Extech Instruments 422123 Manuale utente

User's Manual

Precision Multifunction Calibrator

Model 422123

Model 422123 Ver. 1.1 April 2001

Introduction

Congratulations on your purchase of the Extech 422123 Precision Multifunction Calibrator.

This device can source mA, mV, V, Temperature (C/F) and Frequency. Its 24V loop power

supply drives current loads to 1000Ω. This device also offers STEP and AUTO RAMP

features. Careful use of this meter will provide years of reliable service.

Specifications

Display Large 5 digit multifunction LCD

Output (source) Ranges, Resolution, and Accuracy

DC Current 4 to 20.000mA, 0 to 20.000mA, 0 to 24.000mA

Accuracy for all mA ranges: ± (0.025% + 3 digits)

DC Voltage 0 to 100.00mV; 0 to 1.0000V; 0 to 12.000V;

Accuracy for all voltage ranges: ± (0.05% + 3 digits)

Type K Temperature -328 to 32oF (-200 to 0oC); Accuracy: ±2.0oF (1.1oC)

32 to 2400oF (0 to 1300oC); Accuracy: ±1.5oF (0.8oC)

Type J Temperature -148 to 32oF (-100 to 0oC); Accuracy: ±1.6oF (0.9oC)

32 to 1400oF (0 to 760oC); Accuracy: ±1.2oF (0.7oC)

Type E Temperature -148 to 32oF (-100 to 0oC); Accuracy: ±1.6oF (0.9oC)

32 to 1292oF (0 to 700oC); Accuracy: ±1.2oF (0.7oC)

Type T Temperature -328 to 32oF (-200 to 0oC); Accuracy: ±1.8oF (1.0oC)

32 to 752oF (0 to 400oC); Accuracy: ±1.5oF (0.8oC)

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 60 to 180mA

Operating Conditions 32 to 122oF (0 to 50oC); 85% RH max.

Storage Conditions -4 to 140oF (-20 to 60oC); 85% RH max.

Dimensions 3.46 x 6.61 x 1.03" (88 x 168 x 26mm)

Weight 11.63 oz. (330g)

Accessories Test leads (banana to alligator clip type), carrying case, 9V

battery, battery-pack with six 1.5V AA batteries, and two

temperature cables (Type-K & Type J; sub-miniature to sub-

miniature connector type).

Model 422123 Ver. 1.1 April 2001

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 2nd 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.

Operation

Powering the meter

1. Select a means of powering the unit (9V battery, external pack, or optional AC

adapter). The AC Adapter is recommended for heavy usage. The 9V battery

compartment is located on the rear (bottom) of the meter secured by one Phillips head

screw. The AC adapter and the External Battery Pack plug into the DC12V jack located

on the back of the meter just above the tilt stand. The Battery Pack holds six 1.5V 'AA'

batteries.

2. Press the red ON/OFF button to turn the meter ON.

3. Wait until the STANDBY display extinguishes before using the meter.

4. To turn the meter OFF, press the red ON/OFF button again.

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 output range by pressing the SHIFT button and then one of the

following keys:

The '1' key for 4-20mA output

The '2' key for 0-20mA output

The '3' key for the 0-24mA output

5. Enter a mA output using the numeric keys (for example, press '5', then ENTER to

output 5mA). Note that the 5-digit LCD can only accept 5 digits.

6. If the circuit under calibration opens or if the load that the meter is driving is greater

than 1000Ω, the meter will display the OL (overload) alarm warning and a series of

alarm tones will sound.

Model 422123 Ver. 1.1 April 2001

DC Voltage Source (0 to 1V, 0 to 12V, 0 to 100mV)

1. Ensure that the meter's test leads are not shorted or connected to any devices.

2. Slide the function switch to the 'V, mV' position and wait for STANDBY to extinguish.

3. Connect the meter's red (positive) and black (negative) test leads to the device or

circuit under test. Use alligator clips if necessary.

4. Select the desired output range by pressing the SHIFT button and then the '4' key until

the range is selected. The following meter displays (on left) correspond to the ranges

shown at right:

00.000 V: 0 to 12.000V range

0.0000 V: 0 to 1.0000V range

000.00 mV: 0 to 100.00mV range

5. Once the proper range is selected, press the SHIFT button again.

6. Enter an output voltage value using the numeric keys (for example, in the 100mV

range, press '50', then ENTER to output 50mVDC). Keep in mind that the maximum

number of digits that can be entered is 5.

7. If the circuit under calibration is shorted, the meter will display the OL (overload) alarm

warning and a series of alarm tones will sound.

Temperature Output (Type K, J, E, T Thermocouple Simulations)

1. Move the function switch to the 'oC/oF' position and wait for the STANDY display to

extinguish.

2. Connect the thermocouple connection cable to the meter's TC output (the jack is

located just above the ON/OFF switch). 'K' and 'J' type connectors are supplied.

3. Connect the other end of the thermocouple cable to the device under calibration.

4. Select the thermocouple type to simulate by pressing the SHIFT button and then the '6'

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 temperature value, press the minus key

first (just below the '7' key), and then type the desired output temperature.

7. A signal will be sent to the device under calibration (a panel meter, for example)

simulating a thermocouple.

8. Press the shift key then the '5' key to change from oC to oF or from oF to oC.

NOTE: Connect the thermocouple connecting cable to the meter and the device under

calibration well in advance of use (20 minutes or so) to acclimate all devices to the ambient

temperature. This will ensure optimal precision.

Frequency Output (1kΩmin. load)

1. Ensure that the meter's test leads are not shorted or connected to any devices.

2. Slide the function switch to the 'Hz' position and wait for STANDBY to extinguish.

3. Connect the meter's red (positive) and black (negative) test leads to the device or

circuit under calibration. Use the banana-alligator clip leads if necessary.

4. Type the desired frequency using the numeric keypad. Note that the top (smaller) LCD

digits are a continuation of the main LCD digits string; this provides the full display

resolution required.

5. All frequencies below 125Hz are available in 1 Hz steps. Selected frequencies from

125 to 62,500 Hz are available per the list in the Appendix table at end of manual.

Model 422123 Ver. 1.1 April 2001

Advanced Functions

Programming an Output in Percent (Current and Voltage Outputs Only)

Output values can also be programmed in percent. For example, a 4 to 20mA output can

be programmed as follows: 0% = 4mA, 50% = 12mA, and 100% = 20mA. The main LCD

digits will reflect the actual output while the top (smaller) digits will display the percentage.

Follow these steps to output a signal in percent:

1. Setup a test as described earlier for a current or voltage output.

2. Press the SHIFT button so that the word SHIFT appears on the LCD.

3. Press the % key (located under the '7' key).

4. Enter a percentage from 0 to 100% (1% resolution) using the numeric keys.

5. Press the ENTER key.

6. The current or voltage signal will be output from the meter.

7. 0% corresponds to the lowest value in the range ('4mA' for 4 to 20mA, '0mV' for 0 to

100mV, for example.) while 100% corresponds to the highest value in the output range

('20mA' for 4 to 20mA range, '100mV' for 0 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 follows:

1. Setup a test as described earlier for a current or voltage output.

2. Press the SHIFT key and then the percent key (located below the '7' key).

3. Enter a percentage (1 to 100%) using the numeric keys. This percentage will represent

the size of each step. Press the ENTER key when complete.

4. Now each time the '8 % ' key is pressed, the output signal will be increased by the

percentage programmed (in the previous step). Press the '0 % ' key to step the

output down by the percentage programmed.

5. For example, for a 4 to 20mA output type and a step percentage of 25%, the following

steps are possible:

0% = 4mA

25% = 8mA

50% = 12mA

75% = 16mA

100% = 20mA

Model 422123 Ver. 1.1 April 2001



Tech Support Hotlines

781-890-7440 ext. 200

[email protected]

www.extech.com

Automatic Ramp Function (Current and Voltage Outputs Only)

The Auto Ramp feature adjusts the meter's output from 0 to 100% →100% to 0% →0 to

100%, and so on. The top (smaller) LCD displays the percent output while the main LCD

digits display the actual signal output.

1. Setup a test as described earlier for a current or voltage output.

2. Press the SHIFT key and then the '7' key.

3. The output signal will now ramp from 0 to 100% →100% to 0% →0 to 100%, etc.

4. Press the '7' key to pause/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

compartment.

Six 1.5V 'AA' External Battery Replacement

Open the battery pack by the Velcro flap and slide the battery tray out. Replace the six

batteries observing polarity.

Meter Cleaning

Periodically wipe the meter case with a damp cloth. Do not use abrasives or solvents to

clean the meter.

Calibration and Repair Services

Extech offers complete repair and calibration services for all of the products we sell.

For periodic calibration, NIST certification or repair of any Extech product, call customer

service for details on services available. Extech recommends that calibration be

performed on an annual basis to insure calibration integrity.

Model 422123 Ver. 1.1 April 2001

Appendix - Frequency Output Table

All frequencies below 125Hz (inclusive) are available in 1 Hz steps. However, only specific

frequencies above 126 (inclusive) are available. Refer to the Table below.

126.00 127.03 128.07 129.13 130.20 131.30 132.41 133.54

134.12 135.28 136.46 137.06 138.27 139.50 140.13 141.40

142.04 143.34 144.00 145.34 146.02 147.40 148.10 149.52

150.24 151.69 152.43 153.18 154.70 155.47 156.25 157.03

158.62 159.43 160.25 161.08 162.76 163.61 164.47 165.34

166.22 167.11 168.01 169.83 170.76 171.70 172.65 173.61

174.58 175.56 176.55 177.55 178.57 179.59 180.63 181.68

182.74 183.82 184.91 186.01 187.12 188.25 189.39 190.54

191.71 192.90 194.09 195.31 196.54 197.78 199.04 200.32

201.61 202.92 204.24 205.59 206.95 208.33 209.73 211.14

212.58 214.04 215.51 217.01 218.53 220.07 221.63 223.21

224.82 226.44 228.10 229.77 231.48 233.20 234.96 236.74

238.54 240.38 242.24 244.14 246.06 248.01 250.00 252.01

254.06 256.14 258.26 260.41 262.60 264.83 267.09 269.39

271.73 274.12 276.54 279.01 281.53 284.09 286.69 289.35

292.05 294.81 297.61 300.48 303.39 306.37 309.40 312.50

315.65 318.87 322.16 325.52 328.94 332.44 336.02 339.67

343.40 347.22 351.12 355.11 359.19 363.37 367.64 372.02

376.50 381.09 385.80 390.62 395.56 400.64 405.84 411.18

416.66 422.29 428.08 434.02 440.14 446.42 452.89 459.55

466.41 473.48 480.76 488.28 490.19 492.12 494.07 496.03

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

615.76 618.81 621.89 625.00 628.14 631.31 634.51 637.75

641.02 644.32 647.66 651.04 654.45 657.89 661.37 664.89

668.44 672.04 675.67 679.34 683.06 686.81 690.60 694.44

698.32 702.24 706.21 710.22 714.28 718.39 722.54 726.74

730.99 735.29 739.64 744.04 748.50 753.01 757.57 762.19

766.87 771.60 776.39 781.25 786.16 791.13 796.17 801.28

806.45 811.68 816.99 822.36 827.81 833.33 838.92 844.59

850.34 856.16 862.06 868.05 874.12 880.28 886.52 892.85

899.28 905.79 912.40 919.11 925.92 932.83 939.84 946.96

954.19 961.53 968.99 976.56 984.12 992.06

1000.00 1008.06 1016.26 1024.59 1033.05 1041.66 1050.42 1059.32

1068.37 1077.58 1086.95 1096.49 1106.19 1116.07 1126.12 1136.36

1146.78 1157.58 1168.22 1179.24 1190.47 1201.92 1213.59 1225.49

1237.62 1250.00 1262.62 1275.51 1288.65 1302.08 1315.78 1329.78

1344.08 1358.69 1373.62 1388.88 1404.49 1420.45 1436.78 1453.48

1470.58 1488.09 1506.02 1524.39 1543.20 1562.50 1582.27 1602.56

1623.37 1644.73 1666.66 1689.18 1712.32 1736.11 1760.56 1785.71

1811.59 1838.23 1865.67 1893.93 1923.07 1953.12 1960.78 1968.50

1976.28 1984.12 1992.03 2000.00 2008.03 2016.12 2024.29 2032.52

2040.81 2049.18 2057.61 2066.11 2074.68 2083.33 2092.05 2100.84

Model 422123 Ver. 1.1 April 2001

2109.70 2118.64 2127.65 2136.75 2145.92 2155.17 2164.50 2173.91

2183.40 2192.98 2202.64 2212.38 2222.22 2232.14 2242.15 2252.25

2262.44 2272.72 2283.10 2293.57 2304.14 2314.81 2325.58 2336.44

2347.41 2358.49 2369.66 2380.95 2392.34 2403.84 2415.45 2427.18

2538.07 2450.98 2463.05 2475.24 2487.56 2500.00 2512.56 2525.25

2438.07 2551.02 2564.10 2577.31 2590.67 2604.16 2617.80 2631.57

2645.50 2659.57 2673.79 2688.17 2702.70 2717.39 2732.24 2747.25

2762.43 2777.77 2793.29 2808.98 2824.85 2840.90 2857.14 2873.56

2890.17 2906.97 2923.97 2941.17 2958.57 2976.19 2994.01 3012.04

3030.30 3048.78 3067.48 3086.41 3105.59 3125.00 3144.65 3164.55

3184.71 3205.12 3225.80 3246.75 3267.97 3289.47 3311.25 3333.33

3355.70 3378.37 3401.36 3424.65 3448.27 3472.22 3496.50 3521.12

3546.09 3571.42 3597.12 3623.18 3649.63 3676.47 3703.70 3731.34

3759.39 3787.87 3816.79 3846.15 3875.96 3906.25 3937.00 3968.25

4000.00 4032.25 4065.04 4098.36 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 7042.25 7142.85

7246.37 7352.94 7462.68 7575.75 7692.30 7812.50 7936.50 8064.51

8196.72 8333.33 8474.57 8620.68 8771.92 8928.57 9090.90 9159.25

9433.96 9615.38 9803.92

10000.00 10204.08 10416.66 10638.29 10869.56 11111.11 11363.63 11627.90

11904.76 12195.12 12500.00 12821.51 13157.89 13513.51 13888.88 14285.71

14705.88 15151.51 15625.00 16129.03 16666.66 17241.37 17857.14 18518.51

19230.76 20000.00 20833.33 21739.13 22727.27 23809.52 25000.00 26315.78

27777.77 29411.76 31250.00 33333.33 35714.28 38461.53 41666.66 45454.54

50000.00 55555.55 62500.00

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects

in parts and workmanship for one year from date of shipment (a six month limited

warranty applies on sensors and cables). If it should become necessary to return the

instrument for service during or beyond the warranty period, contact the Customer

Service Department at (781) 890-7440 for authorization. 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 resulting from action of the

user such as misuse, improper wiring, operation outside of specification, improper

maintenance or repair, or unauthorized modification. Extech specifically disclaims any

implied warranties or merchantability or fitness for a specific purpose and will not be

liable for any direct, indirect, incidental or consequential damages. Extech's total liability

is limited to repair or replacement of the product. The warranty set forth above is

inclusive and no other warranty, whether written or oral, is expressed or implied.

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