11 of 15
The parameters listed below are normally used only during factory setup. However, they can be
accessed by pressing and holding the NEXT button while simultaneously pressing the UP arrow button.
CAUTION:
Accessing these parameters can result in at least momentary
disruption of the transmitted 4-20 mA signal as described below under
Zero Adj and Span Adj.
Version
Software/Hardware Revision number
Cal Temp
Calibration Temperature
LowCutoff
Temperature below which the unit will not read.
HART
ADDR
When using HART in multidrop mode, this parameter sets the HART address on the bus.
LOOP CTL 0 = normal (current follows temperature); 1 = multidrop (loop set to 4.00 mA); 2 = manual.
When set to 2 (manual), current can be set by changing the LOOP mA parameter above.
Note:
LOOP CNTRL = 2 is used for testing purposes only and reverts to 0 on
device reset or cycling power.
Zero Adj
When accessed, current loop immediately transmits 0 scale or 4 mA. Adjust parameter up
or down until device measuring the output current indicates exactly 4.00 mA.
CAUTION:
Accessing this parameter causes the temperature measurement to STOP
transmitting and instead transmits Zero Scale.
Be sure that any equipment
connected to this transmitter is prepared for the disruption in the temperature
signal level before accessing this parameter
.
Span Adj
When accessed, instrument immediately transmits full scale or 20 mA. Adjust parameter
up or down until the device measuring the output current indicates exactly 20.00 mA.
CAUTION:
Accessing this parameter will cause the transmitter to transmit Full
Scale Temperature.
Be sure that any equipment connected to this
transmitter is prepared for the disruption in the temperature signal level
before accessing this parameter.
ALRM
ACTN
Alarm Action – This controls how current loop responds to a detected diagnostic alarm.
0 = drive high (22.0 mA); 1 = drive low (3.6 mA); 2 = hold; 3 = ignore.
NOTE:
This alarm action is based only on internal consistency checks that are
used to detect hardware failures. If a diagnostic alarm is detected, check the
wiring between the fiber optic adapter and the electronics module and/or consult
the factory. The alarm action can be tested by disconnecting the red or green
wire to the fiber optic adapter while the pyrometer is looking at a hot reactor or
other incandescent light source.
DAMPING
The measurement time constant in seconds. Higher numbers provide more smoothing.
MemCmd
Factory Use Only
3.2 Initial Startup
1.
Confirm the nozzle isolation valve is closed. This prevents any foreign matter from collecting on the
viewport window during refractory dry out, curing and hydrocarbon firing.
2.
Establish steam flow to the Steam Jacketed Assembly and ensure that the steam trap is functioning
properly. This assures that condensation will not accumulate on the viewport.
3.
After verifying that the Steam Jacketed Lens Assembly is up to temperature, open the isolation valve.
Note:
It is important to keep the isolation valve closed until operating temperature is
reached in order to prevent sulfur from condensing and solidifying on the window.
