高精度風冷型恒溫槽用戶手冊

適用于FHW-15AFCG

版本號：Ver.3.17

（2022-4-16）

廣東福雪萊電氣有限公司

尊敬的用戶：

感謝您選擇、使用廣東福雪萊電氣有限公司的產品。為了方便您使用，請仔細閱讀本說明書，并按說明書的步驟操作。

使用時無論有什么問題，請按照此說明書的電話、地址聯(lián)系，我們時刻恭候為您服務。

由于產品的改進和換代，您所使用的設備可能與說明書中介紹不完全一致，謹此致歉, 福雪萊公司不承擔任何錯誤、遺漏或不準確的責任。

注        意

在使用恒溫槽之前，請詳細閱讀使用說明書，并特別注意其中注意事項的內容。

只有在使用、維護過程中嚴格遵照制造商的建議，才能使設備的性能達到設計的水準。

嚴禁非專業(yè)人員在設備正常使用時非法進行各類操作。

除非另有約定，本文檔僅作為使用指導，所有陳述、信息和建議不構成任何明示或暗示的擔保。

廣東福雪萊電氣有限公司.

地址：廣東省東莞市虎門鎮(zhèn)沙角社區(qū)鴻興路6號

服務電話：0769-8*******     13682302959（黃先生）

傳真：0769-8*******

網址：        E-mail：fuxuelai********

目錄

一 概述

二 主要技術參數

三 信號簡介

四 電氣接口

五 使用操作流程：

六 注意事項：

七 裝箱清單：

八 溫控器簡易說明：

九 稱重控制器簡易說明：

一 概述

FHW-15AFCG系列恒溫槽是利用***的半導體的熱-電效應來控制制冷制熱（又稱為珀耳帖效應）的儀器。它具有耐電壓高、功耗低、阻燃、響應時間疾速、使用壽命長(可連續(xù)使用10年以上)等特性。運行無振動、節(jié)能、不耗氧氣、安全性能高、不需制冷劑、體積小、重量輕等特點。發(fā)熱量容易調節(jié)及受電源電壓波動影響小等一系列其它傳統(tǒng)機器無法比較的優(yōu)點。

恒溫方面采用高級鉑熱電阻（Pt100）進行數據采集和用世界知名品牌溫控器進行溫度的恒定調節(jié)，從而精確控制制冷制熱的轉換。該儀器具有控溫精度高、波動度小等特點且具有多種報警指示。

支持RS-485通信和標準的MODBUS通信。

可用于非常潔凈的工作空間；儀器工作穩(wěn)定可靠，操作方便安全，適用于更高要求的試驗場所。

廣泛適用于太陽能電池、生物工程、醫(yī)藥、食品、化工、半導體制造等領域。為用戶提供高精度的、受控的、溫度均勻的恒溫場源，是研究院、高等院校、工廠實驗室、各種半導體設備、理想的恒溫設備。

二 主要技術參數

u 源瓶冷阱尺寸：φ160mmX160mm

u  額定電壓：220V~240V  50Hz/60HZ

u  額定功率：500W

u  額定電流：2.3A(220V) 防護等級：IP21

u  控溫范圍：15 ~ 45℃

u  使用環(huán)境溫度：5~40℃    

u  控溫精度：靜態(tài)≤0.2℃

u  外形尺寸（長X寬X高）：390mmX290mmX300mm

三 信號簡介  

1. 信號指示燈與蜂鳴報警器共7處

電源指示燈（綠色，標識為“POWER”）           1處；

溫控器報警指示燈（紅色，標識為“T.A”）       1處；

溫控器 (溫度控制器，標識為“Temperature ”)    1處 ；

2 厘米液位預警指示燈（黃色，標識為“2CM”）    1 處；

1 厘米液位報警指示燈（紅色，標識為“1CM”）    1 處；

稱重顯示器 (稱重控制儀表，標識為“Electronic scale ”)   1處；

蜂鳴報警器（間續(xù)聲，在設備內部，無標識）     1處。

2. 電源指示燈（綠色，標識為“POWER”）

     設備通電后該指示燈常亮。

3. 溫控器報警指示燈（紅色，標識為“T.A”）

**開機后未到達設定溫度溫控器不報警，到達設定溫度后若溫差大于2度（默認，可調整）時該指示燈常亮，該指示燈亮時COM2口1腳與5腳導通。

4. 2CM 液位預警指示燈（黃色，標識為“2CM”） 

液位接近或低于 2CM，但高于 1CM 時該指示燈常亮，該指示燈亮時 COM2 口 1 腳與 4 腳導通。

5. 1CM 液位報警指示燈（紅色，標識為“1CM”） 

液位接近或低于 1CM 時該指示燈常亮，該指示燈亮時 COM2 口 1 腳與 3 腳導通。

6. 蜂鳴報警器（間續(xù)聲，在設備內部，無標識）

溫控器報警指示燈亮時蜂鳴報警器發(fā)出間續(xù)聲。

四 電氣接口

1、電氣接口主要有以下四處

品字型電源插座 （設備后部，標識為“AC220V”）                      1處

溫度傳感器插座 （設備頂部，圓形插孔無標識）                        1處

COM1接口（設備頂部，DB9K母頭插座，RS485接口，標識為“COM1”）     1處

COM2接口（設備頂部，DB9K公頭插座，設備狀態(tài)接口，標識為“COM2”）   1處

2、品字型電源插座（標識為“AC220V”）

本機采用220V 50Hz/60HZ交流電工作，設備包裝箱內配備一條帶漏電保護開關的電源線。為保障您在使用過程中的人身安全，請使用時務必使用，否則后果自負。注意：敬請使用本公司原裝插頭線（本機標配一條），一定不可以使用不帶漏電保護的電源線代替。

3、溫度傳感器插座（圓形插孔標識為：TEMP）

 本設備包裝箱內配備兩條本公司定制的溫度傳感器，必須把溫度傳感器插入溫度傳感器插座，溫度傳感器沒有接入、接入不到位、損壞、型號不符時，恒溫槽表面的溫控器“PV”值將顯示為“S.ERR”

4、 COM1接口（DB9K母頭插座，標識為“COM1”）    

5、COM2接口（DB9K公頭插座，標識為“COM2”）

6、其它

A.溫控器報警。更換源瓶后**次降溫到離設定溫度+2度（默認，可調整）；通源后溫度超過2度（默認，可調整）時COM2口1腳與5腳導通。

B.2CM處液位低預警。液位接近或低于2CM，但高于1CM時COM1口1腳4腳導通。

C.1CM處液位低報警。液位接近或低于1CM時COM1口1腳與3腳導通，并發(fā)出聲光報警。

D.1CM液位報警和2CM液位預警不會同時發(fā)生，1CM報警后2CM報警消失。

E.三組報警共用一個COM端（未與本機電源相連），報警的開關負載**不超過2A。

F.溫控器報警方式可更改為其它溫控方面的異常報警。

五 使用操作流程：

強酸、強堿、強腐蝕性液體或氣體會損壞本設備。若源瓶內液體有強酸、強堿、強腐蝕性、有毒液體時，操作本設備前必須做好防護措施，并且在有專人監(jiān)護下才可進行如下操作。

A. 確認使用環(huán)境安全，設備無異常后，取下前保溫盒；

B. 將源瓶輕輕放進設備，源瓶放置好后1厘米液位報警指示燈和2厘米液位預警指示燈均不亮；

C. 蓋好保溫蓋綿（黑色圓形，本機附件），輕輕合上前保溫盒；

D. 在源瓶中放溫度檢測傳感器的小玻璃管中滴入導熱油（白色塑料瓶內液體，本機附件），導熱油液位離低部高度在25~65mm，然后插入溫度傳感器至底部；

E. 確保電源開關處于關閉狀態(tài)后接入電源；

F. 打開電源開關；

G. 調整好預設溫度，溫度到達設定溫度恒定一段時間后開始工作；

H. 使用完成后關閉電源開關；

I. 斷開設備電源后清潔機臺。

六 注意事項：

1、必須詳細閱讀本說明書后方可對本系列設備進行操作；

2、安裝控制器的地點應無振動源，應有防日曬、防高溫烘烤、防凍、防潮、防雨淋措施。電源功率要大于設備的額定功率，儀器必須要有良好的“接地”裝置；

3、機器內有交流220V電子元器件，請勿擅自打開，以免發(fā)生觸電危險；

4、不要將設備置于環(huán)境溫度超過使用環(huán)境溫度的地方工作；

5、設備在工作時會發(fā)熱，因此要保持工作環(huán)境的良好通風，以免溫度過高而損壞機器；

6、非專業(yè)人士未經許可，請不要試圖拆開設備，不要私自維修，以免發(fā)生意外事故或加重設備的損壞程度；

7、定期要用無塵紙或無塵布對設備進行清潔保養(yǎng)，保養(yǎng)時請注意不要讓水等液體流入設備內部；

8、環(huán)境溫度過高或通風不良時通源后溫度也會波動更大；

9、使用環(huán)境有較大變化時要重新更改PID參數；

10、使用環(huán)境溫度低于設定溫度時，溫度的恒定方式將由靠制冷恒定變?yōu)榭枯o助加熱來恒定（輔助加熱無獨立PID）當通過輔助加熱來恒定溫度時，溫度控制精度會降低；

11、設備兩側要確保通風良好，否則將影響使用性能；

12、在電源中使用干擾濾波器時，請在確認電壓和電流的基礎上，盡可能安裝在靠近數字調節(jié)器的位置。

設置時請盡可能遠離產生強高頻率的設備( 高頻電焊機、高頻縫合機等) 和產生浪涌的設備。

· 請在額定范圍內使用電源電壓以及負載。

· 為了使電源電壓能在2 秒內達到額定電壓，請通過開關和繼電器等的接點迅速施加電壓。如果緩慢施加電壓，可能會發(fā)生電源沒有復位或輸出誤動作等情況。

七 裝箱清單： 

八、溫控器簡易說明：

① 測量值（PV）顯示屏

運行模式：顯示測量的當前值(PV)； 設定模式：顯示內部參數名。

② 設定值（SV）顯示屏

運行模式：顯示要控制的設定值(SV)； 設定模式：顯示該參數設定值。

③ 單位（℃/℉/%）顯示燈：在參數 3 組的顯示單位[Unt]下，顯示設定的單位。

④ 手動控制顯示燈：手動控制時點亮。

⑤ 多段設定值(SV)顯示燈：當使用 SV 功能時，SV 1～3 中相應的指示燈亮。

⑥ 自整定(Auto-Tuning)顯示燈：執(zhí)行自整定功能時，該指示燈以 1 秒為周期。

⑦ 報警輸出(AL1, AL2)顯示燈：相應報警輸出 ON 時，燈亮。

⑧ 控制輸出(OUT1, OUT2)顯示燈：相應控制輸出 ON 時，燈亮 。

SSRP 功能模型(TK4□-□4S□)的周期控制/相位控制時，操作量在 5.0%點亮。

※使用電流輸出，手動控制時，若操作量 0.0%時，控制輸出顯示燈滅燈，其他情況保持亮燈。自動控制時，操作量在 3.0%以上時，燈亮，2.0%以下時滅燈。

⑨ (MODE)鍵：用于進入參數設置組，復位運行模式，參數組切換，設定值保存。

⑩ ← ↓ ↑鍵：用于進入目標值設置模式，位數移動，變更參數設定值(位數)。

? 數字輸入鍵：同時按↓ ↑鍵 3 秒，在參數 5 組數字輸入鍵[ d1-y ]下，實現設定的功能（RUN/STOP，報警輸出解除，自整定）

八 稱重控制器簡易說明：

1.面板操作說明

      清零/返回鍵   移位鍵   數據調整鍵  菜單/確認鍵

2.指示燈說明

HI:上限輸出指示燈           OK：中限輸出指示燈

LO:下限輸出指示燈            

3.按鍵及快捷操作說明

    ：短按進行清零操作（在主界面）；

             進入二級菜單之后短按進行翻項選擇；

             進入設置激活狀態(tài)后，短按取消激活狀態(tài)；

             二級菜單下長按選項鍵3秒退出到主界面。

    ：主界面長按移位鍵3秒直接進入標定界面；

             二級菜單參數設置界面，短按激活設置；

             激活設置狀態(tài)之后短按移動數字光標；

             在稱重界面短按進行清皮操作。

    ： 進入二級菜單之后調整數據的大小；

             進入一級菜單之后選擇各主菜單；

             在主界面短按該鍵選擇上排顯示：實時測量值、峰值、模擬量值，輸入狀態(tài)，輸出狀態(tài)。

    ： 在主界面長按3秒進入一級菜單；

            在一級菜單短按確定鍵進入二級菜單；

             在二級菜單內修改完數據短按確認鍵寫入；

             在主界面短按，進入上中下限設定界面。

4.校驗標定

A.傳感器砝碼標定

（主顯示界面）        

            長按  3秒

            將傳感器空置，待上排顯示數碼穩(wěn)定，

            短按  標定零點   

         將砝碼放到傳感器工裝上，

            待下排顯示數碼穩(wěn)定，短按

            將砝碼保持在傳感器工裝上，

            將砝碼重量輸入到上面顯示框，短按

  砝碼校準結束

B.無砝碼標定

（主顯示界面）

           長按  3秒

          將傳感器空置，待上排顯示數碼穩(wěn)定，

             短按  標定零點

           在此界面短按  進入無砝碼標定

            輸入傳感器的靈敏度，短按

             輸入傳感器的量程，短按

  無砝碼校準結束

5.菜單詳細說明

1一級菜單

            長按  3秒

           短按

             短按

            短按

短按

從一級菜單進入二級菜單短按  即可進入

AIR-COOLED HIGH-PRECISION THERMOSTATIC BATH

Customer Instruction Manual

Applicable to FHW-15AFCG

Ver.3.17

（2022-4-16）

Fuxuelai Cold&Warm Equipment (Dongguan) Co., Ltd.

Dear:

Thanks for purchasing FUXUELAI high-precision thermostatic bath.

No matter what problem you have, please contact us according to the telephone number and address of this manual.

Due to product improvement and replacement, the equipment you use may not be exactly the same as described in the instruction manual. We apologize. We accepts no responsibility for any errors, omissions or inaccuracies.

Notes

Before using the thermostatic bath, please read the instructions carefully and pay special attention to the notes in the instructions.

Only in the use, the maintenance process strictly comply with the manufacturer's advice, in order to make the performance of the equipment to achieve the design level.

Non-professionals are strictly prohibited from conducting any illegal operation during normal use of the equipment.

Unless otherwise agreed, this document is intended as a guide to use only, and all statements, information and recommendations do not constitute any warranty, express or implied.

Fuxuelai Cold&Warm Equipment (Dongguan) Co., Ltd.

Addres:No. 6 of HongXing Road,Shajiao community,Humen town,Dongguan city,Guangdong province

Website：

E-mail：fuxuelai********

TEL：0769-8*******

TEL：13682302959

?2020~2021 Fuxuelai Cold&Warm Equipment Inc.

Contents

一 Introduction  1

二 Technical Data  1

三Signal Guides 2

四Connections 3

五Use and care guides  5

六Cautions 6

七Packing List  7

八Temperature Controller Instructions  7

九Weighing controller instructions  9

一 Introduction

FHW-15AFCG series of thermostats are instruments that use the thermal-electric effects of the most advance semiconductors to control cooling heating, which also known as the Peltier Effect). The thermostats are high voltage resistance, low power consumption, flame retardant, rapid response and durable (more than 10-year durability in average).  Energy saving, no oxygen consumption, high safety, no refrigerant consumption, small size, light weight and no vibration in working. And there are more advantages, such as ease of adjustment of heat value and very minor affect by voltage change.

To precisely control the conversion of cooling and heating, the thermostats use platinum thermistor (pt100) to collect data and use the top temperature controller in the world to maintain the constant temperature.  The thermostats is high-precision and low volatility.  Multiple alarm styles.

Support RS-485 communication and standard MODBUS communication.

The thermostats is stable and reliable, easy to operate and safe.  The thermostats is highly recommended for high requirements of testing purpose and very clean work space.  

Wildly used in the areas of the manufacturing for Solar cell, Bioengineering, Pharmaceuticals, Food, Chemical and Semiconductor. It can provide users with high-precision, controlled, temperature constant field.  It is ideal for research institute, institutions of university, factory laboratories and semiconductor equipment.

九 Technical Data

u Source tank cold trap dimensions: φ160mm X 160mm

u Nominal voltage: 220V~240V  50Hz/60HZ

u Rated power: 450W

u Rated current: 2.0A(220V)IP grade: IP21

u Temperature control range: 15 ~ 40℃

u Working environment temperature: 5~45℃

u Precision: static state 0.2℃

u Overall dimensions (L W H): 390mmX290mmX300mm

十 Signal Guides

1. 7 indicators and buzzer alarm.

Power indicator (Green with POWER mark) x 1

Temp indicator (Red, with T.A mark) x 1

Temp controller (Temperature mark) x 1

2cm liquid level indicator (Yellow, with 2CM mark) x 1

1cm liquid level indicator (Red, with 1CM mark) x 1

Electric scale monitor (with Electronic Scale mark) x 1

Buzzer alarm (inside instrument, no label) x 1

2. Power indicator (Green with POWER mark)

Light on when power on.

3. Temp indicator (Red, with T.A mark)

The light is OFF when below the setting temperature.  The light is ON when the temperature is 2 degrees higher than the setting temperature.  When the light is on, pins 1 and 2 in COM2 are connected.

4. 2cm liquid level indicator (Yellow, with 2CM mark)

The light is ON when the liquid level is lower than 2CM and higher than 1CM. The pins 1 and 4 in COM2 are connected when light is on.

5. 1cm liquid level indicator (Yellow, with 1CM mark)

The light is ON when the liquid level is lower than 1CM. The pins 1 and 3 in COM2 are connected when light is on.

6. Buzzer alarm (inside instrument, no label)

The buzzer alarm when Temperature Indicator is ON.

十一 Connections

1. 4 connections

Power connection (at the rear, labeled as AC220V) x 1

Thermal sensor connection (On top, round hole with no label) x 1

COM1 connection (On top, DB9K connection, labeled as COM1) x 1

COM2 connection (On top, DB9K connection, labeled as COM2) x 1

2. Power connection (at the rear, labeled as AC220V)

The nominal power of the machine is 220V 50Hz/60HZ AC.  1 cable with earth leakage circuit breaker is included in the package.  Caution: please use the cable supplied by our company.  Do not use none earth leakage circuit breaker cable.  Otherwise, personal injury or property damage might occur.

3. Thermal sensor connection (On top, round hole with label TEMP)

There are 2 thermal sensors included in the carton.  The thermal sensor should be plugged in the thermal sensor connection.  The PV value on the thermal monitor is “S.ERR” if the thermal sensor is not connected properly, damaged or on incorrect model.

4. COM1 connection (On top, DB9K female connection, labeled as COM1)

5. COM2 connection (On top, DB9K male connection, labeled as COM2)

6. Additional info

A. Temperature alarm.  The first time temperature cooling to the setting temperature +2 degree (default value, can be set) after the source tank is replaced.

Pins 1 and 5 in COM2 are connected once the power on and the temperature is higher than 2 degree (default value, can be set).

B. 2CM alarm. The pins 1 and 4 in COM1 are connected when liquid level is lower than 2CM and higher than 1CM.

C. 1CM alarm. The pins 1 and 3 in COM1 are connected when liquid level is lower than 1CM.

D. 1CM and 2CM alarms should not be happen at the same time

E. 3 sets of alarm use a common COM (not connect to the power source).  The max current for alarm is 2A.

F. Temperature alarm style can be changed to the other alarm style.

十二 Use and care guides

Strong acid, strong base, strong corrosive liquid or gas could damage the machine.  Please wear protective suit when operating if the source tank contains strong acid, strong base, strong corrosive or toxic liquid or gas.  Please only operate with the assistance of a guardian.

A. Make sure the environment and the machine are safe, remove the front insulation box.

B. Place the source tank into machine.  The 1cm and 2cm liquid level indicator are OFF when then source tank is in proper position.

C. Cover the source tank with insulation cotton.  Replace front insulation box.

D. Add 25-65mm conduction oil into the small tube for temperature sensor.  Insert temperature sensor into tube. The end tip of temperature sensor should touch the bottom of small tube.

E. Make sure the power switch is OFF.  Plug the power cord.

F. Turn power switch ON.

G. Set up the target temperature.  The machine start working when temperature rise to  the target temperature for a couple of minutes.

H.  Ture power OFF after using.

I.  Unplug the power cord and clean the machine.

十三 Cautions

1. Read the instruction manual before operate the machine.

2. Make sure there is NO vibration source close to the machine.  And there are solarization, high temperature, freezing and rain proof.  The power must be large than rating power.  The machine must be earthing.

3. There are 220V AC electric parts in machine.  Do not disassemble the machine if you are not a qualified expert.  Otherwise injury or property damage could be happen.

4. Do not place the machine in the environment where the temperature is higher than the rating working temperature.

5. The machine is getting hot in working. Make sure the working environment is well ventilated to protect the machine from being damaged by over heat.

6. Unauthorized expert, please do NOT disassemble and repair the machine.  Otherwise the machine could be damaged or personal injury or property damage could occur.

7. Maintain the machine regularly with dust-free paper or fabric.  Make sure no water or liquid leak into machine.

8. Temperature change more after power ON if the environment temperature is too high or poor ventilation.

9. The PID parameters need to be changed if the working environment changing obviously.

10. The temperature constant method will change from chilling constant to heating constant when the working temperature is lower than the setting temperature.  The temperature control accuracy could be lower when maintain the temperature with heating constant.

11. There must be well ventilated around machine, otherwise the performance of the machine could be affected.

12. Verify the voltage and current, the interference filter should be installed close to the digital governer if the interference filter is required for the power.

Please keep the high-frequent and surging equipment away when setting up.

· Use the power voltage and load according to the rating value.

· Increase the voltage rapidly by the connections of switch and relay to make the voltage approaching the rating voltage in 2 seconds.  The power might not reset or malfunction could be happen.

十四 Packing List (Packing dimensions: 460 x 370 x 450 mm)

十五 Temperature Controller Instructions

1. Measurements (PV) display

Operation mode: Display the current value of measurement (PV); Setup mode: Display internal parameter name.

2. Setting Value (SV) Display

Operation mode: Display the set value (SV) to be controlled; Setup mode: Display the parameter settings.

3. Display light in units (//%): under the display unit [Unt] of the parameter group 3, display the set unit.

4. Manually control the display light: Light up when manually controlled.

5. Multi-Segment Setting Value (SV) Display light: When using the SV function, the corresponding indicators in SV 1-3 are on.

6. Auto-Tuning display light: When the self-tuning function is performed, the light cycle is 1 second.

7. Alarm output (AL1, AL2) display light: When the corresponding alarm output ON, the light is on.

8.Control output (OUT1, OUT2) display light: When the corresponding control output ON, the light is on.

When the SSRP function model (TK4-4S) is under cycle/phase control, the operation amount is 5.0%.

_When using current output and manual control, if the operation amount is 0.0%, the control output display light goes out, otherwise the light remains on. In automatic control, when the operation amount is more than 3.0%, the lamp turns on and the lamp turns off when the operation amount is less than 2.0%.

9. (MODE) key: used to enter parameter settings group, reset operation mode, switch parameter groups, save settings.

10. key: used to enter the target value setting mode, digit movement, change parameter setting value (digits).

11. Digital Input Key: Press_key for 3 seconds at the same time, and realize the set functions (RUN/STOP, alarm output released, self-tuning) under 5 sets of digital input keys with parameters [d1-y]

十六 Weighing controller instructions

1.Control panel instructions

2.Indicator light instructions

HI: Upper limit output indicator

LO: Lower limit output indicator

OK: Medium limit output indicator

3. Keys and shortcut instructions

Quick press to clear (in main interface)

Quick press to change tab in sub manual.

Quick press to cancel activity in setting activity status.

Press 3 seconds to return to main interface in sub manual.

In main interface, press 3 seconds to go setting interface.

In sub interface, quick press to active setting.

In setting status, quick press to move curse.

In weighing interface, quick press to clear the additional weight.

In sub menu, quick press to adjust the value.

In main menu, quick press to select tab.

In main interface, quick press to select the top of the value: measured value, peak value, simulation value, input/ output status.

In main interface, press 3 seconds to go sub menu.

In main menu, quick press to go sub menu.

In sub menu, quick press to confirm the setting.

In main interface, quick press to go the upper, medium, lower limits setting interface.

4.Demarcate Calibration

A. Sensor weight demarcate

   Main interface     

                 Press 3 seconds

              Clear the sensor value until the upper value is fixed.

Quick press  to clear demarcate.

              Put the weight on sensor fixture.

                 When the lower value is fixed, quick press ENT button.

              Keep the weight on sensor fixture.

               Input the weight to the upper value, quick press ENT button.

  Weight calibration is completed.

B. No weight demarcate

No weight demarcate

     Main interface     

                Press 3 seconds

              Clear the sensor value until the upper value is fixed.

                 Quick press  to clear demarcate.

                 Quick press  to do no weight demarcate.

                 Input the sensor sensitivity value, quick press ENT button.

                 Input the sensor measuring range, quick press ENT button.

    No weight calibration is completed.

5.Menu instructions

1 Main menu

                 Press ENT button 3 seconds.

              Quick press

               Quick press

                  Quick press

               Quick press

    Go to sub menu, Quick press ENT button to go the setting menu.