General

Specification MKR181A
GS 80B12R07E 1st Dual channel recorder

General
The MKR181A Dual channel recorder consist of the
intelligent μR20000 recorder containing a microprocessor,
which has been modified for installation on a ship. The
instrument accepts heading and rudder angle signals
consisting of voltage signals between 0V to 5V DC. It
continuously records heading, quadrant and rudder angle
using pens, and also periodically prints the date, time, kind of
recording, unit, paper feed speed, recording color, and so on.

Features
1) The instrument has periodic printing and list printing
functions MKR181A Dual channel recorder
2) It has both analog and digital display functions.
- Display section
3) The feed speed of the recording paper can be
Display method : VFD (181 X 16dot matrix, 20 digits)
selected.
Digital display : Date in the dominical year and time
(25mm/h or 250mm/h)
Analog indication : Bar-graph indicate of Heading, Quadrant
4) This is useful for when evaluating and analyzing
and rudder angle
steering performance during a voyage.
5) The pens can be replaced easily. - Printing section
Time tick ( _ ), date (year, month), and time (hours,
Specifications
minutes), recording paper feed speed, tag names,
- Input section
measurement values, units and recording colors are
Heading input : 0V to 5V DC (full span 90 deg.)
printed on the left hand side.
000° to 90° ----------------- 0V to 5V DC
090° to 180° ----------------- 5V to 0V DC - Performance and characteristics
180° to 270° ----------------- 0V to 5V DC Insulation resistance :
270° to 000° ----------------- 5V to 0V DC Between each terminal and ground :20MΩ or higher
Quadrant input : 1.25V to 5V DC (at 500V DC)
First quadrant --------------- 1.25V DC Dielectric strength:
Second quadrant ----------- 2.50V DC Between each power supply terminal and grand :
Third quadrant --------------- 3.75V DC 1500V AC (50Hz/60Hz), 1 min
Fourth quadrant ------------- 5.00V DC Between each measuring input terminal and grand :
Rudder angle input : 0V to 5V DC 1000V AC (50Hz/60Hz), 1min
PORT 40° --------------------- 0V Between measuring input terminals:
MIDSHIP ---------------------- 2.5V 1000V AC (50/60Hz), 1min
STBD 40° --------------------- 5.0V Between each remote control terminal and ground :
500V DC, 1min
- Recording section
- Construction
Accuracy :±1.2° of heading, ±1.2° or less
Installation method :
Dead band : Heading 0.2°, Rudder angle 0.2°
Flash mount type & Wall mount type…Vertical mounting .
Recording method : Disposable felt pens
(The instrument may be inclined up to 30° to the rear ).
Measurement interval : 125ms (each channel)
Horizontal in left-right direction.
Recording paper : 180mm width, total length 20m, Z-fold
Material : Case ・・・・・・・ Steel
Recording paper feed speed : NOR --- 25mm/h
Front door ・・・ Aluminum casting
FAST -- 250mm/h
Bezel ・・・・・・・ Steel
Duration of recording paper :
Dimensions : Flash mount・・ 374(W) X 430(H) X 248(D)
About 1 month (when “NOR” speed is used)
Wall mount・・・ 374(W) X 430(H) X 270(D)
Recording color : Heading -- blue, Quadrant -- red
Weight : Flash mount 12kg, Wall mount 22kg
Rudder -- green
Illumination : Internal light provided
(Can be turned on or off using LIGHT switch.)

GS80B12R07E
2007.08 1st （YDK）
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Paint color : Munsell No. Effect of magnetic field :
Recorder : Front door frame Effect of variation of AC (50Hz/60Hz) or DC 400 A/m magnetic
(LAMP BLACK 10B3.6/0.3) field
Bezel : Selectable by following Measurement ・・・± (0.1 % of rdg 10digit) or less
0.8Y2.5/0.4 (LAMP BLACK) Recording・・・・± 0.5 % of the recording span or less
2.5G7/2 Effect of signal source resistance :
7.5BG7/2 Effect of signal source resistance variation of +1kΩ
- Power supply section Range of 200 mV or less・・・Within ±10 µV
Rated power supply voltage : Range of 2V or more・・・・・・±0.1 % of rdg
100AC to 240V AC Effect of mounting position :
(automatic voltage range selection AC model) Effect of variation of up to 30° the rear
24V DC (DC model) Measurement ・・・ ±(0.1% of rdg + 1digit)or less
Usable power supply voltage : Recording ・・・・・・ Indication fluctuation + ±0.1% of the
90V AC to 132V AC, 180V AC to 264V AC (AC model) recoding span or less
21.6V to 26.4V DC (DC model) Effect of vibration:
Rated power frequency : 50Hz/60Hz, Switching unnecessary Effect when a sinusoidal vibration along all three axis at a
(Not applicable DC model) frequency between 10 to 60 Hz and an
Power consumption: acceleration of 0.2 m/s2 is applied for 2 hours
For power supply of 100V AC : Approx 17VA (55VA max.) Measurement ・・・ ±(0.1% of rdg + 1digit) or less
For power supply of 240V AC : Approx 25VA (55VA max.) Recording ・・・・・・ Indication fluctuation + ±0.1 % of the
For power supply of 24V DC : Approx 70VA (Maximum) recording span or less
- Misc
- Normal operation conditions
Clock : With a calendar function
Power supply voltage :
Accuracy of clock : ±100 ppm, excluding a delay (of 1
90V AC to 132 V AC, 180V AC to 264V AC (AC model)
second, maximum) caused each time the power is
21.6V DC to 26.4V DC (DC model)
turned on.
Power frequency :
Key lock function : Password for releasing the key lock can be
50Hz ± 2%, 60Hz ± 2% (Not applicable DC model)
set.
Ambient temperature : 0℃ to 50℃
Internal light : Lights up the recording area of the chart paper.
Ambient humidity : 20% to 80% (at 5℃ to 40℃)
Uses a dedicated LED.
Vibration : 10Hz to 60 Hz 0.2 m/s2 or less
Memory backup : A built-in lithium battery backs up the setup
Magnetic field : 400A/m or less (DC and 50Hz/60Hz)
parameters and runs the clock.
Noise : Normal mode (50/60Hz)
Battery life: approximately 10 years.
The Peak value including signal must be less than
When the battery runs down, an indication appears on the front
1.2 times the rated value of the range
of the instrument.
Common mode (50/60Hz)
250VACrms or less for all ranges - Transportation and storage conditions
Warm-up time : Ambient temperature: -25℃ to +60℃
At last 30 minutes after power on Ambient Humidity : 5% to 95% RH (no condensation)
- Effect of operation conditions Vibration : 10Hz to 60Hz、4.9m/s2
Effect of ambient temperature :
With temperature variation of 10℃:
Measurement ・・・ ±(0.1 % of rdg + digit) or less
Recording・・・・・・Measurement fluctuation + ±0.2 % of
the recording span or less
Effect of power supply voltage :
Effect of variation in rated power supply voltage (Over the
range 90V AC to 132V AC or 180V AC to 264V AC for the
AC model)
Measurement ・・・ ± 1 digit or less
Recording ・・・・・・ ± 0.1% of the recording span or less
Effect of frequency :
Effect of frequency variation of ±2 Hz from rated power
frequency ( power supply voltage 90 to 132, 180 to 264V
AC)
Measurement ・・・ ±(0.1% of rdg + 1digit) or less
Recording ・・・・・・ same as measurement fluctuation

Yokogawa Denshikiki Co.,Ltd. GS80B12R07E 1st 2007-08

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Type No. Suffix code MKR181A-W (Wall mount type)
M D MKR181A

MA 22.0 k

374 270
2- 12 HOLE 274 1 28 242
4

TERMINAL BOARD
NP

12
CABLE INLET(20 x 80)

TERMINAL CONNECTIONS

POWER SUPPLY

QUADRANT

HEADING

RUDDER ANGLE

10B3.6/0.3
Recorder
(Light charcoal gray)
Bezel 0.8Y2.5/0.4
Color (Lamp Black)
(Munsell NO.)
2.5G7/2

7.5BG7/2

Printing Example

Outline
MKR181A-F (Flash mount type)
Quadrant Heading Rudder
205 1
430
1
205
205 1

386
205 1

Yokogawa Denshikiki Co.,Ltd. Subject to alternation to technical developments without notice GS80B12R07E 1st 2007-08