PCE Instruments PCE-LOC 20 User Manual

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PCE-LOC 20 Loop Calibrator

PCE-LOC 20

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italiano, español, português, nederlands, türk, polski,

русский, 中文) can be found by using our

product search on: www.pce-instruments.com

Last change: 10 August 2018

v1.0

English

Contents

1 Safety notes ........................................................................................... 1

2 PCE-LOC 20 Hardware Parts and Accessories .................................. 2

2.1 Unpacking and Inspection ................................ ................................................................ 2

2.2 Operational Sections and Connections ............................................................................. 3

2.3 Power Options.................................................................................................................. 8

2.4 Battery ............................................................................................................................. 8

3 Start Up and Basic Operations ............................................................ 9

3.1 Power ON or OFF ............................................................................................................ 9

3.2 User Interface .................................................................................................................. 9

4 Menu Layout ........................................................................................ 20

4.1 MENU page ....................................................................................................................20

4.2 MEASURE Page .............................................................................................................20

4.3 SOURCE Page ...............................................................................................................22

4.4 DISPLAY Page................................................................................................................27

4.5 DATA LOGGING Page ....................................................................................................33

4.6 ALARM Page ..................................................................................................................35

4.7 SETTING Page ...............................................................................................................37

5 Maintenance and Troubleshooting ................................................... 39

5.1 Common Problems .........................................................................................................39

5.2 Replacing the Battery ......................................................................................................40

6 Technical Specifications .................................................................... 40

7 Warranty ............................................................................................... 42

8 Disposal ............................................................................................... 42

1 Safety notes

Please read this manual carefully and completely before you use the device for the first time. The device may only be used by qualified personnel and repaired by PCE Instruments personnel. Damage or injuries caused by non-observance of the manual are excluded from our liability and not covered by our warranty.

• The device must only be used as described in this instruction manual. If used otherwise, this can cause dangerous situations for the user and damage to the meter.

• The instrument may only be used if the environmental conditions (temperature, relative humidity, …) are within the ranges stated in the technical specifications. Do not expose the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

• Do not expose the device to shocks or strong vibrations.

• The case should only be opened by qualified PCE Instruments personnel.

• Never use the instrument when your hands are wet.

• You must not make any technical changes to the device.

• The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,

no abrasives or solvents.

• The device must only be used with accessories from PCE Instruments or equivalent.

• Before each use, inspect the case for visible damage. If any damage is visible, do not

use the device.

• Do not use the instrument in explosive atmospheres.

• The measurement range as stated in the specifications must not be exceeded under

any circumstances.

• To prevent electrical shocks or damage to the instrument, do not connect more than 30 V between the terminals, or between the terminals and the ground.

• This instrument uses a Lithium-Ion battery pack. To prevent an explosion or fire, do not short circuit, do not disassemble and keep it safe from damage.

• To prevent battery leakage or heat generation, only use the battery charger in the temperature range 0 … 45 °C (32 … 113 °F).

• To make sure the display shows the correct data, disconnect the test leads before you set the power to on or change to another measure or source function.

• To prevent damage to the display, do not use sharp objects on the screen.

• Only sufficiently skilled persons may use the meter. Qualifications from an approved

training establishment may be necessary.

• Follow good engineering practice at all times.

• Non-observance of the safety notes can cause damage to the device and injuries to

the user.

We do not assume liability for printing errors or any other mistakes in this manual. We expressly point to our general guarantee terms which can be found in our general terms of

business. If you have any questions please contact PCE Instruments. The contact details can be found at

the end of this manual.

2 PCE-LOC 20 Hardware Parts and Accessories

2.1 Unpacking and Inspection

At the factory each new PCE-LOC 20 passes a careful inspection. It should be free of scrapes and scratches and in proper operation order upon receipt. The recipient should, however, inspect the unit for any damage that may have occurred during transit. If there are signs of obvious mechanical damage, package contents are incomplete, or the instrument does not operate according to its specifications, please contact PCE Instruments as soon as possible.

Delivery contents: 1 x Calibrator PCE-LOC 20 2 x Laboratory cables with 2 mm plug 2 x Adapter 2 mm on 4 mm laboratory cable 2 x Alligator clips 1 x Mini USB cable 1 x Power supply 5V / 1 A 1 x Carrying bag 1 x User manual

The software can be downloaded here: https://www.pce-instruments.com/english/download-

win_4.htm

If you have to return the instrument to the factory for any reason, use the original packing whenever possible. Include a detailed description of the reason for the return, templates are available from PCE Instruments.

2.2 Operational Sections and Connections

All sections and connections are presented in detail on the next pages. Note: Keep in mind that the next picture (as well as all pictures of PCE-LOC 20 in this manual)

has an example configuration of modules. The configuration of your PCE-LOC 20 may vary significantly from the one in the picture.

1 Terminal Connection for Measure and Source 2 Keypad Section 3 Color Display 4 USB Connection Slot for PC Communication and Charging

Terminal Connections

Source Terminals

Range: 0.000 … 24.000 mA Resolution: 0.001 mA

mA(2W)

Range: 0.000 … 24.000 mA Resolution: 0.001 mA

Range: 0.00 … 250.00 mV Resolution: 0.01 mV

Range: 0.000 … 12.000 V Resolution: 0.001 V

Current Generation

The PCE-LOC 20 is able to generate current both in source and sink mode. In source mode, the PCE-LOC 20 provides the supply power to the loop. In sink mode, an external power supply is used and the PCE-LOC 20 controls the current flow.

The following picture displays the connection for current source for different mode. mA Current Source

mA 2-Wire Simulation

Voltage Generation

The PCE-LOC 20 is capable of voltage generation with two voltage generation ranges.

The following picture displays the connection for voltage source for both mV & V Output Type.

Measure Terminal

Range: 0.000 … 24.000 mA Resolution: 0.001 mA

mA(24V)

Range: 0.000 … 24.000 mA Resolution: 0.001 mA

Range: 0.000 … 250.00 mV Resolution: 0.01 mV

Range: 0.000 … 30.000 V Resolution: 0.001 V

Switch

Test

Potential free contacts Trigger level: 24V, 24mA (2V) Voltage level detection

Trigger level: 0 … 30V in 1V steps Input impedance: >1MΩ

Current Measurement

The PCE-LOC 20 supports current measurement using either PCE-LOC 20 as the loop power supply while at the same time measuring the current or simply measuring the current while an external power supply is used.

The following picture displays the connection for Current Measurement for different mode. And

also different ways of providing the supply power to the loop.

mA Current Measurement In this mode, the PCE-LOC 20 is not providing any supply voltage. For proper measurement, the

external device should be capable of providing the voltage supply. If the external device is not capable, an external Power Supply should be connected in series.

mA Read Power Current Measurement In this mode, the PCE-LOC 20 works as a Loop Power Supply while at the same time measuring

the current.

Voltage Measurement

The PCE-LOC 20 is capable of voltage Measurement with two voltage measurement ranges.

The following picture displays the connection for Voltage Measurement for different mode.

Switch Test

The PCE-LOC 20 is capable of detecting switch’s state both when the switch is free of external potential or switches with DC voltages within the range 0 V … +30 V.

Switch Mode: 2V (24VDC, 30mA)

Switch Mode: Voltage Trigger

KeyPad

The PCE-LOC 20 has six different keys. The key description is given below.

This key has different functionalities in different menus. These are shown in the bottom left part of the display.

- Scroll down to next parameter

- Decrease value of digit in Editbox

- Scroll down to previous parameter

- Increase value of digit in Editbox

- Enter menu when in Run mode

- Save edited parameter to memory

- Log current reading in memory if device is in Run mode and log mode is manual

- When not in Run mode, this key is used to enter Run mode

- Press and hold (approx. 2 s) to turn meter on/off

Display

• LCD with a 2.4” color display

• Resolution of 240x320 pixels

• Supporting 262K colors

USB Connection

• The USB connection is located at the top of the PCE-LOC 20. It is a USB mini B-Type female connector.

• It can be used for PC communication and for charging the device.

• The USB cable supplied with the device is USB A-type male to USB B-type male. It is used

for connecting charger and PC.

Stand for Table Top Use

• This stand offers the best support for table top use which gives good viewing angle when the PCE-LOC 20 is placed on a table.

• Procedure to open stand:

is being engraved on the top of the stand.

You should pull a bit first.

is being engraved on the bottom of the stand. Now during first pull of above you can release this lower part easily so that you can maneuver the stand as you like.

2.3 Power Options

There are three power options:

• Lithium-Ion battery: All the instrument functions are available with a charged battery.

• 5 V DC charging adaptor: It supplies power to the instrument and charges the battery at the

same time. It charges the battery when the instrument is on or off.

• USB mini Type B connection: This charges the battery when the instrument is off and increases the battery life when the instrument is on.

2.4 Battery

The Device uses 2300mAh Lithium-Ion battery.

WARNING

• To prevent an explosion or fire, do not short circuit, do not disassemble, and keep it safe from damage.

• To prevent an explosion or fire, use only the supplied battery, battery charger and USB cable.

• To prevent battery leakage or heat generation, only use the battery charger in the

temperature range 0 … 45 °C (32 … 113 °F).

When you set the power on, the battery symbol at the top of the display shows the charging status. To get more information on the battery, go to the Battery Info Page in the Setting menu.

Charging time

Charging method

Charging time (to full capacity)

External charging adaptor

≈ 5 hours

USB mini Type B connector

≈ 6 hours (with 500 mA supply) (When device is Off)

Operating time

Operation

Battery duration

Continuous operation (measure)

>18 hours

Continuous operation (measure and source (@12 mA))

>8 hours

These are typical operating times for a new, fully charged Li-Ion battery pack with these settings:

• Backlight Intensity set to 5 % (Default: 100 %)

• Backlight Timeout set to 0 (0=Infinite) (Default: 0)

Power saving options: To get the best battery duration, set a low value for the Backlight Intensity (40 %) and a short Timeout. The maximum operating time without recharging varies depending on the usage and brightness setting of the display light. Also the generated output current and the usage of the 24 V transmitter supply affect the maximum operating time.

Notes:

• The PCE-LOC 20’s memory and the internal clock/calendar use a small amount of

power although the calibrator is switched off. Remember to check the capacity of the batteries from time to time although the PCE-LOC 20 is not in use.

• Do not leave the PCE-LOC 20 without a battery pack or an empty battery for a long

time. The PCE-LOC 20 may lose its settings if it is left without a support voltage for an extended period.

3 Start Up and Basic Operations

3.1 Power ON or OFF

To power ON the instrument, press and release the LOG/Power button until the display comes on. During the power on sequence, the instrument shows a startup message and then shows the applicable data. To power OFF the instrument, press and hold (≈ 2 seconds) the same button again. When the power is off, the last set of configuration options stays in memory.

3.2 User Interface

Everytime the PCE-LOC 20 is switched on, the startup message ends in RUN Page. 4 display modes are available in the RUN page.

1. Measure + Source

2. Measure Only

3. Source Only

4. Switch Test + Source

This display mode can be selected from MENU → DISPLAY Page. In case of Dual Mode display, screen is divided into two parts. Due to that only few additional info will appear on RUN Page. The information to be shown can be selected in Display Mode menu.

Not all possible elements are included in the previous picture, but the most important ones are discussed in the following chapters.

The Status Bar

The status bar at the top of the display is visible only in RUN Page. It is divided into five main sections.

Time in HH:MM:SS format Available in two formats

1. 24 hour (default)

2. 12 hour

This setting is available in Date/Time in Settings Menu

Error Code Indicator

This icon is visible if any on-board peripherals like RTC, ADC, DAC,

etc. are not working properly, see chapter 4.7.6 About Calibrator

This Page illustrates the Connection diagrams for valid connections to this device. Maintenance and Troubleshooting.

The List of error codes available in this device is given below.

Error code

Description

Memory corrupted or device unable to read/write it

RTC not working properly

Device unable to read battery information

Measure mode not working

Device unable to get source feedback reading

Data log memory corrupt

Source mode not working

More than one error from above list is occurring

USB Connection Status Icon Icon is visible if USB charging adaptor or USB data cable is connected to the device.

Icon is different for both indications, see below.

USB data cable is connected and communication with PC is available

USB charging adaptor is connected. Battery starts charging.

Battery Charge Percentage Indicator Always visible in Run page; battery % is shown in the centre of the icon and the icon

background is filled with green, yellow or red color if battery % is >= 50%, >= 20 and <20 respectively.

Data Logging Enable Status Indicator Icon is visible if data logging is enabled and will flash when a data log is stored to the

memory

Function Key Bar

The function key bar at the bottom of the display is visible all the time. 2 function keys are available. The meaning of the function keys varies depending on the situation. A blank function key text means that the function is disabled at the moment.

Display Mode

1. Measure + Source

Measure Window

Input Type

The Input Type

mA Current Input

mA(24V)

mA Current (Read Power-24V) Input

mV Voltage Input

V Voltage Input

Measure Display Mode

The Measure Reading Display Mode

Actual

Displays the Raw Input Value without any scaling

Percentage

Displays the Percentage Value in (0.00% … 100.00%)

Scaled

Displays the Scaled Value

Measure Reading

The Reading as per the Measure Display Mode

Measure Info 1

Shows the One of the available Addition Information This can be selected by Additional Info. 1 List in

MENU → DISPLAY → MEASURE page.

Measure Info 2

Shows the One of the available Addition Information This can be selected by Additional Info. 2 List in

MENU → DISPLAY → MEASURE page. This will disable if Bargraph is selected as Additional Info1 in

MENU → DISPLAY →MEASURE page.

HART Icon

HART Enable Status Icon This icon will appear if HART is enabled from

MENU → SETTING → HART page. (This icon is visible for mA(24V) Input Type only. For other Input Types this will invisible regardless of HART settings)

Source Window

Output Type

The Output Type

mA Current Output

mA(2W)

mA Current (2-Wire Simulation) Output

mV Voltage Output

V Voltage Output

Source Display Mode

The Source Reading Display Mode

Actual

Displays the Raw Output Value without any scaling

Percentage

Displays the Percentage Value in (0.00%

- 100.00%)

Scaled

Displays the Scaled Value

Source Reading

The Reading as per the Source Display Mode

Source Feedback Reading

The Feedback ADC Reading in Output Unit This will disable if Bargraph is selected as Additional Info1 in

MENU → DISPLAY → SOURCE page.

Source Info1

Shows the One of the available Addition Information This can be selected by Additional Info. 1 List in

MENU → DISPLAY → SOURCE page.

STEP/RAMP Icon

Shows the Icon indicating STEP/RAMP mode.

Manual Step

Rising Ramp

Step UP

Falling Ramp

Step DOWN

Ramp Hold @ 0%

Ramp Hold @ 100%

2. Measure Only

Measure Window

Input Type Measure Display Mode Measure Reading HART Icon

See chart in 3.2.4 Display Mode 1 Measure + Source

Bar Graph

Horizontal Bar graph according to Input Percentage Value (0.00% … 100.00%).

Percentage Value

The Percentage Value in (0.00% … 100.00%) according to Input Value.

Tare

The Tare Value Set from MENU → DISPLAY → MEASURETare page

Actual Value

The Raw Input Value without any scaling This will appear only if Main Display in

MENU → DISPLAY → MEASURE is set to

PERCENTAGE/SCALED.

Min

Displays the minimum value found after a measurement was started or minimum was reset.

Max

Displays the maximum value found after a measurement was started or maximum was reset.

Max-Min

Displays the Maximum-Minimum value found after a measurement was started or Maximum-Minimum was reset.

Cumulative Average

Displays the Cumulative Average value found after a measurement was started or Cumulative Average was reset.

3. Source Only

Source Window

Output Type Source Display Mode Source Reading Source FeedBack Reading STEP/RAMP Icon

See chart in 3.2.4 Display Mode 1 Measure + Source

Bar Graph

Horizontal Bar graph according to Output Percentage Value (0.00% … 100.00%).

Percentage Value

The Percentage Value in (0.00% … 100.00%) according to Output Value.

Actual Value

The Raw Output Value without any scaling This will appear only if Main Display in

MENU → DISPLAY → SOURCE is set to PERCENTAGE/SCALED.

4. Switch Test + Source

Switch Test Window

Switch Status

Switch Status Icon

Switch OPEN (OFF)

Switch CLOSE (ON)

Switch OPEN Reading

Displays the Source Reading value after the switch OPEN was detected.

Switch CLOSE Reading

Displays the Source Reading value after the switch CLOSE was detected.

Display Operations

Mainly, four types of widgets are available in the Device Menu.

i. ListBox

ii. EditBox iii. CheckBox iv. RadioButtonBox

The below section will show how to change the value of different widgets.

i. ListBox

ListBox are used when there is a limited amount of preset values. You have to select one of the available options. The list of available options is displayed in the centre part. A ListBox list opens when you press the F1 key. Use the UP/DOWN key to scroll through the available options. Select one of the options with the ENTER key.

Example: How to change of Input Type (I/P Type) from mA to mV. This Option is available in MENU → MEASURE Page.

ii. EditBox

EditBox is used where a large range of values is possible for a parameter.

To edit the value of an EditBox, press F1 key. After that EditBox enters Edit mode where F1 and F2 keys work as shifter. User can shift to desired digit and using UP or DOWN key digit value can be incremented or decremented. The modified value can be saved using MENU/ENT key.

The above figure shows the example how to change Input High (100%) Range from 20.000 to

10.000 mA.

There are mainly 2 types of EditBox in this device. In most of the EditBox changing of decimal point and changing of sign is not allowed. But there are few EditBox, where these are allowed. These types of EditBox are Scaled Low(0%) & High(100%) Range of measure & source, Alarm Low & High value and Editing of Source Value in RUN Page.

The below figure shows the example how to change decimal point of the Input Scaled High(100%) Range

To change the sign of the value, shift to the sign digit and pressing UP or DOWN key will toggle the sign.

iii. CheckBox

CheckBox is used where Binary Value (1/0, True/False) is available for any parameter.

To change the CheckBox status, press F1 key. This will enter edit mode. In this mode, status can be toggled by pressing F1 key. Press MENU/ENT key to store new status.

iv. RadioButtonBox

RadioButtonBox is used where very few values are possible and all the available values need to be visible.

In this device, two types of RadioButtonBox are available. One with 1 value can be selectable and the other where 1 or 2 values can be selected at a time.

In RadioButtonBox the other option can be selected by pressing MENU/ENT key on that option. When pressing this key the new option will be selected and the other option will be disabled.

Below an example is given, How to change Source Type from STEP to Ramp.

4 Menu Layout

4.1 MENU page

There are mainly six menus in this device. To enter the MENU page, press MENU/ENT key and press F2 key to leave the Menu page.

MEASURE

Contains Parameters related to Measure Mode like Input Type, Range etc.

SOURCE

Contains Parameters related to Source Mode like Output Type, Range, Source Type etc.

DISPLAY

Contains Parameters related to different display mode for RUN page

LOGGING

Contains Parameters related to Data Logging. (This )

ALARM

Contains Parameters related to Alarm & Alarm Set-Points.

SETTINGS

Contains Parameters related to General Settings of the device like display, Date/Time, Calibration, Reset, etc.

4.2 MEASURE Page

This Page appears when you select RUN → MENU → MEASURE.

The description of the parameters that appear on this page is given below.

Parameter Name

Description / Options

I/P Type

(Input Type)

Measure Input Type Available Options:

mA : 0.000 … 24.000 mA DC mA(24V) : 0.000 … 24.000 mA DC mV : 0.00 … 250.00 mV DC V : 0.000 … 30.000 V DC

Input Range Low (0%)

Low Range for Measure Input. Range:

Default Input Low to Input Range High(100%) This parameter is enabled, if Main Display in MENU → DISPLAY →

MEASURE is set to Percentage or Scaled.

Input Range High (100%)

High Range for Measure Input. Range:

Input Range Low(0%) to Default Input High This parameter is enabled, if Main Display in MENU → DISPLAY →

MEASURE is set to Percentage or Scaled.

Scaled Input Range

Low(0%)

Scaling Low Range for Measure Input. Range:

-99999 to Scaled Input Range High(100%) Decimal Point for this EditBox can be changeable. This parameter is enabled, if Main Display in MENU → DISPLAY →

MEASURE is set to Scaled.

Scaled Input Range

High(100%)

Scaling High Range for Measure Input. Range:

Scaled Input Range Low(0%) to 99999 Decimal Point for this EditBox can be changeable. This parameter is enabled, if Main Display in MENU → DISPLAY →

MEASURE is set to Scaled.

(Transfer Function)

Transfer Function for Scaling Available Options:

Linear x^2 (x2) x^(1/2) (√x)

This parameter is enabled, if Main Display in MENU → DISPLAY →

MEASURE is set to Scaled.

4.3 SOURCE Page

This Page appears when you select RUN → MENU → SOURCE.

The description of the parameters that appear on this page is given below.

Parameter Name

Description / Options

O/P Type

(Output Type)

Source Output Type Available Options:

mA : 0.000 … 24.000 mA DC mA(2W) : 0.000 … 24.000 mA DC mV : 0.00 … 250.00 mV DC V : 0.000 … 12.000 V DC

Output Range Low (0%)

Low Range for Source Output. Range:

Default Output Low to Output Range High(100%) This parameter is enabled, if Main Display in MENU → DISPLAY →

SOURCE is set to Percentage or Scaled.

Output Range High (100%)

High Range for Source Output. Range:

Output Range Low(0%) to Default Output High This parameter is enabled, if Main Display in MENU → DISPLAY →

SOURCE is set to Percentage or Scaled.

Scaled Output Range

Low(0%)

Scaling Low Range for Source Output. Range:

-99999 to Scaled Output Range High(100%) Decimal Point for this EditBox can be changeable. This parameter is enabled, if Main Display in MENU → DISPLAY →

SOURCE is set to Scaled.

Scaled Output Range

High(100%)

Scaling High Range for Source Output Range:

Scaled Output Range Low(0%) to 99999 Decimal Point for this EditBox can be changeable. This parameter is enabled, if Main Display in MENU → DISPLAY →

SOURCE is set to Scaled.

(Transfer Function)

Transfer Function for Scaling Available Options:

Linear x^2 (x2) x^(1/2) (√x)

This parameter is enabled, if Main Display in MENU → DISPLAY →

SOURCE is set to Scaled.

Source Type

Source Output Format Available Options:

STEP RAMP

At a time one can be selectable. Press F1 key on the one of the option for more settings.

STEP Page

Parameter Name

Description / Options

Manual

(Output Type)

Step Manual Mode Selection CheckBox. Ticking this checkbox will enable Step Manual Mode. And un-ticking will

enable Auto Step Mode.

Step Time (s)

Enter the time for a single step in seconds, Range:

1 … 9999 This parameter is enabled only for Auto Step Mode (Manual CheckBox is

Un-Checked)

Step(unit)

Step Size in unit

Step Size in unit, where unit is changed according to current Output Type and Source Display Mode.

Only Specify one Step(unit) or Step(%), the other will automatically changed according to the changed parameter.

Range: In accordance with Output Range & Source Display Mode.

This parameter is disabled, if Main Display in MENU → DISPLAY →

SOURCE is set to Percentage.

Step(%)

Step Size in Percentage

Step Size in Percentage. Only Specify one Step(unit) or Step(%), the other will automatically changed according to the changed parameter.

Range:

0.00 … 100.00

Repeat Format

How the stepping should be done. Available Options:

UP DOWN UP/DOWN DOWN/UP

This parameter is enabled only for Auto Step Mode (Manual CheckBox is Un-Checked)

Repeat

Repeat Counts

Defines how many times the steps are repeated Range:

1 to 9999 This parameter is enabled only for Auto Step Mode (Manual CheckBox is

Un-Checked)

Manual Stepping

To Enable Manual Stepping, select Source Type as STEP and Check the Manual CheckBox.

If this mode is enabled, icon will appear in Source Display Window in RUN Page. Pressing UP or DOWN key in RUN Page will increase or decrease Source Value by Step Size

specified in STEP Page. In RUN Page, Source Value can directly change by Pressing F1 key (EDIT) and modifying value

like in EditBox. and STEP Setting can be accessed directly by F2 key (SETTING).

Auto Stepping

To Enable Auto Stepping, select Source Type as STEP & Un-Check the Manual CheckBox. If this mode is enabled, (Step UP) or (Step Down) icon will appear in Source Display

Window in RUN Page and F1 and F2 Button change to START and SETTING respectively. Automated Step can be started by Pressing F1 key (START). After that F1 and F2 key will change

to PAUSE and STOP respectively. So by pressing F1 and F2 key running STEP can be PAUSE or STOP at any time in RUN Page.

STEP Setting can be accessed directly by F2 key (SETTING).

RAMP Page

Parameter Name

Description / Options

Hold@0%(s)

Time to wait at Low(0%) level in second This parameter is use for Repeat Format UP/DOWN or DOWN/UP.

Range: 0 … 9999

Rise Time (s)

Time to Increase from Low to High Level Range:

1 … 9999

Hold@100%(s)

Time to wait at High(100%) level in second This parameter is use for Repeat Format UP/DOWN or DOWN/UP.

Range: 0 … 9999

Fall Time (s)

Time to decrease from High to Low Level Range:

1 … 9999

Repeat Format

How the Ramp should be done Available Options:

UP DOWN UP/DOWN DOWN/UP

Repeat

Repeat Counts

Defines how many times the steps are repeated Range:

1 … 9999

Starting the RAMP

To enable Ramp, select Source Type as RAMP.

If this mode is enabled, (Rising Ramp) or (Falling Ramp) or (Ramp Hold @ 100%) or (Ramp Hold @ 0%) icon will appear in Source Display Window according to

current RAMP mode in RUN Page and F1 and F2 Button change to START and SETTING respectively.

RAMP can be started by Pressing F1 key (START). After that F1 and F2 key will change to PAUSE and STOP respectively. So by pressing F1 and F2 key running RAMP can be PAUSE or STOP at any time in RUN Page.

4.4 DISPLAY Page

This Page appears when you select RUN → MENU → DISPLAY.

There is mainly Four RUN Display Mode possible in this device. And this mode can be selected from the above Page. What information to be shown in each RUN Display Mode can be defined by this page.

In this page there is one RadioButtonBox. At a time one or two option can be selected. The possible combinations are given below.

Measure Only

Source Only

Measure + Source

Switch Test + Source

Measure Display Settings

This Page appears when you select RUN → MENU → DISPLAY → MEASURE.

Parameter Name

Description / Options

Main Display

Select which Reading to be display as a Main Reading (Reading Displays in Box in RUN Page).

Available Options:

Actual

Display the Actual Input Value

Percentage

Display the Percentage Value of the Input. The Value depends on Input Range. These

settings are available from MENU → MEASURE.

Scaled

Display the Scaled Value of the Input. The Scale Value depends on Input Range, Input

Scaled Range & Transfer Function. These settings are available from MENU → MEASURE.

Filter(sec)

1st Order IIR Low Pass Filter for Input Reading.

Filter is useful when a measurement signal contains unwanted noise.

Range:

0.0 to 60.0 sec

Tare(unit)

The Tare value is subtracted from the reading of the measured value.

Here unit is changed according to current Input Type and Measure Display Mode.

Range: In accordance with Input Range & Measure Display Mode.

Note: Beware of the problems that may result in not seeing the true measurement value.

Additional Info.1

Choose which information to be shown in Bottom Left side of the Measure Window on RUN Page.

Available Options:

Options

Icon

Description

Reset

Reset the Minimum, Maximum, Max – Min, Cumulative Avg. Value

None

No info is visible.

Minimum

Displays the minimum value found after a measurement was started or minimum was reset

Maximum

Displays the maximum value found after a measurement was started or maximum was reset

Max – Min

Displays the (maximum – minimum) value found after a measurement was started or (maximum – minimum) was reset

Avg. of 2

Displays the average value of present value and previous value.

Bargraph

Shows the Horizontal bar Graph in 0% to 100% scale.

The value in Bar Graph depends on the Display Mode and Measurement settings

Actual Value

Shows the Actual Input Value. This option is not appear if Main Display is Actual.

If Measure is not selected as Display mode this parameter will be disabled. And for Only Measure Display Mode Only Reset Option is available.

Additional Info.2

Choose which information to be shown in Bottom Right side of the Measure Window on RUN Page.

Options

Icon

Description

Reset

Reset the Minimum, Maximum, Max – Min, Cumulative Avg. Value

None

No info is visible.

Minimum

Displays the minimum value found after a measurement was started or minimum was reset

Maximum

Displays the maximum value found after a measurement was started or maximum was reset

Max – Min

Displays the (maximum – minimum) value found after a measurement was started or (maximum – minimum) was reset

Avg. of 2

Displays the average value of present value and previous value.

Actual Value

Shows the Actual Input Value. This option is not appear if Main Display is Actual.

If Measure is not selected as Display mode this parameter will be disabled.

Source Display Settings

This Page appears when you select RUN → MENU → DISPLAY → SOURCE

Parameter Name

Description / Options

Main Display

Select which Reading to be display as a Main Reading (Reading Displays in Box in RUN Page).

Available Options:

Actual

Display the Actual Output Value

Percentage

Display the Percentage Value of the Output. The Value depends on Output Range. These

settings are available from MENU → SOURCE.

Scaled

Display the Scaled Value of the Output. The Scale Value depends on Output Range,

Output Scaled Range & Transfer Function. These settings are available from MENU → SOURCE.

Additional Info.1

Choose which information to be shown in Bottom Right side of the Source Window on RUN Page.

Available Options:

Options

Icon

Description

None

No info is visible.

Bargraph

Shows the Horizontal bar Graph in 0% to 100% scale.

The value in Bar Graph depends on the Display Mode and Source settings

Actual Value

Shows the Actual Output Value. This option is not appear if Main Display is Actual.

This Parameter is enabled only for Measure + Source or Switch test + Source Display Mode.

Switch Test Settings

This Page appears when you select RUN → MENU → DISPLAY → SWITCH TEST.

Parameter Name

Description / Options

Mode

Switch Test Operation Mode Available Options:

2V(24Vdc,30mA)

Switch Close when External Switch (Potential Free Contacts) short & Switch Open is External Switch open.

Voltage Trigger

Switch Close when Input Voltage > Trigger Voltage Switch Open when Input Voltage < Trigger Voltage

All the MEASURE Page parameters are disabled if Switch Test Display Mode is selected.

Trigger Voltage

Trigger Voltage value for Voltage Trigger Switch Test Mode. Range:

0 to 30 V Enable only for Switch Test Mode as Voltage Trigger.

Sound

Sound Setting for Switch Test Mode Available Options:

Off When Switch Close When Switch Open

Reverse Logic

Switch Test Switch Logic Reverse Selection. Switch Open-Close Logic Reverse if this CheckBox is Checked.

4.5 DATA LOGGING Page

This section gives examples of how to log Readings with time and date over a set time period or on a key press. Logged data is stored in a user defined file in internal memory.

This Page appears when you select RUN → MENU → LOGGING.

Parameter Name

Description / Options

Trigger

Data Logging Trigger Mode Selection. Available Options:

Key Press Log Data on pressing from RUN key Page.

Periodic

Log Data periodically at every Sampling Rate for total time specified by Logging Time.

Mode

Data Mode Selection for Logging Available Options:

Measure Log only Measure Readings.

Source

Log only Source Readings.

Both

Log Measure and Source both Readings.

Switch

Log Switch Status & Source Readings.

This parameter is enabled only for Periodic Trigger.

Save Method

Reading Type selection for Logging Available Options:

Instant Min Max Average All

This parameter is enabled only for Periodic Trigger.

Sampling Rate(s)

Sampling Rate for Periodic Data Logging in seconds. Range:

1 … 9999 This parameter is enabled only for Periodic Trigger.

Logging Time (HH:MM:SS)

Total Logging Time in HH:MM:SS Format for Periodic Logging. This parameter is enabled only for Periodic Trigger.

File No.

File Number. Range:

1 … 25 This parameter is enabled only for Periodic Trigger.

File Info.

Shows the information of stored files. This information contains Logging Start Time & Date and No of Samples stored in the file.

File Delete

Delete stored file.

START LOGGING

Press F1 key while selecting this button to start the Logging.

Notes

• Maximum No of readings that can be stored in

Logging Mode

Max. no. of readings

Periodic

150000

Key Press

572

• In Periodic mode, changing of any Measure or Source parameter is not allowed. So

While Periodic Logging is Running, User can’t enter into MEASURE, SOURCE and

DISPLAY menu. But in Key Press Logging mode, there is no restriction.

• In Periodic Mode, if error message like “Not Sufficient Memory” comes while starting the Logging. Try to Reduce Logging Time or Increase Sampling Period or try deleting some existing files.

• In Key Press Mode, If No of Samples reach its maximum limit that is 484, the next sample will start from the first overwriting the memory.

• While Logging is running, entering into the LOGGING menu shows below page.

for Periodic Mode for Key Press Mode

For Periodic Mode, this page contains information of Number of Samples Taken and time remaining for Logging in HH:MM:SS.

• Both Periodic and Key Press logging can be stop manually by pressing F1 key on STOP LOGGING Button. For Periodic Mode, Logging will automatically stopped when defined log time ends and a message “LOGGING DONE” pops up.

Transferring the Results to a Personal Computer:

A 32-bit Windows® software called mCAL+.exe can be downloaded here: https://www.pce-

instruments.com/english/download-win_4.htm. Start this software just as any other Windows®

software. All communication between the PC and PCE-LOC 20 is initiated from mCAL+.exe.

More information on the software can be found in the separate software manual.

4.6 ALARM Page

This Page appears when you select RUN → MENU → ALARM.

Individual alarm limit values may also be enabled/disabled using the check box preceding the alarm limit value. To stop the alarm, uncheck the appropriate alarm checkbox.

When an alarm limit is exceeded, the PCE-LOC 20 emits an audible alarm and the Main Reading is shown with RED Color.

Parameter Name

Description / Options

Alarm Low Limit Value Range:

In accordance with Input Range and Measure Display Mode. And also it can’t be greater than Alarm High Limit when High Alarm is enabled.

> Alarm High Limit Value

Range: In accordance with Input Range and Measure Display Mode. And also it can’t be less than Alarm Low Limit when Low Alarm is enabled.

4.7 SETTING Page

This Page appears when you select RUN → MENU → SETTING.

All the available Settings Options are given below.

i. HART

ii. Display iii. Date/Time iv. Calibration

v. Battery Info. vi. Set Password

vii. Factory Reset

viii. About Calibrator

Press F1 key to Enter into the settings of any option. Description of all settings given below.

HART Settings

Select YES to add a Series resistor (250Ω) into the mA circuit. You can then use this instrument together with a HART® communicator to set up and calibrate HART® devices. This option is applicable for mA(24V) Read Power Input Type Only.

Display Settings

Display Intensity

Display Brightness Settings. Range:

1 … 100

Display Off Time

Standby Time in second after which display will turn Off. To turn the display off press any key.

Range: 0 … 9999 sec

Setting 0 will disable this feature. That means display will never turn off automatically.

Date/Time Settings

To set the Time + Date of the device There are 2 Date formats supported in this device DD/MM/YY &

MM/DD/YY. This is useful only in Data Logging, to decide in which format Date to be stored.

There are 2 Time formats supported in this device 24 Hour & 12 Hour. This is to select in which format the time should be displayed on Run page & time to be stored in Data Logging.

AM/PM selection is enabled only for 12 Hour Time Format.

Calibration

The instrument is factory calibrated for the specified range, but due to long term drift of components, re-calibration may be necessary in some cases. For calibrating the instrument, a reliable source is required. This source should be at least ten times accurate compared to the range of the instrument.

Note: PCE Instruments can provide a calibration service that is traceable to international standards.

We recommend that you return the instrument to the manufacturer or an approved service agent for calibration. If you use an alternative calibration facility, make sure that it uses these standards.

Battery Info

This page shows the basic battery Information.

• Battery Level (Percentage)

• Battery Voltage (in mV)

• Current (in mA)

• Battery Status

• Time to Full (in min)

• Time to Empty (in min)

About Calibrator

This Page illustrates the Connection diagrams for valid connections to this device.

5 Maintenance and Troubleshooting

5.1 Common Problems

Problem

Possible Causes

Device Not Starting Up

• Battery Discharged

• Battery Connection Loose

Reading Fluctuation/ Reading OPEN

• Wrong / Loose Connections

Error Code on status bar

• One of the peripheral not working properly. (Solution: Restart the Device if still error code showing contact PCE Instruments)

Calibration Out

• Distortion in due to external noise connection (Solution: Check connection. If still out, contact PCE Instruments or Recalibrate Device in authorized calibration laboratory)

Battery Not Charging

• Battery Connection Loose

• Battery Dead

5.2 Replacing the Battery

6 Technical Specifications

Measurement parameter Voltage mV

Measuring range

Resolution

Accuracy

0 ... 250 mV

0.01 mV

± 0.02% of rdg. + 2 Dgt

Voltage DC V

0 ... 30V

0.001V

± 0.02% of rdg. + 2 Dgt

Current DC mA

0 ... 24-mA

0.001-mA

± 0.02% of rdg. + 2 Dgt

Simulation parameters

Voltage mV

0 ... 250 mV

0.01 mV

± 0.02% of rdg. + 2 Dgt

Voltage DC V

0 ... 12V

0.001V

± 0.02% of rdg. + 2 Dgt

Current DC mA

0 ... 24-mA

0.001-mA

± 0.02% of rdg. + 2 Dg

General Specifications PCE-LOC 20

Display modes

Measurement: mA / V / / mV Simulation: mA / V / / mV

Maximum input voltage

30V DC

Input impedance measurement

mV / V:> 1 MΩ Current measurement: 10 Ω

Response time

<100 ms

Load impedance

> 10 kΩ at mV / V <750Ω at mA

Refresh rate display

10 Hz

Isolation

500V DC

Data storage

Internal memory 150000 readings

Interface

USB 2.0

Display

2.4" TFT LCD

240 x 320 pixels LED illuminated

Output voltage current loop

24V DC / 24-mA

HART mA loop resistance

250 Ω ± 20%

Special features

Step and ramp function Automatic and manual mode √x, x2: For the measuring function

Continuity test

Adjustable threshold up to 100 Ω

Power supply

3.7V / 2300-mAh Li-ion battery

Charging time

About 5 h

Power adapter

Input: 100 ... 240V AC / 50/60 Hz Output: 5V / 1 A DC

Battery life

Approx. 18 h: Simulation and measurement with low LCD illumination, approx. 8 h: Measurement with low LCD illumination

Dimensions

162 x 82 x 40 mm / 6.4 x 3.2 x 1.6 in

Weight

About 300 g / < 1 lb

Degree of protection

IP20

Operating conditions

Battery operation: 0 ... 55°C / 32 ... 131°F, 30 ... 90% RH Main operation: 0 ... 45°C / 32 ... 113°F, 30 ... 90% RH

Storage conditions

-20 .. 60°C / -4 ... 140°F, 30 ... 90% rh non-condensing

Heating time

About 15 minutes

7 Warranty

You can read our warranty terms in our General Business Terms which you can find here:

https://www.pce-instruments.com/english/terms.

8 Disposal

For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament applies. Due to the contained pollutants, batteries must not be disposed of as household waste. They must be given to collection points designed for that purpose.

In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use them or give them to a recycling company which disposes of the devices in line with law.

For countries outside the EU, batteries and devices should be disposed of in accordance with your local waste regulations.

If you have any questions, please contact PCE Instruments.

PCE Instruments contact information

Germany France Spain

PCE Deutschland GmbH PCE Instruments France EURL PCE Ibérica S.L. Im Langel 4 23, rue de Strasbourg Calle Mayor, 53 D-59872 Meschede 67250 SOULTZ-SOUS-FORETS 02500 Tobarra (Albacete) Deutschland France España Tel.: +49 (0) 2903 976 99 0 Téléphone: +33 (0) 972 3537 17 Tel. : +34 967 543 548 Fax: +49 (0) 2903 976 99 29 Numéro de fax: +33 (0) 972 3537 18 Fax: +34 967 543 542 info@pce-instruments.com info@pce-france.fr info@pce-iberica.es www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol

United States of America United Kingdom Italy

PCE Americas Inc. PCE Instruments UK Ltd PCE Italia s.r.l. 711 Commerce Way suite 8 Unit 11 Southpoint Business Park Via Pesciatina 878 / B-Interno 6 Jupiter / Palm Beach Ensign Way, Southampton 55010 LOC. GRAGNANO 33458 FL Hampshire CAPANNORI (LUCCA) USA United Kingdom, SO31 4RF Italia Tel: +1 (561) 320-9162 Tel: +44 (0) 2380 98703 0 Telefono: +39 0583 975 114 Fax: +1 (561) 320-9176 Fax: +44 (0) 2380 98703 9 Fax: +39 0583 974 824 info@pce-americas.com info@industrial-needs.com info@pce-italia.it www.pce-instruments.com/us www.pce-instruments.com/english www.pce-instruments.com/italiano

The Netherlands Chile Hong Kong

PCE Brookhuis B.V. PCE Instruments Chile S.A. PCE Instruments HK Ltd. Institutenweg 15 RUT: 76.154.057-2 Unit J, 21/F., COS Centre 7521 PH Enschede Santos Dumont 738, local 4 56 Tsun Yip Street Nederland Comuna de Recoleta, Santiago, Chile Kwun Tong Telefoon: +31 (0)53 737 01 92 Tel. : +56 2 24053238 Kowloon, Hong Kong Fax: +31 (0) 53 - 430 36 46 Fax: +56 2 2873 3777 Tel: +852-301-84912 info@pcebenelux.nl info@pce-instruments.cl jyi@pce-instruments.com www.pce-instruments.com/dutch www.pce-instruments.com/chile www.pce-instruments.cn

China

Turkey

PCE (Beijing) Technology Co.,Ltd PCE Teknik Cihazları Ltd.Şti. 1519 Room, 6 Building Halkalı Merkez Mah. Men Tou Gou Xin Cheng, Pehlivan Sok. No.6/C Men Tou Gou District 34303 Küçükçekmece - İstanbul 102300 Beijing Türkiye China Tel: 0212 471 11 47 Tel: +86 (10) 8893 9660 Faks: 0212 705 53 93 info@pce-instruments.cn info@pce-cihazlari.com.tr www.pce-instruments.cn www.pce-instruments.com/turkish

PCE Instruments PCE-LOC 20 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual