Ideal ND2351 User Manual

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#61-494
#61-495

49 0 Series

Industrial Grade Multimeter

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3

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1. LCD Display

2. Function Buttons

3. Data Log Features

4. Rotary Function Switch

5. Input Connectors

WARNING!

1. DO NOT UNDER ANY CIRCUMSTANCES EXCEED THESE RATINGS:

- Voltage is not to exceed 1000 Volts.

- Resistance, Capacitance, Logic and Continuity functions are not to be performed on circuits
capable of delivering greater than 600 Volts.

- Current measurements are not to be performed on circuits capable of delivering greater than
500 Volts

True RMS
Data Logging

M/M/A

True RMS
Data Logging

M/M/A

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Auto Hold Button

• The auto hold button toggles the auto hold function on or off.

• Place the meter in manual range mode to activate this
feature.

• Auto hold is activated when the first stable reading is achieved.

• When activated, the meter beeps when the reading is updated, and it is displayed in the sub-display with

annunciator.

• This function is not available on the 2GΩ range.

Blue Button

• The blue button toggles between the black and blue functions on the dial.

M/M/A Button

• The M/M/A button toggles between the stored minimum, maximum and average values captured during
peak hold.

• The MIN/MAX/AVG value is displayed in the sub-display with the appropriate annunciator.

• To escape this function, press the M/M/A button for 2 seconds.

• Pressing the M/M/A button for > 2 seconds prior to entering M/M/A mode enables the store function.

Store Function

• Press the M/M/A button for 72 seconds to enter the store function.

• Pressing the M/M/A key in store mode stores the displayed measurement into the memory.

• Up to 1000 data points can be stored into memory for future analysis.

• When memory is full, the meter will beep twice after each key press.

• Pressing the range button for > 2 seconds exits store mode and returns to normal measurements.

REL Button

• This function displays the differential between the measurement and a stored value.

• The displayed measurement is stored in memory when this function is activated.

• This value is displayed in the sub-display with the annunciator.

• All new measurements will be subtracted from the stored value, and the difference will be displayed in
the main display.

• Pressing the REL for > 2 seconds enables the recall function.

Recall Function

• In recall mode, use arrow keys, ▲ ▼, above the light and bar buttons to scroll through the stored read­ings.

• Press and hold the arrow keys to scroll faster (10 data points/second)

• Press the REL button for > 2 seconds to exits recall function and returns to normal measurements.

2. To avoid electrical shock hazards and/or damage to the meter:

- Do not exceed the voltage ratings for the meter. Use caution when measuring voltage.

- Do not use during electrical storms. AC power sources with inductive loads or electrical storms may
result in high voltage. High energy transients can damage meter and present a dangerous shock hazard.

- Turn off power to the circuit or device being measured before taking resistance and capacitance
measurements. Fully discharge all capacitors before measuring.

3. Ensure meter is in proper working order before using. Visually inspect meter for damage. Performing a
continuity check can verify proper operation. If the meter reading goes from overload to zero, this
typically means the meter is in proper working order.

4. Visually inspect leads for damage before using. Replace if insulation is damaged or leads appear suspect.

5. Never ground yourself when taking electrical measurements. Do not touch exposed metal pipes, outlets,
fixtures etc. Keep your body isolated from ground by using dry clothing, rubber shoes, mats, or any
other approved insulating material. Keep your fingers behind the finger guards on the probes. Work
with others.

6. Before beginning all unknown measurements, set meter to highest possible range.

7. Before breaking a circuit for testing, turn off the power to the circuit. When disconnecting from a circuit,
disconnect the hot lead first, then the common lead.

8. Disconnect the meter from the circuit before turning off any indicator, including motors, transformers and
solenoids.

Function Buttons

The meter beeps once for every valid key-press, and beeps twice for every invalid key-press.

Backlight Button

• The light button is used to turn the backlight on or off.

• This function is disabled in DATA LOG mode.

BAR Button

• The bar button toggles the analog bar graph between left justified and zero centered.

• Available for DC voltage and current measurements only.

• This function is disabled in DATA LOG mode.

Peak Hold Button

• The peak hold button toggles the peak hold function on or off.

• The beeper sounds when a new minimum or maximum value is detected.

AH

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Data Log Functions (continued)

Data log-in

A. Press the Peak Hold button for > 2 seconds while in data logging mode enables the data log-in func-

tion.
B. The meter begins storing data points into memory according to the selected log rate.
C. Pressing the Peak hold button while in the mode interrupts data log-in for log-rate resetting. “PAUS”

is displayed on the secondary menu while the data flow is interrupted.
D. While data is being stored into memory, “-“ is shown on the secondary display.
E. When 40K data points have been stored, the data log-in stops, the bar is full, the “-“ begins blinking,

and FULL is displayed on the secondary display.

Log Rate Function

Press the auto hold button while in data logging mode to select the log rate.
Select from 0.5”, 1”, 10”, 30”, 60”, 120”, 180”, 240”, 300”, 360”, 480”, and 600”.
Press the auto hold button to escape and return to data logging mode.

Overload Protection

Function Overload Protection

VAC & VDC 1000V
AAC & ADC 1A/500V

10A/500V
Ohms (Ω) 600VAC/600VDC
Diode 600VAC/600VDC
Continuity 600VAC/600VDC

Unit of Measure Multipliers

For your reference, the following symbols are often used to make measurement easier:
Symbol

Verbal Multiplier
M mega x 1,000,000
K kilo x 1,000
m milli ÷ 1,000
µ micro ÷1,000,000

Additional Features
Auto fuse detection: The meter checks the integrity of the internal fuses for the mA and A measurements.
Probe input guard: The meter beeps continuously and displays “ProbE” if a probe is inserted in a current

input connector for other measurement functions.

Buzzer: A single beep indicates correct operation; two beeps indicate a warning or error condition.
Peak Hold: ±(0.7% +20) additional error for > 20% of full scale and pulse width greater than 0.5mS;

±(10% +20) additional error for > 50% of full scale on 2V range.

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Range Button

• Pressing the range button for 2 seconds toggles the meter between auto and manual ranging mode.

• When in manual range mode, pressing the button changes the measurement range.

• Pressing the range button while in AC voltage measurements for > 2 seconds enables the dB/dBm func­tion.

• While in dB/dBm mode, pressing the range button toggles between dB and dBm.

dB/dBm Function

• The reading of dB or dBm appears on the secondary display.

• The reference resistance reading for dBm is 600Ω_and the reference voltage for dB is 1V.

• Pressing the range button for > 2 seconds exits dB/dBm mode and returns to AC voltage measurements.

Data Log Features

The range button and the M/M/A are the only buttons enabled in data logging mode. All other buttons per­form the data logging functions labeled in red directly above the button. The auto power off function is also
disabled.

Press the blue button for > 2 seconds to enter data logging mode. Changing the rotary function switch
escapes data logging mode without storing data to memory. Pressing the blue button while in data logging
mode returns to normal measurements.

Data quantities (61-495): 40K readings form as sequence number on sub-display up to 9999 and each 1
⁄4 scale of bar indicates 10K. (61-494) 6K readings form as sequence number on sub-display up to 6000.

Max pause time: 4095 seconds; exceeding the maximum pause times stores data as 4095 seconds.
Max pause and log rate: 3.6k

▲ ▼ Functions

While in data logging mode, the light button and bar button scroll up and down through the data logging
menu selections.

Data Log Functions

Data log-out

A. Press the Peak Hold button while in data logging mode enables the data log-out function.
B. The first data displayed is the last data point logged in.
C. Pressing the ▲ ▼ buttons scrolls up and down through the data.
D. Pressing the ▲ ▼ buttons for > 2 seconds scrolls up and down through the data at a rate of 10 data

points/seconds, and stops at the reading when the button is released.

E. Pressing the M/M/A button while in this mode toggles between the maximum and minimum values

logged into memory. Pressing for > 2 seconds escapes.

F. Pressing the range button while in this mode toggles the turning points logged-in with “MAX” or

“MIN” symbol depending on the comparison from the current reading and the next reading. Press the
range key again to escape.