Features：
1）If the fault of the product or abnormal system lead to a serious accident, please set the appropriate circuit protection outside.
2）Before the connection completely, please do not power. Otherwise it may result in electric shock, fire, malfunction.
3）Do not use the product out of scope of specifications range. Otherwise, it may result in fire, malfunction.
4）Do not use in places with flammable and explosive gas.
5） Do not touch the site of high voltage power terminal site after power. Otherwise, there is danger of electric shock.
6）Do not disassemble, repair and modify this product. Otherwise,it may result in electric shock, fire, malfunction.
Safety Caution
SF Series
KKSFE03-A/2-20220927Page01
1.Installation：
1）This product is used in the following environmental standards.
（IEC61010-1）[Overvoltage categoryⅡ、class of pollution 2]
2）This product is used in the following scope:surrounding environment, temperature, humidity and environmental conditions.
Temperature：0～50℃；Humidity：45～85%RH;Environment condition：Indoor warranty,The altitude is less than 2000m.
3）Please avoid using in the following places:
The place will be dew for changing temperature;with corrosive gases and flammable gas;with vibration and impact;with water, oil, chemicals,
smoke and steam facilities with Dust, salt, metal powder;and with clutter interference, static electric and magnetic fields, noise;where has air
conditioning or heating of air blowing directly to the site.
4）On the occasion of the installation, please consider the following before installing several.
In order to protect heat saturated, please ensure adequate ventilation space.
Please consider connections and environment,and ensure that the products below for more than 50mm space.
Please avoid to installed over the machine of the calorific value(Such as heaters, transformer, semiconductor operations, the bulk resistance).
When the surrounding is more than 50℃, please using the force fan or cooling fans.But don't let cold air blowing directly to the product.
In order to improve the anti - interference performance and security, please try to stay away from high pressure machines, power machines to
install.Don`t install on the same plate with high pressure machine and the product.
The distance should be more than 200mm between the product and power line.
Warning
● The upper line red LED display real time,maximum & minimum value,and the lower line greenLED display measure unit or alarm value.
● Support 3 alarms output maximum
● Support many kinds of linear signal inputs or temperature sensor signals
● Optional 4-20mA DC transmition output , can modify the transmition range and make calibration.
●RS485 communication and Modbus-RTU protocol
●Power supply 100 ～ 240V AC/DC。
●Isolated DC24V voltage output（30mA）。
● Peak value hold function, easy to record the maximum and minimum measurement data
●easy to operate, economical and practical.
SF Sensor Meter User Manual
The instruction explain instrument settings,connections,name and etc,please read carefully before you use the temperature controller.
Caution
1）This product should not be used in a nuclear plant and medical equipment which associated with human life.
2）Some time,it will happen radio interference when the product uses in home environment.It should take adequate countermeasures.
3）This product has electric shock protection through improved insulation.And when using the product and connecting,it subject to
compliance with specifications.
4）In order to avoid lighting surge,it should set appropriate surge suppression circuits when the product uses in the environment where
the total cable lengh more than 30 metre.
5）The product uses in disk,and avoid to touch the part of high voltage,please take the necessary measure on the final product.
6）Please observe the precautions in this manual, otherwise there is risk of causing significant harm or accident.
7）Please abserve the regulation when wiring.
8）To prevent to damage the machine and prevent to machine failure, the product is connected with power lines or large capacity input and output
lines and other methods please install proper capacity fuse or other methods of protection circuit.
9）Please don't put metal and wire clastic mixed with this product,otherwise it may lead to electric shock, fire, fault.
10）Please tighten screw torque according to the rules.If not,it may lead to electric shock and fire.
11）In order not to interfere with this products to dissipate heat, please don't plug casing around the cooling vent hole and equipment.
12）Please don`t knock or rub the panel with rigid thing.
13）The readers of this manual should have basic knowledge of electrical,control, computer and communications.
14）The illustration, example of data and screen in this manual is convenient to understand,instead of guaranteeing the result of the operation.
15）In order to use this product with safety for long-term,regular maintenance is necessary. The life of some parts of the equipments are by
some restrictions, but the performance of some will change for using many years.
16）Without prior notice, the contents of this manual will be change. We hope these is no any loopholes, if you have questions or objections, please
contact us.
Caution of Install & Connection
Ⅲ.Specification
Ⅱ.Order Model Information
Ⅰ.Model Illustration
SF□-A0
SF□-R20B
SF□-IR20B
SF□-IR28B
SF□-A0-T
SF□-R20B-T
SF□-R28B-T
SF□-IR20B-T
SF□-IR28B-T
SF series sensor Indicator
C：Version
B: With DC 24V auxiliary voltage Blank:No auxiliary voltage
T: Temperature sensor input Blank:Voltage,current input
0: without RS485 8:with RS485 communication
I: With DC 4-20mA transmition output Blank: No transmition output
4: 48W*48Hmm 6: 48W*96Hmm 7: 72W*72Hmm 8: 96W*48Hmm
9: 96W*96H mm 16：80W*160Hmm 80：160W*80Hmm
Blank: No alarm 2: 2 alarms 3: 3 alarms
A: No alarm R: With alarm relay output
Signal input
mA、V
mA、V
mA、V
mA、V
mA、V
TC/RTD/mV/RT
TC/RTD/mV/RT
TC/RTD/mV/RT
TC/RTD/mV/RT
TC/RTD/mV/RT
2
2
2
2
2
2
2
2
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Alarm Auxiliary voltage
Transmition output
RS485
SF 8 - I R 2 8 B T - C
Model
1.Electrical parameters
Sample rate
Relay capacity
Power supply AC/DC 100 ～ 240V （85-265V）
Power consumption
Environment
Storage environment
4 Times/seconds
AC 250V /3A life of rateD load>100,000 times
<6VA
Indoor , temperature: -5 ～ 50℃ no condensation; Humidity:＜85%RH; Altitude<2000m
-10 ～ 60℃,no condensation
Page02
2.Cable caution：
1）Please use specified compensation wire in the place of TC input;Please use insulated TC if the measured device is heated metal.
2）Please use the cable of lesser resistance in the place of RTD input,and the cable(3 wire) must be no resistance difference,but the total length is within 5m.
3）In order to avoid the effect of noise,please put the input dignal away from meter cable,power cable,load cable to wiring.
4）
In order to reduce the power cables and the load power cables on the effect of this product,please use noise filter in the place where easy to effect.You must install it
on the grounding of the disk if you use the noise filter,and make the wiring to be shortest between noise filter output side and power connectors.Don`t install fuse and
switch on the wiring of noice filter output side,otherwise it will reduce the effect of noise filter.
5）It takes 5s from input power to output.If there is a place with interlocking actions circuit signal,please use timer relay.
6）Please use twisted pair with a shield for analog output line,to ensure the reliabilty of signal.
7）
Please use twisted pair with a shield for remote RS485 communication cable,and deal with the shield on the host side earth,otherwise it will reduce the effect of noise
filter.
8）This product is not the fuse;please set according to rated voltage 250V,rated current 1A if you need;fuse type:relay fuse.
9）Please use the suitable screw force and crimp terminal.
The screw terminal size：M4X8（with 7.0X7.0 square base）
Recommended tightening torque：0.7N.m
Proper cables：0.25～1.65mm single cable/multiple core cable
10）Please don`t put the Crimp terminal or bare wire part contact with adjacent connector.
SF□-R28B
Current output
Communication port
Insulation impedance
ESD
Pulse traip anti-interference
Lightning surge
Frequency drop
Dielectric strength
DC 4 ～ 20mA load < 500Ω
RS485 port Modbus-RTU procotol
Input,output,power cabinet＞20MΩ
IEC/EN61000-4-2 Contact ±4KV /Air ±8KV perf.Criteria B
IEC/EN61000-4-4 ±2KV perf.Criteria B
IEC/EN61000-4-5 ±2KV perf.Criteria B
IEC/EN61000-4-29 0% ～ 70% perf.Criteria B
Signal input & output & power AC 500V 1min，below 60V Low voltage circuit between DC 500V,
1min
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