KMI15/1 T/R NXP Semiconductors, KMI15/1 T/R Datasheet - Page 7

• Manufacturer Part Number: KMI15/1 T/R
• Description: Speed Sensors MAGNETIC FIELD SENSR
• Manufacturer: NXP Semiconductors

Specifications of KMI15/1 T/R

• Maximum Operating Temperature: 85 C
• Supply Voltage: + 16 V
• Operating Supply Voltage: - 0.5 V to + 16 V
• Minimum Operating Temperature: - 40 C
• Features: Detects rotational speed of ferrous gear wheels and reference marks
• Maximum Output Current: 14 mA
• Other names: KMI15/1,115

Philips Semiconductors
Mounting conditions
The recommended sensor position in front of a gear wheel
is shown in Fig.15. The distance ‘d’ is measured between
the sensor front and the tip of a gear wheel tooth.
The KMI15/1 senses ferrous indicators like gear wheels in
the
sensor); see Fig.2. The effect of incorrect mounting
positions on sensing distance is shown in Figs 11, 12 and
13. The symmetrical reference axis of the sensor
corresponds to the axis of the ferrite magnet.
Environmental conditions
Due to eddy current effects the sensing distance depends
on the tooth frequency (Fig.17). The influence of gear
wheel module on the sensing distance is shown in Fig.16.
2000 Sep 05
handbook, halfpage
Integrated rotational speed sensor
diameter
pitch = module
module
pitch
y direction only (no rotational symmetry of the
=
----------------------------------------- -
number of teeth
pitch diameter
Fig.10 Gear wheel dimensions.
pitch
MRA964
7
Gear Wheel Dimensions
Note
1. For conversion from ASA to DIN: m = 25.4 mm/DP;
German DIN
z
d
m
p
ASA; note1
PD
DP
CP
handbook, halfpage
SYMBOL
V
Fig.11 Sensing distance as a function of positional
p = 25.4 mm
CC
(mm)
d
= 12 V; f
4
2
1
3
0
0
tolerance in the y-axis; typical values.
d
t
number of teeth
diameter
module m = d/z
pitch p =
pitch diameter (d in inch)
diametric pitch DP = z/PD
circular pitch CP = /DP
= 2 kHz; module = 2 mm; pitch diameter = 100 mm.
CP.
1
DESCRIPTION
y
m
2
Product specification
3
y (mm)
KMI15/1
MRA998
mm
mm
mm
inch
inch
inch
4
UNIT
1