Pressure Systems 9022 Bedienungsanleitung PDF herunterladen (Seite 59)

www.meas-

spec.com

Measurement Specialties Inc. NetScanner System (9016, 9021, & 9022) User’s Manual

3 - 26

CALCULATE AND SET GAINS (Command ‘Z’)

Purpose: Instructs a module to calculate new gain coefficients, with either full-scale

pressure (or a specified pressure) applied to the specified channels. These new

coefficients update part of the module’s internal calibration coefficient database,

used to convert any subsequent raw data (from any of the specified channels) into

engineering units data. The new gain values are also returned in the response.

This command is sometimes called a Span or Span-only calibration.

Command

“Zpppp[ vv.vvvv]”

‘Z’ is the command letter

‘pppp’ is the position field

‘ vv.vvvv’ is an [optional] pressure value, preceded by a space character.

Response

“g.gggg .. g.gggg”

‘g.gggg’ are the actual gain data values returned, each preceded by a space.

Description: The position field may have 0 or 4 characters. If no position field is specified,

gain coefficients for all module input channels will be calculated and returned. If

a position field is specified, gain coefficients for only the channels whose bits are

set (=1) will be calculated and returned. If the optional pressure value (vv.vvvv)

is specified, the position field must be 4 characters, even when all channels are to

be specified. Gain values are returned in the response in order of highest specified

channel to lowest specified channel, with data formatted per an implied decimal

format (f=0).

Normally this command requires that the exact full scale input pressure be applied

to the affected channels. The optional pressure value [ vv.vvvv] allows the user to

specify any suitable upscale pressure in the current engineering units. For best

results, pressures in excess of 90% of full scale should be applied. A leading

space character must precede the pressure value parameter.

The desired calibrating pressure must be applied to all of the specified channels

and allowed to stabilize before this command is executed. Such a pressure is

presumably generated by a separate model 903x calibrator module or suitable

user-supplied substitute.

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 193 194

Keine Kommentare

Pressure Systems 9022 Bedienungsanleitung Seite 59