Zutemer 77 User manual

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Process calibrator
Multimeter
ZUTEMER 77
User Manual
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www.zutemer.cz
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Table of Contents
Title Page
1 Introduction …………………………………………..…………………………………………… 1
Generalization…………………………………………..…………………………………………… 1
Opening the Meter Case…………………………………………..………………………………… 1
Safety Information…………………………………………..……………………………………… 1
Symbols…………………………………………..………………………………………………… 3
2 Understand Meter…………………………………………..……………………………………… 3
Power-on…………………………………………..………………………………………………… 3
Automatic Power-off…………………………………………..…………………………………… 3
Low Battery Display…………………………………………..…………………………………… 4
Rotary Switch…………………………………………..…………………………………………… 4
Push Buttons…………………………………………..…………………………………………… 4
Screen Display…………………………………………..………………………………………… 5
Input/Output Terminals…………………………………………..………………………………… 7
Using Display HOLD mode…………………………………………..…………………………… 7
3 Operation…………………………………………..…………………………………………… 7
Measuring AC Voltage. …………………………………………..………………………………… 7
Measuring DC Voltage…………………………………………..………………………………… 8

Measuring Resistance…………………………………………..…………………………………… 8
Continuity Test…………………………………………..………………………………………… 8
Diode Test…………………………………………..……………………………………………… 8
Measuring Current…………………………………………..……………………………………… 9
Measuring Loop-circuit Current…………………………………………..………………………… 9
Measuring Loop-circuit Current with 250Ω HART Resistance…………………………………… 10
Using Current Output Function…………………………………………..………………………… 10
Constant Current Output in SOURCE mode………………………………..……………………… 11
Constant Current Output in SIMULATE mode…………………………………………..………… 11
Manual- step Output…………………………………………..…………………………………… 12
Setup Function…………………………………………..………………………………………… 12
4 Maintenance…………………………………………..…………………………………………… 12
General Maintenance………………………………………..……………………………………… 12
Replacing the Batteries………………………………………..…………………………………… 12
Replacing Fuses………………………………………..…………………………………………… 13
5 Specifications……………………………………….…………………………………………… 15
Safety and Conformity……………………………..……………………………………………… 15
General Feature……………………………………..……………………………………………… 15
Detailed Accuracy indicator………………………..……………………………………………… 17

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SectionOne
Introduction
Warning
READ THE MANUAL BEFORE SERVICING THIS
METER
Generalization
The Meter is a battery-operated process maintain
ace field device which combined both digital-parameter
function with process-signal source together.
Functioning as follows:
l Measurement function of TC voltage, DC
voltage , Ohms, DC, Continuity and Diode; Data
reserving function;
l Output function of DC (Constant, Manual-Step
and SIMULATE modes)
l Loop-circuit testing function; Powering the loop
circuit with 24 Voltage and testing the current;
Built-in 250 HART loop resistance
l Safety: complied with IEC 61010-1 safety
requirements for measurement, control and
electronic instruments for lab use.
Opening theMeterCase
Check the product to see whether it is damaged in
the shipment or not. Check the materials to see whether
they are the same as shown in the packing list. Keep the
packing materials for late delivery.
Standard and chosen accessories supplied
are listed as follows. Chosen ones are bought at
purchaser’s options.
Standard accessories
• 1 testing wire(with alligator clips)
• 1 user’s manual
• 2 1.5V (LR6)Alkaline batteries
• 2 63mA/250V Fast Fuses
Safetyinformation
The design, manufacture and test of the Meter reach
the IEC 61010-1 Safety Requirements. This Manual
contains all warnings and safety regulations that must be
followed to ensure safe operation and retain the meter in
safe condition. Read the following instructions before
operation.
Mark in the Meter means the operator needs to
make reference to related parts in the Manual to ensure
safe operation.
Warning indentifies conditions and actions that pose
hazard(s) to the user;
Caution indentifies conditions and actions that may
damage your meter.
Note indentifies symbols from which you can
understand operation and features of your meter. For

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related international symbols used by the Meter and the
Manual, please read Table 1-1 for reference.
Warning
l 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.
l Make sure the battery door is closed and latched
before operating the meter.
l Remove test leads from the meter before opening the
battery door.
l Inspect the test leads for damaged insulation or
exposed metal. Check test leads before using the
meter. Replace the damaged leads before use.
l Do not use the meter if it operates abnormally.
Protection may be impaired. When in doubt, have the
meter serviced.
l Do not operate the meter around explosive gas, vapor,
or dust.
l Use only type AA batteries, properly installed in the
meter case to power the meter.
l Use caution when working above 30V ac rms, 42V ac
pk, or60V dc. Such voltages pose a shock hazard.
l When using the probes, keep fingers behind the
finger guards on the probes.
l Connecting the common test lead before connecting
the live test lead. When disconnecting test leads,
disconnect the live test lead first.
l Read carefully and make sure well understanding of
this Manual before use.
l Make sure the requirements in the Manual are strictly
followed and keep the Manual for reference whenever
needs.
l Mis-operation may cause accidents and damages to
the Meter in testing. Caution
To avoid possible damage to the Meter or to equipment
under test:
l Make sure the rotary switch is in the right position,
disconnect the testing leads and the circuit under test
before rotating, conversion in testing is prohibited in
case of damaging the Meter.
l Cut all the power off and release electricity fully from
all capacitor before testing online resistance, biode
and continuity.
l Check fuse in the Meter before testing current (See
Section Five Replacing Fuse). Cut off the power
before connection. Remember: when testing current,
connect the Meter with the Circuit in series. Do not
connect testing leads to any circuit in parallel.
l Do not use the Meter if symbol displays.
l Do not store or use the Meter in high temperature,
high moisture, explosive, inflammable, strong
electromagnetic environment and dew or direct
sunlight place.
l Do not use abrasive or solvent to clean the Meter, use
a damp cloth or neutral detergent instead.

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l Make dry before store if the Meter is damp.
Symbols
For related international symbols used in the Meter
and the Manual, please read Table 1-1 for reference.
Table 1-1 International Symbols
Symbol MeaningSymbolMeaning
Alternating
current Earthground
Direct current Fuse
alternating or
Directcurrent Double insulated
Riskofdanger.
Important
information. See
Manual
Battery
Conforms to European Union directives
CATIII
Overvoltage of class three, secondary pollution
(according to IEC61010) refers to the level of
protection for the pulse compression. Typical
installation location includes: distribution of
three-phase circuit (including a single commercial
lighting circuit) position-fixed equipment; interior
lighting equipments in large buildings, lines;
industrial field devices.
CAT
Overvoltage of class four, secondary pollution
(according to IEC61010) refers to the level of
protection for the pulse compression. typical
installation location includes: Three-phase utility
power supply equipment for any outdoor power lines
or equipment; Any outdoor transmission lines;
Electricity meter front-end over-current protection
device.
SectionTwo
Understand Meter
Study this section to understand all features and
functions.
Power-on
Turn the rotary switch to the position to start a
function.
When powered-on, the Meter starts inner
self-diagnose and displays in full screen before
undergoing related operations.
Note
Power-on: wait for 5 seconds before restart to make
sure correct current operation.
AutomaticPower-off
Factory-setting defines that the Meter will
automatically power off if no operation undergoes within
15 minutes.
If automatically power off, turn rotary switch to OFF

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position and then restart.
User can choose automatic power-off function (See
Section 3 “Setup function”)
Note: we suggest turning rotary switch to OFF
position if no work is undergoing because there is about
300uA loss even if the Meter is automatically
powered-off.
Low-batterydisplay
Replace batteries as soon as possible if symbol
displays on the screen.
Warning
To avoid possible electrical shock and body injury
caused by wrong readings, replace batteries as soon as
possible if symbol displays on the screen.
RotarySwitch
Turn the rotary switch to any position to open the
Meter. Standard display of the function will appear in the
screen.
Press green button to select green function of the
rotary switch.
When the rotary switch turned to another function,
the screen will display information of the new function.
Sets on a certain function will not extend to another one.
Rotary Switch is shown in Figure 2-1.Illustration for
rotary position is shown in Table 2-1.
Figure 2-1 Rotary Switch
PushButtons
Push buttons are shown in Figure 2-2.Illustration for
press buttons are shown in Table 2-1.
Figure 2-2 Push Buttons

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Table 2-1 Rotary Switch
Positi
on Rotaryswitchfunction
GreenButton
Function
ACV measurement none
DCV measurement none
Resistance
measurement none
Continuity test Diode test
DcmA measurement none
current output 25%,100% step
output
simulate transmitter
Loop-circuit current
measurement (loop
power)
none
Loop-circuit current
measurement with 250Ω
HART Resistance (loop
power)
none
Table 2-2. Press Button
Press
butto
n illustration
Under measurement function: readings
display and held function
Under output function: select output set
towards left.
Under output function: select output settings
towards left.
set output :increase set value;
Step output: output makes step and linear
increase by 25% or 100% for each press.
Set output: decrease set value.
Step output: output makes step and linear
decrease by 25% or 100% for each press.
in position, select diode measurement;
in and position, select 25% or 100%
step output.
shift between unit mA and mA .
ScreenDisplay
Display screen is shown in Figure 2-3.Illustration for
display screen is shown in Table 2-3.

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Figure 2-3 Display screen
Table 2-3. Display screen
NO. DisplayIllustration
1 INPUT
Lights when measurement is
active
2 Lights when output is active
3
Lights when measured value
is held in measuring mode
4 Data display
5 SIMULATE
Lights when the Meter works
in simulate transmitter
mode.
6 250Ω HART Lights when 250Ω HART
resistance function is active
7
0 FS
Lights when calibration is
active.
8 Showslowbatterystate
9 LOOP POWER Starts 24v loop circuit power
supply
10 ACDC Direct current, Alternating
current
11
％
mVA
k
Measurement or output unit
12
25％
100％
Shows 25% or 100%
manual-step output of Dc
mA in output mode
13 ▲▲▲▲▲ output set
14
continuity test function in
measurement mode
15
Lights in diode test function
16
More than 30v input voltage
in measurement mode

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Input/outputterminals
Input/output terminals are shown in Figure
2-4.Illustration is shown in Table 2-4.
Figure 2-4 input/output terminals
Table2-4. Input/output terminals
NO. terminals illustration
1 +LOOP output point for loop circuit power
2 mA
current measurement input
common point for DC output
common point for loop circuit power
Simulates the output of a transmitter
group (with external power supply
connected in series.)
With protection by 63mA fuse.
3 COM
common point for all testing
Common point for simulate
transmitter output.
4 VΩ
voltage output of 600V、Ω、diode and
continuity test.
Using display holdmode Display HOLD ）
Under output mode, the Meter freezes data
displayed in the reading part when pressing button to
enter into display hold mode (screen displays symbol).
Repress button to exit from display hold mode.
SectionThree
Operation
This section introduces how to use this Meter.
Most functions are available by turning rotary switch.
White symbols besides rotary switch indicates main
function, green symbols indicates replacing function.
Press green button to use the replacing function.
Measuring AC voltage
1. turn the rotary switch to “ ”;
2. insert black probe into “COM” terminal ,and insert red
probe into “ V” terminal;
3. Connect the probes to the circuit under test and then
read the measured value when stable.