PR8111、PR8112_user_manual_eng_20191015H.pdf - 第13页

1.2 Names and Functions of Parts 10 1.2 Names and Function s of Part s Front Panel Handle POWE R switch (p. 19) Turns t he power on and off. :Power OFF :Power ON Power LED Lights up when th e instrumen t is being supplie…

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.

1.2 Names and Functions of Parts

Front Panel

Handle

POWER switch (p. 19)

Turns the power on and off.

:Power OFF

:Power ON

Power LED

Lights up when the instrument is being supplied with power.

Green Lights up when power is being supplied by the

AC adapter. When using batteries, indicates

ample remaining battery life.

Orange Indicates limited remaining battery life. It is rec-

ommend to have new batteries ready to use.

Red Indicates low remaining battery life. It is recom-

mended to replace the batteries in the instru-

ment with new batteries.

Operating panel (p. 11)

Front cover (p. 21)

Keeps wind and dust out of the instrument.

The cover can be removed. It opens from above.

Note: When using roll paper, either remove the

front cover or use the instrument with the cover

open. Recording data with the front cover closed

may cause paper to jam in the chart tray.

(Example: PR8112)

Chart cover (p. 12)

Holds down the recording paper.

Chart holder

(Located underneath the platen)

Stores new recording paper. (p. 14)

Chart tray

Stores paper after waveforms have been

recorded. Fanfold paper will be folded here.

Pen holders (p. 16)

(Located toward the rear of the instrument)

Holds the pens. For more information about

compatible pens, see "Options" (p. 2).

Pen lever

• CHART SET (top)

Use when changing recording paper. The pens

will move up (away from the recording paper) and

to the right.

• UP (middle)

Use when changing pens or to disable recording.

The pens will move up (away from the recording

paper). Cap pens when not recording.

• DOWN (bottom)

Use when recording. The pens will be in contact

with the recording paper, allowing them to record

data.

Pen cap storage pins (p. 16)

Store caps on these pins while the pens are being

used so they don’t get lost.

Platen

Holds down the recording paper.

Sprockets

Feed the recording paper using a series

of holes along its edges.

When the chart

cover is open

1.2 Names and Functions of Parts

RANGE knob

Selects the measurement range, allowing

you to choose the range that best suits

the voltage being measured. The 500 set-

ting is used exclusively for mV ranges.

mV/V switch

Selects the unit for the measurement

range selected with the RANGE knob.

POSITION knob

Adjusts the pen’s zero point (0 V position)

by moving its position. When the ZERO/

MEAS switch is in the ZERO position, the

pen can be moved throughout the entire

effective recording width.

ZERO/MEAS switch

• MEAS: Use when measuring data. (You can start recording by placing

the START/STOP/FEED switch in the START position.)

• ZERO: Use when adjusting the pen’s zero point.

(You can move the position with the POSITION knob.)

CHART SPEED knob

Selects the chart speed, allowing you to

change the speed at which the recording

paper is fed through the instrument.

Operating Panel

h/min switch

Selects the unit for the speed set with the CHART SPEED

knob. You can select either minutes (min) or hours (h).

(Example: PR8112)

START/STOP/FEED

switch

Starts and stops the paper feed.

• START: Starts feeding paper through

the instrument.

• STOP: Stops feeding paper through

the instrument.

• FEED (by pushing the switch past

STOP): Feeds paper through the

instrument. There are four feed

speeds. You can increase the feed

speed by pressing and holding the

switch in the FEED position for at

least 2 seconds.

SPAN (p. 12)

Allows the recording width to be adjusted

using a screwdriver. This adjustment is

not usually used during normal operation.

Use as necessary when adjusting the in-

strument, for example during calibration.

• To increase the width: Turn clockwise.

(The recording width can be

increased by a maximum of about

20%.)

• To decrease the width: Turn counter-

clockwise. (The recording width can

be decreased by a maximum of about

20%.)

AC adapter terminal (p. 18)

Connect the included AC adapter here.

Battery bay and cover (p. 17)

When using batteries to power the instrument, load six

LR20 alkaline batteries here. Since the battery cover is

held in place with screws (M3), a Phillips head screw-

driver is required in order to change the batteries.

FG terminal

Use this terminal, which is connected to the instrument’s

metal chassis, to ground the chassis. For best grounding,

use a cable of 3 m or less in length.

Rear Panel

CH2 POWER switch (p. 26)

Use this switch (available only on the PR8112 [2-pen

model]) to turn CH2 (pen 2) off. Turning off CH2 lowers

the instrument’s power consumption when using only one

channel.

(Example: PR8112)

Input terminals (p. 20)

Connect the measurement cables here.

Red: Connect the cable carrying the high signal.

Black: Connect the cable carrying the low signal.

On the PR8112, the upper two terminals are CH1,

and the lower two terminals are CH2.

The PR8111 has only the upper two terminals.