Brooks Instrument QMBM - Manual (Page 19)

QmB Series IP40, IP66, IP66XP
Section 1 Introduction
1-7
Installation and Operation Manual
X-CM-QmB-eng
Part Number: 541B029AAG
June, 2011
Signal Specifications: Pin 4 4-20 mA output < 500 ohm series resistance
Pin 2 0-5 Vdc output > 1K ohm load
Pin 13 4-20 mA output < 500 ohm series resistance
0-5 Vdc output > 1K ohm load
Pin 7 4-20 mA input 250 ohm input impedence
0-5 Vdc input 200 ohm input impedence
Pin 12 Valve override input > 50K ohm input impedence
Pin 3 Alarm output 100 mA maximum current sink
Power Requirements:
Voltage:
+14 to 27 Vdc (12) .
Nominal Current: Controller: 300 mA to 400 mA
Meter: 100 mA to 150 mA
Maximum Current: Controller: 715 mA @ 14 Vdc
Meter: 470 mA @ 14 Vdc
Maximum Power: Controller: 10.0 W
Meter: 6.6 W
Additional Functions and Outputs
Damping:
Factory set time constant from 0 to 10 seconds.
Alarms and Warnings: Alarms accessed via HART or the Brooks Service Tool can be configured
to monitor the following variables
(13) :
• Mass Flow
• Density
• Volumetric Flow
• Temperature
• Slug Flow
• Diagnostic Failure
• Setpoint Deviation
• Valve Drive
LED's (14) : 'STAT'
solid green: system operative.
solid red: system fault.
'AL'
flashing green: warning
flashing red: alarm
Pushbutton (15) : 'ZERO' setting pushbutton.
Notes (continued)
(11) The device temperature is affected by the ambient and process temperature as well as internal warming when
the device is powered. The device should be maintained in the specified temperature range at all times.
A temperature rise of up to 20
o C (68 o F) from internal heating can occur in an open environment where
ambient temperature is 23 o C (73 o F).
(12) Ensure the minimum required voltage and current is available at the mass flowdevice taking into consderation
any losses in the interconnecting cable.
(13) If the Quantim is configured for HART ® communication protocol, only 4-20 mA I/O option is available.
(14) IP66 and IP66XP Series external housing cover must be removed to gain access to status LED's.
(15) IP66XP series external housing cover must be removed to gain access to zero push button.