Measurement Specialties 9116 user manual Pnt pppp.pppp, Response Pppp.pppp pppp.pppp

Pressure Systems, Inc. Model 9116 User’s Manual

Command ‘C’— Sub-command Index 01: Collect Data for a Calibration Point

This sub-command has two (2) additional required parameters.

Command “C 01 pnt pppp.pppp”

‘C’ is the command letter.

‘01’ is the sub-command index (ii) for Collect Data

‘pnt’ identifies a particular calibration point that will be supplied. It must be between 1 and npts, where npts was a parameter of the previously executed Configure & Start (‘00’) sub-command.

‘pppp.pppp’ is the pressure value (in current EU) that is actually applied currently to the module’s transducers by a precision calibrator.

NOTE: all parameters are separated by a space.

Response	“pppp.pppp [pppp.pppp]...”
	The actual measured pressure values (in current EU) from each affected
	channel of the module (highest numbered specified channel first, lowest
	numbered specified channel last, as per the pppp bit map parameter of the
	Configure & Start (‘00’) sub-command. The decimal response datum
	format (format 0) is always used.

Description: This sub-command (to be executed two or more times) carries out the data collection phase of the Multi-Point Calibration function for exactly one (1) calibration point (i.e., per parameter pnt). Each execution applies a specified pressure value; then collects, averages, and stores the data for that calibration point. It must be repeated until all pressure points, as specified by the npts parameter of the original Configure & Start (‘00’) sub-command, are applied and their data collected. For each particular point, enter the sub-command after that point’s pressure value has been properly applied to the module, and that value is stable (unchanging). Pressure may be applied to either the Cal or Run ports, as necessary. Use a Model 903x Calibrator or some other suitable precision pressure source to generate the pressure.

It is not necessary to enter the two or more calibration points in strict numerical order (i.e., 1, 2, ... npts). Any convenient entry order is allowed, though each point’s actual pressure value must be correctly stated (with the pppp.pppp parameter) when executed. Previously entered points may be reentered if it is necessary to account for hysteresis. However, all the points specified by the pts parameter of the Configure & Start (‘00’) sub-command must be supplied before the final Calculate and Apply (‘02’) sub-command can be executed, else an error will result.

Page 34 www.PressureSystems.com