Benelli ZAFFERAN 250, Service Manual

Page: 162 / 187

162
17.2.4.2 Appearance
17.2.4.3 Installation Requirements
Dynamic torque requirement: start the threads by hand and torque it to the required torque with
a dynamoelectric spanner of a speed over 400r/m. You can also screw it down to the required
torque with a spanner by hand. The recommended torques are as follows:
20N·m~25N·m
Static torque
requirement:
The torque required for disassembling the sensor from the engine shall not be over 200% of the
assembling torque.
17.2.4.4 Working Conditions

This sensor is primarily used on water cooled engines;

Normal working temperature: -40
～
266°F
（
continuous working
）

Relative humidity of working: 0
～
100%

Typical working pressure: under the minimum installation torque, the sensor can seal the
engine coolant when the actual pressure is 206.8kPa
（
30psi
）
and the temperature is 275°F

Limit working environment: 1 hour at the highest temperature of 302°F.
17.2.4.5 Storage Environment

Storage temperature: -40°F to 248°F

Indefinite transportation under altitude of 13700m
17.2.4.6 Electrical Environment

Typical working voltage: reference voltage is 5±0.1VDC

Maximum exciting current: when the feature test of the sensor is regulated under any
temperature, its performance shall not be effected by any current lower than 1mA.