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Brand: Mobrey
Mobrey MHLSC Horizontal Level Switch Chambers for Float Switches
Description
Horizontal float chambers for external mounting of Mobrey magnetic level switches
The Mobrey MHLSC datasheet covers horizontal level switch chambers, also called float chambers, used to mount a Mobrey magnetic level switch externally on a tank or pressure vessel. They suit installations where space inside the vessel is restricted, or where the switch must be isolated for routine maintenance while the plant stays in operation. A wide range of cast or fabricated chambers is offered, with process connections at top and bottom or side and side that can be flanged, screwed or butt welded.
Technical specifications
| Parameter | Specification |
|---|---|
| Product | Horizontal level switch chambers for float switches (datasheet TDS-MHLSC Rev. B, December 2022) |
| Construction | Fabricated chambers, or cast chambers 201 (with drainage) and 802 (without drainage) |
| Fabricated chamber materials | Carbon steel as standard; 304, 321 and 316 stainless steel, Alloy 825, Alloy 400, duplex and other materials on request |
| Cast chamber material | Cast iron EN 1561 grade EN GJL 250 |
| Cast chamber rating | 13 bar at 210 C; minimum working temperature 0 C; screwed 1 inch BSP or EN 1092-1 DN20 PN16 |
| Fabricated chamber maximum temperature | 400 C (carbon steel flange codes in Table 1) |
| Minimum temperature | Fabricated carbon steel -7 C; cast iron 0 C; LT50 or stainless steel for lower service |
| Finish | Black stove paint as standard; two-pack epoxy at extra cost; paint to customer specification |
| Testing | Every chamber is pressure tested at the relevant connection flange test pressure; customers may witness |
| Quality records | Welding procedures to EN 15614-1 and ASME IX; welders to EN ISO 9606; material certification EN 10204 Type 3.1 |
| Optional inspection | NDT to CSWIP and ASNT: radiographic, ultrasonic, magnetic particle, dye penetrant |
| Sour service | Chambers may be supplied in accordance with NACE recommendations |
| Directive | CE marked, Pressure Equipment Directive 2014/68/EU, module H |
Fabricated chamber ordering codes
| Code | Switch flange | Max pressure at 20 C | Max temp. |
|---|---|---|---|
| 144C | Carbon steel, ASME B16.5 3 inch 150 RF | 19.6 bar | 400 C |
| 145C | Carbon steel, ASME B16.5 3 inch 300 RF | 51 bar | 400 C |
| 148C | Carbon steel, Mobrey A flange | 18 bar | 400 C |
| 151C | Carbon steel, Mobrey G flange | 21 bar | 400 C |
| 305C | Carbon steel, EN 1092-1 DN80 PN63 | 63 bar | 400 C |
| 306C | Carbon steel, EN 1092-1 DN65 PN40 | 40 bar | 400 C |
| 307C | Carbon steel, ASME B16.5 3 inch 600 RF | 102 bar | 400 C |
| 308C | Carbon steel, ASME B16.5 3 inch 900 RF | 153 bar | 400 C |
A second table defines the connection style from 0 to 9, for example side and top or side and bottom flanged (1), side and side flanged (2), top and bottom flanged (5), top and bottom stub pipe (7) and top and bottom threadolet or socket (8), with or without a three-quarter inch flanged or threaded vent and drain. A third table lists the process connection size and rating from a 1 inch sockolet or NPT thread through 1 to 2 inch ASME weld-neck flanges and EN 1092-1 DN25 to DN50 flanges.
Selection notes
The datasheet states that the pressure and temperature ratings of the switch and the chamber are not always compatible, so the lower rating governs the selection. Chambers are supplied with the switch loosely assembled for transit, and flange bolts must be tightened on site before commissioning. Nominal dimensions in the datasheet are for reference only and must be certified on order.
Documents and quotation
To quote, send the switch model, process connection size and rating, connection style, material, design pressure and temperature, and any NDT, NACE or paint requirement. This page covers the chamber; the matching Mobrey float switch must be named separately. Delta Mobrey publishes the switch codes in its magnetic level switch datasheets.
The manufacturer document is attached to this page and listed below. Seven Star LLC is an independent supplier in Muscat and can quote against the model code, quantity and delivery location. Browse more instruments in Level Instrumentation, or see the Mobrey brand page.
Datasheets & Documents
- Datasheet Mobrey MHLSC horizontal level switch chambers datasheet TDS-MHLSC Rev. B (December 2022) Download
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About brand
Mobrey is a process instrumentation brand of Delta Mobrey Ltd, headquartered in Camberley, Surrey, United Kingdom. Its range centres on level measurement, with magnetic float and displacer level switches, displacer and hydrostatic level transmitters, ultrasonic transmitters and solids level switches, together with vane flow switches for air ducts. Seven Star LLC supplies these instruments in Oman on inquiry.
Level and flow instruments listed
The models on this page include the MLT100 HART displacer level transmitter, magnetic horizontal and vertical float level switch chambers, the 9710 submersible hydrostatic transmitter, DMSP ultrasonic transmitters, PLS paddle and DMS vibrating fork switches for solids, and the 131 vane operated flow switch. Datasheets are issued under the Delta Mobrey name.
Ordering level and flow instruments
Send the model code from the nameplate or datasheet, process connection, pressure and temperature, medium and hazardous-area requirement. The datasheets describe how the full model code is built, so the exact configuration can be confirmed before an offer is issued.
Related products
Frequently Asked Questions
What is the Mobrey MHLSC?
It is the datasheet code for horizontal float chambers that allow a Mobrey magnetic level switch to be mounted outside a tank or vessel.
Which chamber materials are offered?
Carbon steel as standard, with 304, 321 and 316 stainless steel, Alloy 825, Alloy 400, duplex and other materials on request, plus cast iron chambers.
How are the chambers tested?
Every chamber is pressure tested at the relevant connection flange test pressure, and customers may witness testing.
What limits the working pressure?
The lower of the chamber rating and the switch rating, as stated in the datasheet.
Is NACE service possible?
The datasheet states chambers may be supplied in accordance with NACE recommendations for sour service.
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