PCE Instruments PCE-LOC 10 User manual

PCE-LOC 10 Loop Calibrator

User Manual

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Last change: 23 January 2020

v1.0

English

 
 © PCE Instruments 
 
 
Contents 
1Safety notes........................................................................................... 1 
2Specifications........................................................................................2 
3Layout and Functions...........................................................................3 
3.1 Device layout ................................................................................................................... 3 
3.2 LCD layout....................................................................................................................... 4 
4Device Maintenance.............................................................................. 4 
4.1 General maintenance....................................................................................................... 4 
4.2 Battery replacement......................................................................................................... 5 
4.3 Fuse replacement ............................................................................................................ 6 
5Operating Instructions ......................................................................... 6 
5.1 Power on/off..................................................................................................................... 6 
5.2 Automatic power-off ......................................................................................................... 7 
5.3 Device output................................................................................................................... 7 
5.4 Measurement procedure .................................................................................................10 
6Performance Index..............................................................................12 
7Calibration ........................................................................................... 13 
8Warranty...............................................................................................13 
9Disposal ...............................................................................................13 
 
 
 

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 inthis 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.

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

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

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 wipethe 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:

oTurn the device off and remove all test leads.

oShake out any dirt, accumulated in the terminals.

oSoak a cotton swab with alcohol and clean each terminal.

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

4.3 Fuse replacement

Warning

To avoid personnel injury or damage to the device, use only the specified fuse (63mA 250V fast-

melt).

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.

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.

MAX

30V30V

MAXMAX

30V

INPUT

OUTPUT

COM

+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.

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