Star Meter CYW18 Instruction Manual

An instruction manual
CYW18 gas collector type input level transmitter
Typical applications
High temperature liquid measurement
Corrosive liquid measurement
Sewage measurement
1.Overview
1.1 Safety guidance
This operational manual contains important information on how to use the
transmitter correctly. The installation personnel of the transmitter should
read this manual carefully before operation. In case of further explanation
or special questions, which cannot be addressed in this manual, please
contact our company for assistance on necessary information.
Please pay attention to the warning signs on the manual! Do not use
crystallized or solidified measure medium, to avoid damaging of the sensor.
The operator must strictly follow the safety instructions and user's
manual during operation. Furthermore, the operator should comply with the
occupational safety rules, the accident prevention guidelines, the national
standards and engineering specifications as well.
Please keep this manual in a safe place near the transmitter for easy
access.
The copyright of this operational manual is protected. This version of
operational manual was edited according to the functions of corresponding
products, the product functions and operation procedures are described as
complete as possible. If there is any error, please don't hesitate to
contact us. The company is not responsible, in regard of any fault
description or its possible consequences.
–The right to modify the technical parameters is retained–
1.2 Icon description
！ Danger! - Hazard that may result in death or serious injury.
！
Warning!- Potential hazard that may result in death orserious injury.
Cautious!-Potential hazard that may cause minor injury.
！
！ Reminder!-Potential hazard that may result in personal injury.
Tips!-Tips and information for smooth operation of the equipment.
1.3 Manual user
Warning! This manual is suitable for technicians.
1.4 Limit of liability
！
The company will not be held responsible nor provide any warranty
service, in case of transmitter damages caused by failure to follow the
instruction manual, inappropriate use, self-modification or destruction.
1.5 Instructions for use
The input level transmitter is designed to continuously measure the
change of liquid level. Operators have the responsibility to check whether
the equipment is suitable for the working conditions. If you have any
questions, please contact our sales department to ensure the correct
application of the transmitter. The Company shall not bear any
responsibility for the influence caused by improper selection.
Users should ensure that the medium under test is compatible with the
contact material of the transmitter.
Warning!
！
Inappropriate use may lead to danger!
2.Product overview
CYW 18 series gas collector liquid level transmitters adopt gas pressure
conduction method to measure high temperature, corrosive liquid, sewage,
etc. The transmitter consists of stainless steel gas collector, stainless
steel capillary and junction box. The sensor part and signal processing
circuit are inside the junction box, and the gas and medium in the gas
collector put into the liquid are connected. The pressure is transmitted to
the sensor through the air duct, which avoids the direct contact between
the sensor and the measured medium. It is suitable for the measurement of
high temperature corrosive liquids and other occasions, and effectively
solves the problem of high temperature corrosive liquids and sewage level
measurement.
3.Working principle
The pressure formula of the sensor facing the liquid surface is
as follows:Ρ=ρgh + Po：
P ：Pressure on the liquid surface of the sensor (hereinafter
referred to as pressure for ease of understanding)
ρ：Measured liquid density（debugging defaults to1g/cm³ ）
9.8m/s²
g ：Gravity acceleration (
for debugging)
Po：Atmospheric pressure on liquid surface
STAR METER
24-hour service hotline：400-600-4496
星仪传感器
h ：Depth of sensor input into liquid
STAR METER
When the sensor is put into a certain depth of the liquid under
test, the pressure of the medium under test is introduced into the
positive pressure chamber of the sensor. The pressure P o on the
liquid surface is connected with the negative pressure chamber of the
sensor through the cable guide pipe to offset the positive pressure
of the sensor, so that the pressure measured by the sensor is Rho gh.
Obviously, the liquid level depth can be obtained by measuring the
pressure P.
4.Product characteristics
a) Diffusion Silicon Pressure Sensor and Diaphragm Isolation
Technology
b)Stainless steel capillary connection, directly put into the
field, easy to install
c) Amplifier circuit uses integrated chip, wide voltage supply
d) Anti-clogging, anti-scaling and high temperature resistance
e) Strong anti-lightning, frequency-cut jamming design and
anti-jamming ability
f) Connection Reverse and Overvoltage Protection, Current
Limiting Protection (Current Limiting Output)
5.technical parameter
Measuring medium: Water (H O) or liquid compatible with contact material
2
Integral Material: Diaphragm 316L Stainless Steel
Collector 304 stainless steel (contact)
Seal NBR
Die Cast Aluminum for Connection Box
Capillary 304 stainless steel (contact)
Range range: 0～1～10mH2O（Detailed Range Selection Table）
output signal : 4～20mA、RS485（Standard Modbus-RTU Protocol）、
（0～10VDC、0～5VDC、1～5VDC、0.5～2.5VDC Custom）
供电电压 : 12～36VDC routine
24VDC Intrinsically safe / dust intrinsically safe
15～36VDC General (with display or output)0～10VDC）
3～5VDC Customization (output as0.5～2.5VDC/RS485）
精度等级 : 0.25%FS （range≥10m default）
0.5%FS （1m≤range＜10m default）
Table Head Display Accuracy 0.5% FS, Digital Tube (LED) Display
Working Conditions: Medium Temperature -40～180℃
ambient temperature -40～85℃
temperature compensation : -10～60℃
Intrinsically safe explosion-proof : Intrinsically safe Ex ia ⅡC T6 Ga
（Current Output Limited）
Essential Safety Type of Dust Ex ia Ⅱ C T6 Ga、Ex iaD 20
T80℃ （Current Output Limited）
Note: Essential safety must be powered by safety grids or
intrinsically safe power supplies
Seismic performance : 10g(20...2000Hz)
Overload capacity : 200% Full range
Response frequency : Analog signal output≤500Hz、Digital signal
output≤5Hz
Stability performance : ±0.1% FS/year
temperature drift: ±0.01%FS/℃（Temperature Compensation Range）
Overall weight: ≈1300g
Protection Level : probe
Connection box Standard type IP65
Intrinsically safe IP65
Dust intrinsically safe explosion-proof IP66
Note: The above protection level refers to the level
achieved after the electrical connection is complete.
Power range: Current mode≤0.02Us(W)
Digital type≤0.015Us(W)
Voltage type≤0.008Us（W）
Voltage type（output0.5～2.5）≤0.001Us（W）
Note: Us = supply voltage
Load characteristics : Current-mode load≤{（Us-7.5）÷0.02（Us=Power
supply voltage）}Ω Voltage type load≥100kΩ
Load resistance
（4～20）mA DC
RL（Ω）
1200
1000
800
600
400
200
7 . 5 10
6.Shape size
No display95mm
display105mm
Electrical interface
M20*1.5
M35*1.5mm
Capillary diameter4mm
IP68
work area
Us（VDC）
15 20 25 30 36 working voltage
Figure 5-1
within M30*1
∅27.5mm
31.5mm
10mm
Figure 6-1
1
10mm 10mm 9mm 21～26mm
M20*1.5
Plug Locking joint
Plug Material
P-type Out-line Protection Converter
Applicable standard type and
6061 aluminium
intrinsically safe type
Note: Lock line diameter 5-9 mm
17mm 30～33mm
10mm 10mm
M20*1.5
S=27
Plug Locking joint
G-type outgoing protection converter Plug Material
6061 aluminium
Applicable to dust intrinsically safe
explosion-proof
Note: Lock line diameter 5-6 mm
7、Explosion-proof instructions
7.1 Explosion-proof Types and Marks
The transmitter is divided into intrinsic safety type and dust
explosion-proof intrinsic safety type.
(1) Intrinsically safe type: GB3836.1-2021、GB3836.4-2021
Explosion-proof sign: Ex IA II C T6 Ga
Intrinsic safety parameters: Ui=D28.0V Ii=93mA Ci=50nF Pi=0.65W
Related device parameters: Uo < Ui Io < Ii Po < Pi Co = Cc + Ci Lo =
Lc + Li
Uo, Io, Po, Co and Lo are the parameters of safety grids, while Cc and
Lc are the distribution parameters of connecting cables.
Explosion-proof certificate number: CMExC22.41002X
(2) Essential safety type of dust: GB3836.1-2021、GB3836.4-2021
Explosion-proof sign: Ex IA II C T6 Ga, Ex ia IIIC T85℃ Da
Intrinsic safety parameters:Ui=D28.0V Ii=93mA Ci=50nF Pi=0.65W
Related device parameters: Uo < Ui Io < Ii Po < Pi Co = Cc + Ci Lo =
Lc + Li
Uo, Io, Po, Co and Lo are the parameters of safety grids, while Cc and
Lc are the distribution parameters of connecting cables.
Explosion-proof certificate number: CMExC22.41002X
7.2 Cautions for Use of Explosion-proof Transmitter
Warning!
！
(a) Transmitters shall be installed strictly in accordance with
the relevant provisions of GB3836.15-2017 "Electrical equipment for
explosive gas environment Part 15: Electrical installation in
dangerous places (except coal mines)"
DANGER!
！
B) The transmitter housing must be effectively grounded.
DANGER!
！
C) The shell of the product is made of aluminium alloy. The
ignition hazard caused by impact or friction must be prevented.
Warning!
！
D) When the internal parts of the transmitter are damaged and
need to be repaired or replaced, they need to be replaced or repaired
at the factory.
Warning!
！
E) When flameproof and dust intrinsically safe transducers are
used in dangerous places, the shell cover of the transducer must be
tightened. In order to ensure the safety of the transducer, safety
regulations should be strictly observed and the cover of the
transducer should never be opened when the power is on. When
installing the transmitter, the lead-in and exit of the cable should
be well sealed.
！ DANGER!
F) Essentially safe transmitters must be equipped with safety
grids to be used in dangerous places with explosive mixtures. Safety
grate shall comply with GB3836.4-2010 "Essential Safety Type I" of
Electrical Equipment for Explosive Gas Environment Part 4, and shall
be tested by relevant explosion-proof departments and obtained
explosion-proof certificate. Installation shall be carried out in
accordance with the requirements of the instructions. The system
wiring is shown in Figure 7-1.
ExiaⅡCT6 [Exia]ⅡCT6
Dangerous places Safety Places
+
P
P
Safety
－
I
grate
Figure 7-1
！
Warning!
G) For the sake of safety, intrinsic safety loop and
non-intrinsic safety loop should be distinguished, and the connection
of intrinsic safety loop should be separated from that of other
electrical circuits. Power transformers supplying power to safety
grids shall meet the requirements of Article 8.1 of GB3836.4-2010
Standard.
Warning!
！
(h) The matters needing attention in the use of explosion-proof
transmitters should be implemented in accordance with the relevant
provisions of the State.
Executive standard JB∕T12598-2016
www.star-sensor.com
S=24
M20*1.5
Material of locking joint
nylon
M20*1.5
S=24
Material of locking joint
304 stainless steel
+
RL
Power Supply
－
24V D C
版号19.5.18