Data Sheet
Temperature sensor
Type MBT 3252
Heavy-duty industrial application temperature sensor.
Heavy-duty temperature sensor for controlling cooling water, lubrication oil, hydraulic oil and refrigeration plants within general industry.
This temperature sensor is based on a standardised Pt 100 element, which gives a reliable and accurate measurement.
The changeable measuring insert is equipped with a silicone cable, which makes the sensor very resistant towards vibrations.
The MBT 3252 is equipped with a B-head as standard.
If needed, a transmitter (MBT 9110) can be ordered as an integrated part of the MBT 3252 sensor.
Features:
• Gaseous or liquid media, e.g. air, gas, vapour, water or oil
• Resistance or 4 – 20 mA signal
• Up to 200 °C media temperature
• Pt sensing element with silicone cable
• Can be used with 2 or 3 wire connections
• Interchangeable measuring insert
• Available with built-in transmitter
• Also available in a marine version as MBT 5252
AI201986428009en-000301
Temperature sensor, Type MBT 3252
Product speci€cation
Technical data
Table 1: General data
Features |
|
Description |
Measuring range |
|
-50 – 200 °C |
Sensing element |
|
Pt 100 |
Protection tube |
|
ø10 × 2 mm |
|
Air |
25 m/s |
|
||
Permissible media velocity |
Steam |
25 m/s |
|
Water |
3 m/s |
|
|
|
Table 2: Connection
Process connection |
G ½ A |
Max. tightening torque |
50 Nm |
Width across …ats |
HEX 27 |
|
|
Table 3: Response time
|
|
|
|
Indicative response times |
|
|
|
Type |
Protection tube |
Water 0.2 m/s |
|
|
Air 1 m/s |
|
|
|
t0.5 |
t0.9 |
t0.5 |
t0.9 |
|
MBT 3252 |
ø10 × 2 mm |
14 s |
42 s |
110 s |
390 s |
|
|
|
|
|
|
|
Table 4: Mechanical and environmental speci€cations
Features |
Description |
|
|
Max. temperature(1) |
Ambient: |
90 °C for sensors without temperature transmitter |
|
Transmitter: |
85 °C for sensors with temperature transmitter |
||
|
|||
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 B-head |
Pg 16 |
|
|
|
|
|
|
Temperature transmitter MBT 9110 |
Supply voltage: |
8 – 35 V DC |
|
Output: |
4 – 20 mA |
||
|
|||
|
|
|
(1)The temperature of the transmitter is in…uenced by media temperature, ambient temperature and ventilation in the surroundings. If the temperature of the transmitter exceeds the max. allowed temperature the, transmitter must be placed in a separated enclosure, as described in the separate data sheet for MBT 9110.
Table 5: Materials
Features |
Description |
|
Protection tube in contact with media |
W.no. 1.4571 |
(AISI 316 Ti) |
Process connection in contact with media |
W.no. 1.4404 |
(AISI 316 L) |
Extension length |
W.no. 1.4571 |
(AISI 316 Ti) |
Union nut |
Nickel plated brass |
|
Connection head |
Die cast aluminium |
|
|
|
|
© Danfoss | Climate Solutions | 2021.02 |
AI201986428009en-000301 | 2 |