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Extech Instruments 422123, User Manual, Page: 2 / 9

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Extech Instruments 422123 User Manual Download Page 2

V  2.0    12/04 

2 

025

%
Hz

V

°C

TJK

E

SHIFT

1

2

3

4

6

5

Meter Description 

1. 

5-digit LCD display 

2. 

Numeric and Function Keypad 

3. 

Thermocouple input jack 

4. Power 

ON/OFF 

key 

5. 

SHIFT button (activates 2

nd

 functions on keypad) 

6. Function 

Switch 

 

NOTE:

 The battery compartment, tilt stand, and  

AC Adapter/External Battery Pack input jack 
are located on the rear of the meter. 
 
 
 
 
 
 
 

Keypad Function Commands 

 

 

1. 

Select output range for current 
mode 

2. 

Select output range for voltage 
mode 

3. Automatic 

Ramp 

Function 

(current and voltage only). 

4. 

Select output in % (current and 
voltage only). 
Also the “–“ key for negative 
values. 
Also the decimal point. 

5. 

Select temperature units and 
thermocouple type. 

6. 

Step function up and down 
(current and voltage only). 

 

 
 
 

1

2

3

4

5

6

Summary of Contents for 422123

Page 1: ... mA mV V Temperature C F and Frequency This device also offers STEP and AUTO RAMP features Careful use of this meter will provide years of reliable service Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at www TestEquipmentDepot com ...

Page 2: ...tilt stand and AC Adapter External Battery Pack input jack are located on the rear of the meter Keypad Function Commands 1 Select output range for current mode 2 Select output range for voltage mode 3 Automatic Ramp Function current and voltage only 4 Select output in current and voltage only Also the key for negative values Also the decimal point 5 Select temperature units and thermocouple type 6...

Page 3: ...d DC Milliamp Outputs 4 to 20 0 to 20 and 0 to 24mA 1 Ensure that the meter s test leads are not shorted or connected to any devices 2 Slide the function switch to the mA position and wait for the STANDY display to extinguish 3 Connect the meter s red positive and black negative test leads to the device or circuit under calibration Use banana to alligator leads if necessary 4 Select the desired mA...

Page 4: ...le to the device under calibration 4 Select the thermocouple type to simulate by pressing the SHIFT button and then the 6 KJET key until the desired type appears on the right side of the LCD Type K J E or T 5 After selecting the type press the SHIFT button again 6 Type a temperature output value using the numeric keypad and then press ENTER Note there is a 4 digit limit To type a negative temperat...

Page 5: ...to 100mV range All percentages in between will be linear to the voltage or current ranges 8 Refer to the list below for the 1 step value for each range 4 to 20mA 1 0 16mA 0 to 20mA 1 0 2mA 0 to 24mA 1 0 24mA 0 to 100mV 1 1mV 0 to 1V 1 0 01V 0 to 12V 1 0 12V Step Mode Current and Voltage Outputs Only This feature allows the user to step up and down through the output range in programmed steps as fo...

Page 6: ...use resume the ramp 5 Press the SHIFT button to exit this mode and return to normal operation Note Each 1 step has a time interval of 0 08 seconds therefore it takes 8 seconds to ramp from 0 to 100 Maintenance 9V Battery Replacement Open the battery compartment on the back of the meter by removing the Phillips head screw and battery compartment cover Replace the battery and secure the battery comp...

Page 7: ...2 o F 200 to 0 o C Accuracy 1 8 o F 1 0 o C 32 to 752 o F 0 to 400 o C Accuracy 1 5 o F 0 8 o C Frequency 1 to 125 Hz Accuracy 0 04Hz 126 Hz to 62 500 Hz Accuracy 0 01 0 04Hz Accuracy notes All published accuracies are of reading Meter must be warmed up for 20 minutes before use for optimum accuracy Power supply 9V battery external battery pack 6 x 1 5V AA or optional AC adapter Power Consumption ...

Page 8: ...28 490 19 492 12 494 07 496 03 498 00 500 00 502 00 504 03 506 07 508 13 510 20 512 29 514 40 516 52 518 67 520 83 523 01 525 21 527 42 529 66 531 91 534 18 536 48 538 79 541 12 543 47 545 85 548 24 550 66 553 00 555 55 558 03 560 53 563 06 565 61 568 18 570 77 573 39 576 03 578 70 581 39 584 11 586 85 589 62 592 41 595 23 598 08 600 96 603 86 606 79 609 75 612 74 615 76 618 81 621 89 625 00 628 1...

Page 9: ...4132 23 4166 66 4201 68 4237 28 4273 50 4310 34 4347 82 4385 96 4424 77 4464 28 4504 50 4545 45 4587 15 4629 62 4672 89 4716 98 4761 90 4807 69 4854 36 4901 96 4950 49 5000 00 5050 50 5102 04 5154 63 5208 33 5263 15 5319 14 5376 34 5434 78 5494 50 5555 55 5617 97 5681 81 5747 12 5813 95 5882 35 5952 38 6024 09 6097 56 6172 83 6250 00 6329 11 6410 25 6493 50 6578 94 6666 66 6756 75 6849 31 6944 44 ...

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