Safety Sight And Level Gauge Glasses Special Tempered

DESCRIPTION

MAXOS
SHANMAN ENINEERING Sdn Bhd is proud to announce that we have been given the task and responsibility to assist in Sales and Marketing together with technical support on behalf of AUER Lighting Gmbh for their range of MAXOS Safety Sight and Level Gauge Glasses Special-tempered Made in Germany. Shanman will also use Maxos Products for their level gauge housings produced. Primarily Shanman Will cover S E Asia and Oceania Markets along with neighbouring countries. Please get in touch with us for your requirements.

The complete safety sight and
level gauge glass program

MAXOS® safety sight and level gauge glasses have proved themselves universally where visual process control is essential. This includes pressure vessels subjected to thermal and chemical loads and liquid-level gauge applications.
A high safety level is secured through the use of special borosilicate glass of high chemical durability, exceptional purity, and homogeneity. The low thermal expansion of our SUPRAX® 8488 borosilicate glass, combined with thermal prestressing (tempering) creates a high resistance to sudden temperature changes.

The material properties values and tight dimensional tolerances are guaranteed by production and quality controls. With these exceptional safety characteristics, MAXOS® safety sight and level gauge glasses can be used under extreme operational conditions. It is therefore mainly these safety aspects that influence responsible technicians again and again to choose MAXOS®.

MAXOS® product range
Specially tempered reflex and transparent level gauge glasses and disc
sight glasses can be supplied in accordance to:

DIN 7080/7081
BS 3463
JIS B 8211
MIL – G – 16356 D
Auer USA specification
High pressure
Customer specification
Aluminosilicate glass on request

For more information, please whatsapp us
wa.me/+60193871882

ADDITIONAL DETAILS

Glass type SUPR AX® 8488

Coefficient of expansion α 20 °C/300 °C	4.3 x 10–6 K–1
Transformation temperature	540 °C
Glass temperature for the viscosities dPas (Poise)	1013.0 560 °C 107.6 800 °C 104.0 1200 °C
Density at 25 °C	2.3 g/cm3
Modulus of elasticity	67 x 103 N/mm2
Poisson‘s ratio μ	0.20
Thermal conductivity λ at 90 °C	1.2 W/ M-K
Refractive index nd (λ = 587.6 nm)	1.484
Photoelastic parameter K	3.2 x 10–6 mm2/N

Chemical characteristics	Hydrolytic resistance	Acid resistance	Alkali resistance
Test acc. to	DIN ISO 719	DIN ISO 1776	DIN ISO 695
max. abrasion acc. to DIN ISO	0.1	<100 μg Na2O each 100 cm2	>75–175 mg each 100 cm2
MAXOS® max. abrasion	0.050	<60 μg Na2O each 100 cm2	<100 mg each 100 cm2
MAXOS®	HGB 1	–	class A2

The abrasion of MAXOS® glass in watery phase for
several temperatures as a function of the ph-value.

MAXOS® – a registered trademark of Auer Lighting GmbH
SUPRAX® – a registered trademark of SCHOTT AG

MAXOS ® Level Gauge Glasses

Long form reflex and transparent

Bending strength is determined by the surface compressive stress and the
inherent resistance of the glass. The inherent resistance is heavily dependent
upon the surface quality.

For safety reasons, the stress to the glasses caused by internal forces, thermal stress and vessel pressure have to be totally absorbed by the surface compressive stress so that a tensile stress of the glass surface is prevented.

Bending strength (typical values)

Standard level gauge glasses ≥ 150 N/mm2 21,000 psi Average 170 N/mm2 25,000 psi	High pressure level gauge glasses ≥ 180 N/mm2 26,000 psi Average 200 N/mm2 29,000 psi

Temperature

Thermal shock resistance Δ T 265 K
Max. permissible temperature 300 °C (572 °F)
Protected with mica 320 °C (608 °F)

Application conditions	Maximum permissible pressure		Maximum permissible temperature
	bar	psi	°C	°F
Saturated steam or hot water in direct contact with reflex or transparent sight glasses	35	500	243	470
Saturated steam or hot water in contact with transparent sight glasses protected with mica	103	1,500	320	608
Non-corrosive, non-steam service and no technically significant glass attack, with reflex or transparent glasses	280	4,000	320	608
Transparent sight glasses in contact with medias with no technically significant glass attack	345	5,000	38	100
High pressure transparent sight glasses in special armatures (gauges)	414	6,000	38	100

Special tempered MAXOS® glass under polarized light.

MAXOS ® Disc Sight Glasses

Technical charateristics

Bending strength	≥ 160 N/mm2	23,000 psi
Surface compressive stress	≥ 100–140 N/mm2	14,500–20,000 psi
Parallelism	≤ 0.20 mm	0.008 inches
Flatness*)	Diameter:	up to 100 mm ≤ 0.05 above 100 up to 150 mm ≤ 0.08 above 150 up to 200 ≤ 0.12 above 200 mm ≤ 0.15
Thermal shock resistance Δ T	265 K
Max. permissible temperature	300 °C	572 °F
Protected with mica	320 °C	608 °F

*) Measurements of flatness are taken only in the sealing area.

Dimensional tolerances

(DIN 7080)

Diameter

up to 135 mm        ± 0.5 mm
150 to 200 mm     ± 0.8 mm
above 200 mm     ± 1.0 mm

Thickness

up to 20 mm + 0.50 mm / – 0.25 mm
above 20 mm + 0.80 mm / – 0.40 mm

Calculation of the glass thickness

All MAXOS® glasses are marked with a production code number.

Available sizes
Special dimensional design on request, e.g. Ø min. 30 – max. 265 mm
and thickness min. 10 – max. 30 mm.

Dimensions d1 x s (mm)	Inspection aperture d2 (mm)	Permissible pressure in bar	Dimensions d1 x s (inch)	Inspection aperture d2 (inch)	Permissible pressure in psi
30 x 15	20	200	1.181 x 0.591	0.787	2900
31.6 x 12.75	20	150	1.244 x 0.502	0.787	2175
34 x 17	24	200	1.339 x 0.669	0.945	2900
35 x 7	25	25	1.378 x 0.276	0.984	363
40 x 10	30	40	1.575 x 0.394	1.181	580
40 x 12	30	50	1.575 x 0.472	1.181	725
45 x 10	32	40	1.772 x 0.394	1.260	580
45 x 12	32	50	1.772 x 0.472	1.260	725
50 x 10	35	25	1.969 x 0.394	1.378	363
50 x 12	35	40	1.969 x 0.472	1.378	580
55 x 10	40	25	2.165 x 0.394	1.575	363
60 x 10	45	16	2.362 x 0.394	1.772	232
60 x 12	45	25	2.362 x 0.472	1.772	363
60 x 15	45	40	$2.362 x 0.591	1.772	580
60 x 20	45	95	2.362 x 0.787	1.772	1377
63 x 8	48	8	2.480 x 0.315	1.890	116
63 x 10	48	16	2.480 x 0.394	1.890	232
63 x 12	48	25	2.480 x 0.472	1.890	363
63 x 15	48	40	2.480 x 0.591	1.890	580
65 x 10	50	12	2.559 x 0.394	1.969	174
65 x 15	50	40	2.559 x 0.591	1.969	580
70 x 12	55	16	2.756 x 0.472	2.165	232
70 x 15	55	25	2.756 x 0.591	2.165	363
75 x 12	60	16	2.953 x 0.472	2.362	232
80 x 10	65	10	3.150 x 0.394	2.559	145
80 x 12	65	16	3.150 x 0.472	2.559	232
80 x 15	65	25	3.150 x 0.591	2.559	363
80 x 20	65	40	3.150 x 0.787	2.559	580
90 x 10	70	8	3.543 x 0.394	2.756	116
92 x 10	72	8	3.622 x 0.394	2.835	116
95 x 10	75	6	3.740 x 0.394	2.953	87
95 x 15	75	16	3.740 x 0.591	2.953	232
100 x 10	80	7	3.937 x 0.394	3.150	101
100 x 12	80	10	3.937 x 0.472	3.150	145
100 x 15	80	16	3.937 x 0.591	3.150	232
100 x 20	80	25	3.937 x 0.787	3.150	363
100 x 25	80	40	3.937 x 0.984	3.150	580
110 x 12.5	85	10	4.331 x 0.492	3.346	145
113 x 15	88	10	4.449 x 0.591	3.465	145
115 x 15	90	10	4.528 x 0.591	3.543	145
120 x 15	95	10	4.724 x 0.591	3.740	145
125 x 15	100	10	4.921 x 0.591	3.937	145
125 x 20	100	16	4.921 x 0.787	3.937	232
125 x 25	100	25	4.921 x 0.984	3.937	363
125 x 30	100	40	4.921 x 1.181	3.937	580
130 x 15	105	10	5.118 x 0.591	4.134	145
135 x 25	110	25	5.315 x 0.984	4.331	363
150 x 10	125	2	5.906 x 0.394	4.921	29
150 x 15	125	8	5.906 x 0.591	4.921	116
150 x 20	125	10	5.906 x 0.787	4.921	145
150 x 25	125	16	5.906 x 0.984	4.921	232
150 x 30	125	25	5.906 x 1.181	4.921	363
175 x 20	150	10	6.890 x 0.787	5.906	145
175 x 25	150	16	6.890 x 0.984	5.906	232
175 x 30	150	25	6.890 x 1.181	5.906	363
200 x 20	175	8	7.874 x 0.787	6.890	116
200 x 25	175	10	7.874 x 0.984	6.890	145
200 x 30	175	16	7.874 x 1.181	6.890	232
250 x 20	225	4	9.843 x 0.787	8.858	58
250 x 25	225	8	9.843 x 0.984	8.858	116
250 x 30	225	10	9.843 x 1.181	8.858	145
265 x 30	240	8	10.433 x 1.181	9.449	116

Category: Maxos Tag: Safety Sight