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MODEL No.775

Oil-sealed Pressure Gauges

OIL-SEALED PRESSURE GAUGES www.00033.net

ASAHI GAUGE MFG. CO.,LTD.

J A PA N

Oil-sealed pressure gauge

Description

Pressure gauge installed at the place where the mechanical vibration exists, causing terrible shake of its pointer and may result in the operation failure in a short time. Oil-sealed pressure gauge is the most suitable for using in such place. Silicon oil is filled in 775E contact type. Size Casing A 60 B mounting hole D fixture Connection thread G 1 4 R G 1 4 R G 1 4 R G 1 4 R G 3 8 R G 1 4 R G 3 8 R G 1 4 R G 3 8 R G 3 8 R G 1 2 R G 3 8 R G 1 2 R G 3 8 R G 1 2 R Connection shape U U U U U U U U U U U U U U U

Standard specifications of Oil-Sealed pressure gauge

Model Pressure range Case Type SUS Vacuum Bs 775-A230 775-A231 -A631 -A630 -B231 -B230 -B631 -B630 -D231 -D230 -D631 -D630 -A241 -A240 -A641 -A640 -A341 -A340 -A741 -A740 -B241 -B240 -B641 -B640 -B341 -B340 -B741 -B740 -D241 ­0.05MPa~0 -D240 -D641 ­0.1MPa~0 -D640 -D341 -D340 -D741 -D740 -A351 -A350 -A751 -A750 -A451 -A450 -A851 -A850 -B351 -B350 -B751 -B750 -B451 -B450 -B851 -B850 -D351 -D350 -D751 -D750 -D451 -D450 -D851 -D850 Compound Pressure Material Finish Glass Liquid media Ambient Weight temperature

Structure

Internal mechanism in the case and the pointer are enclosed in glycerine in order to absorb the strong outer vibration by means of utilizing glycerine viscous resistance.

Features

Case is completely sealed and stainless steel. Particularly long life Bourdon-tube is used.

A

MPa ­0.1~0.1 ­0.1~0.2 ­0.1~0.3 ­0.1~0.4 ­0.1~0.6 ­0.1~1 ­0.1~1.5 ­0.1~2

Glycerine solution

The glycerine solution (The Fire Services Act; Third Petroleum and Oils Group of the Fourth Category) that withstands the low temperature application is applied and it is harmless even if used in the food industry. Glycerine also reduces risk even if a fire took place.

75

B mounting hole

A type

D fixture

Zero adjustment mechanism

Product of 100 is available to install the external zero adjustment by the customer specification. A

Durability

It provides excellent durability in comparison with the general pressure gauges. (See the back of this page.)

100 B mounting hole D fixture

Accuracy: ±1.6%F.S. (­5~+40°C)

MPa 0~0.05 0~0.1 ~0.2 ~0.3 ~0.4 ~0.6 ~1 ~1.5 ~2 ~2.5 ~3.5 ~5 ~7 ~10 ~15 ~25 ~35 ~50 *~70 *~100 *~150 *~200 * mark means 100 only.

Lid pressedin

About 0.3kg

Glycerine solution Organic * Silicon oil ­5~+45°C glass particularly for BS,SUS Bayonet used in cold regions.

About 0.5kg

SUS304 Stock

When ordering

Model x Range Specify with or without zero adjustment for 100. Example 775-B851-5MPa with zero adjustment is based on the follows: Case: B type, Wet part thread: 1/2R, Dial dia: 100, Range: 5Mpa, with zero adjustment, Element material: SUS316.

About 1kg

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B type dimensions

b1 Safety valve 3-d2 hole P.C.D.E

D D

* 150 is available.

A type dimensions

D type dimensions

b2 Safety valve Zero adjustment Available for 100 if specified

b a Panel thickness : Max. 4t Safety valve Fixture

D1

a1

a2

n

Connection thread(G)

5

h

h

k k k L2 2 L2 2 L2 f f f f h

f f 3 Connection thread(R)

3

Connection thread(R)

5

Connection thread(G)

Connection thread(R)

5

Connection thread(G)

A type, B type dimensions

Size 60 75 G R G R Thread G1 4 R1 4

14 38 38 12

3

D type dimensions

D 66.5 87 118 D1 80 98 128 a1 13 16.5 20 a2 14 17.5 20 b1 35 44 54 b2 36 45 54 d2 4.5 5.5 5.5 E 72 88 115 f 16 16 16 18 18 20 K 10 10 12 25 L2 12 14 17 h 63 63 75 77 102 104 D4 Size Thread D G1 4 60 66.5 61.5 R1 4 G 14 75 87 76.5 R 38 G 38 100 118 103 R 12 a 28 30 41 b 35 44 54 n 18 25 32 f 16 16 16 18 18 20 K 10 11 12 L2 12 14 14 17 h 26 26 28 30 29 33

D type

100

Specifications are subject to change without notice for improvement.

D4

B type

D

Special products

Consult the person in charge regarding the special product.

Use this gauge when the external vibration or pulsation is extremely heavy!!

Oil-sealed diaphragm pressure gauge with P device

Oil-sealed diaphragm pressure gauge

Oil-sealed pressure gauge with pointer contacts

775E-841A

775E

775E-841A-X

Product with micro switch is not available. Product flows current when the indicating pointer contacts the setting pointer. Allowable contact current: AC100V 0.5A

Vibration test data of the Oil-sealed pressure gauge

Tested pressure gauges: A General type: 100 x 1MPa B Glycerine filled type: 100 x 1MPa Operating oil: Machine oil with dynamic viscosity 0.36cm2/S

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0.54

A

0.52

Room temperature: 17°C Mounting direction: Y axis direction Amplitude: Reading: ±0.5mm Plot the minimum and maximum values when the entire system is vibrated under the load of 0.5MPa.

Shake of pointer MPa

0.5

20 40

60 80

100 Hz

0.48

0.46

Shake 0.51 0.5 of pointer 0.49 MPa

0.48

B

20 40 60 80 100 Hz

Information

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