Description
Issue 5 - June 2005 Page 18 of 64 Pages
Display of measuring range, gas and unit
The front cover of the controller has a window n which to display the measured gas,
range and unit. A label showing the required information can be inserted in the slot
inside of the front cover. Pre-printed and blank labels are at the end of this manual.
Pellistor board
The pellistor board supplies a constant current to the sensor and amplifies the signal
from the sensor.
To fit the pellistor board to a Regard-1 4-20:
• Remove all the links from SK2 on the main circuit board
• Fit the pellistor board onto SK2
The pellistor board has a four-pole switch and three potentiometers:
• SW1 Sets sensor current range and amplifier range
• VR1 Sets zero point
• VR2 Sets gain (span)
• VR3 Sets sensor current
SW1
VR3
VR1
VR2
To Next Page
Loading...
