Brooks Instrument MT3810 - Manual (Page 45)

3-7
Installation and Operation Manual
X-VA-MT3810-eng
Part Number: 541B050AHG
December, 2008
Model MT 3810
Section 3 Operation
Function Keys
Use the four function keys, marked F1 through F4 located below the LCD
to perform software functions as indicated by the dynamic labels. Different
labels appear over the four function keys as you move among the various
menus.
On-line Menu
When connected to a HART compatible device, simply press the ON Key
to display the On-line Menu. This menu contains the most critical informa-
tion about the connected device and your measurement including:
• Model Number
• User-defined Tag Number
• Flow Rate Units of Measure
• Analog Output LoRange
• Analog Output HiRange
a. Simulation Mode
The HART Communicator provides a mode that allows you to simulate an
on-line connection to a specific HART compatible device. The simulation
mode is a training tool that enables you to become familiar with a device
before configuring it in a critical environment. Access to the simulation
mode is through the utility menu.
For more details and instructions on use of the Emerson Model 275
Communicator please contact Brooks Service Department Representative
or your local Emerson office.
b. Recalibration of Analog Transmitter Output (spanning high and
low)
At any time after factory calibration, shipment, installation, or service, the
SMM transmitter can be recalibrated by overwriting any of the previous
calibration point-pairs, assuming that the user can provide a series of
accurate rates of flow through the meter. If preferred, the meter with
transmitter may be returned for recalibration at the Brooks Service Depart-
ment for a fee.
c. Basic Transmitter Setup Parameters
Refer to Figures 3-1 and 3-2. These are meter identification parameters
set prior to shipment of the meter.
Flowmeter Identification: Model Number, Serial Number, Tag Name
Flowmeter Configuration: Low Flow Cutoff, Calibration Factor, Flow Rate
Units of Measure
Transmitter Analog Output: Analog Output HiRange, Analog Output
LoRange
d. Optional Programmable Alarm and Pulse Output Parameters and
Features
Alarm Contact Output: HiLimit, LoLimit
One or two digital outputs are available for a alarm signals. Contact output
polarity is configurable as Normally Open (N.O.) or Normally Closed
(N.C.). The alarms may be set at the minimum and maximum flow rate or
at any other preferred high and low limits. The units of measure of the
alarm limits is the same units of measure as the process variable itself.