Product guide

Humidity and Dew-Point Instruments
© Michell Instruments 2009-2011
62
Sensors
I7000 & I7400
Electrical Connections
Pin Digital output
1 Output frequency Characterized by a variable frequency pulse train in function of the relative
humidity.
2 Common Ground
3 Power Supply V + (5 V DC)
4 Output RH + 0-1 V DC (I7000) (Output 0.2-1 V DC (I7400)
5
Pt100
6 % RH=[(T on/T off)*2049-1]/16.12
7
T on T off
5 <f<30 Hz
Order Codes
I7000 & I7400 - Interchangeable Module for Relative Humidity
Feature Item Description
Type I7-0-00-0 0-1 V without temp confi guration
I7-0-00-1 0-1 V with direct Pt100
I7-4-00-0 0.2-1 V without temp confi guration
I7-4-00-1 0.2-1 V with direct Pt100