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Extech Instruments 382065, Руководство пользователя

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Extech Instruments 382065 Скачать руководство пользователя страница 24

Model 382068   V3.0   4/2005 

24 

Wiring and Protocol 

Wiring 

In order to ignore hardware handshake, the wiring should be configured as shown in the 
diagram below (left). The RTS must be pulled low (-10V to -12V). Note: In QBASIC, add 
RS in the OPEN statement. The diagram at right is the DB-9 connector schematic. 

 
 
 
 
 
 
 
 
 
 
 

 

NOTE: For some computers, a 9-pin (male) to 25-pin (female) adapter is required. The wiring 
for such an adapter is shown below: 

 

 

  

 
 
 
 
 
 
 
 

Clamp Meter PC Interface activation 

No action required. Once connected to a PC, the meter is ready to communicate.  

Datalogging activation 

To start recording, press the clamp meter’s RECORD button (RECORD appears on the 
LCD). To stop recording, press the RECORD button again (RECORD icon switches off). 

Default RS-232 Settings 

Baud Rate: 9600; Stop bit: 1; Data bits: 8; Parity: None 

Communicating with the Clamp Meter 

To request data from the Clamp Meter, send a SPACE character to the Clamp meter from 
the PC (the ASCII code for the SPACE bar is 20 hex).  Having received a character, the 
meter will send a 9 byte string. Refer to the following sections. 

Decoding the 9 Data Bytes 

Each byte of the 9 byte string contains specific information and is used for a specific 
purpose. The information contained in the 9 byte string is shown in the following table: 

 

Byte 1  Byte 2 

Byte 3 

Byte 4 

Byte 5 

Byte 6 

Byte 7 

Byte 8 

Byte 9 

02 Function  Lower 

LCD 

Upper LCD 

Status1 

Status 2 

03 

 

 

5         1

 

9      6

PIN 2 
PIN 3 
PIN 4 
PIN 5 

RX 
TX 
DTR
GND

PIN 4
PIN 6
PIN 7
PIN 8

DTR
DSR
RTS
CTS

PIN 2  RX 
PIN 3  TX 
PIN 4  DTR 
PIN 5  GND 
PIN 6  DSR 
PIN 7  RTS 
PIN 8  CTS 

6

 

4

 

5

 

3

 

2

 

1

 

7

 

8

 

9

 

6

 

20

 

7

 

2

 

3

 

8

 

4

 

5

 

22

 

FG 

RXD 

TXD 

DTR 

GND 

DSR 

RTS 
CTS 

RI 

G 

FG 
RXD 
TXD 
DTR 
GND 
DSR 
RTS 
CTS 
RI 
G 

www.burntec.com

Содержание 382065

Страница 1: ...User s Manual Datalogging AC DC Power Clamp on Meter Model 382065 382068 www burntec com ...

Страница 2: ... Power Clamp on Meter Measurements include DC and AC True Power Apparent Power Power Factor and True RMS Voltage Current Watts Status indication for Lead Lag and PF is included as well as dual displays of KW PF KVA PF V A A Hz and V Hz The frequency of Voltage and Current measurements can be displayed also Datalogger and RS 232 PC interface features are built into the meter The Datalogger Data Acq...

Страница 3: ...Operating temperature 32 to 122 o F 0 to 50 o C Operating Humidity R H 80 non condensing Storage temperature 14 o to 140 o F 10 to 60 o C Storage Humidity RH 70 non condensing Dimensions Weight 10 24 x 3 66 x 1 77 260 x 93 x 45mm 1 lb 450g Accessories Carrying case test leads and 9V battery Range Specifications Accuracy specs are reading no of digits at 64 o to 82 o F 18 o to 28 o C and RH to 80 T...

Страница 4: ...cy Overload protection 20A 80A 0 1A 10 10 1100A 80A 1000A 0 1A 6 10 1100A Peak detect acquisition time 1ms Peak indication Range Resolution Accuracy Overload protection 20V 80V 0 1V 10 10 600Vrms 80V 600V 0 1V 6 10 600Vrms Peak detect acquisition time 1ms Audible continuity Range Continuity beeper Open circuit voltage Overload protection 50 Ω 3 2V 600Vrms Resistance Ω Range Resolution Accuracy Ope...

Страница 5: ...in this manual otherwise the protection provided by the meter may be impaired 6 Use caution when working with voltages above 60VDC or 30VAC RMS Such voltages pose a shock hazard 7 Before taking resistance or continuity measurements disconnect the circuit from the main power supply and disconnect all loads from the circuit 8 Safety Specifications Installation categories III Pollution degree 2 Altit...

Страница 6: ... 5 Peak Detector READ button 6 MIN MAX PEAK function button 7 DC A W ZERO button 8 RECORD button 9 LCD display 10 RS 232 PC Interface Jack 11 COM terminal 12 VΩHz terminal 13 Low battery indication 14 Analog Display 15 Bargraph Display 16 Units Symbols Figure 1 Figure 2 KW K KVA P P 3 3W MEM PF lead lag WL123 READ 3 4W Hz KVA MIN MAX HOLD RECORD READ 3 4W PF lead lag WL123 RECORD 3 3W MEM KVA KW H...

Страница 7: ... to COM and red lead to 3 Connect the probe end of the black test lead to the neutral line 4 Connect the probe end of the red lead to the power line 5 Clamp the meter onto the conductor where the red test lead is connected 6 The power clamp will automatically select the appropriate range 7 Read the Watt middle of display and PF top display values on the LCD 8 Press the READ button to scroll throug...

Страница 8: ...alue when PF is greater than 0 91 φ 25 use the following equation for a pure sine wave KVA KW PF KVA Apparent Power KVA 1000 A V KVAR Reactive Power KVAR 2 2 KW KVA 3φ3W AC DC Power Measurement Figure 4 Note The sign printed on the jaw must face the power source KW 600V MAX CAT WL12 3 3W 3 3W PF lag WL12 KW MAX 600V CAT WL12 PF lag 3 3W 3 4W KW 3 3W V 1000A Hz HOLD OFF www burntec com ...

Страница 9: ...d to the third phase eg T or L3 3 Clamp onto the third phase where the red test lead is connected eg T or L3 4 The meter will automatically select the proper range 5 Wait until the reading is stable about 6 seconds and then press the READ button C The power clamp will process these measurements and display the result WL123 appears in the upper left corner of the LCD and the 3φ3W power measurement ...

Страница 10: ... 382068 V3 0 4 2005 10 600V PF lag 3 3W WL123 KW MAX CAT HOLD Figure 5 Figure 6 600V CAT MAX WL 23 PF lag 3 3W KW MAX CAT 600V WL 23 PF lag 3 3W KW 3 4W V KW 3 3W 1000A Hz OFF HOLD WL 23 3 3W www burntec com ...

Страница 11: ...ment KW 600V MAX CAT PF lag WL1 3 4W MAX 600V CAT WL1 3 4W PF lag KW 3 4W 3 3W V 1000A KW Hz HOLD OFF WL1 3 4W Figure 7 HOLD CAT 600V MAX WL 2 PF lag KW 3 4W 600V CAT MAX PF lag WL 2 3 4W KW KW 3 3W 3 4W 1000A OFF Hz V WL 2 3 4W Figure 8 www burntec com ...

Страница 12: ...l 382068 V3 0 4 2005 12 600V CAT MAX PF lag KW WL 3 3 4W MAX 600V CAT 3 4W WL 3 3 4W PF lag KW OFF Hz V KW 3 3W 1000A HOLD WL 3 3 4W Figure 9 600V PF lag WL123 KW MAX CAT HOLD 3 4W Figure 10 www burntec com ...

Страница 13: ... until the reading is stable about 6 seconds then press the READ button WL2 will disappear and WL3 will appear prompting the user to take a WT L3 PFT L3 measurement C Measure WT L3 PFT L3 refer to figure 8 1 Disconnect the red test lead from the phase where the meter s jaws are clamped 2 Connect the red test lead to the third phase eg T or L3 phase 3 Clamp onto the phase where the red test lead is...

Страница 14: ...X 600V CAT PF lag WL12 3 3W KW KW MAX 600V CAT WL12 PF lag 3 3W 3 4W KW 3 3W V 1000A Hz HOLD OFF WL12 3 3W Figure 11 600V CAT MAX PF lag 3 3W WL 23 KW MAX CAT 600V WL 23 PF lag 3 3W KW 3 4W V KW 3 3W 1000A Hz OFF HOLD WL 23 3 3W Figure 12 www burntec com ...

Страница 15: ...t the proper range 7 Wait until the reading is stable about 6 seconds and then press the READ button 8 WL23 will appear prompting the user to take the WTS L2G measurement Figure 13 B Measure WTS or WL2G refer to figure 12 1 Disconnect the red test lead from the phase where the jaws are clamped 2 Connect the red test lead to the L2 line 3 Clamp onto the L2 line where the red test lead is connected ...

Страница 16: ...Set the rotary switch to the V position refer to figure 14 2 Insert the test leads into the input terminals black lead to COM and red to 3 Connect the probe ends of the test leads in PARALLEL to the circuit to be measured 4 The meter will automatically select the appropriate range and units AC or DC 5 Read the voltage and frequency values displayed on the LCD Note The sensitivity for frequency mea...

Страница 17: ... the reading the LCD will display while zeroing 3 Press the trigger to open the jaw 4 Fully enclose the conductor to be measured Do not allow a gap between the two jaw halves when measuring 5 The clamp will automatically select the appropriate range 6 Read the current and frequency values displayed on the LCD Note The current sensitivity for frequency measurements is 10A The frequency range is 45 ...

Страница 18: ...o the Ω position for both resistance and continuity measurements 2 Connect the black test lead to the COM terminal and the red test lead to the terminal 3 Connect the test leads to the circuit being measured and read the displayed resistance value Refer to Figure 16 4 For Continuity measurements an audible tone will sound when the reading is below 50Ω K HOLD Hz 1000A OFF V 3 4W 3 3W KW 600V CAT MA...

Страница 19: ...MAX display icons disappear from the LCD Peak Detection Peak Detect mode is used to capture fast transients signals to 0 1ms such as those caused by motor startup surges or arc welding equipment switching 1 Set the Function Switch to the Current or Voltage position 2 Engage the Peak detector by pressing and holding the READ button until a short beep is heard Note that if the button is held longer ...

Страница 20: ... recorded readings Continuous mode for use with PC interface only 1 In continuous mode the meter records one reading after another automatically Up to 4000 records can be recorded 2 Press and hold the RECORD until two tones are heard not available in 3φ3W and 3φ 4W function positions The meter will begin recording data and the RECORD icon will appear on the LCD 3 To exit the Record mode press and ...

Страница 21: ... 5 Click on the appropriate COM port when prompted 6 The Main Software Screen will appear see below Main Software Screen 1 GRAPH button Press to view real time data in x y plot format 2 LIST button View data in list format as it s recorded 3 TIME SET button Press to allow the PC system time to be used by the meter reflected in the TIME window item 8 4 MEMORY button Open Memory window see subsequen...

Страница 22: ...s is known as data acquisition Measuring and recording readings with meter connected to PC 1 With the meter connected to the PC and with the meter and the program running click the SAVE AS button on the Main Software window 2 Type a filename when prompted and click OK 3 The filename will appear on the Main Software window and the computer will begin storing the meter readings in real time to the f...

Страница 23: ...the Memory window In the example Memory window above there is one set with 3 records readings 5 Double click on a set to open the data file At that point the data can be printed saved plotted and viewed using the menu selection in the data window Import a stored data file in a spreadsheet 1 Open the spreadsheet program select OPEN FILE from the FILE menu 2 From the FILES OF TYPE in the OPEN window...

Страница 24: ...2 Settings Baud Rate 9600 Stop bit 1 Data bits 8 Parity None Communicating with the Clamp Meter To request data from the Clamp Meter send a SPACE character to the Clamp meter from the PC the ASCII code for the SPACE bar is 20 hex Having received a character the meter will send a 9 byte string Refer to the following sections Decoding the 9 Data Bytes Each byte of the 9 byte string contains specific...

Страница 25: ...it 1 Bit 0 Bt low battery Minus sign for lower LCD display Record Max Min Hold 00 01 10 PF KW V A PF KVA Byte 8 Byte 8 is the Status 2 byte representing the state of the LCD display indicators Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 n a P P Minus sign for upper LCD display Upper decimal refer to bit 2 for selection 00 100 01 10 1 10 10 2 11 10 3 Upper decimal refer to bit 0 for selection 0...

Страница 26: ...nty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects res...

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