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

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