ØInline cellular modem

ØUltra-low power consumption design

ØSupport SDI-12 input

ØAutomatically transfer data to FTP

Ø6 analog channel inputs

ØModbus SCADA connection

ØCan control 12V&5V power output

ØBuilt-in software without installation and can be used on Windows, Mac and Linux operating systems

ØThe instrument is set up through the web page

ØConnect to the instrument through network cable and USB data cable

ØIntuitive graphical interface

ØSimple setting interface for users of all levels

ØReal-time and historical data can be viewed

Application areas

Display and keys

Type: LCD display, 2 lines 16 characters, background light;

Display functions: channel data, alarm information, system status;

Key: View display information and operation functions through 6 keys;

Signal LED lights: 4 signal lights, indicating sampling, hard disk, alarm information and power supply respectively;

Software version upgrade

Software upgrades via network cable or USB flash drive;

clock

Basic resolution: 200µs;

Accuracy: ±1 min per year (in an environment with a value of 40 ℃), ±4 min per year (in an environment with a value of -40 ℃ to 0 ℃, 40 ℃ to 70 ℃);

powered by

External power supply range: 10 to 30Vdc;

Peak power: 12W;

Average power loss

The relationship between sampling frequency and power consumption when using 12Vdc external power supply is as follows:

Basic Features

Digital shell: zinc-aluminum alloy;

Ruler    Inch: 180 x 137 x 65mm;

Weight   Quantity: 0.9kg;

Operating temperature: -30℃ to 70℃;

Operating humidity:<85%, water vapor does not condense;

Note: Low and high temperature environments will reduce battery life.LCDThe operating temperature of the display is-15℃ to50℃.

built-inmodem

Report       Alarm: Send emails or SMS messages;

Data: Send data to a mailbox or FTP server;

Remote access: Connect to dEX or command interface;

SIM panel: SIM card interface (1.8V/3V);

Network: EDGE, GPRS, GSM, WCDMA, HSUPA, HSDPA

Frequency    Rate: EDGE/GPRS/GSM: 850/900/1800/1900 MHz; WCDMA/HSUPA/HSDPA: 850/1900/2100 MHz

The DT82EM has 2 analog channels, each analog channel can be connected to a three-wire or four-wire input, two independent two-wire inputs, and three two-wire single-ended inputs.

The specific number of accesses is as follows:

Two-wire single-ended channels: 6;

Two-wire differential channels: 4;

Three-wire or four-wire differential channels: 2;

Basic input range

The basic input voltage, current, resistance and frequency range that the DT82EM can measure is as follows:

Note: The data collector has the automatic switching range function, which can be switched within three ranges.

The basic input voltage, current, resistance and frequency accuracy that the DT82E can measure is as follows:

Note: Accuracy is relative to full scale.

Sampling information

For measurement accuracy and suppression of the effects of noise, a row frequency period greater than 50/60Hz is integrated.

Maximum sampling speed: 25Hz;

Effective resolution: 18 bits;

Linearity: 0.01%;

Common mode suppression: >90dB;

WireSexual chain mode suppression: >35dB.

enter

Channel isolation: 100V (relay on);

Isolation of analog components: 100V (optical isolation);

Input impedance: 100KΩ, >100MΩ;

Common mode range: ±3.5V, or ±35V in the 30V range.

Sensor excitation

Analog channel excitation: 250µA or 2.5mA precision current source, 4.5V voltage, can switch external power supply;

General Excitation: Can turn on and close 12V power supply (maximum 150mA) to power sensors and accessories, and can turn on and close 5V power supply (maximum 25mA) to power analog channels.

Analog sensors

Several common sensors are introduced, but the sensors that the DT82E can connect to are not limited to the following types.

Thermocouple

Thermocouple types: B, C, D, E, G, J, K, N, R, S, T-type;

Thermocouple calibration: ITS-90;

RT DS

RTDs material types: Pt, Ni, Cu;

Resistance range: 10Ω to 10KΩ;

Thermistor

Thermistor type: YSI400xx series;

Resistance range: <10kΩ

Note 1: Other thermistor types are also supported.

Note 2: The measurement range can be expanded by parallel resistance.

Single-chip temperature sensor

Support types: LM34-60, AD590\592, TMPxx, LM135\235\335;

Strainer and bridge sensor

Configuration: 1/4 bridge, 1/2 bridge and full bridge;

Excitation: voltage or current;

4-20MACurrent ring

Internal 100Ω or external shunt resistor.

Digital input/Output

4 bidirectional channels

Input type: 4 logic levels (maximum 20/30V);

Output type: 3 field effect transistors (maximum: 30V, 100mA), 1 logic output;

Relay output

1 direct-connected self-locking relay (maximum: 30Vdc, 1A).

Counting channel

Low speed counting

4-channel counter, shared with digital channels; low-speed counting function does not work in sleep mode.

Model: 32bit;

Maximum counting rate: 10Hz;

Special counting input

4 high-speed inputs

Model: 32bit;

Maximum counting rate: 100kHz;

Input type: 2 logic level inputs (maximum ±30V). 2 magnetic induction (maximum ±10V) sensitivity inputs (10mV).

Serial Channel

SDI-12

There is 1 SDI-12 channel shared with digital channels, and each SDI-12 channel can be connected to more than 10 SDI-12 sensors;

Compute channel

Call the police

Delay: optional alarm response time;

Data collection list

Schedule sampling interval: Each schedule has a separate sampling interval, which can be selected from 10ms to days.

Data storage

Built-in storage

Storage space: 128MB, about 10,000,000 data can be stored (large space memory can be customized);

External storage device

USB1.1, USB2.0 and other USB flash memory devices.

Communication panel

Network cable port

Panel: 10Mbps;

Network Services (TCP/IP)

Use a network cable port or built-inmodem.

Command panel: Enter the ASCII command panel of DT82E through TCP/IP;

Network server: access the status of existing data and data acquisition through web pages, set the user's characteristic display interface, and download CSV format data;

Modbus server (controlled end): obtain data and data acquisition status through the Modbus client;

FTP server: Obtain stored data through a browser or FTP client;

FTP client: data is automatically transferred to the FTP server;

Email client: receives data and warning information from the data collector;

DDNS client: Has suffered from dynamic DNS remote access data collector