Sitron CF12 AC User manual
Contents
03
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Models & Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CF12 Relay Status Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pre-Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Terms & Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
04
Introduction
CF12 AC / CF12 DC
Thermal Dispersion Flow
Switch Monitor
The CF12 series of thermal flow switches is designed to monitor flow status of liquids and
gases and can also be used to detect level.
Achain of 8 LED's gives the user a visual indication of the flow status of the switch. There are
two red LEDs that indicate whether or not the unit has detected flow, a yellow LED to indicate
the set point (for increasing or decreasing flows) and 5 green LEDs that indicate the amount
of flow beyond the set point of the unit. The CF12 also includes a di-chromatic (red/green)
LED which shows the switch point status of the unit.
The sensing element and connection of the CF12 are made with 316 S.S. and can be coated
when necessary . The enclosure is offered in either glass filled nylon or aluminium.
All models can be ordered with a great variety of threaded, flange, or sanitary procces
connections as well as Hallar or epoxy coating for aggressive mediums.
For Hallar coating we recommend that the switches are made with flanged connections or a
minimum of 1” threaded connection.
Simple to install.
Excellent low flow sensitivity.
Available in X-proof version.
No moving parts-maintenance free reliabity.
Can be coated for aggressive mediums.
Maximum working pressure of 1450 PSI (100 bar).
Fast response time for flow or level (Adjustable from 1-10 seconds).
Avaliable in threaded, sanitary and adjustable insertion length connections.
R
Features
05
Models and Dimensions
Threaded Connections
MT - Medium (up to 120ºC)
AT - High temperature (up to 150ºC)
HT - Ultra High temperature (up to 250ºC)
temperature
Other insertion lengths are available upon request
3/4”
1 ½”
1 ½” 1 ½”
2 ½” 2 ½”
1”
½”
2” 2”
1” 1”
1,75
Tri-Clamp Connection Flange Connections
Mounting Options for CF12
Extended Necks for Higher Temperatures
Process Connections
TC Connection
ANSI 150#
ANSI 300#
Rubber Seal
Process Connection
NPT BSP FF
RF
100mm
100mm
100mm
50mm
45mm
35mm
50mm
75mm
12mm
12mm
12mm
3/4” NPT
1” NPT 1” NPT
½” NPT
CF12 w/ insertion
length of 35mm
CF12 w/ insertion
length of 50mm
CF12 w/ insertion
length of 75mm
CF12 for Ultra High temperature w/
minimum insertion length of 100mm
Ultra High temp. neck w/
heat dissipating rings
HT
AT
MT
Insertion Length
Nylon-N1 Aluminum-G2 Aluminum-G3
Aluminum-G1
126mm
130mm
130mm
89mm
76mm
89mm
82mm
80mm
161mm
127mm
Aluminum-GX
06
Wiring Diagram
Standard Connection w/
2 meters of Cable
+
_
Bargraph (B1)
Bargraph (B1)
Adjust (P1)
Adjust (P1)
Central LED (L1)
(Red/Green)
Central LED (L1)
(Red/Green)
Adjust
CF 12 DC
Adjust
Red
White (NO)
Green and
Yellow
or solid Yellow
Green (common)
Blue (NC)
Black
Power
Supply
Contacts
Ground
CF 12 AC
2000mm
1
2
Connector
12mm
NO or NC
contact
2000mm
1
2
Connector
12mm
contact
NO or NC
Nylon Enclosure (N1)
M12 Connector Optional
M12 Connector Optional
1
2 - Power Supply (-)
3 - Ground
4 - NO Contact
5 - Common
6 - NC Contact
- Power Supply (+)
1
2 - Power Supply
3 - NO Contact
4 - NC Contact
5 - Common
- Power Supply
1
2 - Power Supply (-)
3 - NO Contact
4 - NC Contact
5 - Common
- Power Supply (+)
1
1
5
5
2
2
3
3
4
4
07
Wiring Diagram
Aluminium Enclosure (G1/G2)
2SPDT
Bargraph (B1)
Flow 100 %0
+
-
1 2 345 6 7 9
8
CF12AC
+
_
1 2 3 4 5 6
Adjust
1SPDT
Bargraph (B1)
G2
G1
1
2 - Power Supply (-)
3 - Ground
4 - NO Contact
5 - Common
6 - NC Contact
- Power Supply (+)
(P1) - Set Point Potentiometer Adjust
(B1) - 8 LED´s Bargraph: Red LED
Yellow LED
Green LED
(L1) - Central LED - Green: With flow
Red: No flow
1
2 - Power Supply (-)
3 - Ground
4 - NO Contact
5 - Common
6 - NC Contact
7 - NO Contact
8 - Common
9 - NC Contact
- Power Supply (+)
Central LED(L1)
Red/Green
Adjust (P1)
Central LED(L1)
Red/Green
Adjust (P1)
08
Wiring Diagram
(P1) - Set Point Potentiometer Adjust
(B1) - 8 LED´s Bargraph: Red LED
Yellow LED
Green LED
(L1) - Central LED - Green: With flow
Red: No flow
85...260 Vac 50/60 Hz
Adjust
Pin# 1/2 Power
Pin# 3 Ground
Pin# 4 N.O.
Pin# 5 N.C.
Pin# 6 Neutral
-Detect
-Switch
-Flow
CF12AC
G3
B1
P1
L1
1
2
3
4
5
6
7
Conector M12
8
CF12
Flow 100 %0
Adjust
5A 250Vac
+
-
1 2 345 6 7 9
8
2 SPDT
Bargraph (B1)
GX
1
2 - Power Supply
3 - Ground
4 - N.O. Contact
5 - N.C. Contact
6 - Common
7 - None
8 - None
- Power Supply
( )
( )
Central LED(L1)
Red/Green
Adjust (P1)
1
2 - Power Supply (-)
3 - Ground
4 - NO Contact
5 - Common
6 - NC Contact
7 - NO Contact
8 - Common
9 - NC Contact
- Power Supply (+)
( )
( )
09
Wiring Diagram
12mm
L
1
VM
PR
AZ
VD
AM
2345
Adjust
678
159 11 13 141210 16
Sensor
5 A 250V ac
CF12-RM
+_
Bargraph
(24Vcc)
44mm
35mm
84mm
111mm
1
VM
PR
AZ
VD
AM
2345
Adjust
678
159 11 13 141210 16
Sensor
5 A 250V ac
CF12-RM
+_
NC
NO
Adjust
Central LED(L1)
Red/Green
Dimensions
Dimensions
F12 with CF12RM Remote Controller
CF12RM
F12
1
2 - Yellow
3 - Green
4 - Red
5 - Black
- Blue
1
5
2
3
4
10
CF12 Relay Status Guide
Application
FSH Condition
Normal
Alarm
LED Status
RED
GREEN
Set Point
OFF
ON
CF12 SPDT
Status
NO (4) NC (6)
C (5)
C (5)
Application
FSL Condition
Normal
Alarm
LED Status
GREEN
RED
Set Point
ON
OFF
CF12 SPDT
Status
NO (4)
NO (4)
NO (4)
NC (6)
NC (6)
NC (6)
C (5)
C (5)
11
Pre-Installation
Pre-Installation Checks:
1) Its recommended that the flow switch is
installed with a distance of ½ a meter of the pipe
bent where the flow enters and 5x times the
diameter of the pipe where the flow exits, enabling
it to have an accurate reading (Fig. 1).
Verify that the installation point isn’t near any
connections, valves, elbows or anything similar,
this can cause errors in the reading of the probe
due to turbulence in the pipe.
2) It is important that the flow switch is not installed
at the highest point in the pipe run or in a location
where there is the risk of air accumulating in the
pipe. Keep in mind that the ideal mounting
location is where the pipe is always full. This will
ensure that the switch is always immersed in the
flow. (Fig. 2 correct, fig. 3 incorrect)
3) In pipes that have pressure pumps or retention
valves, we recommend that the probe be installed
before the pump due to the fact that it will have
less turbulence. (Fig. 4)
4) Confirm that the wire connections are correct
and that the available power supply is compatible
with the CF12 unit.
5) Verify that the operating pressure and
temperature of the process corresponds to the
operating parameters of the CF12 unit.
More recommendations and handling instructions
can be found on page 14.
Fig. 1
Fig. 4
Pump
Fig. 2
Fig. 3
1/2m 5xØ
12
Installation
Installation:
The CF12 may be installed in a pipe using a
“T”connection (see fig. 1) or inserted directly into
the pipe (see fig. 2). The site might need to adapt
the installation so that it conforms with the
following recommendations.
Flow Switch with
“T” connection
The CF12 is not affected by its fixed position so it
may be installed at any angle around the pipe.
However we recommend that when the pipe is in a
horizontal position the CF12 should be installed
on the side, as long as the tip of the probe sits
within the middle of the pipe
(See Fig. 2).
When the pipe is in a vertical position, the CF12
should be installed only when the water flow is
upward (See Fig. 3).
Care should be taken when installing the CF12
that the probe extends to the center of the pipe
away from the internal wall and is fully immersed
into the flow ( Fig. 4 and 5 incorrect, Fig.1 and 2
are correct).
In pipes with smaller diameters use an adaptor to
enlarge the diameter of the pipe so that the sensor
can be properly installed (See Fig. 6). If the
installation is not correct the CF12's performance
may be affected.
Fig. 4
Fig. 5
Fig. 3
Fig. 2
Fig. 1
Fig. 6
Incorrect
13
Calibration
To Start:
1 - Remove the enclosure lid (Note: the screws are self-retaining)
2 - Start the power supply and wait 5 minutes until the CF12 is active and has reached a
stable point within the medium.
3 - Let the regular or desired flow reach its point of normal operation.
Calibration for Flow / No Flow:
1 - Set the flow rate at the normal range of operation.
2 - Turn the potentiometer counter-clockwise until the central LED turns red.
3 - With the central LED red, turn the potentiometer clockwise until the central LED
changes to a blinking green state.
4 - Continue to turn the potentiometer clockwise until all green LEDs in the bar graph are
on.
5 - In order to be sure that the adjustment is not at a critical state give the potentiometer
an additional quarter turn clockwise.
Set Point Adjustment:
The flow switch can be adjusted to indicate either increasing flow, or decreasing flow at a
specific set point within 3cm/s to 3m/s.
It is important to determine the specific set point at which the flow switch should activate
or de-activate.
0% 100%
BARGRAPH - Lights ON
Set Point
BARGRAPH - Lights ON
0% 100%
BARGRAPH - Lights OFF
Set Point
BARGRAPH - Lights OFF
Adjust Adjust
Calibration
14
To Activate The Switch On Increasing Flow:
1 - Set the flow rate to the desired set point and allow it to stabilize for 2 minutes.
2 - Turn the potentiometer counter-clockwise until the central LED turns red.
3 - Turn the potentiometer clockwise until the central LED changes to a blinking green.
4 - Continue to turn the potentiometer clockwise until the first 2 green LEDs in the bar
graph turn on.
In this mode the CF12 will activated on or above the set point. If there is a decrease of
flow, the CF12 will de-activate. When the flow rate reaches the set point, the CF12 will
activate.
To De-Activate The Switch On Decreasing Flow:
1 - Set the flow rate to the desired set point and allow it to stabilize for 2 minutes.
2 - Turn the potentiometer clockwise until the central LED is blinking green.
3 - Turn the potentiometer counter-clockwise until the central LED turns red.
4 - Continue to turn the potentiometer counter-clockwise until the 2 red LEDs in the bar
graph are off.
In this mode the CF12 will de-activate on or below the set point. If there is an increase of
flow the CF12 will activate. When the flow rate reaches the set point, the CF12 will de-
activate.
Detecting level:
1 - Fill the tank until the probe of the CF12 is fully submerged. Turn the potentiometer
counter-clockwise until the central LED turns red. With the central LED red, turn the
potentiometer clockwise until the central LED changes to a blinking green.
2 - Continue to turn potentiometer clockwise until all green LEDs in the bar graph turn on.
3 - In order to be sure that the adjustment is not at a critical state give the potentiometer
an additional quarter turn clockwise.
Handling
15
Fig. 5
Fig. 4
Fig. 3
Fig. 2
Fig. 1
Seal the thread with Teflon tape before
installation (Fig. 1).
The CF12 should not be dropped or suffer any
impact or fall that could damage the electronics
or the thermal tips of the probe (Fig. 4 and 5).
Ex d Enclosure
Conditions for use:
Do not turn or handle by the housing (Fig. 2).
Use the correct tool during installation (Fig. 3)
Periodic visual inspection of the CF12 is
required to check for corrosion or deposit build-
up. If deposits are found, clean the sensor to
ensure optimum performance.
Care should be taken when handling and
installing probes with coated rods to avoid
scratching them. Scratching the coating could
interfere with the probe performance.
When cleaning the rod use a soft brush or any
other similar object.
Do not open the enclosure in a flammable
atmosphere when there is power supplied to the
unit.
2) The hazardous area approvals apply to the
equipment using a sealed conduit and not cable
glands. When mounting the CF12 in a
hazardous area, only cable glands to EN60079-
31, EN60079-1, IEC60079-1 and IEC60079-31
may be used.
3) All conduit seal fittings must be certified as
flame proof “d”, dust ignition protection “tb” and
have a minimun IP66 rating equal to the marking
on the enclosure.
4) All unused device openings must be fitted with
a certified plug rated the equivalent or greater
than the marking on the device.
Technical Specifications
16
CF12AC
Repeatability
Application
Operating Voltage
Current Consumption
Electrical Connection
Operating Temperature
Gradient Temperature
Set Point Range
Output
Flow Rate Indication
Max Pressure
Accuracy
Response Time
Enclosure Material
Wetted Material
Class Protection
Process Connection
+/- 10%
1 to 10s
15ºC/min
Liquid: 3 cm/s to 3 m/s - Gas: 5 cm/s to 5 m/s
+/- 1% setpoint
Cable gland w/ 2000mm cable, M12 connector or ½” NPT
Red led - flow is below setpoint
Yellow led - flow is at setpoint
Green led - flow is above setpoint
1450 PSI (100 Bar)
IP65 (IEC 60529)
NEMA 4X (G1 / G2 )
Glass filled nylon (option - Aluminium)
316 Stainless Steel
½” to 1 1/2” BSP or NPT, adjustable, sanitary or flanged connections
14 to 176º F (-10 to 80ºC) sanitary option to 248ºF (120ºC)
Flow for liquids and gas level for liquids only
85-240Vac (50/60hz) & 125Vdc
+/- 100mA
Relay(SPDT) 5A - 250Vac (1 SPDT N1/G1/G3)
(2 SPDT - G2 or GX) aluminum enclosure
85...260 Vac 50/60 Hz
Adjust
Pin#1/2 Power
Pin#3 Ground
Pin#4 N.O.
Pin#5 N.C.
Pin#6 Neutral
-Detect
-Switch
-Flow
CF12AC
N1 Enclosure
G2 EnclosureG1 Enclosure G3 Enclosure
Adjust
Flow 100 %0
+
-
1 2 345 6 7 9
8
+
_
1 2 3 4 5 6
Adjust
Technical Specifications
CF12DC
Repeatability
+/- 10%
1 to 10s
15ºC/min
Liquid: 3 cm/s to 3 m/s - Gas: 5 cm/s to 5 m/s
+/- 1% setpoint
24Vdc (+/- 10%)
Application
Operating Voltage
Current Consumption
Electrical Connection
Operating Temperature
Gradient Temperature
Cable gland - 1/2” NPT conduit entry or M12 connector
Set Point Range
Output
Flow Rate Indication
Red led - flow is below setpoint
Yellow led - flow is at setpoint
Green led - flow is above setpoint
Max Pressure 1450 PSI (100 Bar)
Accuracy
Response Time
Enclosure Material Glass filled nylon (option - Aluminium)
Wetted Material 316 Stainless Steel
Class Protection
Process Connection ½” to 1 1/2” BSP or NPT, adjustable, sanitary or flanged connections
14 to 176º F (-10 to 80ºC) sanitary option to 248ºF (120ºC)
Flow for liquids and gas level for liquids only
17
+/- 100mA
+
_
Adjust
N1 Enclosure
Relay(SPDT) 5A - 250Vac (1 SPDT G1)
(2 SPDT - G2 or GX) aluminum enclosure
IP65 (IEC 60529)
NEMA 4X (G1 / G2 )
G2 EnclosureG1 Enclosure
+
_
1 2 3 4 5 6
Ajust
Flow 100 %0
+
-
1 2 345 6 7 9
8
Technical Specifications
1 to 10s
15ºC/min
Liquid.: 3 cm/s to 3 m/s
Gas.: 5 cm/s to 5 m/s
+/- 100mA
M12 Connector
+/- 10%
DC - 24Vdc (+/- 10%)
AC - 85-240Vac & 125Vdc
Relay (No + NC)
Sensor: IP 65
Controller: IP 40
Without Enclousure (standard) or nylon (optional)
Controller: ABS
Application
Operating Voltage
Current Consumption
Electrical Connection
Operating Temperature
Gradient Temperature
Set Point Range
Output
Flow Rate Indication
Max Pressure
Accuracy
Response Time
Enclosure Material
Wetted Material
Class Protection
Process Connection
Red led - flow is below setpoint
Yellow led - flow is at setpoint
Green led - flow is above setpoint
1450 PSI (100 Bar)
316 Stainless Steel
½” to 1 1/2” BSP or NPT,
adjustable, sanitary or flanged connections
14 to 176º F (-10 to 80ºC)
sanitary option to 248ºF (120ºC)
Flow for liquids and gas level for liquids only
F12 + CF12RM
18
CF12 - RM
F12
1
M
V
R
P
Z
A
D
V
M
A
2345
Adjust
678
159 11 13 141210 16
Sensor
5 A 250V ac
CF12-RM
+_
Flow
19
CF12 (Ex d) Housing
Repeatability
Application
Operating Voltage
Current Consumption
Electrical Connection
Operating Temperature
Gradient Temperature
Set Point Range
Output
Flow Rate Indication
Max Pressure
Accuracy
Response Time
Enclosure Material
Wetted Material
Class Protection
Process Connection
+/- 10%
1 to 10s
15ºC/min
Liquid: 3 cm/s to 3 m/s - Gas: 5 cm/s to 5 m/s
+/- 1% setpoint
3/4” NPT
Red led - flow is below setpoint / Yellow led - flow is at setpoint
Green led - flow is above setpoint
1450 PSI (100 Bar)
IP 66
Aluminum
316 Stainless Steel
½” to 1 1/2” BSP or NPT, adjustable, sanitary or flanged connections
14 to 176º F (-10 to 80ºC) sanitary option to 248ºF (120ºC)
Flow for liquids and gas level for liquids only
AC: 85-240Vac (50/60hz) & 125Vdc
DC: 24Vdc +/- 10%
+/- 100mA
Relay( 2 SPDT) 5A - 250Vac
GX Housing
CF12
Fluxo 100 %0
Ajuste
5A 250Vac
+
-
1 2 345 6 7 9
8
ATEX, DEMKO 07 ATEX 0622294,
0539 II 2 G EX d IIC Gb / 0539 II 2 D Ex tb IIIC Db
IECE / IECx UL 08.0005 / Ex d IIC Gb / Ex tb IIIC Db
Ex proof
Housing Certification
Technical Specifications
Ordering Information
20
CF12AC
CF12RM AC
CF12DC
CF12RM DC
MODEL
MODEL
F12
3
SIZE
3
4
5
6
7
0
X
8
9
A
B
Relay for F12 remote / switch supply V: 85-240 VAC or 125 VDC
Relay for F12 remote / switch supply V: 24 VDC (+/- 10%)
3/4”
1”
1 1/2”
2”
2 1/2”
3”
4”
OTHER
1 1/4”
Metric
Thread
B
D
E
F
G
H
J
K
L
M
N
R
S
T
Y
X
BSP
FLANGE ANSI 150# - Carbon Steel Painted
FLANGE ANSI 150# - 316 SS
FLANGE ANSI 150# - PVC
FLANGE ANSI 300# - Carbon Steel Painted
FLANGE ANSI 300# - 316 SS
FLANGE ANSI 300# - PVC
FLANGE ANSI 150# - 304 SS
FLANGE ANSI 300# - 304 SS
Metric Thread
NPT
SMS Female
SMS Male
TRI-CLAMP
FEMALE DIN - 316SS
OTHER - SPECIFY
L100
L35
L50
L75
L
35mm
50mm
75mm
100mm
SPECIFY
HOUSING
SC
N1
NB
NE
NT
G1
G2
NO ENCLOSURE
SMALL NYLON
N1 SHIELDED
N1 Encapsulated
NB + NE
SMALL ALUMINUM (1SPDT) 5A-250Vac
LARGE ALUMINUM (2SPDT) 5A-250Vac
0
1
2
3
4
5
6
7
8
9
C
J
M
P
Y
ELECTRICAL CONNECTION
NONE
1/2" BSP (N1/N2/G1/G2)
CABLE GLAND W/ 1/2" BSP (N1)
CABLE GLAND W/ 1/2" BSP - 2m CABLE (N1)
3/4" BSP (G1)
CABLE GLAND W/ 3/4" BSP (G1)
1/2" NPT (N1/N2/G1/G2)
CABLE GLAND W/ 1/2" NPT
CABLE GLAND W/ 1/2" NPT- 2m CABLE (N1/N2/G1/G2)
3/4" NPT (G1)
CABLE GLAND W/ 3/4" NPT (G1)
M15.8 Connector (9Pins) (N2/G2/G1)
M12 Connector (4 or 5 pins for CF12AC) (N1)
M20 threaded (N1, G1, G2)
Steel Cable Gland M16 w/ 2m PVC cable (F12 & F420)
OPTIONS
Medium Temp - 50mm
316SS Neck (80-120C)
High Temp - 100mm
316SS Neck (80-150C)
Max High Temp - w/
Heat Dissipating Coils
100mm 316SS Neck
(80-200C)
PROCESS CONNECTION TYPE
INSERTION LENGTH
MT
AT
HT
S
H
E
NONE
HALAR Coated
EPOXY Coated
COATING
R
CF12DC 4GSL50 N1 7MT
G3 SMALL ALUMINUM w/ ACRILIC WINDOW (1SPDT) 5A-250Vac
GX EX proof (2SPDT) 5A-250Vac
21
Fault
Relay does not
change state.
LED off, no power
LED doesn’t change color
Check the installation
(insertion length)
Verify the calibration
Check power supply
Cause Solution
Radio frequency
interference
Sensor is potentialy
defective
Flow switch
turns on or
off suddenly
Relay remains
closed
Use armored cable
and shielded housing
Contact Sitron or your
local representative for
further instruction
Trouble Shooting
Montr
é
al Oce
970 Mont
é
e de Liesse, #204
St.Laurent, QC H4T 1W7
ventes@bestobell.com
1-877-331-1225
Atlantic Oce
166 North Side Road
Riverport, NS B0J 2W0
902-529-0355
Head Oce
2880 Argentia Road, Unit 3
Mississauga, ON L5N 7X8
salesdesk@bestobell.com
1-800-668-3979
www.bestobell.com
Since 1953, Quality Products to Sense, Measure & Control
Depuis 1953, Produits De Qualités Pour Détecter, Mesurer & Contrôler
SINCE/DEPUIS 1953
This manual suits for next models
1
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