PR8111、PR8112_user_manual_eng_20191015H.pdf - 第11页

Operating Precautions 8 Connecting Cables • The maximum input volt age is 250 VDC. Attempting to measure volt age in excess of the maximum input could destroy the instrument and result in personal injury or death. • The …

Operating Precautions

How to install batteries: "Installing Alkaline Batteries" (p. 17)

How to connect the adapter:"Connecting the AC adapter" (p. 18)

If you connect the AC adapter while batteries are installed in the instrument, the AC

adapter takes precedence.

Using the Batteries

• To avoid electric shock, turn off the POWER switch and disconnect the AC adapter

and connection cables before replacing the batteries.

• After replacing the batteries, replace the cover and screws before using the instru-

ment.

• Battery may explode if mistreated. Do not short-circuit, recharge, disassemble or

dispose of in fire.

• Handle and dispose of batteries in accordance with local regulations.

• Keep batteries away from children

• Do not mix old and new batteries, or different types of batteries. Also, be careful to

observe battery polarity during installation. Otherwise, poor performance or damage from

battery leakage could result.

• Use only the specified type of battery (six LR20 alkaline batteries).

• To avoid corrosion and damage to this instrument from battery leakage, remove the bat-

teries from the instrument if it is to be stored for a long time (for a month).

• After use, always turn OFF the power.

• You can check the remaining battery life with the LED on the left side of the instrument. (p.

10)

Using the AC Adapter

• Use only the supplied Model 9418-15 AC Adapter. AC adapter input voltage range is

100 to 240 VAC (with ±10% stability) at 50/60 Hz. To avoid electrical hazards and

damage to the instrument, do not apply voltage outside of this range.

• To avoid electrical accidents and to maintain the safety specifications of this instru-

ment, connect the power cord provided only to a 3-contact (two-conductor +

ground) outlet.

• Turn the instrument off before connecting the AC adapter to the instrument and to

AC power.

• Before turning the instrument on, make sure the supply voltage matches that indi-

cated on the AC adapter. Connection to an improper supply voltage may damage

the instrument or AC adapter and present an electrical hazard.

• For safety reasons, disconnect the power cord when the instrument is not used and

before connecting it to a device to be tested.

• To avoid damaging the power cord, grasp the plug, not the cord, when unplugging it from

the power outlet.

Operating Precautions

Connecting Cables

• The maximum input voltage is 250 VDC. Attempting to measure voltage in excess

of the maximum input could destroy the instrument and result in personal injury or

death.

• The maximum rated voltage between input terminals and ground is 300 VAC, DC.

Attempting to measure voltages exceeding 300 V with respect to ground could

damage the instrument and result in personal injury.

• To avoid electrical accidents, confirm that all connections are secure. The

increased resistance of loose connections can lead to overheating and fire.

• To avoid experiencing an electric shock or causing a short-circuit at the input ter-

minals, only insulated crimp contacts should be used on wires being connected to

input pins. (The input terminal pin diameter is M6.)

1.1 Product Overview and Features

The PR8111 and PR8112 are compact, lightweight, highly portable pen recorders. You can select

from two power sources (AC adapter or dry-cell batteries) according to where the instrument is

being used, assuring your ability to record data immediately and easily with unparalleled reliability,

wherever you are.

Overview Chapter 1

1.1 Product Overview and Features

Record, verify, and notate

measurement results in the field

Measurement results are recorded on paper, allowing

them to be easily verified. You can also make notes on the

paper in the field. Additionally, the instrument can measure

voltage output from other equipment, allowing it to be used

in maintenance applications such as corrosion prevention

systems. It can also record analog output, for example

from sensors and physics or chemistry instruments.

Assess changes in easy-to-see

color waveforms by watching

pen movements

The instrument can use red, green, and blue

pens (option). Waveforms are easy to see, even

outdoors, and can be stored for extended periods

of time. Additionally, you can assess waveform

changes in real time simply by watching the in-

strument’s pens as they move.

Preserve important recordings

Record with the front cover open to protect

recording paper from dirt on the ground.

Record with the front cover closed to keep out

dust and wind.

You can also use the included drip-proof vinyl

cover to protect the instrument from water

droplets and dust.

Select the power source

according

to your location

The instrument can be operated us-

ing either the AC adapter or dry-cell

batteries.

Easily compare and

verify results on paper

You can easily discover changes

and abnormalities by comparing

recordings with previously record-

ed waveforms.