DataRTU H81 telemetry terminal

DataRTU H81 telemetry terminal

1. Product Description

DataRTU H81 telemetry terminal(hereinafter referred to asTelemetry terminal）It is a terminal product developed by our company after years of practical experience and engineering application, which integrates data acquisition and wireless communication to meet market demand. This product can simultaneously collect multiple pulse quantities, switch quantities, and analog quantities. The product is based on the GSM/GPRS communication platform of China Mobile or China Unicom, and has the advantages of not being limited by geography, stability, reliability, and low cost. Equipped with switch quantity alarm function. A communication interface friendly to regular mobile phones, where all data parameters can be queried and set using the phone.

2. Functional features

● The system provides various input and output interface resources:

a. 2-channel 12 bit analog acquisition, internal resistance of 250 ohms, standard 4-20mA (1-5VDC) input, can also be input freely within the 20mA range, and the range and zero point can be set arbitrarily.

b. 6 pulse/switch inputs, pulse and switch inputs are set through software.

c. One 24VDC (I<45mA) output provides power for small primary instruments such as pressure transmitters, and also has this function when powered by batteries.

d. 1 independent RS232/485 port, which can be used for setting parameters and direct reading of instrument data, such as flow meter data direct reading (flow meters must provide standard RS232/485 interfaces and protocols for reading data).

● Alarm functions: pulse quantity alarm, switch status change alarm, analog upper and lower limit alarm (such as water supply network pressure alarm), flow alarm (such as instantaneous flow over and under alarm), signal alarm, humidity alarm, battery voltage alarm, etc., and notify the responsible person in the form of SMS and. Four alarms can be set at the same time.

● The system adopts the GSM/GPRS communication platform of China Mobile or China Unicom, which has the advantages of not being limited by geography, stability, reliability, and low cost.

● The data is saved at regular intervals (1 minute to 2 hours), with a total of 215092 records saved. Users can query historical data within the validity period in a fuzzy manner.

● Data is uploaded at regular intervals, allowing different customers to set up four main stations and two IP (GPRS) addresses simultaneously. The upload time interval can be independently set (1 minute to 1 day).

● Real time data query,

● The system has intelligent error correction capability, and will prompt for errors in the number of digits, range, and format settings, as well as indicate the erroneous instructions.

● To save operating costs, a text message contains data from multiple time periods. Example: When only collecting accumulated traffic from one channel, sending one SMS per day can contain data every half hour.

● The automatic data resend function means that when the data was not successfully sent last time, if it is successfully sent next time, the data that was not successfully sent last time will be automatically resent, and it can be resent within the valid storage period of the data.

● Data LCD display, with keyboard operation, only for query purposes.

● Interacting with regular mobile phones through SMS and password verification, all data parameters can be set through SMS.

● Real time monitoring of battery voltage.

● SMS sending counter, convenient for users to understand their phone bill balance.

● The shell adopts a fully sealed waterproof design, which can adapt to outdoor dew and water immersion and meet IP68 standards.

3. Technical specifications

● Supports GSM900MHz and EGSM1800MHz dual band, using GSM Phase2/2+standard.

● Power supply voltage: rechargeable battery (DC10.8V), solar panel.

● Communication method: GSM Short Message (SMS)/GPRS.

● Passive pulse (effective resistance<10K ohms, ineffective resistance>1M ohms);

● Active pulse (effective voltage>5V, ineffective voltage<0.5V).

● Analog internal resistance of 250 ohms, standard 4-20mA (1-5VDC) input, 0-20mA (0-5VDC) is also acceptable.

● RS232/485: default 19200-8-N-1, used for direct reading, depending on the secondary instrument, program modification is required.

● Waterproof and explosion-proof: dIIBT4.

● Size 200 * 120 * 80 (excluding antenna and mounting components).

● The working environment temperature is -25~+70 º C.

● Storage temperature -40~+85 º C.

● Relative humidity of 95% (no condensation).

The two lines of payment for salary and project funds are mainly used to separate the labor costs in the project, manage them in a dedicated account, and prevent misappropriation, "said the person in charge of the Zhejiang Human Resources and Social Security Department." Real name management is mainly aimed at the chaotic situation of subcontracting and personnel mobility in the construction industry, and aims to clarify the salary amount and responsible parties through real name attendance

The person in charge stated that the promotion of the two systems has a significant effect on standardizing the payment of wages for engineering projects. However, at present, there are still certain obstacles to the promotion of the system, and further observation is needed.