Manostar MS61A-RA User manual

RoHS
READ THE INSTRUCTION MANUAL BEFORE USING
INSTRUCTION MANUAL
MANOSTAR SWITCH
MS61A-RA
No. TR-MS61A-RA-E00
1-2-3,Nishi-shiriike-cho,Nagata-ku,Kobe,Hyogo 653-0031 JAPAN
TEL. [phone] FAX. [phone]

TABLE OF CONTENTS
ページ
INTRODUCTION ........................................................................................................................... 1
Ⅰ．PRECAUTIONS .................................................................................................................... 1
Ⅱ．THE NAME OF EACH PART ..................................................................................... 2
Ⅲ．INSTALLATION
1．Caution of service condition.................................................................................... 2
2．Installation of MS61A-RA ......................................................................................... 2
3．Installation position ....................................................................................................... 3
4．Wiring material .................................................................................................................. 3
5．Accessory for MS61A ................................................................................................. 3
6．Pressure of measurement and connection of piping ................................ 3
Ⅳ．SETTING OF PRESSURE
1．Switch contact configuration .................................................................................. 4
2．Setting of upper limit/ lower limit ........................................................................ 4
3．Setting the dial ................................................................................................................. 5
4．Reset time .......................................................................................................................... 5
Ⅴ．ABOUT BUILT-IN SWITCH
1．Reed switch structure and operation principle ........................................
6
Ⅵ．GENERAL PRECAUTIONS
1．Prohibition of common piping ............................................................................... 7
2．Prevention of clogged piping due to drain ..................................................... 7
3．Measurement of high temperature gases ...................................................... 7
4．Errors caused by long distance piping ............................................................ 7
Ⅶ．PERIODIC INSPECTION ............................................................................................... 8
Ⅷ．PRODUCT WARRANTY ................................................................................................ 8

1
INTRODUCTION
Thank you very much for purchasing of "MANOSTAR SWITCH MS61A-RA".
△
！
Caution
To ensure your safety in using this instrument :
・Be sure to read the instruction manual carefully before using the instrument so that you
can use it properly.
Wrong use may result in failure of the instrument and lead to its damage and accident. This
manual should be kept in a proper place so that you can refer to it any time you need.
Ⅰ．PRECAUTIONS
△
！Warning
・Do not use the instrument where flammable gas is present.
The instrument is not explosion-proof. Do not use instruments in the circumstance where flammable gas is present. It
may cause explosion.
・Do not use the instrument at the place where corrosive gas is present.
The instrument is not corrosion resistance construction. Measuring corrosive gas may corrode the receiving element
and housing material of the instrument. It is expected that corrosive gas leaked out of the instrument will harm a
person.
・Do not apply the pressure to the instrument more than it can withstand.
The diaphragm and the retainer are broken and cause of injury or accident, etc. disaster if the pressure exceeding
withstanding pressure of the pressure receiving element is applied to the instrument. The case body and the
transparent cover of the instrument are broken and cause of injury or accident, etc. disaster if the pressure exceeding
withstanding pressure of the instrument body is applied to the instrument.
・The instrument is measurable for air and non-corrosive gas only.
The machine is exclusive use of dry air (90％RH or less). Using measuring the water or oil it may be damaged and
causes the accident.
・Avoid using where the instrument is subject to many vibration and impact.
Using the instrument where intensified vibration and impact may be damaged the instrument. It is expected that gas
leaks of the instrument which harms a parson.
・Do not exceed rated surrounding temperature, humidity and altitude in use.
Using the instrument by exceeding rated surrounding temperature and humidity and altitude it may be damaged and
cause the accident.
・Do not disassemble or reconstruct the instrument.
It may void the warranty.
・Do not exceed rated voltage in using
Using the instrument by exceeding rated voltage may cause fire or electric shock.
・Wire correctly.
Incorrect wiring may cause fire.
△
！Caution
・As to where to install and how to install this instrument, be sure to follow the instruction manual provided
so as to ensure a proper method.
・Use the instrument indoors.
・In case of not being installed in dry and well-kept clean locations, the instrument must be enclosed in box.
・Do not use organic solvent for cleaning.
Use a cloth soaked with water-diluted neutral detergent to wipe the surface of a product. Using of organic solvent
causes damage on the surface.
・Dropping the product.
Product is a precision instrument. If you drop the product, there is a possibility that the exterior, also the interior
mechanism damage.
・Removal of the piping
Please do not pull the pipe with a strong force. There is a possibility that the pipe cap is broken.

2
Ⅱ．THE NAME OF EACH PART
Ⅲ．INSTALLATION
Before using this instrument, make sure if it is the type that you requested and meets the demand of the
environment, pressure and piping conditions where it is used, by specification.
1. Caution of service condition
a) Do not use the instrument in a place subjected to direct sunlight, vibration or shock, or excessive
moisture. In particular, vibration and shock to the instrument should shorten its life.
b) Use under the medium and ambient temperature from - 10 to + 50 ℃.
c) The instrument is not waterproof. Do not use it in a place subjected to rain, or other splashing water.
d) In installing the instrument, select the place where the ground is smooth and flat.
2．Installation of MS61A-RA
Panel cut size
△
!
Caution
・The tightening torque of the screw is 1 N･m.
・Do not apply excessive torque more than
stipulated value, otherwise it will damage the
body of the instrument.
１２
2×φ4.5
installation holes
Pointer
Dial
M3.5 terminal screws
under cover
Installation screw
for dial cover
High pressure
side tube tap
Low pressure
side tube tap
80±0.3
2×φ5 or M4

3．Inst
a
A
f
4．Wiri
n
C
h
W
M
5．Acc
This co
v
dial car
e
6．Pre
s
a)
b)
c)
a
llation posi
f
ter inspectio
n
n
g material
h
oose the wi
r
W
ire by perfor
m
3.5 screws.)
essory for
M
D
bra
s
v
er avoids th
e
e
lessly.
s
sure of me
a
Measureme
n
Connect t
h
The lowe
r
Measureme
n
Connect t
h
opened to
a
Measureme
n
Connect t
h
low pressu
r
△
！
Caution
U
1
8
Installa
t
vertica
l
tion
n
and adjust
m
r
ing material
d
m
ing the term
M
S61A
D
ial cover se
t
s
s-made [ opti
o
e
trouble tha
t
a
surement
a
n
t of positive
h
e tube to th
e
r
pressure po
r
n
t of negative
h
e tube to th
e
a
tmosphere,
b
n
t of differen
t
h
e tube from
t
r
e piping con
n
se of in a po
s
Vertical
10゜
9
90°
8
0°
10°
t
ion position f
l
is available.
m
ent in accor
d
d
epending on
ination of the
t
o
n ]
Product
c
TCVRA
-
t
someone tu
r
a
nd connec
t
pressure
e
high pressu
r
r
t (L) should
o
pressure
e
low pressur
e
b
ut do not re
m
t
ial pressure
t
he high pres
s
n
ector to the
s
ition other t
h
plane
0°
9
0°
rom upward
h
3
d
ance with th
the load. Te
r
e
crimping ter
m
c
ode
-
61
r
n set
t
ion of pipin
g
r
e side piping
opened to at
m
e
side piping
c
move the pip
i
s
ure piping c
o
low pressure
h
an the spec
Horizo
n
h
orizontal to
e specified in
r
minal screw
o
m
inal (O.D. l
e
P
o
g
connector (
H
m
osphere, bu
t
c
onnector (L
)
i
ng connecto
r
o
nnector to t
h
port (L).
ified is out o
f
n
tal plane
s
tallation pos
o
f the produc
t
e
ss than φ8
Termin
a
o
lycarbonate-
m
H
).
t
do not rem
o
)
. The high p
r
r
.
h
e high press
u
f
accuracy w
a
On inst
a
positio
n
s
ition, and sh
i
c
t is M3.5.
which match
e
al cover
m
ade [ install
e
o
ve the pipin
g
r
essure port
(
u
re port (H)
a
a
rranty.
a
llation panel,
n
is available.
i
pped.
e
s the genera
l
e
d ]
Product cod
e
TCA-61A
g
connector.
(
H) should be
a
nd from the
following
l
e

4
Ⅳ．SETTING OF PRESSURE
1．Switch contact configuration
・Composition of contact of this instrument is as shown on the
right.
・When no pressure is applied, the connection between COM
(1) and N.O. (2) is open.
・When the differential pressure increases and reaches the set
pressure, the contact between COM. (1) and N.O. (2) is
closed.
2．Setting of upper limit/ lower limit
・When differential pressure applied to the instrument is
increased starting from zero and changes over the electric
contact from N.C. (normal close) to N.O. (normal open), the
pressure at this moment is called “actuation pressure”.
・When this differential pressure decreases from the pressure
higher than this actuation pressure activating electrical
contact and returning the contact from N.O. (normal open) to
N.C. (normal close), the pressure at this moment is called
“reset pressure”.
・There is certain difference between actuation pressure and reset pressure and this is called “dead band”.
・There are two types of the instrument. One is called “upper limit setting type”type (H) whose scale of
setting knob is adjusted on actuation pressure, the other is called “lower limit setting type”type (L)
which is adjusted on reset pressure.
・Depending on the purpose of use, choose the instrument either “upper limit setting type”or “lower limit setting type”
Please confirm the following table about the respective movement.
In case of 50-300 Pa range with set value 100 Pa. (dead band is 60 Pa)
Setting of scale Adjusting of scale Movement of contact
Upper limit
setting type
Adjusted in activating
pressure
When the differential pressure increases, the circuit is closed
between N.O. and COM. at 100 Pa.
Then as the differential pressure decreases, the circuit is opened
between N.O. and COM. at 40 Pa.
Lower limit
setting type
Adjusted in reset
pressure
When the differential pressure increases, the circuit is closed
between N.O. and COM. at 160 Pa.
Then as the differential pressure decreases, the circuit is opened
between N.O. and COM. at 100 Pa.
△
！
Caution
It can't be changed from the lower limit setting to the upper limit setting or vice versa.
Differential
pressure
Actuation pressure
Reset pressure
Dead band
Time
COM.
1
N.O.
2
Increase of
differential
pressure

5
3．Setting the dial
Use the dial and pointer, when you set the “Activating pressure” or “Reset pressure”.
Set the "Activating pressure" for the upper limit setting.
Set the "Reset pressure" for the lower limit setting.
Set the tip of the pointer to the pressure you desire by knobbing the outer periphery of the dial to rotate the
dial. Turning the pointer from the lower side (anti-clockwise) is recommended to set accurately with good
reproducibility. Turning the pointer from the lower side (anti-clockwise) is recommended to set accurately
with good reproducibility.
4．Reset time
The reset time means the time needed for the differential pressure to decline to the reset pressure from the
activating pressure (i.e., the electrical contact is reset) when the differential pressure is sharply reduced to
zero. It is about three seconds at 20 Pa, and one second at more than 50 Pa for Manostar switches. (This
value is only for the instrument itself and does not include the effect of piping.) Therefore, a response
quicker than this value is not possible.
△
！
Caution
Do not turn the dial too much exceeding the upper bound or the lower bound of the scale.
It causes performance deterioration and the failure.
Pointer
Dial

6
Ⅴ．ABOUT BUILT-IN SWITCH
1．Reed switch structure and operation principle
A reed switch is a switch that switches the contacts “ON” and “OFF” using a magnetic field, and two
ferromagnetic leads face each other with a small gap. In addition, an inert gas is sealed in the glass tube to
prevent activation of the contacts, improving reliability and extending the life.
When an external magnetic field is applied in the axial direction of the reed switch's reed, the reed is
magnetized and the opposing reeds come into contact and close the circuit. Also, if the magnetic field is
eliminated, the circuit can be opened by the elasticity of the reed.
△
！
Caution
The contact may malfunction due to the influence of the external magnetic field. When
installing this instrument, keep it sufficiently away from high voltage and large current
circuits, or provide a magnetic shield if necessary and check the operation before use.
S-pole
S-pole N-pole
In glass tube
“OFF”
“ON”
N
-pole
S
-pole
N-pole

7
Ⅵ．GENERAL PRECAUTIONS
1．Prohibition of common piping
Piping each of pressure detectors and pressure
receiving instruments tube exclusively dedicated for
it, and do not connect the piping commonly with the
adjacent system as shown in the right figure.
Common piping causes measurement error because
the pressure of each system interferes.
2．Prevention of clogged piping due to drain
If drain remains within the line, it causes measurement error. Be sure to
install the pressure receiving instrument above the pressure outlet port
of the pressure detector and arrange the line so that the drain water
should not remain in the slack piping.
If the arrangement mentioned above in not possible, install a drain tank
within the line as shown in the right figure and clean it once in a while.
After the cleaning of the tank, check that the air tightness is fully kept.
3．Measurement of high temperature gases
In the pressure measurement of high temperature gas, use the pressure
detector (pitot tube) made of the heat-proof metal (such as stainless
steel), and connect it with the pressure receiving instrument through a
metal tube which is long enough to cool down the high temperature gas.
4．Errors caused by long distance piping
The speed of response is delayed when the product is used for remote
monitoring.
In such application, the I.D. of the connection tube should be as large as
possible.
The time constant is almost inversely proportional to the inner cross
sectional area of the piping. (refer to the diagram below)
If the piping conditions of the high and low pressure side are significantly
different, the difference in the piping resistance between high and low
pressure side causes the difference in pressure transmission time, and
the measurement becomes inaccurate.
Piping length
Instrument
body
Independent piping○
Passa
g
ewa
y
Passageway
Room BRoom A Room BRoom A
MS61A MS61A MS61A MS61A
Common piping×
Installation diagram of drain tank
Switch
Drain
Drain
tank

8
Ⅶ．PERIODIC INSPECTION
Generally speaking, it is important not to exert external stress to keep life and reliability of the instrument for a
long time.
Proper use of this instrument will ensure its faultless service over many years without any necessity of periodic
lubrication.
However, it is recommended that it is subjected to periodic inspection (calibration) once a year.
Ⅷ．PRODUCT WARRANTY
Warranty Period
The warranty period shall be for one year from the date that the product has been delivered to the location specified
by the purchaser.
Warranty Scope
In the event of any failure or defect in the product or non-conformity of specifications due to the reasons solely
attributable to Yamamoto Electric Works, Yamamoto Electric Works shall remedy such malfunctioning or defective
product at its own cost in one of the following ways to be selected by Yamamoto Electric Works:
ⅰ) repair such product, ⅱ) replace such product.
However, this Warranty shall not cover the damages or defects that arise due to any of the following reasons.
(1) Any failure resulting from improper conditions, improper environments, improper handling, or improper usage
other than described in the instruction manual or the specifications arranged between the purchaser and
Yamamoto Electric Works.
(2) Any failure resulting from factors other than a defect of our product, such as the purchaser’s equipment or the
design of the purchaser’s software.
(3) Any failure resulting from modifications or repairs carried out by any person other than Yamamoto Electric
Works’ staff.
(4) Any failure caused by a factor that cannot be foreseen at a scientific/technical level at the time when the
product has been shipped from Yamamoto Electric Works.
(5) Any disaster such as fire, earthquake, and flood, or any other external factor, such as abnormal voltage, for
which we are not liable.
Yamamoto Electric Works specifically disclaims all implied warranties of merchantability and/or fitness for a particular
use or purpose, as well as liability for incidental, special, indirect, consequential or other damages relating to the
product.
*This product warranty is only valid within Japan.
Product Applicability
Our products are designed and manufactured as general-purpose products for general industries. Therefore, our
products are not intended for the applications below and are not applicable to them.
(1) Facilities where the product may greatly affect human life or property, such as nuclear power plants, aviation,
railroads, ships, motor vehicles, or medical equipment
(2) Public utilities such as electricity, gas, or water services
(3) Usage outdoors, under similar conditions or in similar environments
This document has been translated from the original Japanese version, and the original Japanese version takes first
priority.
Be sure to refer to the original Japanese for the details of this warranty.
<Prior notice>
The specifications and description of the product explained in this instruction manual may be subject to change
without prior notice because of modification and the like.