1- or 2-Pen Chart Recording of DC Voltage Signals with
an Easy-to-Use Portable Pen Recorder
Pen Recorders are still an indispensable tool for field technicians requiring
on-the-spot printed reports during plant maintenance and troubleshooting. The Hioki
PR8111 and PR8112 Pen Recorders are suited for applications where keeping analog
records of measurement data are still required for complying with company standards.

Model No. (Order Code)

PR81111 Pen
PR81122 Pens

Note: Instrument does not include input cords.
Input terminals are Johnson terminals and require
connection of a power supply. *Connection Cord
L9257 can also be used.

Key Features

• Easily portable, compact size
• Support for three power sources, can be powered with dry-cell batteries
• Protection from dripping water and dust, ships with a drip-proof cover
• Pen-based, records data reliably
• Easy enough for anyone to use

Corrosion Protection Maintenance of Railroad Tracks

Electrical corrosion protection maintenance often requires recording waveforms outdoors and the recorded waveforms sometimes need to be stored for long periods of time. The PR8111 Pen Recorder's wide ranges, from highly-sensitive (1mV Range) to high voltage (250V Range), gives you the flexibility to use it in broad applications. The pen recorder is also used for leakage current measurement between the track or rail and buried facilities of DC electric railroads. The battery power functionality lets you use the PR8111 to record anywhere in the field.

Environmental Testing

Pen recorders are also widely used as recorders of measuring instruments for environmental testing. Since the recorder can be powered by batteries, it is particularly useful for recording outdoors without concern for AC power. Connect the following environmental sensors to record a variety of signals to conduct analysis and troubleshoot issues:

Sound level meter: Record noise in the vicinity of an airport
Illuminometer: Record changes during sunlight hours as a result of the construction of elevated railway tracks
Odor meter: Inspect deodorization equipment
Water quality meter: Monitor wastewater and inspect groundwater and hot spring water
Thermometer: Environmental assessment for agriculture
Power analyzer: Inspect power quality for railways
Anemometer: Conduct safety management for cranes and railways
Magnetic field meter: Identify the influence of a power line on the human body

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

No. of pens1 pen2 pens
Operating methodSelf-balancing, Disposable felt pen recording
InputDC voltage (Isolated input channels, isolated input and frame)
Measurement ranges±1 mV to 500 mV (9 ranges), ±1 V to 250 V (8 ranges)
Max. allowable input250 V DC (at V range), 30 V DC (at mV range), Max. rated voltage to earth: 300 V DC, AC, CAT II
Recording accuracy±0.5 % of effective recording width (excluding contraction and expansion of recording paper)
Recording width150 mm (5.91 in)
Pen interval5 mm (0.20 in)
Pen speed500 mm/s or greater (using AC adapter)
Chart speed10 mm/min to 600 mm/min (8 ranges), 10 mm/hr to 600 mm/hr (8 ranges)
Accuracy: ±0.25 % (at 500 mm or higher continuous recording)
Recording paperFanfold plain paper: SE-10Z-2, length: 15 m (49.22 ft)
Roll plain paper: SE-10, length: 20 m (65.62 ft)
Power supply(1) AC adapter 9418-15 (100 to 240 V, 50/60 Hz)
(2) D size alkaline battery (LR20) × 6 (When used with the AC adapter, the adapter takes precedence)
(3) DC power supply: 10 to 27 V DC (cable available by special order)
Continuous use time50 hr (based on in-house testing conditions, use LR20 batteries)25 hr (based on in-house testing conditions, use LR20 batteries)
Max. rated power4 VA (AC adapter, DC power) or 3 VA (dry-cell batteries)
Dimensions and mass292 mm (11.50 in) W × 177 mm (6.97 in) H × 182 mm (7.17 in) D, 3.9 kg (137.6 oz) (main unit only), 4.8 kg (169.3 oz) (with dry-cell batteries)292 mm (11.50 in) W × 177 mm (6.97 in) H × 182 mm (7.17 in) D, 4.4 kg (155.2 oz) (main unit only), 5.3 kg (186.9 oz) (with dry-cell batteries)
AccessoriesFelt pen P-1201A (Red) ×1, Recording paper SE-10Z-2 (fanfold) ×1, AC Adapter 9418-15 ×1, Front cover ×1, Drip-proof cover ×1, Instruction manual ×1Felt pen P-1201A (Red) ×1, Felt pen P-1202A (Green) ×1, Recording paper SE-10Z-2 (fanfold) ×1, AC adapter 9418-15 ×1, Front cover ×1, Drip-proof cover ×1, Instruction manual ×1
Catalog: PEN RECORDER PR8111, PR8112Download PDF  [1MB]English

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