Instruction and Operation Manual
X-CM-QmBS-eng
Part Number: 541B052AHG
June, 2008
Appendix A Dimensions and Specifications
QmBS Sensor / QTA Transmitters
Output option code 7
(Profibus-PA)
Transmitters are registered with the Profibus Organization, and fulfill the
requirements of the Profibus-PA Profile for Process Control Devices.
Input frequency from sensor:
• Mass flow: 20 Hz
• Volume flow: 20 Hz
• Density: 20 Hz
• Temperature: 1Hz
Analog input function blocks:
• Cycle time: Host dependent
• Update rate: 50 milliseconds
• Refresh rate: Host dependent
Siemens Simatic PDM required for configuration.
A-9
Table A-12 FM Transmitter Digital Communications
Table A-13 FM Transmitter Power Supply
Self-switching AC/DC input, automatically recognizes supply voltage.
Complies with low voltage directive 73/23/EEC per IEC 61010-1
Installation (Overvoltage) Category II, Pollution Degree 2.
The transmitter fieldbus circuit is passive, and draws its power from the fieldbus segment. Current draw from the fieldbus
segment is 11.5 mA.
AC power
85 to 265 VAC, 50/60 Hz, 6 watts typical, 11 watts maximum
DC power
18 to 100 VDC, 6 watts typical, 11 watts maximum
At startup, transmitter power source must provide a minimum of 1.5 amperes of
short-term current at a minimum of 18 volts at the transmitter's power input
terminals.
Minimum 22 VDC with 1000 feet of 18 AWG (300 meters of 0.8 mm
2
) power
supply cable
Fuse
IEC 127-1.25 fuse, slowblow
Table A-14 FM Transmitter Environmental Limits
Ambient temperature limits
Operating and storage: –40 to +140 °F (–40 to +60 °C)
Display responsiveness decreases and display may become difficult to read below
–4 °F (–20 °C). Above 131 °F (55 °C), some darkening of the display might occur.
ATEX requires limiting ambient temperature to below 131 °F (55 °C).
Humidity limits
5 to 95% relative humidity, non-condensing at 140 °F (60 °C)
Vibration limits
Meets IEC68.2.6, endurance sweep, 5 to 2000 Hz, 50 sweep cycles at 1.0 g.
