Table of Contents
Advertisement
12.0
Performance
Sampling Rates
The IR400 samples each detector at 1 msec intervals.
Power-up
On power up, the IR400 executes a self-test procedure, which requires approximately 15 seconds.
During this time, the analog output is set to 3.5mA. After the self-test is satisfactorily completed, the unit
sets the PV to a value representing the mode of the instrument.
Device Reset
The IR400 cannot be reset by any command. The unit only resets when power is cycled.
Self-Test
The IR400 goes through a self-test upon power cycle. Should any of the tests fail, the unit immediately
reports a fault condition.
Command Response Delay
The IR400 responds as follows:
Busy and Delayed-Response
The IR400 does not use delayed-response times.
Long Messages
The largest data field used by the IR400 is in response to Command 20 & 22 (Read/Write Long Tag):
34 bytes including the two status bytes.
Non-Volatile Memory
The IR400 uses EEPROM to hold the device's configuration parameters. New data is written to this
memory immediately on execution of a write command.
Operating Modes
The IR400 reports percent of lower explosive limit detected while in RUN mode. Various other modes
are used to support the calibration of the instrument.
Write Protection
The IR400 does not support any write protection mode.
Response Type
Response Time
Minimum
20 ms
Typical
50 ms
Maximum
100 ms
Table 7: Command Response Times
27
Model IR400 HART
Hide quick links:
Advertisement
Chapters
Table of Contents
Need help?
Do you have a question about the IR400 and is the answer not in the manual?