Martel Electronics LC100 User Manual

LC100

Loop Calibrator

Table of Contents

1. Introduction

1.1 Customer Service . . . . . . . . . . . . . . . .1

1.2 Unpacking . . . . . . . . . . . . . . . . . . . . .2

1.3 Safety Information . . . . . . . . . . . . . . . .2

2. Nomenclature . . . . . . . . . . . . . . . . . . . .5

3. Getting Started

A. Battery Save Feature . . . . . . . . . . . . . .6

B. HART™ Resistor Setup . . . . . . . . . . . . .6

4. Basic Operating Modes

A. Milliamp Source . . . . . . . . . . . . . . . . . .8

B. Milliamp Simulation . . . . . . . . . . . . . . .9

C. Milliamp Measure . . . . . . . . . . . . . . . . .9

D. Milliamp Measure with Loop Power . .10

E. Voltage Measure . . . . . . . . . . . . . . . . .10

5. Advanced Operating Modes

A. Auto Step/Ramp Mode . . . . . . . . . . . .11

B. Percent Error Mode . . . . . . . . . . . . . .12

C. Min/Max Datalogging . . . . . . . . . . . . .13

6. Maintenance

A. Battery Selection . . . . . . . . . . . . . . . .14

B. Input Protection . . . . . . . . . . . . . . . . .14

C. Calibration . . . . . . . . . . . . . . . . . . . . .14

7. Specifications . . . . . . . . . . . . . . . . . . .15

8. Warranty . . . . . . . . . . . . . . . . . . . . . . . .16

1

LC100

1. Introduction

The Martel LC100 is designed to be a complete
4 to 20mA current calibrator for both trouble­shooting and calibrating current loops. Very
high accuracy combined with several unique
features makes the LC100 an easy to use and
highly flexible calibration tool.

The LC100 can source, simulate (2-wire) or
measure loop currents up to 24mA. It can also
measure process signal voltages up to 28VDC
with the same 0.015% of reading accuracy. A
digital knob user interface combined with
decade output control allows the user to make
both large or small output changes with ease.
Several unique functions such as the auto­step/ramp modes allow the LC100 to test valve
actuators for smoothness and proper operation.

The LC100 can also power two-wire transmit­ters while simultaneously reading the resultant
loop current. All readings are displayed in both
milliamps and % of span.

1.1 Customer Service

Corporate Office:

www.martelcorp.com

e-mail: [e-mail]

Tel: [phone]

Fax: [phone]

Martel Electronics

3 Corporate Park Drive

Derry, NH 03038

2

1.2 Unpacking

Remove the packing list and verify that all
equipment has been received. If there are any
questions about the shipment please call Martel
Electronics at 1-800-821-0023. When the ship­ment is received inspect the container and
equipment for any signs of damage. Note any
evidence of rough handling in transit.
Immediately report any damage to the shipping
agent.
NOTE: The carrier will not honor any claims
unless all shipping material is saved for their
examination. After examining and removing
contents, save packing material and carton in
the event reshipment is necessary.

1.3 Safety information

Symbols Used

The following table lists the International
Electrical Symbols. Some or all of these sym­bols may be used on the instrument or in this
manual.

Symbol Description

AC (Alternating Current)

AC-DC

Battery

CE Complies with European Union
Directives

DC

3

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual
(Important Information)

Off

On

Canadian Standards Association

The following definitions apply to the terms
“Warning” and “Caution”.

• “Warning” identifies conditions and actions
that may pose hazards to the user.

• “Caution” identifies conditions and actions
that may damage the instrument being used.

Use the calibrator only as specified in this man­ual, otherwise injury and damage to the calibra­tor may occur.

4

Warning

To avoid possible electric shock or

personal injury:

• Do not apply more than the rated voltage.
See specifications for supported ranges.

• Follow all equipment safety procedures.

• Do not use the calibrator if it is damaged.
Before you use the calibrator, inspect the
case. Look for cracks or missing plastic. Pay
particular attention to the insulation surround­ing the connectors.

• Select the proper function and range for your
measurement.

• Make sure the battery cover is closed and
latched before you operate the calibrator.

• Remove test leads from the calibrator before
you open the battery door.

• Inspect the test leads for damaged insulation
or exposed metal.

• When using the probes, keep your fingers
away from the probe contacts. Keep your
fingers behind the finger guards on the test
leads.

• Do not use the calibrator if it operates abnor­mally. Protection may be impaired. When in
doubt, have the calibrator serviced.

• Do not operate the calibrator around explo­sive gas, vapor, or dust.

• Disconnect test leads before changing to
another measure or source function.

• When servicing the calibrator, use only speci­fied replacement parts.

• To avoid false readings, which could lead to
possible electric shock or personal injury,
replace the battery as soon as the battery
indicator appears.