12
8012707/ZVF9/V2-1/2019-04 | SICK
O P E R A T I N G I N S T R U C T I O N S | GM32
Subject to change without notice
2
PRODUCT DESCRIPTION
An internal swivel element with two reference filters and an NO-filled cell is swiveled in
during the check cycle in addition to the zero point reflector and the reference value or
concentration value measured. These control values are scaled to 70% of the selected
measuring range.
Maintenance request
is signaled if the deviation from the setpoint value is > ±2% of the
FS.
Fig. 1: Check point
●
Output of measured values during the check cycle: Last valid measured value.
●
Signal during the check cycle:
Not_measuring
. (Optionally digital output or OPC
interface).
●
The determined zero and reference values can be output on analog outputs depending
on the parameter settings:
– Directly after the check cycle.
– On request (via a digital input, option).
– Signal during output:
Output_control_values
. (Optionally digital output or OPC
interface).
– First output of zero values for 90 s.
– Then output of reference values for 90 s.
●
The zero and reference values of the last check cycle are displayed in SOPAS ET (menu:
Diagnosis/Check values
).
The required QAL3 values can be read there.
●
NO cell check failed:
– NO cell results are output on all interfaces.
– “0” is output on all interfaces instead of the zero and reference values.
– The analog output shows “Live Zero”.
– Zero and span point measurement results are irrelevant.
Measuring
Zero point
Check
Zero point
reflector
Swivel
element
Zero point
Control
point
(70% fsc)
Data recorder
