TECPEL CL-327A Manual de usuario
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Process Signals Source
1 Introduction
This process signals source (the calibrator in the following) is a handheld, battery-operated instrument that
sources electrical and physical parameters.
Features:
Source DC voltage, DC current, resistance, simulate Transmitter, TC, RTD, frequency, pulse and switch.
Others features:
Big LCD can display the TC/RTD measurement value and mV/Ω corresponding simultaneously; mA and
mA% simultaneously.
TC source terminals and built-in lead connector of same temperature (RJ compensation with
auto-reference joint point)
Manual step source and auto -step and sweeping –step source
Room temperature monitoring under any operation
2 Contact Us
To purchase parts, obtain operation help or address of the vendor or service center nearest to you, please call
us or visit our web (see the bottom page of the Manual).
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3 Standard Accessories
Make sure that the package contains all the accessories listed below. And if you find they are damaged or any
of them is missing, please contact the vendor from which you purchased the product as soon as possible.
Refer to the replacing part list in 15.3 in the Manual if you want to order the replacing parts.
One set of Industrial testing Lead （CL727220）
A set of Testing Lead （Tp727110）
A set of Alligator clip （CC807130）
A quick reference guide
A User's Manual
One Fuse 50mA/250V
One Fuse 63mA/250V
4 Safety Information
For the correct and safe use of the instrument, be sure to follow the cautionary notes stated in this manual
whenever handling the instrument. The Company shall not be held liable for any damage resulting from use of
the instrument in a manner other than prescribed in the cautionary notes.
A Warning identifies conditions and actions that pose hazards to the user; a Caution identifies conditions
and actions that may damage the meter or the equipment under test.
Refer to Table 1 for the explanation of the international electric symbols adopted by the calibrator or the user’s
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manual.
Table 1 Explanations of International Electrical Symbols
EARTH GROUND
WARNING
INFORMATION
Warning
To avoid possible electric shock or personal injury:
Do not apply more than the rated voltage, as marked on the calibrator, between terminals or between any
terminal and earth ground;
Follow all equipment safety procedures;
Do not connect the probe of the testing lead with any live power when the other end has been inserted into
the current jack;
Do not use the meter if it is damaged. Before using the meter, inspect the case. Look for cracks or missing
plastic .Pay particular attention to the insulation surrounding the connectors;
Make sure the battery door is closed and latched before operating the meter;
Remove test leads from the meter before opening the battery door;
Inspect the test leads for damaged insulation or exposed metal. Check test lead continuity. Replace
damaged test leads before using the meter;
When using the probes, keep fingers behind the finger guards on the probes;
Connect the common test lead before connecting the live test lead. When disconnecting test leads,
disconnect the live test lead first.
Do not use the meter if it operates abnormally. Protection may be impaired. When in doubt, have the
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meter inspect.
Do not operate this instrument in areas where inflammable or explosive gases or vapor exists. It is
extremely hazardous to use the instrument under such environments;
Do not operate the meter around explosive gas, vapor, or dust;
Use only type 4 AAA batteries, properly installed in the meter case, to power the meter;
Do disconnect the testing lead before shifting to different source functions;
When servicing the meter, use only specified replacement parts.
To avoid false reading, which could lead to possible electric shock or personal injury, replace the batteries
as soon as the low battery indicator ( ) appears.
Caution
To avoid possible damage to meter or to equipment under test:
Use the proper jacks, functions, and ranges for the mA source operation.
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5 Familiar With the Calibrator
Figure 1 Entire Graph Figure 2 Source Terminals
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5.1 Source Terminals 5.2 Keys
Figure 2 shows the source terminals of the calibrator. Figure 3 shows keys of the calibrator.
Table 2 explains their use. Table 3 explains their use.
Table 2 Source Terminals
Terminal Function
① Source Signals：（+）DcmA
② Source Signals：（+）FREQ、PULSE、
SWITCH
③ Source Signals：（-）DcmA
④ All the common (return ) （-）terminals of
source function
⑤ Source Signals：（-）OHM、RTD
⑥ Source Signals：3W Terminal
⑦ Source Signals：（+）OHM、RTD、DCV、
TC
⑧ Source Signals：4W Terminal
Figure 3 keys
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Table 3 Functions of the keys
No. Name Function
1~5 Source value set key Increment of source set point
6~10 Source value set key Decrement of source set point
11 Source START key Source auto-pulse number, turn on mA auto-stepping or
sweeping function.
12 Source ON key Turn on or off source function
13 Power key Turn on or off the power
14 Backlight key Turn on or off the backlight
15 Source V key Select DC-voltage source function
16 Source RTD key Select RTD source function
17 Source OHM key Select resistance source function
18 Source TC Key Select TC source function
19 Source Key Select pulse number, frequency or switch source function
20 Source mA Key Select mA source function
21 RJ-ON Key In TC source function, turn on or off the RJ compensation
function.
22 T.DISP key In TC/RTD source function, press the key , convert the
room temperature and the mV/Ωvalue ;
In mA source function, press the key , convert the mA%
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value and room temperature;
In others source function, press the key, convert the room
temperature or display is close.
23 Source RANGE Key Select source range
24 Zero Key Set the source value to default.
In pulse source function, set the pulse number.
26
Key
In DCmA source function ,select the auto-wave mode.
In frequency , pulse or switch source function , set the
source amplitude.
27
25/100% Key
In mA source function, select 25% or 100% manual step
output mode.
In pulse number, frequency or switch source, set the
frequency value.
5.3 Display Screen
Figure 4 shows a typical display screen.
a：Source
b：Source Frequency
c：Source Resistance
d：Source Switch
e：Battery level indicator
f： Source function on
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g：Source function off
h：Source DC voltage
i： Source DC current
j： Source TC
k：Source RTD
l： Source Pulse
m：Set -point for source
n：Unit of set -point for source
o：Reference Junction Compensation On
p：Types of TC source
q：Types of RTD source
r：DCmA 25%or 100% manual step source
s：DCmA auto-stepping or sweeping source
t：Source assistance districts Figure 4 typical LCD display
u：Source unit of assistance district
v：Source number of pulses / stort DCmA auto-stepping or sweeping source function
6 Before starting source
Operating Precautions
Precautions for Safe Use of the Instrument
When using the instrument for the first time, be sure to read the instructions given in Section Four
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“Precautions for Safe Use of the Instrument.”
Do not open the instrument’s case.
Contact the vendor from which you purchased the instrument, for a service of inspecting or adjusting the
internal assembly.
In case of failure
Should the instrument begin to emit smoke, give off an unusual odor, or show any other anomaly,
immediately turn off the POWER key. If you are using an Charger, disconnect the plug from the wall outlet.
Also cut off power to the object under test that is connected to the input terminals. Then, contact the
vendor from which you purchased the instrument.
Charger
Use an Charger dedicated to the instrument. Avoid placing any load on the Charger, or prevent any
heat-emitting object from coming into contact with the adapter.
General Handling Precautions
Before carrying around the instrument turn off power to the object under test, and then the POWER key of
the instrument. If you are using an Charger, disconnect the power cord from the wall outlet. Finally, detach
all lead cables from the instrument. Use a dedicated carry case when transporting the instrument.
Do not bring any electrified object close to the input terminals, since the internal circuit may be destroyed.
Do not apply any volatile chemical to the instrument’s case or operation panel. Do not leave the
instrument in contact with any product made of rubber or vinyl for a prolonged period. Be careful not to let
a soldering iron or any other heat-emitting object come into contact with the operation panel, as the panel
is made of thermoplastic resin.
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