190 TPI (Test Products Int), 190 Datasheet - Page 13

• Manufacturer Part Number: 190
• Description: DMM AUTO-RANGE W/BOOT IND HVAC
• Manufacturer: TPI (Test Products Int)
• Series: 190r
• Type: Digital (DMM)r

Specifications of 190

• Lead Free Status: Contains lead
• Includes: Battery, Test Leads
• Style: Handheld
• Display Digits: 4.75
• Display Type: LCD, Bar Graph
• Display Count: 50000
• Function: Voltage, Current, Resistance, Capacitance, Frequency
• Functions, Extra: Continuity, Diode Test
• Features: Auto Off, Backlight, Hold, Min/Max, RS-232 Port, Sleep
• Ranging: Auto/Manual
• Response: True RMS
• Other names: 190TPI

23
e. Measuring Resistance
Instrument set-up:
FUNCTION
Do not attempt to make resistance measurements with
circuit energized. For best results, remove the resistor
completely from the circuit before attempting to measure
it.
NOTE:
To make accurate low ohm measurements, short the ends
of test leads together and record the resistance reading.
Deduct this value from actual readings.
Measurement Procedure:
1. Disconnect power to circuit to be measured.
2. Plug black test lead into the
3. Plug red test lead into
4. Set the rotary switch on the DMM to the
5.Connect the test leads to the circuit to be measured.
6. Read the resistance value on the LCD.
WARNING!
COM
BLACK
TEST LEAD
RED
TEST LEAD
COM
input jack.
MINIMUM
READING
0.01Ω
input jack.
50.000MΩ
MAXIMUM
READING
function.
f. Measuring Diodes
Instrument set-up:
FUNCTION
CAUTION
Do not attempt to make diode measurements with circuit
energized. The only way to accurately test a diode is to
remove it completely from the circuit before attempting to
measure it.
Measurement Procedure:
1. Disconnect power to circuit to be measured.
2. Plug black test lead into the
3. Plug red test lead into
4. Set the rotary switch to the
5. Connect the black test lead to the banded end of the diode
6. Reading on the display should be between 0.5 and 0.8
7. Reading test lead connections in 5 above.
8. Reading on the display should be OFL(Overflow).
NOTE: If diode reads 0 in both directions, diode is
shorted. If diode reads OFL in both directions, diode
is open.
and the red test lead to the non-banded end of the diode.
volts.
BLACK
TEST LEAD
COM
RED
TEST LEAD
COM
input jack.
function.
MINIMUM
READING
0.001V
input jack.
MAXIMUM
READING
2.0000V
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