Technical parameters

1. Display mode: No display
2. The test medium: Liquid or gas compatible with material
3. Scale range:-1.5~ 0.5KPa Inner 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:G1/2
15. Protection grade:IP68

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

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           1E // 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 is in hexadecimal, 4G product is a string):

1. Modify a single parameter: change the upload time to 10 minutes: write A1 00 0A;

2. Modify multiple parameters simultaneously: upload time is 10 minutes, decimal point is 2: write A1 00 0A AC 00 02;

3. If a negative number is input, the data will be Symbolic shaping. For example, to input a low level alarm of -5; Actual input FFFB;

Input: A4 FF FB;"