IGEMA Level Gauges and Boiler Controls

IGEMA GmbH (Münster, Germany) builds level gauges for steam boilers and vessels, electronic level control systems, TDS control systems and valves. The company was founded in Aachen in 1919.

LG40-CS and RG200 Reflex Level Gauges

A reflex gauge is a direct level indicator for steam boilers and vessels: the water shows dark and the steam light in the sight opening. LG40-CS, RGI-CS and LGI-CS are rated 32 bar. RG200 handles 200 bar on media without glass attack and comes as a left or right model.

LG40-CS, RGI-CS, LGI-CS: 32 bar
RG200: up to 200 bar
RG200 on water/steam: 35 bar
A120-CS and A140-CS shut-off valves

TG40, TG120 and TG200 Transparent Level Gauges

The illuminated transparent gauge shows the interface between water and steam in the sight opening of a steam generator. The TG range is rated 40, 120 and 200 bar. TG40 is fitted with a DIN 7081 borosilicate glass, LEDSecure Slim IP66 lighting, an A120-CS shut-off valve and an AV250 drain valve.

TG40: 40 bar, IP66 lighting
TG120: 120 bar
TG200: 200 bar, IP67 lighting
Borosilicate glass to DIN 7081

LS and BU Plus Bicolour Level Gauges

In a bicolour gauge the water space is shown green and the steam space red. Type LS is rated 120 bar and BU Plus 200 bar. BU Plus has a body of ASME pressure vessel steel, LED Secure SOL6/8 IP65 lighting, A240 shut-off valves and an AV320 drain valve.

LS: 120 bar, IP67 lighting
BU Plus: 200 bar, IP65 lighting
A130, A150 and A220 valves on LS
AV500, AV520 or AV320 drain

NA7 Magnetic Level Gauges and RBA Float Switches

The NA7 magnetic gauge is an indirect indicator: the float transmits the boiler level 1:1 to the ledge. The range covers 10 to 150 bar; options are an M510-1-60 limit switch and an MRK 4-20 mA primary element. RBA24 and RBA36 float switches serve as level controller or limiter at 80 and 120 bar.

NA7-10 to NA7-150: 10–150 bar
MRK primary element, 4-20 mA
M510-1-60 limit switch
RBA24: 80 bar, M130-KG switch

EWLI-3B, EWLS Electronic Level Gauges and Limiters

EWLI-3B uses a conductive measuring principle and takes up to 32 probes. Its control unit offers 7 freely assignable contacts, an error contact and a 4-20 mA output that drops to 2 mA on error. EWLS handles 1 to 4 probes, and the LW-S limiter on SMLC2 runs regular self-tests.

EWLI-3B: up to 32 probes
EWLS: up to 4 probes, IP66 box
LW-S: SIL3, automatic self-test
EL030 probe 32 bar, EL230 200 bar

TDS Control and Boiler Blow-Down

Boiler water TDS is measured by the EL22 probe inside the boiler, EL18 in the pipeline and EL23 up to 80 bar; 2-point control covers 15 or 32 bar. The ASV2 blow-down valve with MC163 actuator self-adjusts during commissioning. KAV1 R1-N and KAV2 R1-N valves handle bottom blow-down.

EL18, EL22 and EL23 probes
FARB2 controller with limiting
ASV2: MC163 actuator, 230 Vac
KAV2 R1-N: pneumatic, PGM valve

Selecting an IGEMA Level Gauge

The gauge type follows pressure and medium: LG40-CS and RGI-CS reflex gauges are rated 32 bar, TG transparent gauges 40, 120 and 200 bar, and LS and BU Plus bicolour gauges 120 and 200 bar.

For remote indication choose NA7 magnetic gauges with an MRK 4-20 mA primary element or the EWLI-3B electronic gauge with up to 32 probes.

Low water protection uses the LW-S limiter with SMLC2 and EL030 or EL230 probes; TDS control uses EL18, EL22 or EL23 probes with the FARB2 controller and the ASV2 valve.

Configuration and Valves

Level gauges ship with A series shut-off valves and AV series drain valves, a ventilation plug and water level marks. A110-CS shut-off valves have a self-closing ball for automatic shut-off on glass breakage; transparent and bicolour versions carry LEDSecure illumination.

IGEMA and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of IGEMA and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.