Azbil C6097A User manual

1
CP-UM-6001E
Pressure Switch
Model C6097A
User’s Manual
Thank you for purchasing an Azbil Corporation product.
This manual contains information for ensuring the correct use
of this product.
This manual should be read by those who design and main-
tain equipment that uses this product.
Be sure to keep this manual nearby for handy reference.
Please read “Terms and Conditions”from the following URL
before ordering and use.
https://www.azbil.com/products/factory/order.html
NOTICE
Be sure that the user receives this manual before the product is used.
Copying or duplicating this user’s manual in part or in whole is
forbidden. The information and specifications in this manual are
subject to change without notice.
Considerable effort has been made to ensure that this manual is
free from inaccuracies and omissions. If you should find an error or
omission, please contact the azbil Group.
In no event is Azbil Corporation liable to anyone for any indirect,
special or consequential damages as a result of using this product.
© 2022 Azbil Corporation. All Rights Reserved.
SAFETY PRECAUTIONS
Safety precautions are for ensuring safe and correct use of
this product, and for preventing injury to the operator and
other people or damage to property. You must observe these
safety precautions. Also, be sure to read and understand the
contents of this user’s manual.
zKey to symbols
WARNING
Warnings are indicated when mishandling this product
might result in death or serious injury to the user.
CAUTION
Cautions are indicated when mishandling this product
might result in minor injury to the user, or only physi-
cal damage to this product.
WARNING
This device is equipped with functions that are ex-
tremely important for the safe operation of combustion
equipment.
Before removing, mounting, or wiring the C6097A, be
sure to turn off the power to the C6097A and all con-
nected devices. Failure to do so might cause electric
shock.
Do not disassemble this device. Doing so could result in
faulty operation, damage, or electric shock.
CAUTION
The installation, wiring, adjustment, inspection, and
maintenance of this device should be carried out only
by a trained and experienced technician who has knowl-
edge and technical skills related to combustion equip-
ment and flame safeguard control equipment.
Do not use this device for any fluid other than natural
gas, liquefied petroleum gas and air. If it is used for some
other gas, the switching function may be degraded due
to corrosion of metal or deterioration of rubber.
To prepare for device failure or if an unsafe situation
might occur, consider having a fail-safe design for the
equipment as a whole, or use a redundant design. In the
event that this device fails, the ON/OFF status of its elec-
trical output may continue.
If the diaphragm is somehow damaged while this switch
is being used with a combustible gas, gas will leak from
the low-pressure port but the leakage will be limited by
the 0.8 mm internal orifice. Depending on the ventilation
in the installation location, it is recommended for safety’s
sake to connect an exhaust pipe to the low-pressure port
to vent gas to a safe place.
CONVENTIONS USED IN THIS MANUAL
The following conventions are used in this manual:
Handling Precautions:
Handling Precautions indicate items that the user should pay
attention to when handling the C6097A.
(1), (2), (3):
Numbers within parentheses indicate steps in a sequence or
parts of an explanation.
OVERVIEW
The C6097A can be used to detect the pressure of natural gas, LP
gas, and air.
This switch has a wide range of uses, such as detecting the upper or
lower limit pressure of gas or air being supplied to a gas burner, or
burner blower interlock, or a clogged filter.
Features
• Lightweight and compact.
• Can be installed either vertically or horizontally. For details,
“Installation orientation”in the“SPECIFICATIONS” section
on page 3.
• Can be used for differential and negative pressures (air only).
• Easy pressure setting and transparent cover for easy viewing
• This product conforms to CE standards. (EN1854,
EN60730-2-6)

2
MOUNTING/WIRING
WARNING
Before removing, mounting, or wiring the C6097A, be sure
to turn off the power to the C6097A and all connected de-
vices. Failure to do so might cause electric shock.
When installing this switch in a vertical direction, put the
plug in the bottom port. Using this switch with the bot-
tom port open causes gas to leak, resulting in a hazardous
situation.
CAUTION
Do not install in places such as the following. Doing so
could cause malfunction or device failure.
•
Certain chemicals or corrosive gases.
•
High temperatures.
•
Splashing water or excessive humidity.
•
Prolonged vibration.
Depending on the ventilation in the installation location,
when this switch is used with a combustible gas, it is rec-
ommended for safety’s sake to connect an exhaust pipe
to the low-pressure port to vent gas to a safe place. If the
diaphragm is somehow damaged, gas will leak from the
low-pressure port but the leakage will be limited by the
internal orifice.
Do not connect a combustible gas to the low-pressure
port.
Differential pressure detection is available for air only. It
can not be used for combustible gases such as natural gas.
Mounting
This switch can be installed with the dial indicator positioned
horizontally or vertically.
(1) Select a horizontal or vertical orientation for installation.
Plug
Piping
Exhaust pipe
Exhaust
pipe
Plug
Piping
Horizontal installation Vertical installation
(2) Install piping while holding the two parallel sides of the Rp 1/4
high-pressure port with a spanner or wrench. High-pressure
ports are located on the side and bottom. To use the side high-
pressure port, move the plug to the bottom high-pressure port.
After attaching the plug, make sure that there is no leak.
Handling Precautions
• Use of too much sealant or presence of foreign matter in
the piping may cause clogging.
(3) When you use this switch with a combustible gas, connect an
exhaust pipe to the Rp 1/8 low-pressure port.
Wiring
Remove the transparent cover, select the appropriate terminals
according to the terminal connection diagram, and connect wir-
ing to them.
C6097A
NO
2
1
3
NC
COM
For a pressure rise:
Terminals 3–1 open
Terminals 3–2 closed
For a pressure drop:
Terminals 3–1 closed
Terminals 3–2 open
Loads
Voltage
Ground
SETTING/INSPECTION
Pressure setting
Note: The graduations on the setting dial should be used only as
a guideline. Be sure to use a pressure gauge to check the
switch operation.
zSetting
Turn the dial until the dial indicator (white mark) points to
the desired setting value.
The on-off differential (fixed) occurs below the pressure set
point.
3COM
NO
2
1 NC
Dial indicator
On-off differential
(fixed)
Pressure lower
Terminals 3–1 closed
Terminals 3–2 open
Terminals 3–1 open
Terminals 3–2 closed
Pressure higher
Pressure set point
(variable)
zCheck of the operating point
(1) Remove the plug screw from the monitoring pressure
gauge port and attach a pressure gauge to the port.
(2) Change the pressure to the desired amount and check that
the C6097A switches at this pressure.
(3) After the check, be sure to insert and tighten the plug
screw. Check that there is no leak.
Inspection
When installing, servicing, or replacing the C6097A, check the
following points.
Determine the inspection interval, taking into consideration the
equipment type, installation environment, frequency of use, etc.
zPoints to check
• Pressure set point is correct (dial has not moved).
• Transparent cover is not damaged.
• Exhaust pipe is attached normally.
• No leaks from the gas piping.
• Wiring connections are not loose.
zChecking guidelines
On a daily basis, before and during operation, check the oper-
ating state and make sure that there are no leaks. Periodically,
at least once every six months, check the operating point.

3
INSTALLATION OF OPTIONAL PARTS
Switch operation indicator lamp
An optional switch operation indicator lamp (No. 81404156) to
show the on-off status of the C6097A switch can be installed as
follows.
Unit: mm
Neon lamp
ø7.2 max.
40 max. 85 ± 5
105 ± 5
(1) Connect the short lead to COM terminal 3 on the C6097A
and the long lead to NC terminal 1 or NO terminal 2 on the
C6097A.
(2) Insert the lamp into the square groove in the C6097A case
with the neon lamp facing upward.
(3) Check that the switch operation indicator lamp correctly
indicates the operation of the C6097A switch.
Square groove
in the case
Dial indicator
SPECIFICATIONS
Item Specifications
Model number C6097A0110 C6097A0210 C6097A0310 C6097A0410 C6097A0510
Applicable fluids Natural gas, liquefied petroleum gas, and air
Control action ON/OFF
Setting range Variable: 0.1 to 1 kPa Variable: 0.25 to 5 kPa Variable: 3 to 15 kPa Variable: 10 to 50 kPa Variable: 10 to 70 kPa
On-off differential (nominal value) 40 Pa (fixed) 60 Pa (fixed) 280 Pa (fixed) 700 Pa (fixed) 800 Pa (fixed)
Allowable pressure 20 kPa 30 kPa 50 kPa 150 kPa 150 kPa
Output SPDT contact output
On pressure rise, terminals 3–1 open, terminals 3–2 closed.
Contact rating Resistive load: 250 V AC, 5 A
Inductive load: 250 V AC, 3 A (power factor: 0.6)
Minimum contact operating
current and voltage
50 mA 24 V DC
Insulation resistance 100 MΩ min. between each terminal and non-live metal part with a 500 V DC megger
Dielectric strength 600 V AC, 50/60 Hz for 1 min between terminals with the same polarity; 1500 V AC, 50/60 Hz for 1 min between each
terminal and non-live metal part
Contact resistance Initial 100 mΩ max. (measured by voltage drop method at 6–8 V DC and 1 A)
Diaphragm material Nitrile butadiene rubber (NBR)
Housing material Die-cast aluminum
Case material Polybutylene terephthalate (PBT)
Cover material Polycarbonate
Fluid temperature −15 to +60 °C (without freezing or condensation)
Ambient temperature −15 to +60 °C (without freezing or condensation)
Pressure connection port Low-pressure side: Rp 1/8 (1 port), high-pressure side: Rp 1/4 (selection of side port or bottom port)
Monitoring pressure gauge
connection port
9 ø hose end
Wiring port 22 ø
Wiring terminal M3.5 screw terminal
Installation orientation Vertical, or horizontal with the pressure setting dial facing upwards.
Note: Since vertical installation lowers the operating point, adjust the set point after checking the actual operating point.
Mass 260 g
Protection against electrical shock Class 1
Standard EN1854 (GAR) PIN: 0063AR1571/1
EN60730-2-6 (LVD)
Option accessories
(sold separately)
Switch operation indicator lamp (100/200 V AC)
Model No.: 81404156
Warranty period Azbil Corporation products shall be warranted for one (1) year from the date of your purchase of the said products or the
delivery of the said products to a place designated by you. (In the event that Azbil Corporation product has any failure
attributable to Azbil Corporation during the aforementioned period, Azbil Corporation shall, without charge, deliver
a replacement for the said product to the place where you purchased, or repair the said product and deliver it to the
aforementioned place. Azbil Corporation shall not be liable for any damages, including direct, indirect, special, incidental
or consequential damages in connection with or arising out of Azbil Corporation products.)

4
(10)
1-12-2 Kawana, Fujisawa
Kanagawa 251-8522 Japan
URL: https://www.azbil.com
Specications are subject to change without notice.
1st edition: June 2022 (S)
EXTERNAL DIMENSIONS
Unit: mm
Rp 1/4 high-pressure port
with plug ( use 6 mm hex wrench )*
1
Transparent cover
Polycarbonate
Case
PBT (polybutylene terephthalate)
Wiring port 22ф
9ф
Dial indicator
3.7
68.4
38.4
68.4 69
69
59
86
26.5
10.5
10.5
13
Housing
Die-cast
aluminum
Monitoring pressure
gauge port
M4 plug screw,
length 6
Low-pressure port
Rp 1/8*3
Rp 1/4 high-pressure port
Note: Remove the dust seal before using
3 unthreaded holes for bracket
installation (depth 6.5)*2
R 20
R 32
45
30°
32°
21
61
*1. There are high-pressure ports on the sides and bottom. To use
the side high-pressure port, remove the plug, apply sealing
material, and put it in the bottom port.
*2. Use M4 self-tapping screw or provide the hole with M4 threads
before use.
*3. If this switch is used with a combustible gas, and an exhaust pipe
is connected, it should be connected to the low-pressure port.
Do not connect a combustible gas to the low-pressure port.
CED0039, Revision 06
Page: 2 of 2
Appendix 1
C6097A0110, C6097A0110D, C6097A0112, C6097A0210, C6097A0210D, C6097A0210M,
C6097A0310, C6097A0310D, C6097A0410, C6097A0410D, C6097A0510 and C6097A0510D
Disposal of Electrical and Electronic Equipment
(for Environmental Protection)
This is an industrial product subject to the WEEE Directive.
Do not dispose of electrical and electronic equipment in the
same way as household waste.
Old products contain valuable raw materials and must be
returned to an authorized collection point for correct disposal
or recycling.