WIKA · Level measurement · Family BGU
Magnetic switch
Magnetic switches for detecting the limits of levels in bypass or top-mounted level indicators
Output
binary signal · NAMUR
Protection
IP66/IP68
CERoHSDNV GLEACATEXFMEAC LVDFM Hazardous areas XPFM XP
Price
On request
Depends on configuration
Description
The model BGU magnetic switches serve to detect the limits of levels in bypass or top-mounted level indicators. They generate a binary signal which can be fed to downstream signalling or control equipment. Bistable versions enable the storage of signals.
The magnetic switches are mounted to the magnetic display with sliding blocks or directly to the level indicator with a tightening strap. The magnetic switches are available with different approvals and with SIL 1.
for further approvals see page 3
Magnetic switch, model BGU-S
For selecting the optimum switch (switch model, approval, switching option, cable length, cable material) we offer application-related technical advice.
Special features
- Proper functioning, even under extreme environmental influences, e.g. dirt, humidity, gases, dust, chips
- Compact and operationally safe design
- Mounting of the switches at the magnetic display with T-slot or with tightening strap
- Process temperature of -60 ... +380 °C (depending on version)
Identification
| Model | BGU |
| Subcategory | Magnetic switch |
Accuracy
| Safety integrity level (SIL) | SIL 1 |
Process conditions
| Process connection | M16 x 1.5M20 x 1.53/4" NPTcable outletM12 connectorT-slotTightening strap |
| Process temperature | −196…+380 °C |
| Measurement technology | vibration_fork |
Electrical characteristics
| Output signal | binary signal · NAMUR · series resistor R22 · Reed contact · Proximity switch · Microswitch · Series resistor 22Ω |
| Electrical connection | cable outlet, M16 x 1.5, M20 x 1.5, M12 connector, 3/4" NPT |
Materials
| Wetted parts material | Aluminium, Stainless steel |
Operating environment
| Ambient temperature | −60…+80 °C |
| IP rating | IP66/IP68 |
Certifications and approvals
| Certifications | CERoHSDNV GLEACATEXFMEAC LVD |
| Explosion protection | FM Hazardous areas XPEx i II 2G Ex ib IIC T6 ... T1 Gb II 2D Ex ib IIIC T80 ... T180 °C DbEx dII 2G Ex db IIC T6 ... T1 Gb II 2D Ex tb IIIC T80 ... T145 °C DbFM XPATEX Ex i II 2G Ex ib IIC T6...T1 Gb II 2D Ex ib IIIC T80...T180 °C DbATEX Ex d II 2G Ex db IIC T6...T1 Gb II 2D Ex tb IIIC T80...T145 °C DbEx i II 2G Ex ib IIC T6...T1 Gb, II 2D Ex ib IIIC T80...T180 °C DbEx d II 2G Ex db IIC T6...T1 Gb, II 2D Ex tb IIIC T80...T145 °C Db |
Additional details
| Datasheet languages | EN, DE |
Tables from datasheet
| Basic model | Material | Electrical connection | Switching element | Switching option | |
|---|---|---|---|---|---|
| R (series resistor 22 Ω) | N (NAMUR) per EN 60947-5-6 | ||||
| BGU-S | Aluminium body | Cable outlet | Reed contact | x | x |
| BGU-A | Aluminium body + aluminium case A101 | ■ M16 x 1.5 ■ M20 x 1.5 | Reed contact | x | x |
| BGU-M12 | Aluminium body | M12 connector | Reed contact | x | x |
| BGU-VHT | Stainless steel case AV4 | M20 x 1.5 | Reed contact | x | x |
| BGU-AIH | Aluminium case A105 | M20 x 1.5 | Proximity switch high alarm | - | - |
| BGU-AIL | Aluminium case A105 | M20 x 1.5 | Proximity switch low alarm | - | - |
| BGU-V | Stainless steel body | Cable outlet | Reed contact | x | x |
| BGU-AL | Aluminium case XD-JB85 | ■ M20 x 1.5 ■ 3/4" NPT | Reed contact | x | x |
| BGU-AM | Aluminium case JBDR33 | 3/4" NPT | Microswitch | - | - |
| BGU-AX | Aluminium case JBDR33 | 3/4" NPT | Reed contact | x | x |
| BGU-AXP | Aluminium case XIHFCX3L | 3/4" NPT | Reed contact | - | - |
| BGU-AMXP | Aluminium case XIHFCX3L | 3/4" NPT | Microswitch | - | - |
| BGU-AHTXP | Aluminium case XIHFCX3L | 3/4" NPT | Reed contact | - | - |
| Basic model | Without approval | ATEX Ex i | DNV GL | ATEX Ex d | FM | EAC Ex | EAC LVD |
|---|---|---|---|---|---|---|---|
| BGU-S | x | x | x | - | - | x | x |
| BGU-A | x | x | x | - | - | x | x |
| BGU-M12 | x | x | - | - | - | x | x |
| BGU-VHT | x | x | - | - | - | - | x |
| BGU-AIH | - | x | - | - | - | - | - |
| BGU-AIL | - | x | - | - | - | - | - |
| BGU-V | x | x | x | x | - | x | x |
| BGU-AL | - | - | - | x | - | - | - |
| BGU-AM | - | - | - | x | - | - | - |
| BGU-AX | - | - | - | x | - | - | - |
| BGU-AXP | - | - | - | - | x | - | - |
| BGU-AMXP | - | - | - | - | x | - | - |
| BGU-AHTXP | - | - | - | - | x | - | - |
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity ■ Low voltage directive ■ RoHS directive | European Union | |
| ■ ATEX directive (option) Hazardous areas - Ex i II 2G Ex ib IIC T6 ...T1 Gb II 2D Ex ib IIIC T80 ...T180 °C Db - Ex d II 2G Ex db IIC T6 ...T1 Gb II 2D Ex tb IIIC T80 ...T145 °C Db | ||
| FM Hazardous areas XP | USA | |
| EAC ■ Low voltage directive ■ Hazardous areas | Eurasian Economic Community | |
| DNV GL ■ Ships, shipbuilding ■ Hazardous areas | International |
| Switching power | BGU-A | BGU-AIH | BGU-AIL | BGU-AHTXP | BGU-AL | BGU-AM |
|---|---|---|---|---|---|---|
| Standard + DNV GL + Ex d AC ≤ 230 V; ≤ 40 VA; ≤ 1 A DC ≤ 230 V; ≤ 20 W; ≤ 0.5 A | BGU-A BGU-AG | - | - | BGU-AHTXPF | BGU-ALD | - |
| Standard + DNV GL with series resistor AC ≤ 50 V; ≤ 40 VA; ≤ 300 mA DC ≤ 75 V; ≤ 20 W; ≤ 300 mA | BGU-AR BGU-ARG | - | - | - | - | - |
| Standard + DNV-GL with NAMUR AC ≤ 50 V; ≤ 30 VA; ≤ 10 mA DC ≤ 75 V; ≤ 20 W; ≤ 10 mA | BGU-AN BGU-ANG | - | - | - | - | - |
| Ex i + DNV GL standard or with series resistor U i ≤ 36 V; I i ≤ 100 mA;P i ≤ 0.84W | BGU-AI BGU-AGI BGU-ARI BGU-ARGI | - | - | - | - | - |
| Ex i + DNV GL + Ex d with NAMUR U i ≤ 18.5 V; I i ≤ 30 mA;P i ≤ 0.4W | BGU-ANI BGU-ANGI | - | - | - | BGU-ALND | - |
| Ex d with series resistor AC ≤ 230 V; ≤ 100 mA; ≤ 1 VA DC ≤ 230 V; ≤ 100 mA;≤1W | - | - | - | - | BGU-ALRD | - |
| Proximity switch always with NAMUR U i ≤ 16 V; I i ≤ 25 ... 76 mA; P i ≤ 34 ...242mW | - | BGU-AIHI | BGU-AILI | - | - | - |
| Microswitch AC ≤ 230 V; ≤ 5 A DC ≤ 230 V; ≤ 5 A | - | - | - | - | - | BGU-AMD |
View all (20)
| Switching power | BGU-AMXP | BGU-AX | BGU-AXP | BGU-M12 | BGU-S | BGU-V | BGU-VHT |
|---|---|---|---|---|---|---|---|
| Standard + DNV GL + Ex d AC ≤ 230 V; ≤ 40 VA; ≤ 1 A DC ≤ 230 V; ≤ 20 W; ≤ 0.5 A | - | BGU-AXD | BGU-AXPF | BGU-M12 | BGU-S BGU-SG | BGU-V BGU-VG BGU-VD | BGU-VHT |
| Standard + DNV GL with series resistor AC ≤ 50 V; ≤ 40 VA; ≤ 300 mA DC ≤ 75 V; ≤ 20 W; ≤ 300 mA | - | - | - | BGU-M12R | BGU-SR BGU-SRG | BGU-VR BGU-VRG | BGU-VHTR |
| Standard + DNV-GL with NAMUR AC ≤ 50 V; ≤ 30 VA; ≤ 10 mA DC ≤ 75 V; ≤ 20 W; ≤ 10 mA | - | - | - | BGU-M12N | BGU-SN BGU-SNG | BGU-VN BGU-VNG | BGU-VHTN |
| Ex i + DNV GL standard or with series resistor U i ≤ 36 V; I i ≤ 100 mA;P i ≤ 0.84W | - | - | - | BGU-M12I BGU-M12RI | BGU-SI BGU-SGI BGU-SRI BGU-SRGI | BGU-VI BGU-VGI BGU-VRI BGU-VRGI | BGU-VHTI BGU-VHTRI |
| Ex i + DNV GL + Ex d with NAMUR U i ≤ 18.5 V; I i ≤ 30 mA;P i ≤ 0.4W | - | BGU-AXND | - | BGU-M12NI | BGU-SNI BGU-SNGI | BGU-VNI BGU-VNGI BGU-VND | BGU-VHTNI |
| Ex d with series resistor AC ≤ 230 V; ≤ 100 mA; ≤ 1 VA DC ≤ 230 V; ≤ 100 mA;≤1W | - | BGU-AXRD | - | - | - | BGU-VRD | - |
| Microswitch AC ≤ 230 V; ≤ 5 A DC ≤ 230 V; ≤ 5 A | BGU-AMXPF | - | - | - | - | - | - |
Temperature ranges
| Process temperature | |
|---|---|
| Cable version, reed 9) | -50 ...+180 °C |
| Aluminium case A101, reed | -50 ...+180 °C |
| Stainless steel case, reed | -196 ...+380 °C |
| Connector version, reed | -40 ...+100 °C |
| Ambient temperature | -40 ...+80 °C |
Temperature ranges
| Process temperature | |||||
|---|---|---|---|---|---|
| Cable version, reed 9) | -40 ...+150 °C | ||||
| Aluminium case A101, reed | -40 ...+150 °C | ||||
| Stainless steel case, reed | -60 ...+380 °C | ||||
| Connector version, reed | -40 ...+100 °C | ||||
| Version with proximity switch (AIHI/AILI) | -40 ...+100 °C | ||||
| Ambient temperature | T1/T2 | T3 | T4 | T5 | T6 |
| Cable version, reed | -40 ...+80 °C | -40 ...+80 °C | -40 ...+80 °C | -40 ...+80 °C 1) | -40 ...+80 °C 2) |
| Aluminium connection housing, reed | -40 ...+80 °C | -40 ...+80 °C | -40 ...+80 °C | -40 ...+80 °C 1) | -40 ...+80 °C 2) |
| Stainless steel case, reed | -60 ...+80 °C | -60 ...+80 °C | -60 ...+80 °C | -60 ...+80 °C 1) | -60 ...+80 °C 2) |
| Connector version, reed | -40 ...+80 °C | -40 ...+80 °C | -40 ...+80 °C | -40 ...+80 °C 1) | -40 ...+80 °C 2) |
| Version with proximity switch (AIHI/AILI) | -40 ...+80 °C (for detailed information, see operating instructions) | ||||
| Max. operating temperature at the installation point (TB) | |||||
| Cable version, reed | +175 °C 3) | +175 °C 3) | +130 °C 3) 6) | +95 °C 3) 1) | +80 °C 2) |
| Aluminium connection housing, reed | +100 °C | +100 °C | +100 °C | +95 °C 1) | +80 °C 2) |
| Stainless steel case, reed | +180 °C 4) | +180 °C 5) 7) | +130 °C 8) | +95 °C 1) | +80 °C 2) |
| Connector version, reed | +80 °C | +80 °C | +80 °C | +80 °C 1) | +80 °C 2) |
| Version with proximity switch (AIHI/AILI) | ≤ 30 ... 100 °C (for detailed information, see operating instructions) | ||||
| Max. surface temperature for dust protection, zone 21 | TB + 5K |
| Ingress protection per IEC/EN 60529 | Without approval | Ignition protection type Ex i | Ignition protection type Ex d |
|---|---|---|---|
| Cable version, reed | IP66 | IP66 | IP66/IP68 |
| Aluminium case A101, reed | IP66/IP68 | IP66/IP68 | - |
| Stainless steel case, reed | IP66/IP68 | IP66/IP68 | - |
| Connector version, reed | IP67 | IP67 | - |
| Version with proximity switch (AIHI/AILI) | - | IP66/IP68 | - |
| Aluminium case AL, reed | - | - | IP66/IP68 |
| Aluminium case AX, reed + AM microswitch | - | - | IP65 |
| Contact protection relay | Contacts | Input | Supply voltage | Ex marking | Order no. |
|---|---|---|---|---|---|
| KFD2-ER-1.6 | 1 x change-over contact AC 250 V, 2 A | 2 x contacts | DC 20 ...30V | - | 123806 |
| KFD2-SR2-Ex2.W | 2 x change-over contact AC 253 V, 2 A | 2 x contacts | DC 20 ...30V | II 1GD Ex ia IIC | 124344 |
| KFA6-ER-1.6 | 1 x change-over contact AC 250 V, 2 A | 2 x contacts | AC 230V | - | 124341 |
| KFA6-SR2-Ex2.W | 2 x change-over contact AC 253 V, 2 A | 2 x contacts | AC 230V | II 1GD Ex ia IIC | 123794 |
| RC element | Capacitance | Resistance | Voltage | Order no. |
|---|---|---|---|---|
| B3/110 | 0.33 µF | 470Ω | AC 110V | 126529 |
| B3/230 | 0.33 µF | 820Ω | AC 230V | 126530 |
| Switch model | Description | Approval | Switching power | Tempera- ture range | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| with- out | Ex | Exd | GL Ex + | i GL | IEEE 323, 344 | AC 230 V, 60 VA, 1 A | DC 230 V, 30 VA, 0.5 A | DC 30 V, 0.1 A | Proximi- ty switch | |||
| BGU | Reed, aluminium case, cable outlet | x | x | x | x | x | * | x | x | -50 ...+180 °C | ||
| BGU-A | Reed, aluminium connection housing, cable gland | x | x | x | x | * | x | x | -50 ...+180 °C | |||
| BGU-M12 | Reed, aluminium case, connector M12 | x | x | * | x | x | -40 ...+80 °C | |||||
| BGU-V | Reed, stainless steel case, cable outlet | x | x | x | x | x | x | -50 ...+180 °C | ||||
| BGU-AIH | Proximity switch, high alarm, alumi- nium case, cable gland | x | * | x | -40 ...+80 °C | |||||||
| BGU-AIL | Proximity switch, low alarm, aluminium case, cable gland | x | * | x | -40 ...+80 °C |
| Explosion protection | Ignition protection type | Model | Zone | Approval number |
|---|---|---|---|---|
| ATEX | Ex i | BGU, BGU-A, BGU-M12, BGU-V | Zone 0, gas | LCIE 01 ATEX 6047 X / ll 1 GEx ia llC T6-T3 |
| Ex d | BGU, BGU-V | Zone 1, gas | LCIE 01 ATEX 6047 X / ll 2 GEx d llC T6-T3 | |
| Ex i + GL | BGU, BGU-A | Zone 0, gas | LCIE 01 ATEX 6047 X / ll 1 GEx ia llC T6-T3 + GL - 99 355 - 97 HH |
| Approval | Model | Approval number |
|---|---|---|
| GL | BGU, BGU-A | GL - 99 355 - 97 HH |
| IEEE 323, 344 | BGU-V | - |
| GOST-R | all | 0959333 |
| Switching insert | Model | Zone |
|---|---|---|
| Proximity switch | BGU-AIL, BGU-AIH | Zone 1 |
Specifications
| Contact | Reed contact |
|---|---|
| Contact type | 1 change-over contact |
| Switch behaviour | Bistable |
| Switching power | |
| ■ Model BGU | AC 230 V, 60 VA, 1 A DC 230 V, 30 W, 0.5 A |
| ■ Model BGU-E | Only for connection to a certified intrinsically safe circuit with max. 100 mAand max.30V |
| Ambient temperature | -50 …+180 °C |
| Max. ambient temperature | |
| ■ Switch with connection cable from PVC | 90 °C |
| ■ Switch with connection cable from LMGSG | 150 °C |
| ■ Switch with connection cable from silicone | 180 °C |
| ■ Switch model BGU-E with connection cable from PVC, blue | T6 to 85 °C |
| Case | Aluminium |
| Ingress protection | IP 65 |
| Approvals | Ex i |
| Specifications | |
|---|---|
| Contact | Reed contact |
| Contact type | 1 change-over contact |
| Switch behaviour | Bistable |
| Switching power | AC 230 V, 60 VA, 1 A DC 230 V, 30 W, 0.5 A |
| Ambient temperature | -40 …+150 °C |
| Max. ambient temperature ■ Switch with connection cable from PVC, grey | T6 to 85 °C |
| ■ Switch with connection cable from silicone or armoured silicone | T6 to 85 °C T5 to 100 °C T4 to 135 °C T3 to 150 °C |
| Case | Aluminium |
| Ingress protection | IP 68 |
| Approvals | Ex d |
| Specifications | |
|---|---|
| Contact | Reed contact |
| Contact type | 1 change-over contact |
| Switch behaviour | Bistable |
| Switching power ■ Models BGU-A, BGU-A-GL ■ Model BGU-A-E | AC 230 V, 60 VA, 1 A DC 230 V, 30 W, 0.5 A Only for connection to a certi- fied intrinsically safe circuit with max. 100 mAand max.30V |
| Ambient temperature | -50 …+180 °C |
| Max. ambient temperature ■ Model BGU-A ■ Model BGU-A-GL ■ Model BGU-A-E | 180 °C 150 °C T6 to 85 °C T5 to 100 °C T4 to 135 °C T3 to 150 °C Aluminium, cable |
| Case | connection M16 x 1.5 * |
| Ingress protection | IP 65 |
| Approvals | Ex i |
| Specifications | |
|---|---|
| Contact | Reed contact |
| Contact type | 1 change-over contact |
| Switch behaviour | Bistable |
| Switching power ■ Model BGU-M12 | AC 230 V, 60 VA, 1 A DC 230 V, 30 W, 0.5 A Only for connection to a certified |
| ■ Model BGU-E-M12 | intrinsically safe circuit with max. 100 mAand max.30V -40 …+80 °C |
| Ambient temperature | |
| Max. ambient temperature ■ Model BGU-M12 ■ Model BGU-E-M12 | 80 °C T6 to 80 °C |
| Case | Aluminium |
| Ingress protection | IP 67 |
| Approvals | Ex i |
| Specifications | |
|---|---|
| Contact | Reed contact |
| Contact type | 1 change-over contact |
| Switch behaviour | Bistable |
| Switching power | |
| ■ Model BGU-V | AC 230 V, 60 VA, 1 A DC 230 V, 30 W, 0.5 A |
| ■ Model BGU-V-E | Only for connection to a certified intrinsically safe circuit with max. 100 mAand max.30V |
| Ambient temperature | -50 …+180 °C |
| Max. ambient temperature | |
| ■ Switch with connection cable from PVC | 90 °C |
| ■ Switch with connection cable from silicone | 180 °C |
| ■ Switch model BGU-V-E with connection cable from PVC, blue | T6 to 85 °C |
| Case | Stainless steel 1.4571 (316Ti) |
| Ingress protection | IP 65 |
| Approvals | Ex i |
| Specifications | |
|---|---|
| Contact | Reed contact |
| Contact type | 1 change-over contact |
| Switch behaviour | Bistable |
| Switching power | AC 230 V, 60 VA, 1 A DC 230 V, 30 W, 0.5 A |
| Ambient temperature | -50 …+150 °C |
| Max. ambient temperature ■ Switch with connection cable from PVC, grey ■ Switch with connection | T6 to 85 °C |
| cable from silicone or armoured silicone | T6 to 85 °C T5 to 100 °C T4 to 135 °C T3 to 150 °C |
| Case | Stainless steel 1.4571 (316Ti) |
| Ingress protection | IP 68 |
| Approvals | Ex d |
Industry
Energy
Power generating equipment, power plants
Industry
Oil & Gas
Chemical and petrochemical industries, oil and natural gas extraction (on- and offshore)
Industry
Chemistry / Pharma
Pharmaceutical, food, water treatment, environmental engineering industries
Industry
Machinery
Shipbuilding, machine building
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