize labor
Characteristics
Functions
2
6
7
Hand pump
Generate pressure about 10-12bar by run the hand pump up and down
repeatedly.Hand pump will realize prepressing function.
Lead screw
Increase pressure by turning the lead screw clockwise,decrease pressure
by turning the lead screw anti-clockwise.
Reverse valve (positive/ vacuum)
Press the button in order to switch between positive pressure and vacuum.
(Push the reverse is positive pressure calibration, pull for vacuum).
Relieve valve
Have to close before pressure generation (clockwise).Slowly Open it to
relieve the pressure(anti-clockwise).
F-adjust valve
To realize the ne adjustment of pressure value (clockwise to increase
pressure).
Plugs
Tighten it up when not in use.
Output
There are two outputs.one is designed for standard gague,the other for
gauge under test.
1
2
3
4
5
3.Components
7
2
53
6
1
4
3
4.Working principle
Output Output
F-adjust valve
Reverse valve
Positive pressure
Hand pump
Vacuum
Lead Screw
Relieve valve
HS703 is composed of hand pump,lead screw,F-adjust valve,relieve
valve,reverse valve,outputs,etc.The pressure gauge can be installed
quickly.Push or pull reverse valve to switch positive pressure position and
vacuum position. It is easy to prepressurize by running hand pump up and
down,then compress the work medium by turning lead screw clockwise(anti-
clockwise),that could realize pressure increasing(decreasing)secondary.Fine
adjust the F-adjust valve to reach desired point more accurately.
4
Record 0bar record and close the relieve
valve.Providing pressure about 4 bar by hand
pump up and down,then adjust the F-adjust
valve to second standard point(5bar).
D
Remove the plugs of outputs.Connect the
standard gauge and the gauge under test to the
two outputs interfaces separately, it must rm
in place. Otherwise,it will be leakage.
Set F-adjust valve to the mid
position,and for lead screw,turn
all the way out.
B C
Rotate the lead screw clockwise to make
pressure value close to next standard points,and
adjust F-adjust valve to get exact values. Pressure
rising&stabilize to 10bar,15bar,20bar,25bar in
turn.Meanwhile,record the data.
E
5.Operation
Put HS703 on the level;Turn the relieve valve
anti-clockwise to open it and make sure the
reverse valve is in positive pressure position.
Take pressure gauge 25bar(2.5Mpa)as example(The standard point:0bar,5bar
,10bar,15bar,20bar,25bar)
For example(1):
A
Pressurizing by
turning it clockwise
Turn it clockwise
until closed
Fine adjust
Up and down
Fine adjust
Open by turning it
anti-clockwise
Connect
Push it to positive
pressure position
Turn all the way
out anti-clockwise
In the mid position
5
Finish the Loop calibration and open the
relieve valve to release the pressure.
Change gauge under test and
calibrate the next one.
GH
Loop calibration:Decrease pressure by
turning lead screw anti-clockwise (or
together with relieve valve),and adjust the
F-adjust valve to get exact values.Record
the data when the pressure stabilize on
20bar,15bar,10bar,5bar and so on.
F
Take vacuum pressure gauge as example (The standard point:0bar,-0.2bar,
-0.4bar,-0.6bar,-0.8bar,-0.95bar)
For example(2):
Open
Depressurizing by turn
it anti-clockwise
Fine adjust
Change gauge
Put HS703 on the level;Turn the relieve
valve anti-clockwise to open it and make
sure the reverse valve is in vacuum
position.
A
Remove the plugs of outputs.Connect the
standard gauge and the gauge under test to
the two output interfaces separately, it must
rm in place.Otherwise,it will be leakage.
Set F-adjust valve to the mid
position,and for lead screw,turn all
the way in.
B C
Connect
Turn all the way
in clockwise
In the mid position
Open by turning it
anti-clockwise
Pull it to select
vacuum position
6
Record 0bar record and close the relieve
valve.Providing pressure by hand pump and
leading screw let pressure near -0.2bar,then
adjust the F-adjust valve to get exact pressure
value.
D
Use the hand pump leading screw and
F-adjust valve to calibrate other standard
point(-0.4bar,-0.6bar,-0.8bar).If the pressure
value is up to -0.92bar,pls create negative
pressure by turning lead screw anti-
clockwise until full scale.
E
Chang gauge under test and
calibrate next one.
H
Finish the loop calibration and open the relieve
valve to release the pressure.
G
Loop calibration:Turning lead screw
clockwise (or together with relieve valve), and
adjust the F-adjust valve to get exact values.
Record the data when the pressure stabilize on
-0.8bar,-0.6bar,-0.4bar, -0.2bar and so on.
F
Remark:
1.Hold the lead screw with each hand,turn in and out slowly to complete
Turn it clockwise
until close
Up and down
Fine adjust
Open
Change gauge
Up and down
Fine adjust
Fine adjust
Anti-clockwise
Slowly,anti-clockwise
Clockwise
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