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優(yōu)價銷售:

EGE    SC440/1-A4-GSP    傳感器
EGE    SC 440/1-A4-GSP    傳感器
HOHNER    C01630F006 100 12 (9411B)    接頭
HOHNER    SP1721(pulse 2500)    編碼器
suco    0159-43214-1-001    傳感器
suco    0159-43214-1-001    傳感器
suco    0159-43214-1-001    傳感器
suco    0159-43214-1-001    傳感器
suco    0159-43214-1-001    開關(guān)
B&R    8AC110.60-1    通訊模塊
B&R    8AC110.60-1    通訊模塊
B&R Industrie-Elektronik GmbH    8V1090.00-2    伺服器
B&R Industrie-Elektronik GmbH    8V1090.00-2    伺服器
B&R Industrie-Elektronik GmbH    8V1090.00-2    伺服驅(qū)動
Leuze    Nr：50040820    反射板
Leuze    Nr：50115116    光電開關(guān)
Leuze    Nr：50115197    安裝支架
Honsberg    FF-015RMS-125    傳感器
balluff    BNS 819-FR-60-101-FE    限位開關(guān)
Honsberg    MR-020GM040-93    開關(guān)
Honsberg    RRI-025GVQ080V10KPS-10    計
WENGLOR    HN70PA3    光電傳感器
Woerner    VPB-B/18 NR:S2055074    油分配器
Conec AG    PD 210- 1K04B160MB (shaft length 16mm)    電位器
HOHNER    HWI80S-1032R541-1000    編碼器
HOHNER    Nr. 54    接頭

EGE    IGMF 010 GSP    接近開關(guān)
EGE    IK 030 GSP    接近開關(guān)
EGE    IGMF30262    接近開關(guān)
EGE    IGMF 015 GOP s-nr: P30715    感應(yīng)傳感器
EGE    IGMT 30291    接近開關(guān)
EGE    SN450/1-A4-GR    監(jiān)控器
EGE    Flow sensor SN10383, 24VDC    監(jiān)控器
EGE    SDN 10937    計
EGE    SLW 4-5    5米電纜(帶彎接頭)
EGE    SDN 504 GA    傳感器
EGE    IGMF 005 GSP P30705    開關(guān)
EGE    IGMF 005 GOP P30706    開關(guān)
EGE    SDN 510 GSP-VA P11272    傳感器
EGE    IGMF 30144    開關(guān)
EGE    IGMF 005 GSP P30705    感應(yīng)傳感器
EGE    SDN10831    傳感器
EGE    SC440/1-A4-GSP    傳感器
EGE    SDN 503 GSP    傳感器
EGE    igmf 30268    接近開關(guān)
EGE    STK 412 S-A4,Id-No.P10404    監(jiān)控器
EGE    SKZ-400-GR DC20~28V,Id-No.P10503    監(jiān)測放大器
EGE    SC440/6-A4-GSP    傳感器
EGE    SDN 510 GSP-VA P11272    傳感器
EGE    IGMF 30144    開關(guān)
EGE    IGMF 30144    開關(guān)
EGE    IGMF 005 GSP P30705    接近開關(guān)
EGE    IGMF 005 GSP P30705    接近開關(guān)
EGE    SDN10831    傳感器
EGE    SC440/1-A4-GSP    傳感器
EGE    SDN 503 GSP    傳感器
EGE    igmf 30268    接近開關(guān)
EGE    STK 412 S-A4,Id-No.P10404    監(jiān)控器
EGE    SKZ-400-GR DC20~28V,Id-No.P10503    監(jiān)測放大器
EGE    SC440/6-A4-GSP    傳感器
EGE    STK 421 S-A4    計
EGE    SKM 420 GR    計
EGE    SDN 504 GSP    開關(guān)
EGE    P10530    計
EGE    IDU 080 GSOP P31264    隔離器
EGE    IGMU 015 GSOP P31263    隔離器
EGE    SDN 510 GSP    計
EGE    P11250 SDN 510 GA    接近開關(guān)
EGE    IGM30120    接近開關(guān)
EGE    SKM420GR    計
EGE    SN 450/2-A4-WR1,no:P11079    式計
EGE    SN 450/1-A4-GR 24VDC    計
EGE    SC 440-A4-GSP Nr.P10521    開關(guān)
EGE    IGMF 010 GSP    開關(guān)
EGE    IGMF 005 GSP 24VDC    開關(guān)
EGE    IGMF 005 GOP 10-55VDC    開關(guān)
EGE    IGMF 005 GSP    開關(guān)
EGE    IGMF 015 GOP    開關(guān)
EGE    IGMF 005 GOP 10-55VDC    開關(guān)
EGE    IGMF 010 GSP    傳感器
EGE    KGFG014NAM /10 (10m cable)    傳感器
EGE    IGMF 015 GSOP    接近開關(guān)
EGE    IGMF 005 GOP    接近開關(guān)
EGE    IGMF 005 GOP 10-55VD s-nr:30706    編碼器
EGE    IGMF 005 GOP 10-55VD s-nr:30706    編碼器
EGE    SLG 3-2    插座
EGE    SLG 3-2    插座
EGE    SKM 420 GR    傳感器
EGE    STK 421 S-A4    傳感器
EGE    P30701/10METER    傳感器
EGE    P30702/5METER    傳感器
EGE    SC440/1-A4-GSP    開關(guān)
EGE    SC440/1-A4-GSP    計
EGE    SLW 3-2, NO.Z01078    接頭
EGE    SC 440/1-A4-GSP    計
EGE    IGMF30262    接近開關(guān)
EGE    SDN510GA    計
EGE    LDN 510 GR    開關(guān)
EGE    SDN10831    開關(guān)
EGE    SC440/1-A4-GSP    開關(guān)
EGE    STK 412 S-A4 Nr.P10404    傳感器
EGE    SC440/1-A4-GSP    計
EGE    IGMF30262    接近開關(guān)
EGE    IGMF 30267    接近開關(guān)
EGE    SDN10831    溫度檢測器
EGE    SC440/1-A4-GSP    傳感器
EGE    LG 518 GSP    開關(guān)
EGE    IGMF005GSP P30705    開關(guān)
EGE    SC440/1-A4-GSP    計
EGE    IGMF005GOP (with 5M cable)    傳感器
EGE    IGMF005GSP (with 5M cable)    傳感器
EGE    SDN10831    開關(guān)
EGE    S30067    感應(yīng)傳感器
EGE    IGMH 015 GSP    接近開關(guān)
EGE    P10521 SC 440-A4 GSP    傳感器
EGE    Typ:IGM 30069 Art.Nr：S30069    傳感器
EGE    SC440/1-A4-GSP    開關(guān)
EGE    IGMF 30174    接近開關(guān)
EGE    LG 518 GSP    傳感器
EGE    STS212 K    傳感器
EGE    IGMF 005 GOP    傳感器
EGE    IDT160 GSP/10+Silikon 305    接近開關(guān)
EGE    LNZ 450 GR-S ID:P11105    計
EGE    P31161    接近開關(guān)
EGE    IGMF 008 GOP with 10m cable 3x0.34 m㎡ （P30709/10M）    計
EGE    P31187 IGEX22 02 GSPU    傳感器
EGE    KGFG 014 NAM/10    傳感器
EGE    IGMF 005 GOP    傳感器
EGE    IGMF 005 GSP    傳感器
EGE    IGMF 005 GSOP    傳感器
EGE    IGMF 02 GSP    傳感器
EGE    SLW 4-2 Z00446    電纜
EGE    SN 10628    開關(guān)
EGE    SDN 510 GSP    計
EGE    STK421 S-A4    計
EGE    STK 421 S-A4, P10410    傳感器
EGE    SKZ 400 GR, P10503    傳感器
EGE    STS 215 S    計
EGE    DN 752 GPP-16    計
EGE    SKZ 400 GR    傳感器
EGE    SDN 510 GSP    傳感器
EGE    P31161    接近開關(guān)
EGE    IGMH 015 GSP    接近開關(guān)
EGE    INT100-S180K , Nr : P31103    接近開關(guān)
EGE    IGMF 005 GOP/10,with 10m cable 3x0.34 m㎡    計
EGE    SC440/1-A4-GSP    計
EGE    IGMF 30174    接近開關(guān)
EGE    EGE SC 440-A4-GSP 400MA    傳感器
EGE    IGFW 30382    接近開關(guān)
EGE    IGMU 30404    接近開關(guān)
EGE    SDN 515 GSP, P11284    傳感器
EGE    IGMF 008 GOP with 10m cable 3x0.34 m㎡ （P30709/10M）    計
EGE    P10521 SC 440-A4-GSP    傳感器
EGE    TFGS 126 Ex-L200,ID-NR：P21194    傳感器
EGE    IGMF 005 GSP/10，with 10m cable 3x0.34 m㎡    傳感器
EGE    INKT 30197,ID-NR：S30197    開關(guān)
EGE    SC 440/1-A4-GSP    傳感器
EGE    STK 421 S-A4    計
EGE    SDN 510 GSP    傳感器
EGE    SLW 3-2, NO.Z01078    接頭及電纜
EGE    P31161    接近開關(guān)
EGE    SC440/1-A4-GSP    傳感器
EGE    LNZ 450 GR-S ID:P11105    計
EGE    SDN 510 GSP    傳感器
EGE    LLKS-500-BE    電纜
EGE    SDN 10831    傳感器
EGE    STK 412 S-A4 Nr.P10404    傳感器
EGE    LG 518 GSP    開關(guān)
EGE    ST512KH    隔離放大器
EGE    P10708 SZA 400 Ex-24    隔離放大器
EGE    SLG 3-2    連接電纜（含接頭）
EGE    SC440/1-A4-GSP    開關(guān)
EGE    SC440/1-A4-GSP    開關(guān)
EGE    INT 020-S200K    位移傳感器
EGE    IKM 120 GPP    位移傳感器
EGE    INT 020-S200K    位移傳感器
EGE    IKM 120 GPP    位移傳感器
EGE    SC 440/2-A4-GSP    開關(guān)
EGE    SC 440/2-A4-GSP    開關(guān)
EGE-Elektronik    IGMF 05 GSP P30701    傳感器
EGE-Elektronik    KFC 20108 NR.S20108    接近開關(guān)
EGE-Elektronik    P10525 SC 440/2 GSP    開關(guān)
EGE-Elektronik    SC 440-A4-GSP    計
EGE-Elektronik    SC 440-A4-GSP    計
EGE-ELEKTRONIK GMBH    LLKS-300-BE    開關(guān)
EGE-Elektronik Spezial-Sensoren GmbH    LZN 10645    計

Ex-classified

Flowcontroller and level controller for application in explosive and hazardous areas. Inductive NAMUR switches.

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Accessories

Plug connector, cable, assembly and installation equipment, adaptor.

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Product search

News Items

New amplifier for flow controllers

SDNC series from EGE

Precisely measure fill level of aggressive liquids

Press Releases

EGE’s compact flow controllers for micro pulses monitor oil dosages

Reliable temperature monitoring:
EGE sensors for hot gases up to 1,000 °C

Flow

EGE offers thermodynamic flow controllers without moveable parts, which means they are robust and resistant to soiling. Controllers for fluids such as water, glycol mixtures or chemicals are as much part of the product range as sensors for gases such as air and carbon dioxide. Intrinsically safe sensors based on ATEX for explosive and hazardous areas are also available. Additional variations consist of high temperature sensors up to 160 °C, special sensors made from such materials as Hasloy, Monel, titanium and tantalum with high resistance to chemicals, and programmable flow sensors with digital displays. The flow controllers are either screwed into the side of the pipe or added to the line itself in the form of inline sensors.

Function »
Probes »
Amplifiers and compact devices »
Terminology »
Setting instructions »
Inline-Flow monitoring »
Use in hazardous areas »

Product finder

Fluid controllers

The thermal flow controllers by EGE can be used wherever flows have to be monitored. The standard one-piece sensors are made from the very durable V4a stainless steel (DIN 1.4571).  For especially aggressive fluids, EGE manufactures sensors made from special materials such as bronze, Hasloy, titanium or even PTFE. EGE flow controllers are reliable units for the automation industry, chemical industry, and wherever flows have to be monitored in a safe, robust and low-maintenance manner.
 

Brochure Flow Sensors

Air flow controllers

EGE airflow controllers are defined by their quick response and reliable function. The applied function principle does not require any moveable parts for the airflow controllers, which is why they well suited for use in aggressive environments.  Airflow controllers are available for flows from 0.2 m/s to 25 m/s.
 

Brochure Flow Sensors

Level controller

Level controllers without moveable parts are available in various versions and are extremely resistant to soiling. Capacitive level controllers are available for gases to -200 °C as well as hot glue up to +230 °C. PTFE and PEEK are here the preferred materials because they prevent adhesions. Opto fill sensors with glass or PSU tip do not require a medium adjustment and are simply added top the tank. These sensors are also available as explosion-proof units in accordance with ATEX. Ultrassonic sensors, pressure controllers or the capacitive high-temperature measuring probe KFA continuously monitor and log fill levels.

Application notes »
Instructions for mounting »
Glossary »
 

Brochure Level Sensors

Inductive proximity switches

EGE offers special inductive proximity switches for special applications. Focus is on TROPICAL switches which exceed IP 69K with a temperature range up to       +120 °C and is optimally suited for corrosive environments. High temperature switches up to 160 °C are also offerd. Other hot area sensors can be used in temperatures up to 250 °C. The lower end of the temperature scale is at -60 °C and applies to the POLAR switches. Large switching distances up to 170 mm and sensors resistant to rolling oils made from PTFE, PP or PEEK are also available for the food industry.  Intrinsically safe ex-classified sensors according to ATEX and compact dust-EX and gas-EX sensors complete the product program.

Application »
Installation »
Terminology »

Product finder
 

Brochure Inductive Sensors

Capacitive proximity switches

Capacitive proximity switches are available as IP 69K sensors up to 90 °C and well suited for corrosive environments. High temperature switches for temperatures up to 200 °C are available as well. Large switching distances up to 120 mm and sensors made from PTFE or PEEK, especially well-suited for the food industry, are also part of the product program. These special sensors are also extremely resistant to chemicals. Analog sensors determine distances. EX-proof sensors in accordance with ATEX are available as dust-EX and gas-EX sensors.

Application »
Installation »
Terminology »

Opto High capacity systems

Here you will find cross section converters to control the edges of bands or detect band interruptions as well as high performance photoelectric barriers and reflex sensors for large distances.

Application »

Opto High capacity systems

Here you will find cross section converters to control the edges of bands or detect band interruptions as well as high performance photoelectric barriers and reflex sensors for large distances.

Application »

Infrared detectors

Infrared detectors are used wherever and whenever temperatures have to be monitored and conventional sensors would fail due to excessive heat. EGE infrared detectors are characterized by an especially robust, industrial design and construction that protects the unit from mechanical stresses. The units are built in accordance with IP 68 and are thus waterproof up to 3 bar and resistant to high-pressure cleaning methods as well as temperature and climate fluctuations (IP 69K). The fiber glass optic is designed for the most extreme environmental conditions and can withstand temperatures up to 250°C, special version versions even up to 500°C.

Application »

Ultrasonic sensors

EGE ultrasonic sensors for contactless measuring of distances are robust in design and waterproof (IP 67.) They are available for switching points from 10 to 3500 mm and are programmable as well.

Application »

Infrared detectors - Applications

Function and application

Where conventional sensors would fail due to too high temperature, infrared detectors working on a non-contact principle can be used. They respond to the radiated heat of the hot materials. Compact units with optics are used for distances of 2 to 8 m from the object. For distances of only a few cm, heat-resistant light-conducting cables should be used for transmission.

Series ODM

Infrared detectors ODM... detect energy radiated by a hot body in the near infrared range (1 ... 3 µm). Energy absor- bed within the spectral range determines detected temperatures. Optical and assessment electronics are situated in a stainless steel casing. O-ring gaskets ensure safe operation even in the presence of large temperature and humidity fluctuations. The plug connector is water tight to IP 68.
If environmental temperatures exceed 70° C, an optical fibre cable can be used up to 250° C. This can be fitted with a supplementary optical system if required. In case of such applications, the optical fibre cable should be laid in protective tubes and not be frequently moved.
The fibre cable fast-connector LLK-plug allows for fast and safe exchange.
The infrared detectors are specified for different sensitivities. If the target temperature exceeds the sensitivity specified, the output of the detector will be activated.

Series OD 100

The sensor OD 100 GSPP detects temperatures up  to 300°C contactlessly. Within this temperature range it is possible to adjust two switching points. The switching status is indicated by two colour LEDs. The sensor OD 100 GA has one analogue output 4.20mA. The temperature of an object detected by the infrared detector  depends  on  the  emission  coefficient,  the distance and the lighting area. To prevent these influences it is important to adjust the switching points of the infrared-detector on site.

Series ODE

The ODE 350 infrared sensor measures the energy transmitted from a body in the near infrared region (1 ... 3 µm). The energy taken up in this region of the spectrum is a measure of the temperature of the hot objekt. The device has four outputs which are independent of one another; two analogue outputs (current, voltage) and two outputs each with a switching threshold preselectable as either a relay change-over contact or as a semiconductor output. The required characteristic curve is preselected by a selector switch.

The device is operated using a fibre-optic cable, which can have temperature stability of up to 350 ºC. The standard cable can take up to 250 ºC. They have quick-release fastener provided with thread. To limit the angular field and increase sensitivity supplementary lenses for fibreoptic cable are available.

The given sensitivities refer to the use of a 1m long fibreoptic cable with a bundle diameter of 4mm during full illumination. Other fibre-optic cables and lenses yield correspondingly different minimum operating temperatures. As a rule, a fibre-optic cable with an additional length of 1m decreases the reaction sensitivity by 75 ºC.

Adjustment on switching detectors

1. Remove protection screw from the potentiometer.
2. The sensor must be mounted at its finally position.
3. Turn the screwdriver till the output switches (LED red).
Now the temperature is adjusted on which the infrared-detector responsed. The switching temperature can be increased if you turn the potentiometer clockwise.
4. Remount the protection screw.

Analogue temperature detection

The current output for the temperature is correct when:
a) the measured object has a homogeneous temperature and when its area has a minimum size of the sensor.s detection range (see path of the rays)
b) the emmision coefficient is Epsilon = 1 (black body).

At other cases the OD 100 GA measure a too low tempe rature. Therefore the OD 100 GA has a potentiometer for an adjustment.

Adjustment

1. Remove protection screw from the potentiometer.
2. The sensor must be mounted at is final position.
3. The actual temperature of the object must be known.
4. Turn  the  potentiometer  clockwise  until  the  output  current correspond with the object temperature (see output characteristics).

Approval for safety applications
Sensors for personal security must have a qualifification approval according to EN 954-1 and must be labeled accordingly. Sensors that are not labeled must not be used for applications of this kind.

Ultrasonic sensors - Technology and application

Basics
Ultrasonic sensors are transmitting and receiving ultrasonic signals. These signals have a frequency range from 65 kHz up to 300 kHz. Ultrasonic sensors can be used for several different applications, for example:

diameter detection
looptension
height detection
level measuring
counting

Application notes

Non-contact detection of:

distances
presence
level
diameter
position

Independent of:

material
coloure
light
smoke
dust

Cycle period

A pulse is transmitted at the time 0, reflected by an objekt, received by the transducer and again reflected. The next pulse can be transmitted when all energy of the first pulse is absorbed. This time period is called TCycle (cycle period). (Fig. 1)

Sensors with
long sensing ranges have long cycle periods
and slow reaction time
short sensing ranges have short cycle periods
and fast reaction times

Angle of beam

The energy of the ultrasonic pulse is transmitted in form of a cone along the sensor axis. The highest intensity is on the axis and decreases with rising angles. The angle of beam is defined by the angle through which the energy of the ultrasonic pulse is reduced of 33% of its maximum value.

The best detection is given by an object that stands vertical to the transducer axis. To give a save detection, the object should not have an greater angle than half of the angle of beam (alpha /2). (Fig. 2) If the object is canted at a greater angle, there is no reflection of the ultrasonic pulses. An object with a flat surface and canted at an angle of 45° to the transducer axis refracts the ultrasonic pulse in an angle of 90°.

Voltage amplitude

During the transmission the voltage amplitude of the ultrasonic pulse is approximate 80V PP.
The pulse period of the ultrasonic pulse depends on the period of the transmission pulse and on the ringing time of the transducer.
The voltage amplitude of the received echo is in the range of V.  (Fig. 3)

Blind zone

It is not possible to receive an echo during the transmission of the ultrasonic pulse (0 up to tpulse). This time period defines the range of the Blindzone (0 up to XD). In this Blindzone it is not possible to measure a distance. (Fig. 4)

Approval for safety applications
Sensors for personal security must have a qualifification approval according to EN 954-1 and must be labeled accordingly. Sensors that are not labeled must not be used for applications of this kind.

Metal detectors

EGE metal detectors are reliable and robust. They are designed for outside applications in harsh climates. The metal detector System 3000 is designed to detect medium-sized and larger parts. The system has a very effective sensitivity setting. Together with the amplifier MU 3300, it responds to medium-sized parts such as nails, nuts or pieces of flatware when set to the highest sensitivity setting. Together with the amplifier MDV, it only responds to larger metal parts such as the teeth of an excavator shovel, equipment or tool parts or paneling. Such parts could damage stone-crushing machines, vibratory equipment, or wood-chipping machines. 
When used in this manner, the metal detector is suitable for protecting machinery by preventing that larger parts interrupt operation of the equipment. It detects metal during bulk material transport by means of contactless measurements.

Ex-classified devices

ATEX

Work areas and machines used to process hazardous substances or materials are subject to especially high risks and therefore protected with suitable measures.  The EX representative of the company or plant determines the production resources and equipment in such a way as to minimize the risk of an explosion even with malfunctions or defects of such resources or equipment. The utilized devices have to be certified by an independent organization in accordance with the EX guideline ATEX 94/9 and then are issued a test certificate, namely the ATEX Type Test Certificate.

EGE offers a broad spectrum of sensors for industrial automation and process technology applications. All of these are approved for use in hazardous environments. EGE has many years of experience with EX protection and was the first company to globally market inductive and capacitive proximity switches also approved for use in dust atmospheres prone to explosions.

EGE provides the following sensors:
Flow controllers: For high temperatures, for aggressive media, in special materials and special designs.
Level controllers: Capacitive and opto sensors for high temperatures, aggressive media
Proximity switches: Inductive and capacitive, for large switching distances, harsh environments
 

Data sheets Ex devices

ATEX Gas Ex

EGE provides a broad product range of sensors for gas EX areas. EGE gas EX sensors are intrinsically safe and are therefore operated with an external EX amplifier (Zener barrier, isolating switch amplifier), which limits the amount of energy that can be brought to an EX environment (Zone 0 or Zone 1). The switching units are either set up outside of the EX area or can be operated in Zone 1 (example: SS400 Ex or SF3).

Flow controllers for use in the chemical industry are made from stainless steel (V4A / 1.4711) or different special materials such as Hasloy or titanium so that they are also suitable for aggressive media.

To monitor fill levels, EGE supplies devices suitable for aggressive or corrosive media and high temperatures up to 195°C (in temperature class T3).

The inductive proximity switches feature N+N technology (type Namur)

Fundamentals »
Application »
 

Brochure ATEX Gas-Ex

ATEX Dust Ex

EGE manufactures proximity switches and flow controllers for areas at risk for dust explosions. They are operated with a separate switching unit (Zener barrier / isolating switch amplifier) and are approved for use in Zone 20 or Zone 21, which means in areas with an almost always or frequent atmosphere subject to dust explosions.

For areas where hazardous/explosive materials are rare (Zone 22), EGE provides compact units that do not need an external switching device (Zener barrier) and are connected the same way standard proximity switches or flow controllers are.

Fundamentals »
Application »
 

ATEX Dust Ex - Application

Example of zoning for a silo facility

When storing grain as well as during the loading and unloading of transport vehicles for these products, it is possible for potentially explosive dust-air mixtures to be produced. Zoning allocations must be undertaken for the selection of the approved monitoring devices. A potentially explosive atmosphere is constantly present on the inside of silos filled with grain (zone 20). Outside of the silo and in the loading duct this condition occurs only occasionally, e.g. during filling and empty (zone 21). Zone 21 is enclosed by Zone 22, in which hazardous dust-air mixtures can be found only during breakdowns, which in this case is estimated to be very seldom.

Diagram of a possible zoning allocation for a grain operation

Sensors under ATEX for Ex dust

Airflow sensors STS 21..
The airflow sensors in series STS 21.. are conceived for use in extraction systems and conveyor systems. They belong to equipment category 1D and are therefore approved for use in zone 20, the most demanding.

Amplifier SZA..
Amplifiers for air flow monitors in series SZA are intended for installation on a mounting rail. The devices can be delivered as switches with adjustable limiting values or as an analog device with 4..20mA output as a trend display.

Inductive sensors IGEX and IDEX
Sensors for detecting metals in the Ex area zone 20 or zone 22. Devices can be delivered in the standard configurations M12, M18 and M30. For large switching distances there are configurations with diameters of 80mm to 160mm.

Capacitive sensors KGEX and KDEX
Sensors for almost all materials in the Ex area zone 20 or zone 22 can be delivered as proximity switches up to 80 mm diameter or as used as level monitor with G1 thread.

Amplifier SS 400...
The amplifiers for airflow sensors are installed directly in zone 21 and can be adjusted and read on site.

Amplifier EGE 90...
The amplifiers EGE 90... instruments for inductive and capacitive sensors are intended for rail mounting installation.

Housing for screw terminals GK...
These terminal boxes make it possible to set up terminal clamping points in intrinsically safe and in not intrinsically safe electric circuits within zone 21. The boxes are manufactured with type "e" (increased safety) or type "i" (intrinsic safety) protection.

Housing for amplifiers GAM...
The analysis devices are ready for mounting and use within zone 21 and serve to connect several optical or thermal level controllers.

Metal detectors - Technology and application

The metal detector System 3000 is designed to detect medium size and larger pieces of metal. The system has a very effective means of adjusting sensitivity. When used with the MU 3300 amplifier, it will respond at the highest level of sensitivity to medium size parts like nails, washers, or pieces of flatware. When used with the MDV amplifier, it will respond only to larger pieces of metal like teeth from an excavator bucket, tools, or metal paneling. If not discovered, these items could destroy stone-crushing machines, vibratory equipment, or wood-chipping machines. When used in this manner, the metal detector is suitable for protecting machinery, whereby smaller parts will not interrupt operation of the equipment. It detects metal during bulk material transport by means of contactless measurement.

The System 3000 consists of an amplifier and an inductive detector  coil.  The  amplifier  is  equipped  with  an  automatic adjustment  regulator  that  ensures  reliable  operation  even when disturbing metal parts are in close proximity to the detector coil. In addition, the adjustment regulator also ensures that only metal parts that are in motion will be detected.

One of the amplifier's tasks is to process the signals emitted by the metal detector coil and convert them into an electronic pulse. The detector coil generates an electromagnetic field. As soon as a piece of metal passes by the coil, it disturbs that field, resulting in a signal that can be evaluated.

The operator adjusts the metal detector's sensitivity on the potentiometer. The coil's sensitivity is dependent on several factors, including: the coil's environment, the electromagnetic characteristics of the material to be detected, and the speed with which the material is transported.

The MU 3300 amplifier has a self-monitoring function. Any error that appears in the system will activate a separate output relay. The unit's electronics are installed in a robust metal housing that has a window for the functional display.

The MDV 3172  and MDV 3220 amplifiers are particularly well suited for use in extremely difficult environments like those that involve dirt, temperature fluctuations, or vibration. These models therefore possesses only the most critical adjustment and display functions.

The detector coils are mounted with PVC columns on an aluminium baseplate that shields the coils from electromagnetic disturbances coming from the substructure. The baseplate simultaneously provides stability. Whenever the operator must arrange the detector coil in the presence of ironstructural elements, he can use the aluminium plate to shield the coil.

It is preferable to arrange the detector coils underneath the material transport belts in order to minimize the chance of mechanical damage to the coil. The distance to the belt's transport rollers should be at least equal to the width of a coil. In order to most effectively exploit the metal detector's sensitivity,  maintain  a  metal-free  area  around  the  detector  coil approximay equal to 1.5 to 2 times the coil diameter.

If the coil is installed in a hanging position above the transport belt, always make sure that no structural parts made of iron are too close to the coil and especially that they do not vibrate. If this cannot be avoided, it will be necessary to reduce the sensitivity.  This  will  consequently  reduce  the  detection distance or may have the result that only large pieces of metal will be detected.
The detector coils have a special 3-meter long cable. If the distance between the detector coil and the amplifier is longer  than 3 meters, connect these two units with the KS 030 DS... extension  cable.  The  longest  permissible  distance  is  50 meters. In order to ensure that the system will work properly at that distance, we recommend using the EGE special extension cable.

By using connection box MA 125 two detector coils can operate together with one amplifier MDV.../ MU....The maximum cable length between one coil and the connection box MA 125 is 3 m.

Approval for safety applications
Sensors for personal security must have a qualifification approval according to EN 954-1 and must be labeled accordingly. Sensors that are not labeled must not be used for applications of this kind.