USER GUIDE Multifunction Process Calibrator Model PRC30
Introduction Thank you for selecting the Extech Model PRC30. This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Please visit the Extech Instruments website (www.extech.com) to check for the latest version of this User Guide. Extech Instruments is an ISO-9001 certified company. Safety International Safety Symbols This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information.
Meter Description 1. AC adaptor input jack 2. Display 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.
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 powered up, a short self-test will ensue after which the display will stabilize. 2. When the battery symbol flashes on the display, replace the battery as soon as possible. Low battery power may cause inaccurate readings and erratic meter operation. 3. This instrument is equipped with Auto Power OFF which turns the meter off after 10 minutes of inactivity.
OFFSET ADJUSTMENT The offset adjustment can be used to correct any known linearity errors with the thermocouple. 1. 2. 3. 4. 5. Select the measure mode and a thermocouple type (J/K/T/E/C/R/S/N). Press and Hold the SET button for 1 second to enter the offset adjust mode. Press the ▲ or ▼ button to change the offset value. Press and Hold the SET button for 1 second to zero the offset value. Momentarily press the SET button to save the change and exit the function.
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 M1 0.0 C o o (32.0 F) M2 o 100.0 C (32.0 F) o 200.0 C o (392.0 F) o 300.0 C o o 500.0 C (932.0 F) o 750.0 C o o 400.0 C 25.00mV o o (572.0 F), 10.00mV o o o 0mV o (32.0 F) (212.0 F) (392.0 F) o o 0.0 C 100.0 C 200.0 C 1000.0 C T/C mV o o 750.0 C Type E o 100.0 C o 500.0 C (1382.0 F) M5 o (212.
Modes of Operation Temperature MEASURE (Input) Mode of Operation 1. Turn the meter ON. 2. “MEASURE” will 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.
Current and Voltage MEASURE (Input) Mode of Operation In this mode, the unit will measure up to 50mADC or 20VDC 1. Turn the meter ON. 2. “MEASURE” will appear in the display. 3. Press and hold the MODE button for 1 second to select mA, mA with loop power 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.
Tilt Stand / Hanger The rear stand is provides two methods for convenience in viewing. 1. Pull the bottom portion of the stand out to place the unit on a flat surface for viewing. 2. Pull the bottom and top portions of the stand out, and then rotate the stand to allow 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.
Specifications Display Dot matrix LCD Cold junction compensation 0.03°C per °C (0.
Range Specifications T/C Source and Measure Ranges Resolution ° ° ° ° ° ° Type J -58 to 1832 F (-50 to 1000 C) Type K -58 to 2498 F (-50 to 1370 C) Type T -184 to 752 F (-120 to 400 C) Type E -58 to 1382 F (-50 to 750 C) ° ° ° ° ° ° ° ° Type C 32 to 3182 F (0 to 1750 C) Type R 32 to 3182 F (0 to 1750 C) Type S 32 to 3182 F (0 to 1750 C) Type N -58 to 2372 F (-50 to 1300 C) mV Measure: -10mV to 60mV Source: -5mV to 55mV ° ° 0.1 (measure) ° 1 (source) ± (0.05% + 1 C /1.
