ØUltra-low power design

ØInline cellular modem

ØAutomatically transfer data to mailbox or FTP

ØSupports vibrating sensor

ØSupports Carlson, photoelectric level and LVDT displacement sensors

ØScalable up to 960 analog channels

Software Features

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 via a network cable, USB data cable or wireless

ØIntuitive graphical interface

ØSimple setting interface for users of all levels

ØReal-time and historical data can be viewed

ØYou can display data with icons, bar charts, dials, and waveform charts

Application areas

Landslide treatment, dam wall monitoring, underground continuous wall monitoring, mining exploration, tunnel excavation, pile monitoring, etc.

System Introduction

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, USB or USB 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 (12Vdc 1A);

Average power loss

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

Built-in Modem

Features

Alarm: Send emails or short messages;

Data: Send data to a specified mailbox or FTP server;

Remote access: connect to dEX software or command panel;

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

Network and frequency

United States Regions: EDGE, GPRS, GSM, CSD;

Other regions around the world: EDGE, GPRS, GSM, WCDMA, HSUPA, HSDPA;

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

Basic Features

Digital shell: zinc-aluminum alloy;

Ruler     Inch: 300 x 137 x 65mm;

Weight   Quantity: 2.5kg;

Operating temperature: -30℃ to 70℃;

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

Note: Low and high temperature environments will reduce battery life, and the operating temperature of the LCD display is -15℃ to 50℃.

Simulation channel

The DT85GM has 16 analog channels, which can be expanded to up to 320 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: 48 (up to 960 expansion);

Two-wire differential channels: 32 (up to 640 expansion);

Three-wire or four-wire differential channels: 16 (up to 320 expansion);

Note: The extension requires the configuration of the CEM20 module, which contains 20 analog channels.

Basic input range

The basic input voltage, current, resistance and frequency range that the DT85GM can measure is as follows:

Note: The data collector has the function of automatically changing the range and can be switched within three ranges.

The basic input voltage, current, resistance and frequency accuracy that the DT85GM 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 ±30V 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 DT85GM 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;

Vibration line

Frequency range: 500 to 5KHz;

Coil resistance: 50 to 200Ω;

Simulation method: single pulse pluck;

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

Digital Channel

Digital input/output

8 two-way channels

Input type: 8 logic levels (maximum 20/30V);

Output type: 4 field effect transistors (maximum: 30V, 100mA), 4 logic outputs;

Relay output

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

Counting channel

Low speed counting

8-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

7 high-speed or 3 phase encoder inputs

Model: 32bit;

Maximum counting rate: 100kHz;

Serial Channel

SDI-12

Four SDI-12 channels shared with digital channels, each SDI-12 channel can be connected to 10 SDI-12 sensors;

Compute channel

The computing channel can perform arithmetic, trigonometric functions, correlation, logic and statistical analysis of data from analog channels, digital channels or serial channels collected by the data collector.

Call the police

Conditions: below, above, within or outside the range;

Delay: optional alarm response time;

Action: Digital output, pass information or execute any datataker command.

Data collection list

Number of schedules: maximum 11;

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

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;

Protocol: TCP/IP;

USBport

Panel: USB1.1;

Protocol: ASCII command or TCP/IP;

Serial sensor port

Panels: RS232, RS422m, RS485;

Speed: 300 to 115200 baud rate;

Flow control: Hardware (RTS/CTS);

Software (XON/XOFF): None

Handshake protocol: DCD, DSR, DTR, RTS, CTS;

Network Services (TCP/IP)

Use network cable port or built-in modem module

Command panel: Enter the ASCII command panel of DT85GM 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;

Modbus client (main control): read data from the modbus device or write data to the modbus device;

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

FTP client: Automatically download data to the FTP server.

Email client: sends data and warning information from the data collector through mail;

DDNS client: Use Dynamic DNS to access the data collector