Cat.No. B13-03

Model PC70
Pressure Controller
OUTLINEAn hydraulic servo valve, an amplifier and a highprecision sensor are built in this pressure controller,
various types of oil pressure based on both the manualand automatic mode can be generated. This pressure
controller is appropriate for research laboratory
application, pressure generation in automatic lines,
calibration of pressure instruments and inspection
equipment.

FEATURES• Six types from 5 MPa to70 MPa are provided.
• Equally divided dividers from 1 to 20 can be set.
• Sweeping and pressure holding time can beselected from 10 types (1.5 seconds to 20 minutes).
• Up to 20 points, an optional point can be set.
• Sweeping and pressure holding time between points
can be set respectively, generating pressures
randomly.
• A repetition up to 99 and infinite times in the automatic• mode can be set. Step sending in the manual modecan be possible.
• Two types of unit changeover can be possible.
• The GP-1B type recorder output terminal is provided.
(Option)SPECIFICATION 1
Medium:General hydraulic oil* If medium is applied to 316st.st. of wetted parts, othermedium can be selected freely
Operating condition:
Under the normal condition, where there is no inflammablegas or liquid which cause the ignition or explosion.
Pressure control range:
1 ~ 5MPah
1 ~ 70MPa
10 ~ 50kgf/cm2
h 10 ~ 700kgf/cm2(Unit changeover type)* NKS can supply another pressure controller
model PC10 for low pressure range, pheumatic type.
Accuracy:±0.2%F.S. (23g±3g)
Minimum set resolution:
0.01MPa or 0.1kgf/cm2
Setting function:
Unit

MPa, kgf/cm2 (Changeover type)

Number of divisions1 ~ 20 (Equal or free point)

Sweep speed

10 kinds of 0 to 9

Retention time

Between 1.2s and 20min, 10 settings are available

Repeat times

As desired between 1 ~ 99

Operation modes:
Manual operation (UP.DOWN.HOLD), Automatic sweep
Kind of display:
Control pressure value, Setting value and operating
monitor, etc.

Outside interface:
GP-IB
Pressure detecting unit material:
316st.st.
Output connection:
R1/4 (PT)Consumption air:
Dry air Approx. 10 L/min (Normal)or less
Operating temperature:
10 ~ 40g
Power source:
200VAC±10% 50/60Hz 1kW
Additional pressure sensor: (Option)
In addition to a standard one range, available to have anotherpressure setting by range changeover. Max. number of range is 4point. (Note: During Operating time, not available to changeover.)
Autocalibration function: (Option)
By combination with exclusive dead-weight tester, autocalibrationof control sensor is available. By this function, periodical calibration
to maintain high accuracy is easily made in the equipment.
Analog output: (Option)
Because the output of analog voltage is equivalent to control
pressure, it's available to be recorded by recorder, etc.
Weight:Approx. 200 kgs
Dimensions:
W750$D800$H1100

SPECIFICATION 2Max. indication:
Controlled pressure range

MPakgf/cm2

Max. indication

1 ~ 5MPa
10 ~ 50kgf/cm2

05.000MPa
50.000kgf/cm2

1 ~ 10MPa
10 ~ 100kgf/cm2

10.000MPa
100.00kgf/cm2

1 ~ 20MPa
10 ~ 200kgf/cm2

20.000MPa
200.00kgf/cm2

3 ~ 35MPa
30 ~ 350kgf/cm2

35.000MPa
350.00kgf/cm2

3 ~ 50MPa
30 ~ 500kgf/cm2

50.000MPa
500.00kgf/cm2

3 ~ 70MPa
30 ~ 700kgf/cm2

70.000MPa
700.00kgf/cm2

Relation of accuracy and pressure range:
Relation of accuracy and pressure range is as follows. For example, in case of selecting 700kgf/cm2 range, accuracy is 100kgf/cm2±1.4kgf/cm2 when generates pressure of 100kgf/cm2. It can generate pressure of 100kgf/cm2 ±0.2kgf/cm2 by building one more
100kgf/cm2 range as option, when required more high accuracy.

CONSTRUCTION AND A PRINCIPLEThis device is composed as shown below. Max. generating pressure is determined by comparison value of diameter of high pressure
cylinder/low pressure cylinder and the pressure which supplied to low pressure side. Pressure sensor signal is input to microcomputer through12bitA/D converter. Microcomputer compares with the setting value which is input from keyboard or GP-IB and controls the control moter. The
adjusting screw which links with the movement of control motor controls the servo valve and pressure generating unit operates by oil pressure
which controlled by servo valve, then generates the pressure at high pressure cylinder side.

Object to be measured

Pressure sensor
P.C

Outputpressure
Liquid medium

Liquidcrystal
display

A/D
GP-IB
Communication unit

High-pressure
cylinderControl motorMLow pressure
cylinder
M.D

C.P.U

Servo valve

ROMRAMKeyboard

P(490)DIMENSIONSLCD display

Pressure gauge
For controlled pressure

LED display

Operation switch
department

Keyboard

(800)

(750)

GP-IB Connector
Pilot lamp forpower source

Outlet of pressure(Rc1/4)(1100)Breaker

Control box(600)

AIR SUPPLY
Cable connector

Front panel:

UP keyAUTO Driving operating monitor
LED lighting

MANUAL Driving operating monitor
LED lighting

Setting point UP

LCD display
Pressure range
Pressure unit
Controlled pressure
Program
Function
TestMode

DOWN key
Setting point DOWNRANGE key

Numbered keyboardPressure range change
Pressure unit change

For set value input

Controlled pressure
indication

Control drive monitor
LED lighting

PC70 PRESSURE CONTROLLER
DATA

Control stop monitor
LED lighting

KEYBOARD

DRIVE MODE

PRESSURE

789UP456DOW
RAN

AUTO
MANUAL

DRIVE
STOP
POWER

EMERGENCY

STOP

1230TES

MAN

STA

FNC

PRO

AUT

SET

NAGANO KEIKI SEISAKUSHO, LTD.

FUNCTION key
Power switch
Stop switch
Dercease pressure to 0 and step

START key
AUTO start

FUNCTION Display

TEST key
TESTDisplay

PROGRAM key
PROGRAM Display

MANUAL key

SET key

MANUAL mode change

Memory of set value

AUTO key
AUTO mode change

Type No. constitution

Please specify Type No., each spcification and range when ordering.
Note: For this Model, there is no applicable item for the figures X, but please specify X when ordering.

Selection spec.

Pressure controller

123

4

5

Additional spec. (Option)
6798

10

1112131415

PC70
Type No.

8 Other additional spec.
0Nil

1Please specify your requirement
Additional pressure sensor
Autocalibration function
Analog output

4 Pressure range (MPa)(When ordering, please specify pressure range & unit.)

12

1 ~ 5, 1 ~ 10, 1 ~ 20, 3 ~ 35
3 ~ 50, 3 ~ 70
15 Document
0Nil

1

Please specify your requirement
Drawing one sheet, Instruction manual,
Inspection procedure, Mill sheet,Test report

OKEII

NAANKGThe contents in the catalogue are subject to change without notice.

malie

Qu

ISO 9001
t y S yst

UEDA FACTORY(JQA-0794)

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PRINTED IN JAPAN '97.3.1000A