Pressure Systems 9046 - Manual (Page 27)

Pressure Systems, Inc. Model 9046 User’s Manual
Page 21 www.PressureSystems.com
3.0 Calibration
Calibration consists of offset correction.
Implement offset correction (automatically calculate and set offset coefficient) on a per channel
basis using the ‘h’ command. Accurately measure the temperature of the select thermocouple
sensor for use in the offset correction calibration. When input to the ‘h’ command, the
appropriate offset coefficient is calculated and applied to the selected sensor channel. This
value is initially stored in volatile memory.
The offset coefficient is manually accessible via the ‘v’ and ‘u’ commands with coefficient index
00. The w07 command commits all of the aforementioned parameters to nonvolatile memory.
Note
h commands use bit-position format of addressing as follows:
USB 0000 0000 0000 1000 LSB would represent channel 4,
and would be expressed in the h command as 0008.
Channel 16 & 6 would be represented as USB 1000 0000
0010 0000 LSB or in an h command as 8020.
Note
When the ‘v’ command is issued to set the sensor type for a
channel, the zero and offset coefficients for the channel are re-
initialized to the default values of 0.0 and 1.0 respectively.