Cell Verification And Span Adjustment; Calib Key - Ametek 5000 Instrument Manual

Cell Verification and Span Adjustment

Cell verification is achieved by measuring the moisture content of the reference gas
after a known quantity of moisture has been added by the moisture generator. The
measured value is compared to the value stored in the computer memory. Refer to the
Configuration Data Sheet supplied with the controller for the verification moisture
concentration specific to the analyzer (Moist_Gen).
The Verification/Span Adjustment function can be invoked on demand (see Flow
Moisture Gen, below) or configured to run automatically at a user-set interval. (See Set
Auto Cal Time later in this section.) The calibration cycle includes equilibration (stabi-
lization) time for the moisture generator gas flowing through the cell, cell frequency
measurements (ƒ
operation. Refer to: Software Configuration for information on setting the calibration
cycle timers.

Calib Key

With the normal operation screen displayed, press the Calib key to call up the menu. Use the up and
down arrow keys to scroll through menu items. When the desired item is selected, press Enter and
proceed as follows:
CALIB
CANCEL ENTER
3-10 5000 Multi Point Moisture Analyzer
and ƒ ), automatic span adjustment (optional), and return to normal
cal ref
Start Auto Cal Initiates automatic calibration cycle with or without span adjust-
Flow Moisture Gen Initiates completely manual calibration cycle with span
ment. At the "Engage Auto Span?" prompt, press Enter
and use maintenance level password to run cal cycle
with span adjustment or press Cancel to run cal cycle
only. Display will return to normal operation screen
when cycle is complete. If calibration cycle is to include
a span calculation and adjustment, the new span value
will be checked against the Max_Cal_Err and Max_Span
setpoints. (See Alarm Button later in this section.) If the
new value exceeds the setpoint, a system alarm will oc-
cur and CAL ERROR will appear on the bottom line of
the display (in the case of error span adjustment will not
occur). Note that both tests may be disabled by making
the setpoints equal to zero.
adjustment. Display will read, "Wait for instrument to
stabilize, then Enter = Span, Cancel = Quit." Note that
the manual cycle does not invoke system timers; opera-
tor must allow time for equilibration before and after cal
cycle. After equilibration, press Enter to proceed with
cal and span adjustment or Cancel to return to normal
operation.