Hantek HT824 Manuale utente

USER’S MANUAL 1

USER’S MANUAL

HT824 Multifunction Process Calibrator

V1.0.0

http://www.hantek.com

USER’S MANUAL 2

Introduction

HT824 Multifunction Process Calibrator is handheld equipment with High-capacity

rechargeable battery power supply. It can measurement or output a variety of electrical

signal, and measurement or simulate a variety of TC and RTD.

HT824 process calibrator also has following features:

1.The display has two parts. The upper of display shows the voltage and current

measured by the user, and has the function to use the loop power supply to measure

current (LOOP). The bottom of display shows measurement or output voltage, millivolt,

current, TC, RTD and resistance

2.TC can add environment temperature cold junction compensation. The environment

temperature can be set calibration in menu function.

3.Each output function has manual step output and auto step/slope output function. It can

be set as the value 0%, 100% in the range of signal output.

4.It can be manually set in setting menu, power-off time, turn-off time of backlight, screen

contrast, setting clock, cold junction compensation ON/OFF, Chinese/English language,

etc.

5.The calendar clock can be calibrated in setting menu.

6.It can save 8 packs of measurement and output data, and invoke to display all the times.

All the setting and final operation will be automatically saved after power-off.

7.Novel appearance, bitmap graphics screen which can display Chinese character.

Humanized digital key input which makes the operation easier.

8.USB communication function.

Table 1. Output and measurement function

Function

Measurement

SignalOutput

DC Voltage（Upper of display）

0—30.000V

DC Current（Upper of display）

0—24.000mA

Loop Power Supply（Upper of

display）

0—24.000mA

DC V（Bottom）

0—24.000V

0—20.000V

DC mV（Bottom）

0—90.000mV

DC mA（Bottom）

0—24.000mA

Simulation or source output 0—

24.000mA

Resistance（Bottom）

0—400.00Ω

400.0—4000.0Ω

5.00—400.00Ω

400.0—4000.0Ω

TC（Bottom）

Type S, R, B, K, N, E, J, T,（mV）

RTD（Bottom）

Pt100(385) Pt100(3926) Pt100(3916) Pt200(385)

Pt500(385) Pt1000(385) Cu100(ITS) Cu50(ITS)

USER’S MANUAL 3

Other function

Step output, slope output, save and recall data, USB

communication, etc.

Safety Information

Process calibrator is designed according to international standard IEC1010-1,

1010.1-92 standard of international safety specification design and manufacture. User

should use the calibrator as the instructions of this manual. Otherwise, the protection

provided by the calibrator might be damaged.

“Warning” indicates the situation or action that might cause danger to the user.

“Caution” indicates the situation or action that might cause damage to calibrator or

the equipment been measured.

To avoid electric shock or personal injury

Do not use the damaged calibrator. Inspect calibrator and probes before using. If

probe is damaged, the case is broken or without any display in the screen, do not start

measurement.

The calibrator should only be used with the fitted probe together which accords fully

with the requirements of safety standards. The probe should be replaced by the same

model which has same specification if broken.

Never apply voltage over the rated voltage indicated on the calibrator between the

ports or any port and the ground. The maximum voltage between the ports is 30V, 24mA.

When the connector of probe is plug into current port, do not test any voltage source

with the probe.

Choose correct function and range gear as the measurement requirement.

Please confirm the battery cover is close before using.

The probe wire should be removed before to open the battery cover.

Inspect whether there is damage or exposed metal on the wire. Inspect whether it

works or not. The damaged wire should be replaced before using the calibrator.

The finger is forbidden to touch the metal contact when using the probe. The fingers

should keep behind the protector of probe.

The common wire should be connected before electriferous measurement wire. And

the electriferous measurement wire should be removed first.

USER’S MANUAL 4

If the calibrator is abnormal, please do not use it. The protective measures might be

destroyed. If any doubt, send it for repair.

Never use the calibrator around the explosive gas, steam or dirt. Do not let the

calibrator explore to strong light, high temperature or humid place.

The battery should be installed in the outer-case correctly.

The probe should be removed before change different measurement or output

function.

The calibrator should be repaired with specified replaced parts.

To avoid reading error or might cause electric shock or personal injury, it should be

charged immediately when there is the battery symbol displayed on the upper right

corner of the screen.

To avoid the damage to calibrator or equipment been measured

The power should be cut off before resistance test, and all high-voltage condensers

should be discharged.

Correct port should be used and corresponding function keys should be pressed

during measurement and output process.

Symbol

Explanation

Symbol

Explanation

thermoelectric couple

fuse

RTD

resistance temperature

detector (thermal resistance）

battery pack

important information.

power switch

CJC

thermoelectric couple cold

junction compensation

Acquainting the Process Calibrator

The keys and ports distribution of calibrator is shown in the following picture.

Top ports / Bottom ports

USER’S MANUAL 5

The following table is the wiring instructions of port function.

Remarks

Name

Instruction

Bottom

V/Ω、COM port

The port to test or output voltage, millivolt, resistance and

RTD.

Bottom

mA+/3W、mA-/4W port

1. The input port to test resistance or RTD third & fourth

wire.

2. Positive and negative port to test and output current.

Top

thermoelectric couple

micro input/output

port+TC-

Test or output thermoelectric couple port. This port can

joint with a micro thermoelectric couple plug with

polarity (Flat contactor). The distance from one

contactor to the other one is 7.9 millimeter (0.312 inch).

Top

V/LOOP、COM port

The port to test voltage or provide LOOP for testing

current.

Top

mA、COM port

The port to test current.

The key of calibrator is shown as follows. The following table is the explanation of

their functions.

USER’S MANUAL 6

NO.

Key Name

Instruction

Choose voltage measurement function, and show the value in the

upper part of screen.

Use V/LOOP, COM port to input.

Choose currentmeasurement function, and show the value in the upper

part of screen.

Use mA, COM port to input.

LOOP

Start the loop power supply to test current, show the value in the upper

part of screen. Use V/LOOP, COM port.

CONFIG

Enter into configuration menu of calibrator. Set and calibrate the

parameter and show the corresponding parameter in the upper part of

screen.

EXIT

Exit configuration menu, or exit from the function of saving data or

invoking data.

Choose voltage function (in the bottom of screen), the screen shows

“voltage” correspondingly. Switch measurement or output through

“MEAS” and “SOURCE” keys.

Choose mA (current) function (in the bottom of screen), the screen

shows “mA” correspondingly. Switch measurement or output through

“MEAS” and “SOURCE” keys. Press this key repeatedly and choose

source output or simulated output function cyclically. The screen shows

“mA SOUR” or “mA SIMU” correspondingly.

USER’S MANUAL 7

Choose millivolt function (in the bottom of screen), the screen shows

“mV” correspondingly. Switch measurement or output through “MEAS”

and “SOURCE” keys.

Choose TC (thermoelectric couple) function (in the bottom of screen),

the screen shows “TC” correspondingly. Switch measurement or output

through “MEAS” and “SOURCE” keys. Press this key repeatedly and

choose the type of thermoelectric couple cyclically. The screen shows

the type of thermoelectric couple correspondingly.

Choose resistance function. Switch measurement or output through

“MEAS” and “SOURCE” keys.

RTD

Choose RTC (thermal resistance)function (in the bottom of screen), the

screen shows “RTC” correspondingly. Switch measurement or output

through “MEAS” and “SOURCE” keys. Press this key repeatedly and

choose the type of RTC cyclically. The screen shows the type of

thermal resistance correspondingly.

MEAS

Choose measurement mode, the screen shows “measurement”

correspondingly.

SOURCE

Choose output mode, the screen shows “output” correspondingly.

STORE

To enter data store function, it means to save the measurement value

or output value in the bottom of scree into internal address, total 8

addresses. Press this key repeatedly to store data address. When there

is date in the address, this address will be shown bold.

RECALL

To enter data recall function, it means to display and output the value

saved in the internal address. Press this key repeatedly to select data

recall address.

Repeat 0%-100%-0% slope（as 25% step）

Repeat 0%-100%-0% slope slowly

Repeat 0%-100%-0% slope quickly

SLOPE STOP

Stop automatic slope of the output function.Stopped for manual output

and its manual step function.

Numeric key

Input the digital value in output mode.

OUTPUT

In the output mode, input digital value by numeric key and press this key

to output the signal from ports.

ENTER

When entering into data store function or data recall function, confirm

the address to store data or recall data. And calibrate the time in

configuration menu or be used with other keys.

USER’S MANUAL 8

CLEAR

Remove the input data

Press this key in output mode, it will callout the setting value 0% from

the memory and shows output. Press “0%” key and “ENTER” key

together, it will save current output volume as 0% value.

-25%

Press this key in output mode, it will increase output 25% of the range

from 0% to 100%.

+25%

Press this key in output mode, it will reduce output 25% of the range

from 0% to 100%.

100%

Press this key in output mode, it will callout the setting value 100%

from the memory and shows output. Press “100%” key and “ENTER”

key together, it will save current output volume as 100% value.

left/right/up/down

direction key

Press the left or right direction key in resistance measurement function

or RTD measurement function, circularly select 2W, 3W, 4W

measurement.

Used for calibrating output function and adjusting corresponding

functions in the configuration menu.

Wheel

Turning this wheel in voltage, current, mV output function. The value will

reduce a unit when rotate it counterclockwise. The value will increase a

unit when rotate it clockwise. It is not workable in other function gears.

CALDN

Used for calibrating the function in the bottom. The calibration methods

please see the calibration specification.

Back light switch

Basic Operation

1、Configuration menu function

There are ten items of setting in configuration menu. Press “CONFIG”to enter into.

Press EXIT to exit.

Setting 1. Adjusting the time to power-off. (The calibrator will power off after the

setting time when there is no any operation.) The factory default value is 20 minutes. The

detail operation step and explanation are as follow.

1) Press “CONFIG”it shows “power off time XX minutes” in the upper part of screen.

The unit is minute.

2) Press up or down direction key, to increase or reduce the power-off time, range:

0-60 minutes. When the power-off time is setting as 0, the calibrator will cancel

auto power-off. Then it can only be powered off manually.

USER’S MANUAL 9

3) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Setting 2. Adjusting screen contrast. Factory default is 09. The detail operation

step and explanation are as follow.

1) Press CONFIG, keep pressing and select setting 2. It shows “Screen contrast XX”

in the upper part of screen.

2) Press up or down direction key, to increase or reduce the number in the screen,

range: 0-16.When the number gets larger, the content in the screen gets weaker.

When the number gets smaller, the content in the screen gets darker.

3) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Setting 3. Adjusting the delay time of back light (The calibrator will turn off the

back light after the setting time when there is no any operation). Factory default value is 5

minutes. The detail operation step and explanation are as follow.

1) Press CONFIG, keep pressing and select setting 3. It shows “Turn-off time of back

light XX minutes” in the upper part of screen. The unit is minute.

2) Press up or down direction key, to increase or reduce the turn-off time of back light,

range: 0-20 minutes. When the turn-off time is setting as 0, the calibrator will

cancel auto turn-off. Then it can only be turned off manually by pressing BL key.

3) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Attention. It can save the battery and increase the using time to set the

turn-off time of back light shorter.

Setting 4. Setting calendar and time. The detail operation step and explanation

are as follow.

1) Press CONFIG, keep pressing and select setting 4. It shows “Calendar time

setting: XX year” in the upper part of screen. The unit is year.

2) Press up or down direction key, to increase or reduce year, range: 00-99 year.

3) Press ENTER, enter into the setting of month, and continuously set date, hour,

minute and second.

4) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Setting 5.Setting temperature unit. The factory default is ℃. The detail operation

step and explanation are as follow.

1) Press CONFIG, keep pressing and select setting 5. It shows “Setting temperature

unit: ℃” in the upper part of screen.

2) Press up or down direction key, to select ℃or ℉circularly. When the temperature

unit is changed, the unit in measurement and output TC or RTD function will also

USER’S MANUAL 10

be changed.

3) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Setting 6.Setting HART. The factory default is OFF. The detail operation step and

explanation are as follow.

1) Press CONFIG, keep pressing and select setting 6. It shows “Setting HART: OFF

(ON)” in the upper part of screen.

2) Press up or down direction key, to select ON or OFF circularly. If select “ON”, select

output current (mA) in the bottom of screen and series 250Ωresistance, it shows

“HART” in the bottom of screen.

3) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Setting 7.Setting cold junction compensation. The factory default is OFF. The

detail operation step and explanation are as follow.

1) Press CONFIG, keep pressing and select setting 7. It shows “Cold junction

compensation: OFF (ON)” in the upper part of screen.

2) Press up or down direction key, to select ON or OFF circularly. If select “ON”, it

automatically does cold junction compensation in measurement or output TC

function in the bottom of screen. It shows “CJC XX.X”in the bottom of screen,

XX.X means the temperature of current cold junction compensation.

3) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Setting 8.Calibrating the temperature of cold junction compensation. Put the

calibrator in the calibration environment for 10 minutes before starting the calibration. Start

to calibrate when the temperature inside theinstrument is as same as it in the environment.

The temperature has better been around ten ℃. The environmental measurement

thermometer with accuracy ±0.2℃should be used as standard. The detail operation step

and explanation are as follow.

1) Press CONFIG, keep pressing and select setting 8. It shows “Cold junction

compensation: XX.X℃” in the upper part of screen.

2) Press up or down direction key, to increase or reduce the number in the screen.

Adjust the temperature in the screen as same as the value in standard

environmental measurement thermometer.

3) Press CONFIG, enter into the next level setting. Press EXIT to exit configuration

menu.

Setting 9. System calibration turns on or off. The factory default is（OFF）. The

detail operation step and explanation are as follow.

1) Press CONFIG, keep pressing and select setting 9. It shows “System calibration

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