RHS SF6 Analyzer 973 User manual
Warranty
RH Systems (RHS) warrants the products it manufactures or distributes to be free of defects
in material and workmanship under normal use and service when operated within the speci-
fied design limitations for a period of 12 months from date of initial shipment. Under this War-
ranty, RHS will, at its discretion, repair or replace any component that upon examination by
RHS or its duly authorized representatives proves to be defective during the warranty period
provided the system is returned to the factory for inspection and repair shipping prepaid. Im-
proper or unauthorized maintenance, storage, repair, or alteration of any kind by personnel
other than RHS or its duly authorized representatives may void all warranties. Warranty may
also be voided for misuse, neglect, accident, corrosion, and improper installation. This War-
ranty is exclusive and in lieu of any and all other warranties of merchantability, fitness for a
particular purpose, or any other warranty, expressed or implied, and all other liabilities and
obligations on the part of RHS. RHS will not be liable for any other claims or damages, either
direct, indirect, or consequential arising out of the use of its products.
Table of Contents
TABLE OF CONTENTS ......................................................................................I
GENERAL ..........................................................................................................1
SHORT DESCRIPTION......................................................................................3
OPERATION.......................................................................................................5
Front Panel.................................................................................................................................5
Back Panel.................................................................................................................................8
INITIAL SETUP ..................................................................................................9
Preparation.................................................................................................................................9
Electrical Connection ................................................................................................................. 9
Connection of the Serial Interface..............................................................................................9
RS 232 – USB Converter / MSCOMM32 Driver Installation....................................................10
SF6Gas Connection ................................................................................................................11
Evacuate the Sampling Tube...................................................................................................12
Evacuation of the Internal Storage Tank .................................................................................13
SF6Gas Connection to the Compartment ...............................................................................14
MEASUREMENT..............................................................................................15
Measurement Start...................................................................................................................15
Termination of Measurement...................................................................................................16
Measuring Range Limitations ..................................................................................................17
Alarm Messages ......................................................................................................................17
Measurement Aborted .............................................................................................................17
Measurement of Nitrogen (N2).................................................................................................18
Data Collection over RS 232 with Protocol.............................................................................. 19
MEASUREMENT OPTIONS.............................................................................21
Navigating the Menus..............................................................................................................21
SO2MODULE...................................................................................................23
SO2Module..............................................................................................................................23
TEST FUNCTIONS...........................................................................................25
Ice Test ....................................................................................................................................25
973-SF6 E V1.5 RHS i
ADDITIONAL FUNCTIONS..............................................................................29
Selection of the Indicated Parameters.....................................................................................29
Selection of Units..................................................................................................................... 30
Changing Color........................................................................................................................31
Storage of the Actual Settings .................................................................................................32
Restore Color Settings and Baud Rate.................................................................................... 33
MAINTENANCE ...............................................................................................35
Touch Screen Calibration ........................................................................................................ 35
Mirror Cleaning.........................................................................................................................36
Exterior Cleaning......................................................................................................................37
SPECIFICATIONS............................................................................................39
ii 973-SF6 E V1.5 RHS
General
This manual explains the function of the SF6Analyzers 973, Version 973-SF6. In this manual the
instrument will be called 973.
Vol SF6 % All descriptions in bold and italic are related to the text on the front
panel, the display and the back panel of the 973.
If you wish to use the instrument as quickly as possible, we recommend reading the chapters
Initial Setup (page 9) and Measurement (page 15). Standard use of the instrument is ex-
plained in these two chapters.
973-SF6 E V1.5 RHS 1
Short Description
Reliable SF6Measurement
The 973 was specifically designed for measurement of Humidity and SF6Purity in gas insulated
switchgear systems. Humidity Measurement data is displayed in ppmv, ppmwand Dew/Frost
Point. Purity Measurement is displayed directly in % Volume SF6. Both the Humidity and Purity
measurements utilize accurate and reliable condensation techniques.
Gas Recovery and Pressure Measurement
The 973 is equipped with a gas recovery system that stores the sampled gas during the meas-
urement process in its internal storage tank. After completion of the measurement, the stored
gas is automatically pumped back into the original compartment or into another vessel. The
compartment pressure is also measured.
Easy, Automated Measurement
The 973 is equipped with a user configurable full color active matrix LCD with integrated touch
screen. The 973 may be configured for measurement of Humidity and % Volume SF6with either
automatic or manually initiated Pump Back. In addition the 973 measures the pressure of the
connected gas compartment. Using the bi-directional RS 232 communications port, all meas-
urement data may be easily transferred into a computer.
Calibration
Easily check the calibration at any time using the built-in Ice Test function, providing instant
proof of system accuracy and integrity.
Connect and Go
The system is supplied ready for immediate use.
973-SF6with Standard Accessories
Transport Case
6m Stainless Steel armored PTFE tubing
DILO coupling DN20 and DN8
3 m RS 232 cable incl. USB adapter with USB cable
3 m power cable
Operation Manual
CD-ROM
973-SF6 E V1.5 RHS 3
Operation
Front Panel
SF Analyzer 973
6
Status of Measurement
Internal
Tank Capacity
Menu Keys
Fixed Function Keys
Data Lines
Measuring Head
Keypad
Touch Screen
7
enter
.
2
0
1
54
98
6
3
exp
+/
LCD Display with Touch Panel
The 973 utilizes a full color active matrix liquid crystal display with an integral touch panel. It has
a high contrast ratio and a wide viewing angle for easy readability. Data is displayed in large
easy to read fonts. Using the on screen function and menu keys, you can easily configure each
line of the display and navigate the menus.
973-SF6 E V1.5 RHS 5
Data Lines
The first four lines of the display are for numeric or graphic representation of the measured data.
We refer to those first four lines as Data Lines. Numeric data lines contain the value to the left,
with the parameter description and units to the right. The displayed parameters and units can be
changed, but after a restart of the instrument the values will be reset to the stored standard con-
figuration.
1. Data Line
This line displays the measured Dew/Frost Point.
The unit is °C related to atmospheric pressure.
2. Data Line
This line displays the humidity content in ppmw
(parts per million weight). This unit is pressure in-
dependent.
3. Data Line
This line displays the SF6purity in % Volume.
4. Data Line
This line indicates the current pressure of the gas
compartment. The unit is kilo pascal absolute pres-
sure.
5.200
-35.6
99.8
650.5
Frost Point
°C (at atm. P)
Weight Ratio
ppmw SF6
Volume SF6
%
Vessel Pressure
kPa abs.
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
The data lines indicating the measured Humidity as well as the % Volume SF6will only be dis-
played after completion of the measurement. During the measurement only the current gas
pressure of the measured compartment is indicated.
Fixed Function Keys and Status Line
The bottom line of the display contains two fixed
function keys. By pressing the Start button the
measuring process will be started. With the Pump
button the pump back of the stored gas in the inter-
nal tank can be activated manually. These function
keys are not changeable and are always available.
Additionally this line contains the status indication,
which indicates the current operation mode. The
level indicator of the internal tank indicates the cur-
rent storage capacity.
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
Menu Keys
To the right side of the display is a column of menu
keys. Each of these keys changes function as nee-
ded.
Notice that the bottom key in this column is different
from the rest. The bottom key is used to cycle the
upper keys through the various menu options. The
text on the bottom key changes to indicate the cur-
rently selected menu option. The text of the upper
keys change based on the functions available in the
menu.
Use the
bottom
key to
change
menus.
6 973-SF6 E V1.5 RHS
Keypad
The keypad is used for entering data into the 973.
For normal operation it is rarely used.
Carrying Handle
To adjust the position of the carrying handles press
the buttons on both sides to unlock the handle. Re-
lease the buttons when the desired position is
found.
973-SF6 E V1.5 RHS 7
Back Panel
I
O
RS 232
SAMPLE
GAS
RS 232
Serial
Interface
Power Socket
with Main Switch
Fan Gas Inlet
Quick Coupling
Power Connection
The mains power cord is connected to the power plug on the instrument back panel. The power
socket also includes the power switch. The power supply voltage is 100-120VAC/200-240VAC
at 50 to 60Hz. The power supply is internally fused and will automatically be switched off in case
of an overload. To restart the power supply the instrument main switch must be switched to 0
and Iagain.
Gas Inlet Quick Coupling
The sampling line is connected to the sample gas inlet. If the instrument is not in use the inlet
should be protected with the blue cover.
RS 232 Serial Interface Connector
The RS 232 connector is used when connecting the 973 to a computer. Use a 9 pin 1:1 cable to
connect the 973 to a desktop or laptop computer. This cable has a male connector on one end
and a female connector on the other end. It is most often referred to as a serial extension cable.
Fan
When the 973 is switched on the cooling fan is always running independent of the ambient and
the instrument temperature.
8 973-SF6 E V1.5 RHS
Initial Setup
Preparation
The 973 needs a source of normal AC power. The label on the back panel indicates the mains
voltage. The instrument has been designed to work with a power range between 100-120VAC/
200-240VAC at 50 to 60Hz. This normally covers all usual mains voltages..
Electrical Connection
The power socket and the 973 main power switch are on the
back panel of the instrument. Use the provided power cable
to connect the instrument to the mains power.
By pressing the power switch the instrument is started. The
display of the 973 comes up immediately following the proc-
essor’s boot phase. The boot phase may take several sec-
onds to complete.
Connection of the Serial Interface
If you intend to transfer the measured data via the serial
interface to a computer, the provided serial cable must be
connected to the RS 232 port on the 973 and to the serial
interface of the computer.
If your computer is equipped with a USB interface, you can
use the provided RS 232/USB converter. You will find the
drivers on the CD The installation will be explained in the
following chapter.
973-SF6 E V1.5 RHS 9
RS 232 – USB Converter / MSCOMM32 Driver Installation
On the CD-ROM 973-SF6you will find the drivers
for the Keyspan RS 232 / USB Adapter.
Double click on:
KeyspanUSA19hsWinV34.exe
and follow the installations instructions. The pro-
gram is stored (default) in the folder
C:\Program\Keyspan\USB Serial Adapter.
After the installation (default) you will find in the
folder C:\Program\Keyspan\USB Serial Adapter
the assistant for the Keyspan RS 232 / USB
Adapter.
Double click on:
K19hasst.exe
COM Port Number 4
In the Adapter Status tab,the assistant will show
you which COM Port the USB Adapter will use. You
will need this COM Port number later since it will
need to be entered into the Excel Protocol in the
cell Read Data From COM.
KeyspanUSA19HforWindowsv34.pdf
After the installation according to standard (default)
you will find further information in the pdf operating
instructions in the following folder :
C:\Program\Keyspan\USB Serial Adapter\docs
On the CD-ROM 973-SF6in the folder 973INSTALL
you will find the driver MSCOMM32.
Double click on:
Install.bat
and follow the installation instructions. The driver
will be installed and registered.
10 973-SF6 E V1.5 RHS
SF6Gas Connection
The quick coupling on the instrument side of the sampling tu-
be must be connected to the SAMPLE GAS inlet.
Note:
To prevent contamination the blue cover caps of the instru-
ment and sampling tube should always be installed when the
instrument is not in use.
The standard accessories of the 973 include a DN8 and a
DN20 DILO coupling.
The sampling tube must always be stored with an installed
DILO coupling in order to avoid exposure to air. Also protect
the coupling from dust with the yellow screw cover.
After changing the DILO coupling the sampling tube must be
evacuated.
973-SF6 E V1.5 RHS 11
Evacuate the Sampling Tube
The sampling tube must be evacuated before the first initial measurement is started. Once ini-
tially evacuated, there is no need to re-evacuate the hose, even when moving the connection to
the next compartment.
Press the lower right key in order to select the Control Se-
tup menu. Control Setup appears on the key, while on the
upper keys the available menu options are indicated.
Press the key Evacuate Hose.
- - - -
- - - -
- - - -
586.1
Weight Ratio
ppmw
Volume SF6
%
Dew Point
°C (at atm. P)
Vessel Pressure
kPa abs.
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
Measuring
Options
Ice Test
Evacuate
Hose
Evacuate
Internal
Cylinder
Control
Setup
Ok
Connect the Hose to the 973 and ensure
the other end is sealed
Ok
Connect the Hose to the 973 and ensure
the other end is sealed
Make sure that a DILO coupling DN8 or DN20 is properly
installed on the sampling tube, but do not connect the DILO
coupling to anything else at this time. Since the DILO cou-
plings are self-sealing, the sampling tube is sealed.
Ensure that the other end of the sampling tube is properly
connected to the 973.
With the sampling tube correctly connected, press the Ok
key in order to start the evacuation process.
After the evacuation has started the next window indicates
the decreasing pressure of the sampling gas tube while
evacuating.
After reaching the set residual pressure of 20 kPa the
evacuation process is stopped automatically and the window
is closed. The instrument and the sampling tube are now
ready for the measurement.
By pressing the Cancel key during evacuation the process
can be manually stopped.
- - - -
- - - -
- - - -
586.1
Weight Ratio
ppmw
Volume SF6
%
Dew Point
°C (at atm. P)
Vessel Pressure
kPa abs.
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
Measuring
Options
Ice Test
Evacuate
Hose
Evacuate
Internal
Cylinder
Control
Setup
Ok
Connect the Hose to the 973 and ensure
the other end is sealed
Ok
Connect the Hose to the 973 and ensure
the other end is sealed
Cancel
Please wait while the hose is evacuated
below 20 kPa abs.
External Hose Pressure 125.32
12 973-SF6 E V1.5 RHS
Evacuation of the Internal Storage Tank
If the content of the storage tank is unknown or bad SF6gas is in the storage tank, the internal
storage cylinder can be evacuated.
Press the Evacuate Internal Cylinder key in the Control
Setup menu.
The dialogue box requests you to remove the sampling
gas tube or connect a SF6reclaimer to the 973.
Disconnect the quick coupling from the SAMPLE GAS inlet
or connect the instrument to a SF6reclaimer.
Press the Ok button to start the internal tank evacuation.
The dialogue box indicates the current storage tank pres-
sure during evacuation. After evacuating below 20 kPa
residual pressure the internal pump automatically stops.
The evacuation process can be stopped by pressing the
Ok button.
If the 973 is connected to a reclaimer, the evacuation can
be continued with the external reclaimer, until the desired
residual pressure is reached. By pressing the Ok button
the evacuation can be stopped.
167.5
-17.1
93.2
650.5
Weight Ratio
ppmw
Vessel Pressure
kPa abs.
Volume SF6
%
Frost Point
°C (at atm. P)
Pump Internal
Cylinder
Start
Ok
Measuring
Options
Ice Test
Evacuate
Hose
Evacuate
Internal
Cylinder
Control
Setup
Humidity
% Vol SF6
Pump Back
Ok
Disconnect tube from the 973 or connect to
a reclaimer
Ok
Disconnect tube from the 973 or connect to
a reclaimer
167.5
-17.1
93.2
96.96
Weight Ratio
ppmw SF6
Vessel Pressure
kPa abs.
Frost Point
°C (at atm. P)
Volume SF6
%
Internal
Cylinder
Pump
Start
Measuring
Options
Ice Test
Evacuate
Hose
Evacuate
Internal
Cylinder
Control
Setup
Humidity
% Vol SF6
Pump Back
Press Ok when evacuation is complete.
Internal Cylinder Pressure 8.28
Ok
973-SF6 E V1.5 RHS 13
SF6Gas Connection to the Compartment
If the sampling tube was properly evacuated before the first
measurement, it is now ready to connect to the gas com-
partment. When moving the connection from compartment to
compartment, there is no need to re-evacuate.
14 973-SF6 E V1.5 RHS
Measurement
Measurement Start
Before the start of a measurement make sure that the selected parameters of the Excel Protocol
are identical with the parameters of the 973.
As soon as the 973 is connected to the gas compartment
the current vessel pressure is indicated. The SF6standard
configuration for the pressure unit is kPa absolute. The in-
put pressure range is 0.1 – 1MPa abs.
When the instrument is switched on the standard SF6
measuring mode with Humidity Measurement, % Volume
SF6Measurement and Pump Back After Measurement is
activated.
Press the Start button. The Start button and the Pump but-
ton turn green. The pump starts and the humidity clock, lo-
cated next to the Start button, begins to spin. During the
measurement, SF6gas flows from the gas compartment,
through the hose, through the measuring head, and into the
internal storage tank.
After the completion of the Humidity Measurement the
spinning clock stops and the measured Dew/Frost Point as
well as the calculated humidity content in ppmwis
displayed.
Now the % Volume SF6measurement starts and the
corresponding clock begins to spin.
The internal cylinder level indicator shows the rising
pressure in the internal storage tank.
After the completion of the % Volume SF6measurement the
spinning clock stops and the measured % Volume SF6is
displayed.
Now the pump back starts and the corresponding clock be-
gins to spin. The level indicator shows the decreasing
pressure in the internal storage cylinder. At the same time
the mirror is heated. This is indicated by the red Start key.
During the heating phase the Start key is locked.
- - - -
- - - -
- - - -
750.5
Weight Ratio
ppmw SF6
Vessel Pressure
kPa abs.
Dew Point
°C (at atm. P)
Volume SF6
%
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
- - - -
- - - -
- - - -
750.5
Weight Ratio
ppmw SF6
Vessel Pressure
kPa abs.
Dew Point
°C (at atm. P)
Volume SF6
%
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
4.237
750.5
-51.1
- - - -
Weight Ratio
ppmw SF6
Vessel Pressure
kPa abs.
Frost Point
°C (at atm. P)
Volume SF6
%
Internal
Cylinder
Pump
Humidity
% Vol SF6
Pump Back
Start
4.237
-51.1
100.0
750.5
Frost Point
°C (at atm. P)
Weight Ratio
ppmw SF6
Volume SF6
%
Vessel Pressure
kPa abs.
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
973-SF6 E V1.5 RHS 15
4.237
-51.1
100.0
750.5
Frost Point
°C (at atm. P)
Weight Ratio
ppmw SF6
Volume SF6
%
Vessel Pressure
kPa abs.
Pump
Humidity
% Vol SF6
Pump Back Internal
Cylinder
Start
After completion of the pump back into the gas compart-
ment, the measuring head pressure is released to 100 kPa
abs. After stabilization of the gas compartment pressure
display (approx. 5 seconds) the measurement results are
now available on the data lines as well as on the serial in-
terface for a data transfer to the excel protocol (see page
19).
The measurement data for Humidity and % Volume SF6
remain stored and displayed until the next measurement is
started by pressing the Start button. The vessel pressure
measurement always indicates the current pressure at the
973 sample gas input. After completion of the measurement
the gas compartment pressure remains indicated as long as
the sampling tube is connected to the gas compartment.
After connection of the sampling tube to the next gas com-
partment, the next measurement can be started by pressing
the Start button.
Termination of Measurement
After completion of the measurements, disconnect the DILO coupling from the gas compartment
and close it with the yellow screw cover. Then disconnect the quick coupling from the 973 and
cover the gas inlet as well as the coupling of the tube with the blue caps. The last measured SF6
remains in the sampling tube. A correctly closed sampling tube is protected from dust and ambi-
ent air.
If the measurement was stopped with a normal pump back sequence, 200 kPa abs. pressure
(100 kPa gauge) will remain in the internal storage cylinder. The instrument can now be cor-
rectly transported.
16 973-SF6 E V1.5 RHS
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