Martel Electronics LC-110/H - Manual (Page 3)

1
Introduction
The Martel LC-110 and LC-110H are mA (loop) calibrators designed
to be simple to use and to offer the highest accuracy of any loop
calibrator in their class. The LC-110H differs from the standard
LC-110 in that it incorporates HART communications and supports a
select subset of the HART universal and common practice
commands. This unique feature allows the LC-110H to be used as
both a loop calibrator and basic function communicator.
The calibrator supports the following functions:
• Current measurement and sourcing, including selectable 24V
supply
• Voltage measurement
• Valve test capability
• Selectable HART 250 Ω loop resistor
• Output step and ramp
The calibrator has the following features:
• Large easy to read display for measurements and data entry
• Digital knob with selectable decade control for quick and easy
data entry
• Interactive menus
• Input and output jacks protected by self resetting fuses
providing protection to 240VAC
In the communicator mode the user is able to read basic device
information, perform diagnostic tests, and trim the calibration on most
HART enabled transmitters. In the past this could only be done with a
dedicated communicator.
The LC-110H can also be used as a HART modem, allowing PC host
applications to perform more sophisticated diagnostics and setup.
HART format commands from the host are passed to the transmitter,
and responses are passed back.
1.1 Customer Service
Corporate Office:
www.martelcorp.com
e-mail: [email protected]
Tel: (603) 434-1433 800-821-0023 Fax: (603) 434-1653
Martel Electronics
3 Corporate Park Drive
Derry, NH 03038