Danfoss MBT 3250 Data sheet

Data Sheet

Temperature sensor Type MBT 3250

Heavy-duty industrial temperature sensor.

Heavy-duty temperature sensors for controlling cooling water, lubrication oil, hydraulic oil and refrigeration plants within general industry and marine applications.

On a standardized Pt 100 or Pt 1000 element, which gives a reliable and accurate measurement. The sensor can also be delivered with NTC / PTC elements on request.

The MBT 3250 with changeable measuring insert is equipped with EN 175302-803-A Pg plug as standard.

The measuring insert is based on a silicone cable, which makes the sensor very resistant towards vibrations.

Features:

• Gaseous or liquid media, e.g. air, gas, vapour, water or oil

• Up to 200 °C media temperature

• Pt 100 or Pt 1000 sensing element

• 1 or 2 elements

• Can be used with 2 or 3 wire connections

• Gold plated male and female connector

• With interchangeable measuring insert

AI216786443991en-000201

TmTpT

Features

Description

Measuring range

-50 – 200 °C

Sensing element

1 or 2 x Pt 100, 1 or 2 x Pt 1000

Protection tube

ø8 × 1 mm

Permissible media velocity Air

25 m/s

Water

3 m/s

Process connection

G ¼

G ¼ A

G ³⁄₈ A – M18

G ¾ A

M24

Max. tightening torque

25 Nm

50 Nm

100 Nm

Type

Protection tube

Indicative response times

Water 0.2 m/s

Air 1 m/s

0.5t0.9t0.5t0.9

MBT 3250 with interchangeable measuring insert

ø8 × 1 mm

9 s

33 s

95 s

310 s

Features

Description

Sensor tolerance

EN 60751 Class B: ± (0.3 + 0.005 × t)

t = temperature of medium, numerical value

Vibration stability Shock:

100 g / 6 ms

Vibrations:

4 g sine function 5 – 200 Hz, measured acc. to IEC 60068-2-6

Enclosure

IP65 according to IEC 60529

Cable entry EN 175301-803

Pg 9, Pg 11 or Pg 13.5

Features

Description

Protection tube in contact with media

W.no. 1.4571 (AISI 316 Ti)

Process connection

W.no. 1.4404 (AISI 316 L)

Extension length

W.no. 1.4571 (AISI 316 Ti)

Union

Nickel plated brass

Gasket

Silicone

Plug En 175301-803

PA 6.6 (max 125 °C)

Max. temperature (Ext. length “None”) Plug EN 175301-803

Max. load on protection tube (ø8 × 1, ø10 × 2) acc. to EN 175301-803

Danfoss

93Z99

Insertion length

Media temperature

Temperature for electric plug

Ambient temperature

Temperature sensor, Type MBT 3250

Product specication

Technical data

Table 1: General data

Table 2: Connection

Table 3: Response time

Table 4: Mechanical and environmental specications

Table 5: Materials

Table 6: Max. temperature and load

ABCDE

Without extension length

With extension length

Extension length

Insertion length

Protection tube

Process connection

Union

Gasket

Plugs

34,5

Process connection

G ¼

G ¼ A – G ½ A

G ³⁄₈ A – M18

G ¾ A

M24

Width across

ats

HEX 22

HEX 27

HEX 32

Danfoss

93Z78A

Temperature sensor, Type MBT 3250

 NOTE:

For extension length = 50 mm no limitations up to 200 °C media temperature and 90 °C ambient temperature.

Dimensions

Table 7: Extension length

NOTE:



• Tightening torque for the mounting screw at the rear end of the electrical connection plug: 25 Ncm

• Tightening torque for the union (position “E”): 17 Nm

Table 8: Gasket and Plugs

Units: mm

Table 9: Connection

Electrical connection

Figure 1: Electrical connection

2-wire, 3 terminals (Ground not connected)

Type MBT 3250

Sensor

– –

Measuring range, sensor eleme nt Tolerance

-50 – 200 °C

0 0

EN 60751 Class B

Other

Sensing eleme nt

1 × Pt 100

1 × Pt 1000 (Class B only)

Process conne ction

2 × Pt 100

2 0

None

2 × Pt 1000 (Class B only)

3 1

Other

9 2

Protection Tube, W.nr. 1.4571 (AISI 316 Ti)

G 3/4 A

Acid-proof steel, ø8 × 1mm

0 5

M18 × 1.5

Other

9 9

Other

Extension length

None

50 mm

Insertion length Electri cal Connections

050 mm 050

EN175301/803 excl. female plug

080 mm 080

EN175301/803 plug Pg 9 (IP65)

100 mm 100

EN175301/803 plug Pg 11 (IP65)

150 mm 150

EN175301/803 plug Pg 13,5 (IP65)

200 mm 200

ITT Canon 4 pins Au

250 mm 250

EN175301/803 GL. plug Pg 13,5 (IP65) Sn pins

xx0 mm xx0

EN175301/803 Pg 9–4 pins without earth (IP65)

EN175301/803 Pg 11–4 pins without earth (IP65)

Other

Preferred versions

G 1/4 A

G 1/2 A

1/2 – 14 NPT

Temperature sensor, Type MBT 3250

Ordering

Figure 2: Ordering for MBT 3250

File name

Document type

Document topic

Approval authority

084R1022.01

Manufacturers Declaration

China RoHS

Danfoss

097R0004.01

Manufacturers Declaration

RoHS

Danfoss

087R0017.00

Manufacturers Declaration

Simple apparatus

Danfoss

OC.C.32.004.A 75977

Measuring - Performance Certicate

–

GOST

Temperature sensor, Type MBT 3250

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 10: Certicates, declarations, and approvals

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Danfoss MBT 3250 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual