PCE Instruments PCE-LOC 10 Users guide

© PCE Instruments

PCE-LOC 10 Loop Calibrator

User Manual

User manuals in various languages (français,

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

русский, 中文) can be found by using our

product search on: www.pce-instruments.com

Last change: 23 January 2020

v1.0

English

© PCE Instruments

Contents

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

2 Specifications ........................................................................................ 2

3 Layout and Functions ........................................................................... 3

3.1 Device layout ................................................................................................................... 3

3.2 LCD layout ....................................................................................................................... 4

4 Device Maintenance .............................................................................. 4

4.1 General maintenance ....................................................................................................... 4

4.2 Battery replacement ......................................................................................................... 5

4.3 Fuse replacement ............................................................................................................ 6

5 Operating Instructions ......................................................................... 6

5.1 Power on/off ..................................................................................................................... 6

5.2 Automatic power-off ......................................................................................................... 7

5.3 Device output ................................................................................................................... 7

5.4 Measurement procedure .................................................................................................10

6 Performance Index .............................................................................. 12

7 Calibration ........................................................................................... 13

8 Warranty ............................................................................................... 13

9 Disposal ............................................................................................... 13

© PCE Instruments

1

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.

• 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.

© PCE Instruments

2

2 Specifications

Current simulation (active)

(max. burden 1 kOhm)

Area

Resolution

Accuracy

0 ... 22-mA

0.001-mA

± 0.05% of sim. value + 4 µA

Current simulation (passive)

(max. burden 1 kOhm / max. 5 ... 25V DC)

Area

Resolution

Accuracy

0 ... 22-mA

0.001-mA

± 0.05% of sim. value + 4 µA

Voltage transmitter f. current
loop Area

Resolution

Accuracy

24V DC / 25-mA

± 10%

Voltage measurement

Area

Resolution

Accuracy

-0.2 ... 28V

1 mV

± 0.02% of meas. + 2 mV

Current measurement

Area

Resolution

Accuracy

-1 ... 22-mA

0.001-mA

± 0.02% of meas. + 4 µA

Current measurement

(Loop current with voltage transmitter function)

Area

Resolution

Accuracy

0 ... 22-mA

0.001-mA

± 0.02% of meas. + 4 µA

More specifications

Power supply

2 x 1.5V AA batteries

Max. Tension

30V

Operating conditions

0 ... 50°C / 32 ... 122°F, < 80% RH

Storage conditions

-10 ... 60°C / 14 ... 140°F, < 95% RH

Dimensions

180 x 90 x 47 mm / 7.1 x 3.5 x 1.9 in

Weight

Approx. 500 g / 1.1 lbs

© PCE Instruments

3

3 Layout and Functions

3.1 Device layout

1. LCD Display

6. 25% single step/Auto-ramp

2. Power

7. 0%-100% of setting/Auto-ramp start

3. Output/Input toggle

8. Output value set

4. mA% unit select

9. Input digit select

5. Single step/Auto toggle

10. Input/Output terminal

1 2 5 9 3 4 6 7 8

10

© PCE Instruments

4

3.2 LCD layout

• OUTPUT - press the output/input button (3) until the OUTPUT symbol appears. The
device is now in an output state.

• INPUT - press the output/input button (3) until the INPUT symbol appears. The device
is now in an input state.

• CAL – The calibration symbol denotes that the device is in a state of calibration.

• 0 FS – When the symbols 0 or FS appear during the calibration process, it denotes that

the device is now calibrating the zero point or the full scale point respectively.

• - When the battery symbol appears, it denotes that the battery is almost depleted
and needs replacement.

• ▲ – this symbol denotes that the output digits need setting.

• mA%/V – These symbols denote the units of both present input and output values.

• ON / OFF – These symbols denote the status of the input/output signals.

• - These symbols denote the high and low-speed of the auto-ramp and auto-

step ramp.

4 Device Maintenance

This section provides some basic maintenance procedures. Repair, calibration, and servicing not
covered in this manual must be performed by qualified personnel. For maintenance procedures
not described in this manual, please contact Support.

4.1 General maintenance

• Periodically wipe the case down with a damp cloth and detergent; do not use abrasives
or solvents.

• Remove the batteries if the device is not to be used for a prolonged period of time.

• Dirt or moisture in the terminals can affect the readings and should be avoided. Clean

the terminals as follows:

o Turn the device off and remove all test leads.
o Shake out any dirt, accumulated in the terminals.
o Soak a cotton swab with alcohol and clean each terminal.

© PCE Instruments

5

4.2 Battery replacement

This Instrument is powered by two AA batteries (IEC LR6).

Warning

To avoid electrical shock or personal injury:

• Remove all test leads before opening the battery cover.

• Close the battery cover and tighten the screw before using the device again.

Note

• New and old batteries should not be mixed.

• Make sure to match the polarity of the batteries with the polarity on the device.

• Remove the batteries if the device is not to be used for a prolonged period of time.

• Dispose of the old batteries according to local regulations and law.

Replace the batteries as follows (refer to Figure 3.1):

• Remove all test leads before opening the battery cover.

• Remove the device protector.

• Remove the battery cover by unscrewing the screw with a screwdriver.

• Replace with two new batteries;

• Reinstall the battery case, tighten the screws and replace the device protector.

Figure 3.1 Battery replacement

© PCE Instruments

6

4.3 Fuse replacement

Warning
To avoid personnel injury or damage to the device, use only the specified fuse (63mA 250V fast­melt).
Replace the fuse as follows (refer to Figure 3.2):

• Turn the device off and remove all test leads.

• Remove the device protector.

• Remove the back cover by unscrewing the four screws with a screwdriver.

• Replace the blown fuse(s).

• Reinstall the cover.

• Reinstall the device protector.

Figure 3.2 Fuse replacement

5 Operating Instructions

5.1 Power on/off

• Press the power button to turn the device on.

• Press and hold the power button for 1 second to turn the device off.

• After turning the device on, an internal self-diagnosis procedure is carried out before

the display is turned on.

Note
To prevent damage to the device, it is recommended to wait 5 seconds after turning the device
off, before turning it on again.

© PCE Instruments

7

5.2 Automatic power-off

As per factory default, the device turns off automatically after 15 minutes of inactivity.
This feature can be adjusted by the user as follows:

• With the device turned off, press the mA%/V and the power button simultaneously to
turn the device on.

• Release the power button as soon as the display shows all of the content.

• The device is now in calibration mode and the symbols AP-XX are shown on the

display.

• Use the ▲ or ▼ buttons to toggle between AP-OFF and AP-ON.

• Press the 100%/START button to store the changes.

• Press the power button to exit.

5.3 Device output

The device produces a DC current from its appropriate output terminal （OUTPUT) set by the
user or it can simulate transmitter output.

Caution
Do not apply voltage to the output terminal during the operation. If any improper voltage is applied
to the output terminal, it will cause damage to the internal circuitry.

Function
Operation

% Operation

Display

Setting Range

DCI 20mA

20 mA  %

00.000 mA

-025.00 mA %

00.000～22.000 mA

-025.00～112.50 mA %

5.3.1 Current output

• Insert one end of the test lead to the + mA – output jack（OUTPUT）of the device and
connect the other end with the input of the device as shown in Figure 5.1.

• Press the output/input toggle button (3) so that the OUTPUT symbol appears on the
display. The device is now in an output state.

• Press the mA%/V unit select button (4) so the device displays mA or mA%; where 0%
is 4mA and 100% is 20mA.

• Use the ◄ or ► buttons to select the output digits.

• Use the ▲ or ▼ buttons to change the value of the set digits. The value can be rounded

or decremented automatically. Press and hold the button for one second to change the
value continuously.

© PCE Instruments

8

MAX

30V30V

MAX MAX

30V

INPUT

OUTPUT

COM

mA

V

+LOOP

XMT+mA-

+

Figure 5.1 Current output

5.3.2 25% step current output

• Connect the test leads to the device as in Figure 5.1.

• Press the output/input toggle button (3) so that the OUTPUT symbol appears on the

display. The device is now in an output state.

• Press the 25%/RAMP button, the or ▲ symbols will be displayed.

• Press the mA%/V unit select button (4) so the device displays mA or mA%.

• Use the ▲ or ▼ buttons to change the output value in 25% increments; where 0% is

4mA and 100% is 20mA.

• Press the 25%/RAMP button again to exit the step current output.

5.3.3 Current Output Set for Zero Point & Full Scale

• Connect the test leads to the device as in Figure 5.1.

• Press the output/input toggle button (3) so that the OUTPUT symbol appears on the

display. The device is now in an output state.

• Press the 100%/START button and the , ▲, 0 and FS symbols will be displayed.

• Use the ▲ or ▼ buttons to change the output value from 100% (20mA) and 0% (4mA).

• Press the 100%/START button again to exit the step current output.

© PCE Instruments

9

5.3.4 Auto ramp output

• Connect the test leads to the device as in Figure 5.1.

• Press the output/input toggle button (3) so that the OUTPUT symbol appears on the

display. The device is now in an output state.

• Press the STEP/AUTO button, the OUTPUT, OFF and 4mA symbols will be displayed.
The device is now in ramp mode.

• Press the 25%/RAMP key again to change the type of output slope, which is displayed
at the lower left of the display. The types are displayed as Ʌ S, , Ʌ F in the correct
order. These symbols indicate low-speed ramps and high-speed ramps, respectively.
The former has a maximum cycle of 60s, the latter has a maximum cycle of 30s, and
the auto-step ramp pauses for 5s at each step.

• When the ON symbol is displayed, press the 100%/START button to start setting the
waveform output.

• Press the 100%/START button again, the output will be paused at the current value
and the OFF symbol will be displayed.

• Press the button again, to continue the stepped output from the paused value.

• When the OFF symbol appears, press any of the buttons ▲, ▼, ◄, ► to return the

output to 0%. Then, the value of 4 mA will be displayed.

5.3.5 Simulating transmitter output (XMT)

• Insert one end of the test lead to the XMT output jack of the device and connect the
other end with the input of the device as shown in Figure 5.2.

• The key-operation is the same as that of the current output.

MAX

30V30V

MAX MAX

30V

INPUT

OUTPUT

COM

mA

V

+LOOP

XMT+mA-

+

5--25VDC Power

Power

Figure 5.2 XMT output connection

Note

• Range of power supply: 5 to 25VDC

• Connect a 24V DC power supply to the device while operating the current output, to

prolong the working life of the battery.

© PCE Instruments

10

5.4 Measurement procedure

Warning
During operation, do not apply more than 30V between any two terminals or between any terminal
and the ground. Any voltage exceeding 30V can not only damage the instrument, but can also
cause personal injury.

Caution

• Do not apply a voltage or current to the input terminals exceeding the measurement
range during operation, as it can cause damage to the device.

• Cut off the power supply to the device before connecting any test leads, as it may cause
damage to the device.

Input procedure

Function
Operation

%Operation

Display

Measurement Range

DCI 20 mA
 
DCV 28 V

20 mA



%

00.000 mA

-25.00 mA %

0.000 V

-1.000～22.000 mA

-31.25～112.50 mA %

-0.2000～28.000 V

5.4.1 DC current measurement

• Insert one end of the test lead to the mA jack（INPUT）of the device and connect the
other end with the input of the device as shown in Figure 5.3.

• Press the output/input toggle button (3) so that the INPUT symbol appears on the
display. The device is now in an input state.

• Press the mA%/V unit select button (4) so the device displays mA or mA%; where 0%
is 4mA and 100% is 20mA.

• The device now begins to measure. ON and the measured result are now shown on
the display.

• The measurement refresh rate is twice per second. If the measured result exceeds the
measuring range, OL will be shown on the display.

MAX

30V30V

MAX MAX

30V

INPUT

OUTPUT

COM

mA

V

+LOOP

XMT+mA-

+

Figure 5.3 DC current measurement input

© PCE Instruments

11

5.4.2 DC voltage measurement

• Insert one end of the test lead to the V jack（INPUT）of the device and connect the
other end with the input of the device as shown in Figure 5.4.

• Press the output/input toggle button (3) so that the INPUT symbol appears on the
display. The device is now in an input state.

• Press the mA%/V unit select button (4) so the device displays V.

• The device now begins to measure. ON and the measured result are now shown on

the display.

• The measurement refresh rate is twice per second. If the measured result exceeds the
measuring range, OL will be shown on the display.

MAX

30V30V

MAX MAX

30V

INPUT

OUTPUT

COM

mA

V

+LOOP

XMT+mA-

M

+

Figure 5.4 DC voltage measurement input

© PCE Instruments

12

5.4.3 24V power supply connection for measuring loop current

• Insert the test leads into the V and mA input jacks（INPUT）of the device as shown in
Figure 5.5.

• The key-operation is the same as that of the DC current measurement.

MAX

30V30V

MAX MAX

30V

INPUT

OUTPUT

COM

mA

V

+LOOP

XMT+mA-

+

Transmitter

Figure 5.5 24V power supply connection

6 Performance Index

Output Performance Index (applicable to temperature range from 18℃ to 28℃, within one year
after calibration)

Output

Range

Output
Range

Resolution

Accuracy

Remark

DCA

20mA

0.000～

22.000mA

0.001mA

±0.05% set
value
±4uA

Max. load
1KΩat 20mA.

Simu-transmitter
(absorption current)

-20mA

0.000～-

22.000mA

0.001mA

±0.05% set
value
±4uA

Max. load
1KΩat 20mA.
Note: power
supply range:
5～25VDC

Loop Power Supply

24V

10%

Max. output
current up to
25mA.

Input Performance Index (applicable to temperature range from 18℃ to 28℃, within one year
after calibration)

Input

Range

Output
Range

Resolution

Accuracy

Remark

Voltage

28V

-0.200～

28.000V

1mV

±0.02%
reading±2mV

Input resistance
about 1MΩ

Current

20mA

-1.000～

22.000mA

0.001mA

±0.02%
reading±4uA

resistance about
20Ω

Loop
Current

20mA

0.000～

22.000mA

0.001mA

±0.02%
reading±4uA

providing 24V loop
power

© PCE Instruments

13

7 Calibration

Each PCE-LOC 10 is delivered factory calibrated. To have the device recalibrated, please contact
PCE Deutschland GmbH.

Unintentional changes in the internal calibration menu can cause problems, e.g. inaccuracies.

8 Warranty

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

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

9 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

14

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.: [phone] Téléphone: [phone] Tel. : [phone]
Fax: [phone] Numéro de fax: [phone] Fax: [phone]
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol

Germany United Kingdom Italy

PCE Produktions- und PCE Instruments UK Ltd PCE Italia s.r.l.
Entwicklungsgesellschaft mbH Unit 11 Southpoint Business Park Via Pesciatina 878 / B-Interno 6
Im Langel 26 Ensign Way, Southampton 55010 Loc. Gragnano
D-59872 Meschede Hampshire Capannori (Lucca)
Deutschland United Kingdom, SO31 4RF Italia
Tel.: [phone] Tel: [phone] Telefono: [phone]
Fax: [phone] 9971 Fax: [phone] Fax: [phone]
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/deutsch www.pce-instruments.com/english www.pce-instruments.com/italiano

The Netherlands China Hong Kong

PCE Brookhuis B.V. PCE (Beijing) Technology Co., Limited PCE Instruments HK Ltd.
Institutenweg 15 1519 Room, 6 Building Unit J, 21/F., COS Centre
7521 PH Enschede Zhong Ang Times Plaza 56 Tsun Yip Street
Nederland No. 9 Mentougou Road, Tou Gou District Kwun Tong
Telefoon: [phone] 102300 Beijing, China Kowloon, Hong Kong
[e-mail] Tel: [phone] Tel: [phone]
www.pce-instruments.com/dutch [e-mail] [e-mail]
www.pce-instruments.cn www.pce-instruments.cn

United States of America Turkey

PCE Americas Inc. PCE Teknik Cihazları Ltd.Şti.
711 Commerce Way suite 8 Halkalı Merkez Mah.
Jupiter / Palm Beach Pehlivan Sok. No.6/C
33458 FL 34303 Küçükçekmece - İstanbul
USA Türkiye
Tel: [phone] Tel: [phone]
Fax: [phone] Faks: 0212 705 53 93
[e-mail] [e-mail]
www.pce-instruments.com/us www.pce-instruments.com/turkish