SERIES H12

ECONOMICAL ARMORED LEVEL GAUGES – LOW PRESSURE

Style R Reflex
(Was Model 477)

Style T Transparent
(Was Model 486)

Benefits & Features

Maximum protected level gauges with 25mm wide glass
Pressures up to 750 PSIG @ 200°F, Temperatures up to 600°F
Standard gauges rated up to 300 PSIG @ 421°F Saturated steam
Standard Gauges with 1/2” FNPT End Connections (in stock)
Steam Configurated Gauges for over 300 PSIG available in transparent gauges
Optional 3/4” FNPT connections and 1/2” or larger flanged connections available in end, side or back connected configurations
Wetted Parts conform to NACE MR0175 & MR0103
All parts listed in ASTM & ASME B31.3
Carbon Steel Covers are Shrouded to Protect the Glass Edges
All Gages feature a one-piece chamber design, regardless of length

Reflex vs Transparent

Reflex Gauges provide economical level indication using one glass per section. The level of the media in the vessel appears black and the prismatic glass reflects back silver where the liquid is not present. Light is only required in the front of the gauge.
Transparent Gauges utilize two glasses, one on each side of the chamber for direct visual observation of the vessel’s liquid, level, quality, and color. Light is required from the back.

General Differences – Series H12

General Differences – Series H12	Reflex	Transparent
Glasses per section	1	2
Prismatic Glass that reflects back (requires a frontal light source)	Yes	No
Clear Glass to see through (requires a rear light source)	No	Yes
Clear Liquids	Recommended	Yes
Non-clear liquids	Yes	Recommended
Higher non-steam ratings with Reflex glass	No	-
Saturated steam service up to 300 PSIG	Yes	Yes
Saturated steam service above 300 PSIG	No	No

Standard Non-Steam Specifications

Standard Non-Steam Specifications*
		Wetted Materials			Non-Wetted Materials
Style	Gauge Type	Chamber	Glass	Gasket	Cover	Cushions	Fasteners	Non-Steam Pressure Ratings
R	Reflex	Carbon Steel	Tempered Borosilicate	Garlock® IFG-5500	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	Up to 750 PSIG @ 200°F See charts for specific ratings
R	Reflex	316SS	Tempered Borosilicate	Garlock® IFG-5500	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	Up to 750 PSIG @ 200°F See charts for specific ratings
T	Transparent	Carbon Steel	Tempered Borosilicate	Garlock® IFG-5500	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	Up to 750 PSIG @ 200°F See charts for specific ratings
T	Transparent	316SS	Tempered Borosilicate	Garlock® IFG-5500	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	Up to 750 PSIG @ 200°F See charts for specific ratings

*Optional materials are available for cover, glass, gaskets, and fasteners. See matrix or consult factory.

Notes: Flange connections on the gauges or valves derate the entire gauge when rated lower than the gauge.
Gauges over 165Lbs automatically supplied with a gauge support bracket in the center or close to the center of gage.

Standard Steam Specifications

Standard Steam Specifications*
		Wetted Materials				Non-Wetted Materials
Style	Gauge Type	Chamber	Glass	Gasket	Glass Shield	Cover	Cushions	Fasteners	Saturated Steam Pressure Ratings
R	Reflex	Carbon Steel	Tempered Borosilicate	Graphite	n/a	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	All Sizes 300 PSIG @ 421°F
R	Reflex	316SS	Tempered Borosilicate	Graphite	n/a	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	All Sizes 300 PSIG @ 421°F
T	Transparent	Carbon Steel	Tempered Borosilicate	Graphite	Mica V5 Optional	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	All Sizes 300 PSIG @ 421°F
T	Transparent	316SS	Tempered Borosilicate	Graphite	Mica V5 Optional	Carbon Steel (Painted)	Garlock® IFG-5500	Plated Steel	All Sizes 300 PSIG @ 421°F

End Connected Dimensions

Standard Dimensions – End Connected
Section Size	Visible Length		Overall Length		Approximate Weight				Minimum Vessel Centers with 1/2" MNPT Close Nipples (in Inches)
	Visible Length		Overall Length		Reflex		Transparent
	Inches	MM	Inches	MM	Lbs	Kgs	Lbs	Kgs	With Series V11B Valves Rigid Gauge Conn.s*	With Series V11B Valves Union Gauge Conn.s*
111	10.250	260	12.000	305	20	9.1	26	11.8	16.094	18.594
112	11.250	286	13.000	330	20	9.1	29	13.2	17.094	19.594
113	12.250	311	14.000	356	21	9.5	31	14.1	18.094	20.594
115	14.250	362	16.000	406	24	10.9	35	15.9	20.094	22.594
118	17.250	438	19.000	483	29	13.2	42	19.1	23.094	25.594
120	19.250	489	21.000	533	32	14.5	46	20.9	25.094	27.594
211	22.375	568	24.125	613	36	16.4	53	24.1	28.188	30.688
212	24.375	619	26.125	664	39	17.7	58	26.4	30.188	32.688
213	26.375	670	28.125	714	43	19.5	62	28.2	32.188	34.688
215	30.375	772	32.125	816	49	22.3	71	32.3	36.188	38.688
218	36.375	924	38.125	968	57	25.9	84	38.2	42.188	44.688
220	40.375	1026	42.125	1070	64	29.1	93	42.3	46.188	48.688
311	34.500	876	36.250	921	54	24.5	80	36.4	40.281	42.781
312	37.500	953	39.250	997	59	26.8	87	39.5	43.281	45.781
313	40.500	1029	42.250	1073	64	29.1	93	42.3	46.281	48.781
315	46.500	1181	48.250	1226	73	33.2	107	48.6	52.281	54.781
318	55.500	1410	57.250	1454	86	39.1	126	57.3	61.281	63.781
320	61.500	1562	63.250	1607	96	43.6	140	63.6	67.281	69.781
411	46.500	1181	48.250	1226	72	32.7	106	48.2	52.375	54.875
412	50.500	1283	52.250	1327	79	35.9	116	52.7	56.375	58.875
413	54.500	1384	56.250	1429	86	39.1	125	56.8	60.375	62.875
415	62.500	1588	64.250	1632	98	44.5	143	65.0	68.375	70.875
418	74.500	1892	76.250	1937	115	52.3	168	76.4	80.375	82.875
420	82.500	2096	84.250	2140	128	58.2	186	84.5	88.375	90.875
511	58.625	1489	60.375	1534	91	41.4	133	60.5	64.469	66.969
512	63.625	1616	65.375	1661	99	45.0	145	65.9	69.469	71.969
513	68.625	1743	70.375	1788	107	48.6	156	70.9	74.469	76.969
515	78.625	1997	80.375	2042	122	55.5	179	81.4	84.469	86.969
518	93.625	2378	95.375	2423	143	65.0	210	95.5	99.469	101.969
520	103.625	2632	105.375	2677	160	72.7	233	105.9	109.469	111.969
611	70.750	1797	72.500	1842	109	49.5	160	72.7	76.563	79.063
612	76.750	1949	78.500	1994	119	54.1	173	78.6	82.563	85.063
613	82.750	2102	84.500	2146	129	58.6	187	85.0	88.563	91.063
615	94.750	2407	96.500	2451	147	66.8	215	97.7	100.563	103.063
618	112.750	2864	114.500	2908	172	78.2	252	114.5	118.563	121.063
620	124.750	3169	126.500	3213	192	87.3	280	127.3	130.563	133.063

*Minimum centers for Stainless Steel gauges are 1/4” longer.

Options

Reflex gauges with in 3/4” FNPT, 1/2” and larger flanged connections (contact factory)
Transparent gauges with in 3/4” FNPT, 1/2” and larger flanged connections (contact factory)
See Matrix for standard options

Application Notes:

Saturated Steam Service: See Ratings charts or contact factory
Potable Water: Carbon Steel wetted materials are not suitable for potable water, 316SS chambers are suitable
Vacuum Service: Suitable
Gaseous Service: Not acceptable
Compatibility: Before ordering, verify all materials are compatible with the service media(s), intermittently used cleaners, the environment, and cleaning processes in conjunction with the temperatures and pressures of the application(s) and future applications. John C. Ernst Co. does not make chemical compatibility recommendations. Compatibility is the responsibility of the user and/or specifying party.

Warning WARNING: This product can expose you to certain chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov

Replacement Parts

Please contact our Sales Dept. sales@ernstinstruments.com or call 888-943-5000

Model Number Matrix