100/180 mm PAPERLESS GRAPHIC RECORDER: USER GUIDE
User Guide
Page 73
HA028910
Issue 13 Sep 16
4.3.3 CHANNEL/ALARM CONFIGURATION (Cont.)
INPUT LOW
Enter the lowest value to be applied to the input terminals (e.g. 4.00).
INPUT HIGH
Enter the highest value to be applied across the input terminals (e.g. 20.00).
SHUNT
Allows a shunt resistor value to be entered for input type = mA. Commonly used values are 100 ohms
and 250 ohms. Note that shunt resistors are connected to the input connector. The recorder cannot
detect whether a shunt is fi tted, or if one is, what value it has. Therefore it is the responsibility of the user
to ensure that the ohmic value of any shunt fi tted matches the shunt value entered in this fi eld.
RANGE LOW
Enter the lowest value of the required linearisation range (e.g. 100)
RANGE HIGH
Enter the highest value of the required linearisation range (e.g. 200)
RANGE UNITS
Selectable from degrees Celsius, degrees Fahrenheit, Kelvin or Rankine.
SCALED
This box allows the user to select low and high values and units for a scale. This box must be ticked if
logarithmic scales are to be used.
SCALE LOW
Enter the scale value to correspond with input range low (e.g. 0).
SCALE HIGH
Enter the scale value to correspond with input range high (e.g. 100).
SCALE UNITS
Enter up to fi ve characters of unit descriptor (e.g.%).
Note:
User linearisation tables units,
To set user linearisation table units to temperature units (˚C for example), the Range Units selec-
tion box can be used.
To enter custom units, ‘Scaled’ must be selected. Scale low must be set to Range Low; Scale
high must be set to Range High. The required Units string is entered in the Scale units text
entry box.
OFFSET
Allows a fi xed value to be added to or subtracted from the process variable. Recorder accuracy fi gures
no longer apply if an offset is included.
If the TUS option is fi tted (section 15), Offset can not be applied to channels used as reference channels
(e.g. channels 6, 12, 18 etc.).
