Extech Instruments PRC30 Manuale utente

USER GUIDE

Multifunction Process Calibrator

Model PRC30

2 PRC30-en-EU_V1.3 7/14

Introduction

Thank you for selec ing he Ex ech Model PRC30. This device is shipped fully es ed and calibra ed

and, wi h proper use, will provide years of reliable service. Please visi he Ex ech Ins rumen s

websi e (www.ex ech.com) o check for he la es version of his User Guide. Ex ech Ins rumen s is

an ISO-9001 cer ified company.

Safety

International Safety Symbols

This symbol, adjacen o ano her symbol or erminal, indica es he user mus refer o he

manual for fur her informa ion.

This symbol, adjacen o a erminal, indica es ha , under normal use, hazardous vol ages

may be presen

Double insula ion

Safety Notes

 Do no exceed he maximum allowable inpu range.

 Turn he uni OFF when he device is no in use.

 Remove he ba eries if he device is o be s ored for longer han 60 days.

 Never dispose of ba eries in a fire. Ba eries may explode or leak.

 Never mix ba ery ypes. Always ins all new ba eries of he same ype.

Cautions

 Improper use of his me er can cause damage, shock, injury or dea h. Read and unders and

his user manual before opera ing he me er.

 Always remove he es leads before replacing he ba ery.

 Inspec he condi ion of he es leads and he me er i self for any damage before opera ing he

me er. Repair or replace any damage before use.

 If he equipmen is used in a manner no specified by he manufac urer, he pro ec ion provided

by he equipmen may be impaired.

3 PRC30-en-EU_V1.3 7/14

Meter Description

1. AC adaptor input jack

2. isplay

3. Power ON/OFF

4. Source output adjustment arrow buttons

5. Set button

6. Unit button (thermocouple type, °F or °C)

7. I/O button

8. MEM (memory STEP button)

9. Backlight/ZERO button

10. Input/Output jacks and Thermocouple mini-connector

Display Layout

1. SOURCE mode icon

2. ZERO function status icon

3. Thermocouple type

4. MEASURE mode icon

5. Loop Power icon

6. Auto Power OFF active icon

7. Battery status icon

8. Measure mode value

9. Measure mode units icon

10. atalogger memory location

11. Source mode value

12. Source mode units icon

13. Cold Junction Compensation (CJC) circuit status (ON or OFF)

4 PRC30-en-EU_V1.3 7/14

Keypad Descriptions and Operation

POWER BUTTON and AUTO POWER OFF FEATURE

1. Use the POWER button to turn the unit ON or OFF. When the unit is po ered up, a short

self-test ill ensue after hich the display ill stabilize.

2. When the battery symbol flashes on the display, replace the battery as soon as possible.

Lo battery po er may cause inaccurate readings and erratic meter operation.

3. This instrument is equipped ith Auto Po er OFF hich turns the meter off after 10 minutes

of inactivity. To override this feature; press and hold the POWER button until the display

icon “ATP” turns off.

UNIT BUTTON

Momentarily press the UNIT button to select °F or °C in the temperature function, to select mA or %

in the current function or to select mV/V in the voltage function (voltage is autoranging in the

MEASURE mode)

TYPE BUTTON

Press and Hold for 1 second the TYPE/UNIT button to change the thermocouple type (J, K, T, E, C,

R, S, N or mV) in the temperature function.

I/O BUTTON

Momentarily press the I/O button to select either SOURCE (output) or MEASURE (input).

MODE BUTTON

Press and Hold the MODE / I/O button for 1 second in the MEASURE mode to select the

measurement function (temperature, voltage, current, or current ith loop po er).

CJC ON/OFF

In the temperature function, simultaneously press the IO and MEM buttons to turn the CJC (cold

junction compensation) on or off. The CJC icon ill indicate the status.

Note: CJC should normally be ON.

(Backlight) BUTTON

Momentarily press the Backlight button to turn the backlight on or off.

ERO ( ) BUTTON

In the MEASURE mode, Press and Hold the ERO ( ) button for 1 second to zero the meter.

5 PRC30-en-EU_V1.3 7/14

OFFSET ADJUSTMENT

The offset adjustment can be used to correct any kno n linearity errors ith the thermocouple.

1. Select the measure mode and a thermocouple type (J/K/T/E/C/R/S/N).

2. Press and Hold the SET button for 1 second to enter the offset adjust mode.

3. Press the ▲ or ▼ button to change the offset value.

4. Press and Hold the SET button for 1 second to zero the offset value.

5. Momentarily press the SET button to save the change and exit the function.

► ◄ ▼ and ▲ BUTTONS

The arro buttons are used to adjust the output value in the SOURCE mode.

1. Select the SOURCE mode

2. Press the ► or ◄ button select a digit for adjustment. The blinking underline curser

identifies the digit selected.

3. Press the ▼or ▲button to adjust the value of the digit. Press and Hold the ▼or ▲ button to

rapidly adjust the value.

SET BUTTON

The SET button is used to manually step through the 5 stored output values.

1. Select the SOURCE mode

2. Press the SET button and the value stored in memory location 01 ill be sourced. “MEM.01”

appears in the display.

3. Each press of the SET button ill step through the 5 memory locations.

4. The arro buttons can be used to adjust the value in each memory location.

STEP/MEM BUTTON

The STEP/MEM button is used to automatically step through the 5 stored output values. The meter

can be set for a single cycle of the stored values or a continuous cycle.

1. Select the SOURCE mode

2. Press and Hold the STEP/MEM button. ”STEPSS” (single cycle) and “STEPSC” (continuous

cycle) ill alternately appear in the display. Release the button hen the desired mode is

displayed.

3. In single cycle mode the meter ill source the value displayed in MEM01 for 5 seconds. The

meter ill then advance to MEM02 for 5 seconds. This ill continue through MEM05 and

then step do n through the memory locations. The cycle ill end hen MEM01 has been

reached.

4. In the continuous mode the cycle ill continue until manually stopped.

5. Momentarily press the MEM button to stop the cycle. “END” ill briefly appear in the display.

6 PRC30-en-EU_V1.3 7/14

STORING VALUES INTO MEMORY

There are 5 memory locations for each function. The default values stored in the locations are:

Memory

Location

Type

J, K, C, R, S, N

Type

T/C mV

M1 0.0

(32.0

0.0

(32.0

0.0

(32.0

0mV

M2 100.0

(212.0

100.0

(212.0

100.0

(212.0

10.00mV

M3 500.0

(932.0

200.0

(392.0

200.0

(392.0

25.00mV

M4 750.0

(1382.0

300.0

(572.0

F),

500.0

(932.0

40.00mV

M5 1000.0

(1832.0

400.0

(752.0

750.0

(1382.0

50.00mV

Memory

Location

mA % mV V

M1 4.00mA 0.0% 0mV 0V

M2 8.00mA 25% 500mV 5V

M3 12.00mA 50% 1000mV 10V

M4 16.00mA 75% 1500mV 15V

M5 20.00mA 100% 2000mV 20V

To change the values in memory:

1. Select the SOURCE mode

2. Press the SET button to select the memory location to be changed.

3. Press the arro buttons to adjust to the ne value

4. Momentarily press the MEM button to store the value. The memory location icon ill blink

hile the value is being stored..

7 PRC30-en-EU_V1.3 7/14

Modes of Operation

Temperature

MEASURE (Input) Mode of Operation

1. Turn the meter ON.

2. “MEASURE” ill appear in the display.

3. Press and Hold the MODE button for 1 second to select the temperature function.

4. Press and Hold the TYPE button to select the thermocouple type.

5. Momentarily press the UNIT button to select °F or °C.

6. Connect the thermocouple to the meter.

7. Read the measurement on the display.

Note: See the keypad description section to turn CJC on/off.

SOURCE (Output) Mode of Operation

In this mode, the unit can source the equivalent mV value for the temperature and the

thermocouple type selected. The values can be output either manually or stepped from memory

as described earlier.

1. Turn the meter ON

2. MEASURE” ill appear in the display.

3. Press and Hold the MODE button to select the temperature function.

4. Press and Hold the TYPE button to select the thermocouple type.

5. Momentarily press the UNIT button to select °F or °C.

6. Momentarily press the “I/O” button to select SOURCE.

7. Connect the Calibration Cable from the meter to the device to be calibrated.

8. Use the ▲ and ▼

buttons to set the desired output value in the lo er display. The upper

display indicates the actual temperature or voltage value being sourced. If the upper display

does not match the set value, check the batteries or the connections to the device being

calibrated.

8 PRC30-en-EU_V1.3 7/14

Current and Voltage

MEASURE (Input) Mode of Operation

In this mode, the unit ill measure up to 50mADC or 20VDC

1. Turn the meter ON.

2. “MEASURE” ill appear in the display.

3. Press and hold the MODE button for 1 second to select mA, mA ith loop po er or mV

4. Connect the Calibration Cable to the meter.

5. Connect the Calibration Cable to the device or circuit under test.

6. Read the measurement on the LCD display.

SOURCE (Output) Mode of Operation

In this mode, the unit can source current up to 24mADC at 1000 ohms or voltage up to 20.00V.

The current or voltage can be output either manually or stepped from memory as described

earlier.

1. Turn the meter ON

2. “MEASURE” ill appear in the display.

3. Press and Hold the MODE button for 1 second to select a current or voltage function.

4. Momentarily press the “I/O” button to select SOURCE.

5. Momentarily press the UNIT button to select % / mA or mV / V.

6. Connect the Calibration Cable to the meter

7. Connect the Calibration Cable to the device or circuit under test

8. Use the

arro

buttons to set the desired output value in the lo er display. The upper

display indicates the actual current or voltage value being sourced. If the upper display does

not match the set value, either the batteries need to be replace of the load impedance is

beyond the specified range.

9 PRC30-en-EU_V1.3 7/14

Tilt Stand / Hanger

The rear stand is provides t o methods for convenience in vie ing.

1. Pull the bottom portion of the stand out to place the unit on a flat surface for vie ing.

2. Pull the bottom and top portions of the stand out, and then rotate the stand to allo the unit

to be hung.

Battery Replacement

When the battery icon appears on the display, the six AA batteries must be replaced.

The battery compartment is located on the rear of the meter.

1. Open the tilt stand, loosen the captive Philips head scre and remove the battery cover.

2. Remove and replace the batteries, observing polarity.

3. Replace and secure the battery cover.

All EU users are legally bound by the Battery Ordinance to return all used batteries to

community collection points or herever batteries / accumulators are sold.

Disposal in household trash or refuse is prohibited.

Disposal: Follo the valid legal stipulations in respect of the disposal of the device at the

end of its lifecycle

Battery Safety Reminders

 Please dispose of batteries responsibly; al ays observe local, state, and federal regulations

ith regard to battery disposal.

 Never dispose of batteries in a fire. Batteries may explode or leak.

 Never mix battery types or old and ne batteries. Al ays install ne batteries of the same

type.

10 PRC30-en-EU_V1.3 7/14

Specifications

Display Dot matrix LCD

Col junction compensation 0.03°C per °C (0.02°F per °F)

Thermocouple Stan ar an Scale NIST 175, ITS-90

Current output capability 24mADC at 1000 ohms

Voltage input impe ance 10kohms minimum

Meter Power 6 AA batteries or AC a aptor

Auto Power OFF Meter automatically powers off after 10 minutes of inactivity

Operating Temperature 5ºC to 40ºC (41ºF to 104ºF)

Storage Temperature -20 ºC to 60 ºC (- 4 ºF to 140 ºF)

Operating Humi ity Max 80% up to 31ºC (87ºF) ecreasing linearly to 50% at

40ºC (104ºF)

Storage Humi ity <80%

Operating Altitu e 7000ft (2000meters) maximum

Dimensions 159 x 80 x 44 mm (6.3 x 3.2 x 1.7") `

Weight 225g (8 oz.) without batteries

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