BOILER MONITORING

Reflex level gauge LG40

Application and function

The reflex level gauge is a direct level gauge which can be used for steam boilers and containers. In the sight opening, the water level is indicated dark and the steam light.

Technical basic equipment

• Body material: carbon steel
• Sight lengths see table
• As left sided (mapped) or right sided model
• With drain valve and ventilation plug
• Shutoff valves type A110, A120 or A210
• Drain valve type AV500

Transparent level gauge type glass-mica

One sight opening; lateral connection; protective LED-light tube

Application and function

The transparent level gauge is adirect water level gauge with illumination which can be used for steamgenerators.

In the sight opening, the waterlevel is visible at the interface between water level and steam.

Technical basic equipment

• Body material carbon steel
• As left sided (mapped) or eright sided model
• Sight lengths see table
• With drain valve and ventilation plug
• Illumination device IP67
• Shutoff valve type A130, A150 and A220
• Drain valve type AV500, AV 520

Magnetic level gauge NA7-50

Application and function

The magnetic level gauge is anindirect level gauge. The boiler level is transmitted analogously 1:1 to the indicating ledge via the float.

Technical basic equipment

• Fluid side stainless steel (1.4571; SA312 Gr. TP316L)
• Indicating ledge AL_-G (D-06-D-16311-0)
• Drain plug
• Ventilation plug

Remote level gauge type G With protective tube light LED Application and function

The remote level gauge type G can beused for every steam generator according to TRD 401 except continuous steamgenerators.

The geodetic pressure difference oftwo water columns is transferred to a blue separating liquid in theremote level gauge. This liquid is insoluble in water and non-toxic.

The height of the indicating liquidcolumn indicates the water level in the steam drum on a scale of 1:1 or on areduced scale.

The product corresponds to the PEDdirective 97/23/EEC art. 3 par. 3 SEP (Sound Engineering Practice).

Applied rules as per TRD/AD2000 orASME-Boilers.

Technical basic equipment

• Body material stainless steel
• Sight length see table
• Illumination device IP67
• Shutoff valves type HA300, HA310 and HA320
• Indicator valves type AF410 and 411

Float switch type RBA34

Application and function

The float switch can be used as water level controller or limiter for steam generators.

Technical basic equipment

• Material according to DIN or ASME
• Protection as per DIN VDE 0470: IP54
• Process connection: flanges as per DIN or ANSI
• Magnetic switch type M130-K (D-07-D-16324-0)
• Cable gland according to DIN EN 50262: M20x1,5
• Drain plug G ½

Magnetic switch type M130-K.

Application and function

The magnetic switch functions as controller or limiter in float switches.At operation with inductive charges (e.g. contactor coil), we suggest to switch a varistor (e. g. 0,1 mF/100 Ohm), adapted to the operating voltage, in parallel with the contact. Use acetic acid-free silicon cable in the internal part of switch housing.

Protective LED tube light

Application

This LED lighting device ispart of the level indicator product range. The water level in a steam and waterroom is made visible by backlighting. The strong, directed light of Igema LEDlights is focused on the viewing area of the level indicators. This guaranteesoptimum illumination of the steam and water room with minimum sideways dazzle.

Areas of use are:

• Transparent indicators of glass and glass mica types
• Transparent indicators of mica and black and white mica types
• Type G remote indicators

Drain valve type AV 500, 505, 520, 525

Application and function

The drain valve is used to drain instruments or to drain fillings of instruments. The area of application comprises with the entire product range of level gauges and float switches.

Technical basic equipment

• Inlet: male thread G ½
• Outlet: cutting ring connection ø 12 mm (DIN 2353-DS12)
• Body material: carbon steel as per DIN or ASME, (AV500, AV520) or stainless steel (AV505, AV525)
• Inner parts of valve: stainless steel,
• Handwheel carbon steel (up to PS = 32 bar)
  resp. aluminium up to PS = 200 bar

Shutoff valve type A210 / A220

Application and function

The area of application comprises the entire product range of reflex, transparent and bicolour level gauges. They are used to shut off the level gauge.

Technical basic equipment

• Body material carbon steel, material as per DIN or ASME
• Inner parts of valve stainless steel
• Handwheel and handlever aluminium
• Process connection PS = 32 bar: DN20 or DN25, PS = 80 bar: DN 25
• Self-closing ball for automatic shutoff in case of glass or mica break
• Version with backseat to release gland packing

Blow down valve type KAVx R1-N

Application and function

The valve is used to blow down and / or to drain steam boilers. The conception of the valve enables a fast opening necessary for the blowing down. This fast opening causes a suction in the boiler whereby deposits and possible solids are flushed out of the boiler.

Technical basic equipment

• KAV1 R1-N Blow-down valve with handlever.; A later equipment with pneumatic actuator is possible without problems.
• KAV2 R1-N Blow-down valve with pneumatic actuator for automatic blowing down in connection with the program-controlled IGEMA magnetic valve type PGM
• Construction as globe valve with flange connection or welding end according to DIN
• Quick closing mechanism for fast closing and opening
• Adjustable stuffing box
• Clamp-in valve seat
• Possibility to lock the valve manually in open position
• Possibility to operate the pneumatic actuator with the control media air or water
• Materials:
  
  • pressure holding parts: steel for high-temperature service
  • Spindle, seat and cone: stainless steel
  • Yoke: carbon steel
  • Lever: carbon steel

Level probe type EL030

Application and function

The level probe EL030 in connection with the controller SMLC1 is a self-monitoring low water level limiter of special construction as per DIN EN 50156-1 and the German rule "Wasserstand 100".

Level probe type EL040

Application and function

The level probe EL040 in connection with the controller SMHC1 is a high water level limiter of spezial construction as per DIN EN 50156-1 and the German rule

Wasserstand 100

Level probe type EL041

Application and function

The level probe type EL041 serves as primary element for the following controllers:

LMC1 Low water level limiter

DHR1 2-point water level controller with HWL-alarm

DLR1 2-point water level controller with LWL-alarm

DS1 LWL and HWL signaling

Technical basic equipment

Mechanical connection : G ½  (SW27)

Electrical connection : Plug connection with screw terminals, traction relief

Material

Probe housing :stainless steel

Probe rod : stainless steel

Probe extension : stainless steel

Insulator : PTFE

Socket : Polyamid

Sealing ring : Soft iron

Level probe type EL19-2

Application and function

The level probe EL19-2 in connection with the controller SMLC1 is a self-monitoring low water level limiter of spezial construction as per DIN EN 50156-1 and the German rule "Wasserstand 100".

Technical basic equipment

Mechanical connection G ½  (SW27)

Electrical connection : Plug connection with screw terminals, traction relief

Material

Probe housing : stainless steel

Probe rod : stainless steel

Probe extension : stainless steel

Insulator: Ceramic

Socket : Polyamid

Sealing ring : Soft iron

Conductivity probe type EL22

 Application and function

The level probe EL 22 in connection with the controller FAR1and a desalting valve is a continuous desalting regulation.
In connection with the controller FLB1 the probes serves as conductivity limitation

Technical basic equipment

Mechanical connection : G ½  (SW27) with T-connection for mounting on boiler

Electrical connection : Plug connection with screw terminals, traction relief

Material

Probe housing : stainless steel

Probe rod : stainless steel

Insulator :PTFE

Socket : Polyamid

Sealing ring : Soft iron

T-connection : 1.0460

Level probe type EL21-2

Application and function

The level probe EL21- in connection with the controller SMHC1 is a high water level limiter of spezial construction as per DIN EN 50156-1 and the German rule Wasserstand 100.

Technical basic equipment

Mechanical connection : G ½ (SW27)

Electrical connection : Plug connection with screw terminals, traction relief : Material

Probe housing: stainless steel

Probe rod : stainless steel

Probe extension : stainless steel

Insulator: Ceramic

Socket : Polyamid

Sealing ring: Soft iron

Level probe type EL4-1

Application and function

The level probe type EL4-1 serves as primary element for the following controllers

LMC1 : Low water level limiter

DHR1: 2-point water level controller with HWL-alarm

DLR1 : 2-point water level controller with LWL-alarm

DS1: LWL and HWL signaling

Technical basic equipment

Mechanical connection : G ½  (SW27)

Electrical connection : Plug connection with screw terminals, traction relief

Material

Probe housing :stainless steel

Probe rod : stainless steel

Probe extension: stainless steel

Insulator : Ceramic

Socket : Polyamid

Sealing ring : Soft iron

Multiple level probe type EL912

Application and function

The level probe type EL912 serves as primary element for the following controllers

LMC1 : Low water level limiter

DHR1 : 2-point water level controller with HWL-alarm

DLR1 : 2-point water level controller with LWL-alarm

DS1 : LWL and HWL signaling

Technical basic equipment

Two probe rods

Mechanical connection : G 1  (SW41)

Electrical connection : Plug connection with screw terminals, traction relief

Material

Probe housing : stainless steel

Probe rod : stainless steel

Insulator : PTFE

Socket : Polyamid

Sealing ring : Soft iron

TDS limiter type FLB1

Application and function

The TDS limiter FLB1 for continuous control of the boiler water electrical conductivity. The measurement of electrical conductivity is done by a measuring cell consisting of the TDS probe and the chamber wall of protection tube.

The product according to PED directive 97/23/EEC annex VII (Module B+D, category II) has the CE-mark no. 0035 of the notified body.

Applied rules as per TRD, AD2000 and "Wasserstand 100".

Function FLB1

The controller continuously measures, at the electrode rod in the measuring cell, the electrical conductivity of the boiler water which is closely related to the level of TDS.

This measured value is compared with the set point of controller. If it is higher or equal than the set point, the controller relay is de‑energised and will go to alarm to shut down the burner. The indicator lamp "STÖRUNG" (alarm) lights. If the measured value drops below 78 % of set point, the controller relay is energised. The indicator lamp "STÖRUNG" does not longer light.

A performance check can be done by pressing and holding of the button "TEST K" (limit value).

In case of failure of the system, e.g. break of mains supply or short circuit, the controller goes in position of higher or equal value than the set point.

The indicator lamp "UB" shows that the power supply is on.

Technical basic equipment

• FLB1 is delivered in a plastic plug-in housing for installation in control panels
• Fixation on standard rail 35 mm according to DIN EN 50022 or directly screwed to chassis plate

Desalting controller type FAR1

Application and function

The IGEMA liquid desalting controller type FAR1 is used for continuous desalting of liquids in connection with a valve.

A measuring cell that consists of a special conductivity probe and the cell wall (protection tube or block flange) detects the conductivity.

The product according to PED directive 97/23/EEC annex VII (Module B+D, category II) has the CE-mark no. 0035 of the notified body.

High water level limiter SMHC1

Application and function

The SMHC1 is a failsafe high water level limiter for use with the level probe type EL 040 or EL 21-2.

It was developed according to DIN EN 50156-1 and the German rule "Wasserstand 100".

The integrated Self-Monitoring-Control System (SMC) is capable of detecting every failure in the moment of its occurrence what will result in an immediate power down of the safety contact and a subsequent burner cut-off.

The product according to PED directive 97/23/EEC annex VII (Module B+D, category II) has the CE-mark no. 0035 of the notified body.

Applied rules as per TRD, AD2000 and "Wasserstand 100".

Function SMHC1

The green LED "UB"  is lit when the SMHC1 is connected to the mains supply and it indicates the general function of the limiter. Two special processes of failure detection are running continuously. The first process, checking the proper behaviour of the output circuit, which is responsible for the safety contacts, is performed every 40 ms. The second process, simulating a low water level, is performed every 120 seconds and additionally indicated by the yellow LED "TEST" being lit.

This main test takes about 0.8 seconds. A successful test is indicated by a short flash of the red LED "STÖRUNG". In the case of an un­suc­cess­ful test the acknowledging flash is missing and the next main test will performed already within the next 30 seconds.

After 30 repetitions of this fast test cycle with unsuccessful results, the safety contacts will be powered down and a burner cut-off will be forced. The SMHC1 has an internal fuse (4 A/T) to protect the relay's contacts.

Under normal conditions, only the green LED "UB" is lit permanently  and the yellow LED "TEST" is lit every 120 se­conds for about 0.8 seconds followed by a short flash of the red LED "STÖRUNG". The safety contact is kept energised to maintain the burner protection circuit and the contact "Indication" is open. If the limiter has either detected a failure or the probe's tip is exposed for more than one second, the LED "STÖRUNG" is lit and the contact "Indication" is closed. After a total adjustable delay of 4, 8, 12, 16 seconds, the relays of the safety contact are deactivated and the burner is cut-off. The time delay is preset on 4 seconds.

A circuit to keep the burner from restart is not implemented in the SMHC1 and shall be installed by the customer.

Technical basic equipment

• SMLC1 is delivered in a plastic plug-in housing for installation in control panels
• Fixation on standard rail 35 mm according to DIN EN 50022 or directly screwed to chassis plate

Self-monitoring low water level limiter SMLC1 Application and function

The SMLC1 is a failsave self-monitoring low water level limiter for use with the level probe type EL 030 resp. EL 19-2 or with the multiple probe MS015-A, MS015-B and EL963-..

It was developed according to DIN EN 50156-1 and the German rule "Wasserstand 100".

The integrated Self-Monitoring-Control System (SMC) is capable of detecting every failure in the moment of its occurrence what will result in an immediate power down of the safety contact and a subsequent burner cut-off.

The product according to PED directive 97/23/EEC annex VII (Module B+D, category IV) has the CE-mark no. 0035 of the notified body.

Applied rules as per TRD, AD2000 and "Wasserstand 100".

Function SMLC1

The green LED "UB" is lit when the SMLC1 is connected to the mains and it indicates the general function of the limiter.

Two special processes of failure detection are running conti­nu­ously. The first process, checking the proper behaviour of the output circuit, which is responsible for the safety contacts, is performed every 40 ms. The second process, simulating a low water level, is performed every 120 seconds and additionally indicated by the yellow LED "TEST" being lit. This main-test takes about 0,8 seconds.

A successful test  is indicated by a short flash of the red LED "STÖRUNG".

In the case of an unsuccessful test the acknowledge-flash is missing and the next main-test will performed already within the next 30 seconds. After 30 repetitions of this fast test cycle with unsuccessful results the safety contacts will be powered down and a burner cut-off will be forced.

To protect the relay's contacts, the SMLC1 got an internal fuse (4 A/T).

Under normal conditions, only the green LED "UB" is lit permanently and the yellow LED "TEST" is lit every 120 se­conds for about 0.8 seconds followed by a short flash of the red LED "STÖRUNG". The safety contact is kept energised to maintain the burner protection circuit and the contact "Indication" is open.

If the limiter has either detected a failure or the probe's tip is exposed for more than one second, the LED "STÖRUNG" is lit and the contact "Indication" is closed. After a total adjustable delay of 4, 8, 12, 16 seconds, the relays of the safety contact are deactivated and the burner is cut-off.

The time delay is preset on 4 seconds. A circuit to keep the burner from restart is not implemented in the SMLC1 and shall be installed by the customer.