FineTek SP2 User manual

SP2 THERMAL FLOW SWITCH OPERATION MANUAL
1.Introduction
Thermal dispersion flow switch is a precise flow
sensing device, whose movement principle is
heat diffusion.The probe consists of two
temperature sensors. One sensor measures the
temperature of the fluid when the probe is
immersed. The other sensor is heated by a
constant power.
When installing SP, please use supplied sealing ring.(Not including NPT&PT fitting).
(1).Please assure the minimum distance to the tube bends and intersections greater than four times of
pipe diameter. (See Fig. 1)
(2).Please assure that there is no air bubble in the tube to achieve reliable alarm action. (See Fig. 2).
(3).When the fluid does not completely fill the pipe, SP must be installed below the pipe. And the fluid
level must be higher than the tip of the SP.(See Fig. 3)
(4).Please assure that SP is mounted tightly to prevent leakage. SP could be mounted on the pipe at
any orientation, but the best sensitivity and fastest response will be realized at orientation shown in
Fig. 4.
(5).If there are any particle exists in the fluid, please install a suitable filtering element at the upstream
of SP to prevent contamination on the probe of SP.
2.Mounting instruction
a
d
a³4xd
a
Fig. 1
3.Flow monitoring
SP is equipped with 6 LEDs for visual flow velocity monitoring. (See Fig.5)
(1). Red LED : Flow velocity is below alarm setting. Output ==【OFF】
(2). Yellow LED: Flow velocity is close to alarm setting. Output ==【ON】
(3). Green LEDs(H4) : Degree of the flow velocity over the alarm setting. Output ==【ON】
4.Alarm setting
(1). Installing the SP on the flow piping.
(2). Power ON SP and wait for at least 15 seconds for initial warm up.
(3). a. For open collector output type : Removing two screws of sensitivity and alarm. (See Fig.5)
b. For relay output type : Removing the cover
(4). Adjust the sensitivity setting counter-clockwise to minimum.
(5). Adjusting the flow velocity to the minimum acceptable level.
(6). Adjust the alarm setting until yellow LED and three green LEDs lit .
(7). Slowly adjust alarm setting clockwise until yellow LED and one green LED lit.
(8). Slowly decreasing the flow velocity until red LED lit to check the flow velocity of alarm engaged.
(9). If the velocity deviation between yellow and red LEDs is too large, then adjust the sensitivity
setting clockwise to increase sensitivity. Do step (5),(6),(7) again.
(10). a. For open collector output type : Putting two screws of sensitivity and alarm back.
B. For relay output type : Putting the cover back
(11). SP220 Economy Type can not set sensitivity and alarm.
5.Specification
(1). Flow velocity: 1~150 cm/s (water), 3~300 cm/s(oil)
(2). Warm-up time: 15 sec. (approximate)
(3). Operation temperature: -20 ~ 80BC(fluid)
(4). Operation pressure: 100 bar (max.)
(5). Degree of protection: IP67 (SP220: IP65)
(6). Supply voltage: 19~30Vdc
(7). Output: Open collector---NPN / PNP, 400 mA max. (with current limiting).
Relay---1A/30Vdc, 0.3A/125Vac (NO or NC),
5A/250Vac max. (SPDT)
), (SP202: 120BC max.)
This creates a temperature difference between two sensors. Temperature difference is an
inverse ratio to the flow velocity. The probe and housing are made by stainless steel or
engineering plastic. Since the device is without moving parts, therefore there is no wear
and tear problem.and sensitivity individually. User can set the alarm and sensitivity easily.
Fig. 2
Fig. 3 Fig. 4
ALARM
SENSITIVITY
MOD EL:
SP-200
Fig. 5

6.Wiring
3
1
4
N PN
)
)
)
Blue
Brown
Black
+
3-wire 4-wire
1
3
4
PNP
)
)
)
Brown
Blue
Black
+
Fig. 7, PNP output type wiring
Relay
Red
Black
White
Yellow
Blue
+
COM
NC
NO
Fig. 8, 5A Relay output type wiring
1
3
2
4
)
)
)
)
NO
Blue
Brown
Black
Green
+
Fig. 9 (NO), 1A Relay output type wiring
1
3
2
4
)
)
)
)
+
Blue
Brown
Black
Green
Fig. (NC)10, 1A Relay output type wiring
NC
7.Pin assignment
1
2
3
4
Fig. 12 Terminal diagram (NPN & PNP and 1A Relay output type)
8.Dimension
9.Maintenance
Under normal operating conditions, no special maintenance is required. Contamination on the probe
of SP could change its thermal property. If necessary, using a suitable solvent to clean the surface of
the probe periodically.
After cleaning process, re-checking alarm setting and leakage of sealing ring is recommended.
10.Warranty
The warranty of SP is described as following:
Period of warranty: 12 months after receiving.
Validation of warranty: The warranty is valid only when the SP is using under normal operating
condition specified in the specifications of SP.
Our warranty: Replace with new SP or repairing.
※Subject to change without notice
※Screw table
5-wire
Fig. 6, NPN output type wiring
C
NC
NO
Fig. 11, 5A Relay output type wiring
5-terminal
Fig. 15 SP210 5A(Relay)Fig. 13 SP200 Fig. 14 SP202 Fig. 16 SP220
08-SP2XX-B1-EM,11/19/2014
Tel [phone]
Email: [e-mail] http://www.fine-tek.com
: Fax: [phone]
No.16, Tzuchiang St., Tucheng Industrial Park, New Taipei City 23678, Taiwan.
F i n e T e k C o . , L t d .
Screw head
Screw
1/4”
1/2”
1”
L
8.5mm 10mm
19mm
16mm 20mm
PF,BSP PT,NPT
10.5mm
Screw head L
25mm
36mm
31mm
25mm
40mm
40mm
Standard
Screw
1/2”
1”
16mm
16mm 20mm
PF,BSP PT,NPT
11.5mm 16mm 20mm
L
Screw head
Screw head Screw head
Extension
31
f38
f70
46
PG
32
f7.4
G1/2"
78
40.5
31
HEX38
f7.4
M12
G 1/2"
f7.4
1/2"PF L=31
HEX38
M12
72.5
59.5
f7.4 30 19.8
L=31
41
106
40 M12
1/2"PF