Technical parameters

1. Display mode: Five-digit liquid crystal display
2. The test medium: Liquid or gas compatible with material
3. Scale range:-0.1~ 60MPaInner arbitrary interval
4. Precision grade: 0.5%FS
5. Stability: ±0.5%FS/Y
6. Working voltage:3.6VDC battery
7. Battery capacity:19000mAh
8. Sleep currency: <30uA
9. Transmit currency: <140mA
10. Receive currency: <15mA
11. Working temperature:-20~60°C
12. Overload capacity:300%
13. Service life:>9 million Pressure cycle 
14. Install the screw:M20*1.5, G1/2, etc.
15. Protection grade:IP65
16. Data transmission rate: 300bps～5.4Kbps
17. Maximum transmission power: 25db
18. Receiving sensitivity: -150dBm (SF=12)

LoraWan Frequency: 433Mhz, 470MHz, 868Mhz, 915Mhz, 923Mhz

 Instructions
Left-click :Backlit switch / shift    M key:Menu Settings / Confirm

Right-click: Supply voltage/AD value/Numerical change

Long press M key 3 sec，Enter the menu password setting;

Group 1 Menu password 0001; 

Group 2 Menu password 0002;(This set of parameters is the factory calibration Settings, non-professional personnel do

not modify) 

Group 3 Menu password 0003; 

Replace the battery:When the battery symbol in the bottom left corner of the screen flashes, it indicates that the battery

 is low in power and the battery should be replaced in time;

steps:The battery compartment can be opened by rotating the back cover anticlockwise. After replacing the battery, close 

the back cover and turn clockwise to lock the back cover to achieve waterproof effect; 

After-sales service 

1.  All orders of our products are guaranteed for one year;

2. If the product fails within the warranty period, it is a quality problem detected by the company, and the company shall

bear all the maintenance costs; 

3. Failure to follow this manual or disassemble of the product, resulting in damage to the components or pressure diaphragm,

is not covered by the product warranty. 

4. Please contact our company to confirm the repair after product failure. Please attach the following information: 

a. Product failure phenomenon;

b. Description of the product using site environment;

c. Delivery address and contact information;

Data communication format:

#define DATA_SIZE_MAX           10 // Datapool size

typedef struct

{

uint8_t DataLength; // Information frame size

uint8_t     Dataserial;           // the total message sent

uint8_t DataUsed; // data pool effective data volume

int16_t Pressure[DATA_SIZE_MAX]; // Pressure value data pool

uint8_t Dot; // decimal point

uint16_t Unit; // Unit

uint16_t BatV; // Battery voltage

uint8_t Status; // Sensor and dry contact status

uint16_t CollectionInterval; // sensor sampling rate,1-9999s

uint16_t UploadInterval; // upload interval,1-9999min

uint16_t AlmCollectionInterval; // collection rate in alarm state,1-9999s

uint16_t AlmUploadInterval;       // upload rate when alarming, 1-9999min

int16_t UploadHigh; // high alarm threshold, -1999~9999

int16_t   UploadLow; // low alarm threshold, -1999~9999

uint8_t UploadThresholdMode; // alarm mode

uint8_t UploadInvert; // alarm NO/NC

uint8_t UploadVerify; // sensor alarm confirmation times

uint8_t DigiInputVerify; // dry contact alarm confirmation times

int8_t rss; // wireless signal strength

uint16_t crc; // communication CRC check code

} SmartInstrumentData;

Unit : MPa,kPa,Pa,BAR,PSI,kgfcm2,kgfm2,℃,℉,mm,cm,m,mV,V,mA,A,blank

（0~16 in return, on behalf of MPa~blank）

Dot : "3.000", " 2.00", "  1.0", "   0"

（3~0 three decimal placed to no decimal places）

Status : 0x01, sensor fault ;0x02,1#dry contact; 0x04,2#dry contact。

UploadThresholdMode:
// 0: High and low alarm >UploadHigh action， <UploadLow return

// 1: scope of alarm， >UploadLow And<UploadHigh action， return
// 2: Single point high alarm， >UploadHigh action， return
// 3: Single low alarm， <UploadHigh action， return

UploadInvert
// when UploadInvert = 1，Actions and returns need to be understood in

reverse( NO/NC)

Downlink data format:

For example: (Command in hexadecimal) Change machine# 0002:

1. Change the upload time to 10 minutes: Write 00 02 A1 00 0A;

2. If a negative number is entered, the data is signed integer,

Example: To input a low level alarm -5; Actual input FFFB; Input: 00 02 A4 FF FB