Panametrics HydroProII, User Manual

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HygroPro
II
User's Manual 75
Appendix A. HygroPro
II
HART
®
Field Device Specification
A.11 Performance
A.11.1 Sampling Rates
All flow rates are updated at least once 1 time per second.
A.11.2 Power-Up
The transmitter needs at most 55 seconds to boot after it is energized. The analog output will default to 3.6mA until
the PV is available.
A.11.3 Reset
The transmitter does not support Command 42 ("Device Reset") to reset itself.
A.11.4 Self-Test
The self-test procedure is executed at power up.
A.11.5 Command Response Times
A.11.6 Busy and Delayed-Response
The transmitter may respond with "busy" status if a further command is received while MPU testing is underway.
Delayed-response is not used.
A.11.7 Long Messages
The largest data field used is in the response to Command 183: 21 bytes including the two status bytes.
A.11.8 Non-Volatile Memory
EEPROM is used to hold the device’s configuration parameters. New data is written to this memory immediately on
execution of a write command.
A.11.9 Modes
When the system is in fixed current mode, it will continue measuring, it just will not update the 4-20mA output.
A.11.10 Write Protection
The transmitter has one write protect jumper. When the jumper is present, all commands are available. When the
jumper is absent, neither "write" nor "command" commands are accepted.
A.11.11 Damping
Damping constant is not relevant to this meter.
A.12 Capability Checklist
Minimum 20ms
Typical 50ms
Maximum 150ms
Manufacturer, model and revision
Baker Hughes Panametrics HygroPro
II
, rev. 1
Device type Current Output
HART revision 7.5
Device Description available Yes