Doc No. IM4772-7
Page 10 of 14
iSense
5
Sensor Input Wiring
In the following section of this document a table has been included which contains a list of all the possible
input sensor types that can be connected to the iSense device. The majority of these sensors will be
connected via the sensor connection terminal (JP1). This terminal has six pins with pin 1, 3 and 5 being
positive, while 2, 4 and 6 are negative.
The Thermistor/RH sensor differs from the other devices as it connects to the 5 Pin Lemo socket (JP5). Both
of these areas of the iSense are shown in Figure 3 below.
Input Type
JP1 Pin Connection
Channel Type
1 channel pulse counter
Pin 1(+) & 2(-)
channel 1
2 channel pulse counter
Pin 1(+) & 2(-)
channel 1
Pin 3(+) & 4(-)
channel 2
1 channel pulse & sync
Pin 1(+) & 2(-)
sync
Pin 3(+) & 4(-)
channel 1
2 channel pulse & sync
Pin 1(+) & 2(-)
sync
Pin 3(+) & 4(-)
channel 1
Pin 5(+) & 6(-)
channel 2
Single Thermistor
Pin 3(+) & 4(-)
channel 1
Dual/Triple Thermistor
Pin 1(+) & 2(-)
Pin 3(+) & 4(-)
channel 1
channel 2
Pin 5(+) & 6(-)
channel 3
Current Clamp
Pin 1(+) & 2(-)
channel 1
Pin 3(+) & 4(-)
channel 2
Pin 5(+) & 6(-)
channel 3
Thermistor and Digital
Pin 1(+) & 2(-)
Pin 3(+) & 4(-)
Thermistor
Digital
Input Type
JP5 Pin Connection
Channel Type
Thermistor/RH
5 Pin Lemo
n/a
Figure 3 Sensor Input Wiring
