Flow Calibration; Digital Inputs And Outputs; Status Outputs - Teledyne 200E Instruction Manual

Operating Instructions

6.7.8. Flow Calibration

The flow calibration allows the user to adjust the values of the sample and ozone flow rates
as they are displayed on the front panel and reported through COM ports to match the
actual flow rate measured at the respective pneumatic ports. This does not change the
hardware measurement of the flow sensors, only the software calculated values. This is one
of the two parameters in the DIAG menu that is retained after you exit the menu. To carry
out this adjustment, connect an external, sufficiently accurate flow meter to the respective
test port (Chapter 11 contains more details on this setup). Once the flow meter is attached
and measures the actual flow, follow this key sequence:
SAMPLE RANGE = 500.0 PPB
< TST TST > CAL
PRIMARY SETUP MENU
SETUP X.X
CFG ACAL DAS RNGE PASS CLK
SETUP X.X SECONDARY SETUP MENU
COMM VARS DIAG
SETUP X.X ENTER DIAG PASS: 818
8 1 8

6.8. Digital Inputs and Outputs

6.8.1. Status Outputs

The status output signals report analyzer conditions through optically isolated transistors
which can sink up to 50 mA of DC current to ground. These outputs can be used with
interface devices that accept logic-level digital inputs, such as programmable logic
controllers (PLC).
Most PLC devices have internal provisions for limiting the current that the output
can draw from an external device. When connecting the M200E status outputs to a
unit that does not have this feature, a 120 Ω external pull-up resistors must be
used to limit the current through the transistor output to 50 mA or less. Refer to
the motherboard schematic 04069 in Appendix D.
72
NOX=X.X
SETUP
MORE
EXIT
Exit at
any time
to return
to main
the
EXIT
SETUP
menu
ENTR EXIT
Choose between
sample and ozone
flow sensors.
Adjust these values until
the displayed flow rate
equals the flow rate being
measured by the
independent flow meter.
Model 200E Instruction Manual
DIAG SIGNAL I / O
NEXT
Repeat Pressing NEXT until . .
FLOW CALIBRATION
DIAG
PREV NEXT
DIAG FLOW SENSOR TO CAL: SAMPLE
SAMPLE OZONE
DIAG FCAL ACTUAL FLOW: 480 CC / M
0 4 8 0
NOTE
ENTR EXIT
.
Exit returns
to the
ENTR EXIT
previous menu
ENTR
EXIT
ENTR accepts the
new value and
returns to the
previous menu
EXIT ignores the
ENTR EXIT
new value and
returns to the
previous menu
044100102 Rev A