PROVA 123 Manuale utente
CALIBRATOR
PROCESS
ENTER
0-24mA
K J E T
7
．
%
_%
%
8
0
4-20mA
mV 1V
12V
4
1
C F
0-20mA
5°
2
Hz
mV
V
9
°C
°F
mA
SHIFT
ON/OFF
6
3
-+
TC
-
+
+
-
°
Process Calibrator
Model 123
PROVA INSTRUMENTS INC.
Features:
1. 4-20mA (1KΩload, 24V Loop Supply)
2. 0-100.00mV,0-1.000V, 0-12.000V
3. K, J, E, T Thermocouple (°C and °F)
4. Frequency 1-62500Hz
5. 0.025% Basic Accuracy
6. Easy Key-pad Operation
7. Easy Step and Auto Ramp Functions
8. 0-20mA, 0-24mA selectable
9. 0-100% Input (mA, mV, V )
10. Beeper warning when output is open(mA) or short (mV,V)
Table of Contents
I. PANEL DESCRIPTION..............................................................................................................1
II. OPERATING INSTRUCTION.................................................................................................6
1.MAOUTPUT.................................................................................................................................6
1a. General Operation 4 - 20mA........................................................................................6
1b. Select 0 - 20mAor 0 - 24mA........................................................................................7
1c. Enter a value less than 1................................................................................................8
2.MV, VOUTPUT..........................................................................................................................9
2a. General Operation 0 - 100mV......................................................................................9
2b. Select 0 - 1V or 0 - 12V................................................................................................10
2c. Enter a value less than 1..............................................................................................11
3.HZ,FREQUENCYOUTPUT ......................................................................................................11
4a. General Operation.........................................................................................................12
4b. Select
°
C, or
°
F...........................................................................................................14
4c. Select K, J, E, or T typeThermocouple................................................................16
4d. Enter a NegativeTemperature...................................................................................18
5.%INPUT IN THE MA,MV, VFUNCTIONS ................................................................................19
6.EASYSTEP IN THE MA,MV, AND VFUNCTIONS ..................................................................21
7.AUTO RAMP IN THE MA,MV, AND VFUNCTION....................................................................23
8.HOW TO GET NEGATIVE OUTPUT..........................................................................................26
III. ELECTRICAL SPECIFICATION.........................................................................................27
IV. USE THEAC ADAPTER.......................................................................................................32
V. USE EXTERNAL BATTERY PACK...................................................................................33
VI. BATTERY REPLACEMENT................................................................................................34
1
I. Panel Description
1.LCD DISPLAY 6. NUMERICAL & FUNCTION KEYPAD
2.THERMOCOUPLE SOCKET 7. STAND
3.ON/OFF BUTTON 8. AC ADAPTOR INPUT SOCKET
4.SHIFT BUTTON 9. OUTPUT LEADS
5.FUNCTION SELECT SWITCH
7
8
1
K J E T
0-24mA
ENTER
PROCESS
CALIBRATOR
6
_
%
．
7
0
8
%
%
mV 1V
4-20mA
1
4
12V °
2
°
5
0-20mA
C F
9V
mV
Hz
mA
F
°C
°
5
ON/OFF
SHIFT
3
6
TC+
-
4
3
2
9
2
1.mVAHz: Units
2.04-204mA : Range of mA
3.%: Percentage
4.JKET: Thermocouple type
5. : Ramp
6.OPR : Operate, Output, Normal
7.OL: Overload, Output, Abnormal
8.STBY: Standby, Internal Calibration in Progress
9.SHIFT: Select SHIFT functions
10. : Batterylow
3
4-20mA 0-20mA 0-24mA
123
mV 1V
12V
4
1
.
Press SHIFT button, and then press one of these three buttons to select desired mA
range
2.
Press SHIFT button, then press this button to select desired mV or V range
12V
4-20mA
mV 1V
7
．
%
C F
0-20mA
8
_%
%
0
45°°
ENTER
9
0-24mA
K J E T
6
123
4
3.
Press SHIFT button, then press this button to select °C or °F
4.
Press SHIFT button, then press this button to select desired type of thermocouple.
5.
Press SHIFT button, then press this button to perform auto-ramp function. To stop
the auto-ramp function, press this button again
C F
°°
5
K J E T
6
7
5
6.
Press this button to enter negative temperature. Or press SHIFT button, then press
this button first to enter percentage in the mA, mV, and V functions.
7.
While the calibrator is in the SHIFT mode, and the percentage is entered, press this
button to increment %.
8.
Always press this button to complete the entry of numbers.
%
．
_
0
%
8
%
ENTER
6
II. Operating Instruction
1. mA Output
1a. General Operation 4 - 20mA
1 Turn the power on, and wait until the STBY symbol disappears (about 1
min.)
2 Plug the test leads into the output connectors of calibrator accordingly
(Black to black, red to red). Attach alligator clip if necessary.
3 Move the sliding switch to mA position
4 Press the keypad (including the decimal point) to enter the value of mA
directly.
5 Using the test leads or alligator clips, touch or clip on the terminals to be
calibrated.
Note: Always waits until STBY (standby) symbol in the LCD disappears before
any operation.
Note: Maximum 5 digits can be entered. If users enter less than 5 digits (1 to 4
digits), users must press ENTER button to indicate the end of entry. If users
enter 5 or more digits, calibrator will automatically end the entry and output
specified value current.
312
CALIBRATOR
0-24mA
ENTER
PROCESS
%
_
．
%%
0
4
12V
mV 1V
4-20mA
7
°
5
0-20mA
C F
8
Hz °C
°F
SHIFT
6
V
mV
9
K J E T
mA
ON/OFF
+
-TC
8.000mA
°
7
1b. Select 0 - 20mA or 0 - 24mA
The default setting for mA function is 4 - 20mA. But users can select 0 - 20mA or 0
-24 mA by pressing the SHIFT button to enter the SHIFT mode. Then press the
NUMBER 2 or NUMBER 3 button to select desired DC current range. After desired
range is selected, press the shift button to exit the SHIFT mode. Corresponding
current range symbol will be displayed in the LCD.
mV 1V
0-24mA
K J E T
CALIBRATOR
PROCESS
ENTER
%
%
．
_0
%
21
4-20mA
7
mV 1V
12V
4
0-20mA
8
C F
5°
Hz
F
°C
°
3
SHIFT
9mV
V
6
mA
ON/OFF
TC
-+
%
CALIBRATOR
PROCESS
0
%
．
_%ENTER Hz
F
°C
°
mV
ON/OFF
+
78
12V
45°C F
9V
6
K J E T
-TC
SHIFT
mA
° °
3
0-24mA
2
0-20mA
1
4-20mA
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