BLR

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WIKA · Level measurement · Family BLR

Reed level transmitter

Name: Reed level transmitter
Brand: WIKA

Reed sensor for continuous level measurement of liquids in bypass level indicators, based on float principle with magnetic transmission.

Output

3-wire potentiometer

Protection

IP66/IP68

RoHSEACGOSTDNV GLPESOCEATEXIECExKazInMetrBelGIMUkrSEPROUzstandardII 2G Ex ia IIC T4 ... T6 GbII 2G Ex ib IIC T4 ... T6 GbII 2D Ex ib IIIC T80 °C DbII 2G Ex d IIC T6 GbII 2D Ex tb IIIC T80 °C Db

Price

On request

Depends on configuration

Request a quote

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Description

The model BLR reed sensors are used for continuous monitoring and recording of the liquid level in connection with transmitters. They work on the float principle with magnetic transmission (permanent magnet, reed switch and resistance measuring chain) in a 3-wire potentiometer circuit.

A magnetic system built into the float actuates reed contacts, through the walls of the bypass chamber and of the sensor tube, in a resistance measuring chain (potentiometer). The measurement voltage generated by this is proportional to the fill level.

for further approvals see page 3

Reed sensor, model BLR-S

The resistance measuring chain is made up from reed contacts and resistors soldered onto a PCB. Depending on requirements and design several different contact separations from 5 to 18 mm are available.

For selecting the optimum sensor (sensor model, connection housing, electrical connection, sensor tube (material and total length), contact separation, head-mounted transmitter, measuring range, approval) we offer application-related technical advice.

Special features

Installation of head-mounted transmitters in the connection housing possible
Wide variety of different electrical connections, process connections, materials and contact separations
Programmable and configurable head-mounted transmitters for 4 ... 20 mA, HART ® , PROFIBUS ® PA or FOUNDATION™ Fieldbus field signals
Explosion-protected versions
Temperature ranges from -100 … +350 °C

Identification

Model	BLR
Subcategory	reed sensor

Process conditions

Process temperature	−100…+350 °C
Measurement technology	float

Electrical characteristics

Output signal	3-wire potentiometer · 4 ... 20 mA · HART · PROFIBUS PA · FOUNDATION Fieldbus
Power supply	< AC 50 V, < DC 75 V

Materials

Wetted parts material

1.4571 stainless steel, aluminium, polyester, polypropylene

Operating environment

Ambient temperature	−50…+350 °C
IP rating	IP66/IP68

Certifications and approvals

Certifications

RoHSEACGOSTDNV GLPESOCEATEXIECExKazInMetrBelGIMUkrSEPROUzstandard

Explosion protection

II 2G Ex ia IIC T4 ... T6 GbII 2G Ex ib IIC T4 ... T6 GbII 2D Ex ib IIIC T80 °C DbII 2G Ex d IIC T6 GbII 2D Ex tb IIIC T80 °C DbEx d IIC T6 Ex tD A21 IP65 T80 °CKEMA 01 ATEX 1052 X (II 2G Ex ia IIC T4 ... T6 Gb, II 2D Ex ib IIC T4 ... T6 Gb or II 2 D Ex ib IIIC T80 °C Db)TÜV 13 ATEX 7399 X (II 2G Ex d IIC T6 Gb / II 2 D Ex tb IIIC T80 °C Db)IECEx TUR 09.0002X (-40 °C ≤ Ta ≤ +55 °C Ex d IIC T6 Ex tD A21 IP65 T80 °C)

Additional details

Datasheet languages

Tables from datasheet

Logo	Description		Country
	EU declaration of conformity ■ EMCdirective EN 61326 emission (group 1, class B) and interference immunity (industrial application)	European Union
	■ RoHS directive ■ ATEX directive (option) Hazardous areas
	IECEx (option) Hazardous areas - Ex d Zone 1/2	No.IECExTUR 09.0002X	International
	EAC ■ EMCdirective No.TC N RU Д-DE.A301.B.00820 ■ Hazardous areas No.RU C-DE.ГБ08.B.01489	Eurasian Economic Community
	GOST Metrology, measurement technology No. 19359	Russia
	KazInMetr Metrology, measurement technology No. 13947	Kazakhstan
	BelGIM Metrology, measurement technology No. 9711	Belarus
	UkrSEPRO Metrology, measurement technology No. UA-MI/2-4988-2015	Ukraine
	Uzstandard Metrology, measurement technology No. 02.6649	Uzbekistan
-	PESO Hazardous areas No. P331149/1	India
	DNV GL Ships, shipbuilding No.TAA00000M2	International

	Model BLR-SA	Model BLR-SB
Electrical connection	Connection housing:Aluminium80x75x57mm Option: Polypropylene, polyester, stainless steel	Connection housing: Aluminium 80 x 75x57mm with head-mounted transmitter Option: Polypropylene, polyester, stainless steel
Guide tube diameter	14mm
Temperature range ■ Standard version ■ High-temperature version ■ Low-temperature version ■ Standard version with Mikroterm ■ High-temperature version with Mikroterm	-50 ...+100 °C -50 ...+200 °C -100 ...+100 °C -50 ...+250 °C -50 ...+350 °C
Resolution	2.7 mm/ 5.5 mm/ 7.5mm/9mm (depending on contact separation)
Overall resistance of the measuring chain	Depending on length and separation
Head-mounted transmitter	External transmitter	Head-mounted transmitter, see page 7
Output	3-wire potentiometer	4 ...20mA
Permissible power supply	< AC 50 V, < DC 75V	See the data sheet of the head-mounted transmitter used
Ingress protection	up to IP66 or IP68 per IEC/EN 60529 (depending on version)

	Model BLR-SAI (MG...)	Model BLR-SBI (MG...)
Electrical connection	Connection housing:Aluminium80x75x57mm Option: Stainless steel	Connection housing: Aluminium 80 x 75x57mm with head-mounted transmitter Option: Stainless steel
Guide tube diameter	14mm
Maximum permissible surface temperature at the sensor tube	T4: +100 °C T5: +65 °C T6: +50 °C
Resolution	2.7 mm/ 5.5 mm/ 7.5mm/9mm (depending on contact separation)
Overall resistance of the measuring chain	3.2 ... 50 kΩ
Control circuit	Ignition protection type Ex ia IIC (only for connection to a certified intrinsically safe control circuit) and ignition protection type intrinsically safe Ex ib IIC
Head-mounted transmitter	External transmitter	Head-mounted transmitter, see page 7
Output	3-wire potentiometer	4 ...20mA
Permissible power supply	< AC 50 V, < DC 75V	See the data sheet of the head-mounted transmitter used
Ingress protection	up to IP66 or IP68 per IEC/EN 60529 (depending on version)

	Model BLR-SAD (AVK-ADF)	Model BLR-SBD (AVK-ADF)
Electrical connection	Connection housing: Aluminium170x151x87mm Option: Stainless steel	Connection housing: Aluminium 170x151x87mm with head-mounted transmitter
Guide tube diameter	14mm
Maximum permissible surface temperature at the sensor tube	T4: +100 °C T5: +65 °C T6: +50 °C
Resolution	2.7 mm/ 5.5 mm/ 7.5mm/9mm (depending on contact separation)
Overall resistance of the measuring chain	Depending on length and separation
Head-mounted transmitter	External transmitter	Head-mounted transmitter, see page 7
Output	3-wire potentiometer	4 ...20mA
Permissible power supply	< AC 50 V, < DC 75V	See the data sheet of the head-mounted transmitter used
Ingress protection	up to IP66 or IP68 per IEC/EN 60529 (depending on version)

View all (12)

Model	4 ... 20 mA	HART ®	PROFIBUS ® PA	FOUNDATION™ Fieldbus	Ex i	Display	Order no.
TE	x				x		014832
TS	x						005894
T32E	x	x			x		025216
T32S	x	x					114795
T53F				x	x		025727
T53P			x		x		034422
TLH	x	x				x	019989
TLEH	x	x			x	x	021104
T15	x				x		122955 122954

Replaced model	Current model	Description
MG-A.VK../..L…/M…/14	BLR-S	Level sensor reed, standard
MG-A.VK../..L…/M…/14-Ex	BLR-S-Ex i	Level sensor reed, intrinsically design Ex i
AF-ADF	BLR-S-Ex d	Level sensor reed, explosion proof design ex d

Sensor model	Description	Approval without	Ex i	Ex d	GL	DNV	Ex i + GL	Ex i + DNV	IEEE 323	Tempera- ture range
BLR-S	Reed sensor, standard	x			x	x			x	-50 ...+350 °C
BLR-S-Ex i	Reed sensor, intrinsically safe version Ex i		x				x	x	x	-50 ...+100 °C

Explosion protection	Ignition protection type	Model	Zone	Approval number
ATEX	Ex i	BLR-S-Ex i	Zone 1, gas	KEMA 01ATEX1052 X II 2G Ex ia IIC T4 ...T6 Gb
	Ex i + GL	BLR-S-Ex i	Zone 1, gas	KEMA 01ATEX1052 X II 2G Ex ia IIC T4 ...T6 Gb + GL 35949-87 HH
	Ex i + DNV	BLR-S-Ex i	Zone 1, gas	KEMA 01ATEX1052 X II 2G Ex ia IIC T4 ...T6 Gb + DNV A-11451

Approval	Model	Approval number
GL	BLR-S	GL - 35 949 - 87 HH
DNV	BLR-S	DNV A-11451
IEEE 323, 344	BLR-S	-
GOST-R	all	0959333

Specifications
Connection housing	Aluminium 80 x 75x57mm Stainless steel 1.4571 Ø70x77mm Stainless steel 1.4571 with digital indicator Ø70x77mm
Sensor tube	Stainless steel 1.4571, tubeØ14x1mm
Contact separation	18 mm, standard 15 mm, high temperature, low temperature 10 mm, standard, high temperature, low temperature 5 mm, standard, high temperature, low temperature
Overall resistance of the measuring chain	Length and separation dependent
Ambient temperature	Standard version -50 ...+100 °C High temperature version -50 ...+200 °C Low temperature version -100 ...+100 °C Standard version with Microtherm ® -50 ...+250 °C High temperature version with Microtherm ® -50 ...+350 °C
Ingress protection	Aluminium connection housing: IP 65 Stainless steel connection housing: IP 67

Specifications

Connection housing	Aluminium 80 x 75x57mm Polyester 80 x 75x55mm Stainless steel 1.4571 Ø70x77mm Stainless steel 1.4571 with digital indicator Ø70x77mm
Sensor tube	Stainless steel 1.4571, tubeØ14x1mm
Contact separation	18mm 10mm 5mm
Overall resistance of the measuring chain	3.2 ... 50 kΩ
Max. permissible surface temperature at the sensor tube	T4 +100 °C T5 +65 °C T6 +50 °C
Ingress protection	Aluminium connection housing: IP 65 Stainless steel connection housing: IP 67
Approval	Ex i

Model	4 ... 20 mA	HART ®	PROFIBUS ® PA	Fieldbus ™	Exi	SIL2	IEEE 323, 344	Display
TE	x				x		x
TS	x
T32E	x	x			x	x
T32S	x	x				x
T53F				x	x
T53P			x		x
TLH	x	x						x
TLEH	x	x			x			x