Ulvac GP-2001G User manual

No.SK00-7105-EI-003-03
MODEL GP-2001G, GP-2002G
PIRANI VACUUM GAUGE
INSTRUCTION MANUAL
This manual is applicable to the following gauges:
Model Serial No.
GP-2001G 0001G and higher
GP-2002G
0001G and higher
Components Division,
ULVAC, Inc.
2500 Hagisono, Chigasaki City, Kanagawa-ken, Japan
http://www.ulvac.co.jp/
Read this manual before operation and keep it
at your hand for immediate reference.

－I －
Prior to Use
Thank you for purchasing this ULVAC product.
Upon receipt of the product, verify that is the correct model ordered and that it has not been damaged during
transport.
Read this instruction manual before installing, operating, inspecting, or
maintaining the product and fully understand the safety precautions,
specifications and operating procedures regarding the product.
The copyright of this instruction manual is held by ULVAC, Inc.
You are prohibited from copying any portion of this instruction manual without
the consent of ULVAC Inc.
You are also prohibited from disclosing or transferring this instruction manual to
third parties without the express written consent of ULVAC Inc.
The contents described in this instruction manual are subject to change without
prior notice because of changes in specifications or because of product
improvements.
Safety Symbols
Safety symbols are used throughout this instruction manual to call the
operator's attention to safety. The terminology used in safety symbols is
classified below.
Indicate status of urgency of danger when failure to comply with DANGER
results in serious personal injury or death
The work ignoring this warning will lead to serious damage to human life or
factory facility (including this equipment) at a high probability.
Indicate status of danger when failure to comply with WARNING results in
serious worker’s injury or death.
The work ignoring this warning will cause possibility leading to serious
damage to human life or factory facility (including this equipment)
Indicate status of danger when failure to comply with WARNING results in
minor injury or moderate damage.
The work ignoring this warning will cause possibility leading to minor damage
to worker or breakage to equipment or necessary to adjust.
Direct hazard is not existed, describe the necessity to know
from the viewpoint of worker’s safety or correct and safe operation of
equipment
✔Note

－II －
Safety Cautions
For safe use of this vacuum gauge, carefully read this manual and comply with the warnings and cautions
given in the manual.
Turn OFF power.
If the vacuum gauge fails, immediately turn OFF the power.
Use of a failed gauge may cause fire or electric shock. For repair, contact your
local ULVAC representative or ULVAC JAPAN.
Turn OFF power.
If the vacuum gauge gets unusually hot or gives off smoke or unusual smell,
immediately turn OFF the power. Otherwise, fire can result. For safety,
contact your local ULVAC representative or ULVAC JAPAN.
Turn OFF power.
Before touching any terminal on the control rear panel or if there is a possibility
of touching it, turn OFF the vacuum gauge power.
Turn OFF power.
Whenever mounting the gauge, unplug the power cable.
Check line voltage.
Prior to turning ON the power, make sure that the vacuum gauge operating
voltage and the supply voltage are in agreement. Connection of incorrect power
can cause damage to the vacuum gauge and fire.
Operating environment
Do not connect the sensor head to a test object of which pressure is in excess of
atmospheric pressure. If the pressure in the sensor head exceeds atmospheric
pressure, the sensor head will be damaged or it will pop out from the connector,
causing injury to the surrounding, including human body. If the pressure
exceeds atmospheric pressure, provide an isolation valve so that the pressure in
the sensor head does not exceed atmospheric pressure.
Don't disassemble.
Do not try to disassemble the vacuum gauge (controller, measuring unit, sensor
head cable and sensor head).
Don't modify.
Do not modify the vacuum gauge (controller, measuring unit, sensor head cable
and sensor head). If it is modified, its functions are not warranted. Also fire
or electric shock may result.
Check connection.
For safety reasons, ground the GND terminal of the controller.
Operating environment
Do not use the gauge in a place where it may be splashed with water. If it is
splashed with water, failure, earth leakage or fire can result.
Ventilation
Do not plug the air vents of the vacuum gauge controller. If the air vents are
plugged, heat will be contained inside and the gauge may be damaged. The
gauge will not indicate normal values either.
Keep out foreign matter.
If foreign matter like metal fragments or combustibles are admitted into the
vacuum gauge through the air vents or other openings, remove them. Otherwise,
the vacuum gauge may be damaged.
Operating conditions
Operate the vacuum gauge under the environment set forth in the specifications.
Beware of impact
Do not give an impact to the sensor head.

－III －
Repacking for transfer
If the vacuum gauge is to be shipped to other site, repack it in the same way as
on delivery. If the vacuum gauge is shipped bare, it may be damaged.
Discarding
When discarding the vacuum gauge, comply with your local regulations.
Please note that any product supplied by our company can be disused only at the
customer’s responsibility and expense. And, the product in the meaning of this
passage includes its appurtenances, annexed documents and / or media, etc.
attached to, as well as the product in itself.
Especially, a sensor head used in an atmosphere that can cause hazards to the
human body must be disposed of by a specialist in disposal.
Maintenance
The electrical circuitry inside this unit uses aluminum electrolytic capacitors. In
general, aluminum electrolytic capacitor
s possess an operating life and that
operating life decreases the more the ambient temperature increases. To prevent
damage to the device, we recommend maintenance at ULVAC about once every
three years.
Lifetime of the parts (Connector-area)
In the connector-area such as a sensor head cable or GP-H, there is a life time.
When a life time comes, displays are showing error or right pressure does not
show. Even at the low number of plug-in and out, when a load at the inclination
comes also the lifetime comes.
✔Note
✔Note

－IV －
Revision History
DATE No. Reason
Mar. 23, 2007 00 S/N:00001～ first version
Oct. 31, 2013 01 ・Changed description of safety symbol.
・Section 1.1, Changed accuracy description.
・Section 1.1 and 1.2, Changes to accessories and options.
・Section 1.2, WP-04 and WP-05 were discontinued.
・Section 2.2.5, Added sensor head installation method to GP-H.
・Section 4.1, Changed the overall operation diagram.
・Chapter 6, Change fuse specification.
・Chapter 7, Change warranty.
・Chapter 8, Added certificate of Decontamination.
Nov. 19, 2014 02 ・Added a note that the connector part has a limited life as a safety
precaution.
・Detailed option details.
・Corrected an error.
Dec. 2, 2019 03 ・Section 1.1, Added inrush current.
・Section 1.2, Do not attach instruction manuals from standard
accessories.
・Section 1.3.5, Added option.
・Corrected an error.

－V －
Table of Contents
PRIOR TO USE............................................................................................................................................................................. Ⅰ
SAFETY SYMBOLS..................................................................................................................................................................... Ⅰ
SAFETY CAUTIONS................................................................................................................................................................... Ⅱ
REVISION HISTORY.................................................................................................................................................................. Ⅳ
1. GENERAL DESCRIPTION ............................................................................................................................................... 1
1.1. SPECIFICATIONS .............................................................................................................................................................. 1
1.2. STANDARD ACCESSORIES............................................................................................................................................... 1
1.3. OPTION ............................................................................................................................................................................. 2
1.3.1. Sensor head............................................................................................................................................................... 2
1.3.2. Measuring unit......................................................................................................................................................... 2
1.3.3. Sensor head cable.................................................................................................................................................... 2
1.3.4. Supply cable 3m（only GP-2001G）.................................................................................................................. 2
1.3.5. Others.......................................................................................................................................................................... 2
1.4. DESCRIPTION OF COMPONENTS................................................................................................................................... 3
1.4.1. Front panel................................................................................................................................................................ 3
1.4.2. Rear Panel .................................................................................................................................................................4
2. INSTALLING THE PIRANI VACUUM GAUGE ...................................................................................................... 5
2.1. PRELIMINARY OPERATION ............................................................................................................................................ 5
2.2. INSTALLATION .................................................................................................................................................................5
2.2.1. Installing the controller.......................................................................................................................................... 5
2.2.2. Installing the sensor head..................................................................................................................................... 6
2.2.3. Installing the supply cable .................................................................................................................................... 7
2.2.4. Electrical connection................................................................................................................................................ 7
2.2.5. A sensor head installation method to GP-H................................................................................................... 9
3. OPERATING PROCEDURE ...........................................................................................................................................10
3.1. CAUTIONS IN HANDLING.............................................................................................................................................10
4. OPERATING PROCEDURE ...........................................................................................................................................11
4.1. SUMMARY OF THE OPERATION METHOD ..................................................................................................................11
4.2. SELECTING THE RECORDER OUTPUT .......................................................................................................................12
4.3. SELECTING THE UNIT OF PRESSURE ........................................................................................................................12
4.4. DISPLAY AND CHANGE OF SETPOINT COMPARISON VALUE ................................................................................12
4.5. ADJUSTING THE RECORDER OUTPUT .......................................................................................................................13
4.6. RECORDER OUTPUT......................................................................................................................................................14
4.7. SETPOINT OUTPUT .......................................................................................................................................................16
4.8. ZERO RESETTING FUNCTION......................................................................................................................................16
5. APPENDIX ............................................................................................................................................................................17
5.1. PRINCIPLES OF OPERATION ........................................................................................................................................17
5.2. TYPES OF GAS MEASURED AND INDICATION ..........................................................................................................18
5.3. CHANGE OF INDICATION WITH AMBIENT TEMPERATURE ....................................................................................20
6. TROUBLESHOOTING......................................................................................................................................................21
7. WARRANTY..........................................................................................................................................................................23
8. CHINA ROHS DECLARATION ....................................................................................................................................24
9. CERTIFICATE OF DECONTAMINATION...............................................................................................................25
10. RELATED DRAWINGS ...............................................................................................................................................26

1
1. GENERAL DESCRIPTION
The Model GP-200□G is a constant temperature type Pirani Vacuum gauge utilizing the thermal
conduction of gas. The controller and measuring unit being separated from each other, measurement is
less affected by the difference in the sensor head cable length. (No readjustment is requires when the
cable length is changed.)
The display is a large‐sized 7-segment digital indicator (red LED) that can be easily read.
The DIN size has been employed and the weight has been reduced considerably from that of the
predecessor models.
M3 terminal block is employed for easy connection with an external control system.
Pressure comparison values can be set at three places. The comparator output is delivered as transistor
output (open collector).
Power voltage of Pirani Vacuum Gauge Model: GP-2001G and GP-2002G are specified below.
GP-2001G：AC 85～264 V 50/60 Hz
GP-2002G：DC 24 V
Specifications
Name
Pirani vacuum gauge
Measurable pressure range
0.4 to 3000 Pa
Measuring point
1 point
Display
7-segment digital Indicator (red LED)
0.0
～
3000.0 Pa
Display sampling time
100 msec
Measurement accuracy
4.0
×
10-1 Pa
～
1.0
×
10+1 Pa :
±
50%
1.0×10+1 Pa ～5.1×10+1 Pa : ±30%
5.1×10+1 Pa ～7.6×10+2 Pa : ±15%
7.6×10+2 Pa ～1.0×10+3 Pa : ±30%
1.0
×
10
+3
Pa
～
2.7
×
10
+3
Pa :
±
50%
Recorder output signal
-1.5 to 11.5 VDC (maximum recorder output range)
①Lin 0 output 0 to 10 V: 0 to 3000 Pa
②Lin 1 output 0 to 10 V: 0 to 1000 Pa
③
Lin 2 output 0 to 10 V: 0 to 100 Pa
Zero correction input
No-voltage contact input
Input current : 10mA
Setpoint output
3 points Transistor output (open collector)
Rated load voltage : 24 VDC
Max. Load current : 50 mA (saturation voltage:1V)
Interchangeability of sensor head
Within ± 3% at the filament resistance value (same type of sensor
head)
Operating tempreature range
10
℃
to 40
℃
Power requirements
GP-2001G
：
AC 85
～
264 V
50/60 Hz
GP-2002G
：
DC 24 V ± 10%
Power consumption
10 VA
Inrush Current AC100V: 20A or less / 2ms or less
AC200V: 8A or less / 2ms or less
Outside dimensions
48H×96W×151D(mm)
Weight
0.4 kg
Standard accessories
Quick manual
Paper
1 copy

2
Option
1.3.1. Sensor head
Sensor head
WP-01/WP-03/WP-03/WP-16
WPB-10-034
Filament material
Pt
Pt
Other materials
BS/Ni-plating
Ni
、
Kovar
、
Glass
、
SnSbCu
SUS304
、
Cu(Gasket)
FeNiCo(Ni-plating)
、
Al2O3
Permitted leak ratio
1
×
10-8Pa
･
m3/s max
1
×
10-8Pa
･
m3/s max
Weight(g)
WP-01
：
about 26
、
WP-02
：
about 45
WP-03
：
about 63
、
WP-16
：
about 77
about 173
Internal volume(cm3)
WP-01
：
about 19
、
WP-02
：
about 17
WP-03
：
about 17
、
WP-16
：
about 22
about 18
Pressure max
※
1
< 2
×
10+5Pa(abs)
< 2
×
10+5Pa(abs)
Bakeout
※
2
80
℃
max
250
℃
max
※1:The breakdown pressure of the flange and clamp are to be considered otherwise.
※2:Bakeout temperature is a temperature of the sensor unit. Please remove the electronics(GP-H) or the
conversion cable(GP-BH).
※3:WP-04 andWP-05 discontinued producing in August, 2012.
1.3.2. Measuring unit
Measuring unit
GP-H
GP-BH
（
Conversion cable 2m
）
Sensor head
WP-01
、
WP-02
WP-03
、
WP-16
WPB-10-034
Weight 35g
GP-BH: 0.13kg
Conversion calbe: 0.2kg
remarks
GP-H for WP-01/WP-02 and
WP-03/WP-16 are different.
1.3.3. Sensor head cable
Sensor head cable
2
、
5
、
10
、
15
、
20
、
30
、
50
、
100m
Weight(kg)
0.2/0.4/0.7/1.0/1.3/1.9/3.9/7.7
1.3.4. Supply cable 3m（only GP-2001G）
※The plug specification of supply cable is AC125V / 7A.
1.3.5. Others
JCSS calibration certificate
Only combination with sensor unit
General proofreading test
Only combination with sensor unit
Inspection certificate
Calibration certificate
This gauge is based on the measurement of thermal conductance and the
indicated value may change depending on the type of the sensor head. Some
sensor heads may require change of the circuitry or structure of the measuring
unit. Therefore, if the type of the sensor head is changed after delivery of the
gauge, re-
adjustment will be required. Factory adjusted conditions (type of
sensor head) are inscribed on the measuring unit GP-H. Check them before
operation.

3
Description of Components
1.4.1. Front panel
2.SETPOINT OUTPUT ACTION DISPLAY
DATA
ALM
GP-200□
kPa
Pa
SP1 SP2 SP3
SET
ZERO
5. DISPLAY OF UNIT OF PRESSURE
1. OPERATING SWITCH
3. PV INDICATOR 4. SV INDICATOR
Fig. 1-1 Front Panel of GP-200□G
(1) Operation switch
ALM Used to display and change the comparison set value (setpoint)
ZERO Used to set and cancel the zero point correction function
DATA Used to change data
▼
Used to shift the decimal place of data when changing data.
▲Used to change data
SET Used to finalize data,etc.
Refer to section 4 for the operating procedure.
(2) Comparison (setpoint) output action display
The green LED comes on when the comparison output is ON.
(3) PV indicator
Main indicator that displays the comparison set value and set value for output adjustment, in
addition to the current measurement value. If the measurement value exceeds the scale limit or if the
sensor head filament has blown out, “------“ will blink on the display.
(4) SV indicator
An auxiliary indicator that explains the contents of the PV indicator. Nothing is displayed or in
normal measuring condition.”OFF” is displayed when the comparison set value is displayed or in
the output adjustment setting.
(5) Display of unit of pressure
The LED for the selected unit of pressure comes on.