The following shows the relevant parameter description and picture information of MTL831C analog transmitter

It provides valuable reference for you to purchase MTL831C analog transmitter

MTL831C analog transmitter can transmit multiple hazardous area inputs

The signal is sent to the safe area through the data highway composed of a single shielded twisted pair.

It is intrinsically safe, so it can be installed in Zone 0 hazardous area

MTL831C can monitor up to 16 inputs from THC or millivolt power supply, or 2, 3 or 4 wire RTD or potentiometer.

A data highway is provided, which can be up to 2km, depending on the application, cable and (noise) environment. It is strongly recommended to use twisted pair for shielding.

At the other end of the data highway, the MTL838C receiver will transmit information from the MTL831C. One or two MTL831C may be

Connect to a single MTL838C. MTL838C provides * Modbus ® Output representation of serial data input and status information.

When the MTL831C transmitter is installed in a dangerous area, the data highway must be installed in a safe area by.

*Modbus ® It is a registered trademark of Schneider Automation Co., Ltd.

2 Start

The installation of MTL831C multiplexer transmitter is divided into three main topics.

• Mechanical installation - how to install MTL831C and how to install it

Installed in the housing.

• Electrical connection - sensor and highway connection. If the unit is installed in our enclosure, it details any special wiring arrangement.

• Configuration - Configure the address using the jumper provided by the user.

Other configurations are via Modbus ® Link or PC software.

notes

New users may find that the indoor test area is familiar before installation on site.

The connecting terminals are along the edge of the analog transmitter. These are

It is divided into input sensor terminals (1 to 16), address terminals (A, S) and

Data highway terminals (+, S, -), as shown below.

5.1 Address

Keep these two pins (A, S) open and set the address of MTL831C to "1". A.

The jumper on these two pins sets the address to "2". Any item is valid for the system

Only one MTL831C is connected to MTL838C. When two MTL831C

When connected to a single MTL838C, they must be uniquely addressed. If they are

Only one of the same addresses will communicate with MTL838C. Address impact

Data can be seen in the PC software. What data is available on the RS485 port

Address PC software Modbus port A or BLLMUX emulation

1MTL831C # 1 tab Channel 1-16 Link 1, Channel 1-16

2MTL831C # 2 Tab Channel 17-32 Link 2, Channel 1-16

MTL838C/MTL831C system provides thermocouple burning detection.

This is done by periodically measuring the resistance of the thermocouple and comparing it with the initial measurement. If the resistance increases by more than 50 ohms, there is a warning in the sensor status (the reading is still available).

For more information, see the MTL838C receiver's description. Here is

Event for locking the initial resistance measurement:

• MTL831C is powered on (30 seconds after the initial resistance measurement is locked).

• The channel configured as THC is opened for at least 1.3 seconds and then closed (this is to reset the initial value when replacing THC).

• The channel not configured as THC is changed to THC. This configuration change will come from PC software or Modbus.

5.7 Mixed input can be in 16 input channels.

As shown in the connection diagram above, properly connect different sensors

Unit coverage. 5.8 Data highway

The data highway connection is also the DC power supply of MTL831C. It is important that the wiring polarity on the "+" and "-" terminals is correct. A Shielded twisted pair is recommended. The "S" terminal is connected to the cable shield and is not connected inside MTL831C. 5.9 Transmission distance

The maximum data highway length depends on two key factors: the quality environment of the cable used

Generally, users may expect: IS application - 1km, non-IS application - 2km.

The shorter distance of IS application is due to the voltage drop of current

The limit resistor in the MTL5553/MTL5053IS isolator may also be subject to the inductance and capacitance of the data highway cable required by the is cable

Parameter calculation. (See IEC/EN60079-14 for details).

We recommend using the 16 # Foundation fieldbus cable

Check to meet the FF standard of data highway cable. This will help ensure that the maximum length is achieved through successful communication in the presence of noise.

In addition, do not lay the data highway cable, VFD or motor driven by VFD near or parallel to the high-voltage line, because they will cause interference and communication.

5.10IS application

For IS applications, the data highway connection must pass through the current isolator, so the MTL5553/MTL5053 isolator is connected online in a safe area (see Figure x).

The - and+terminals of the data superhighway shall be connected to the corresponding safe area. For detailed instructions, see the ATEX and IECEx information section

MTL831CMTL838CMTL5053EATON transmission module related article recommendation

Eaton, a power management company, has launched a new 830m series multiplexer for temperature measurement applications in hazardous areas in Zone 0, aiming to improve the shape to minimize manual wiring and simplify installation and maintenance, and make them comply with RoHS directive standards

The 830m series multiplexer avoids the need to isolate each instrument loop, and reduces the cost of installation and wiring by up to 50% by transmitting the input of multiple temperature sensors in hazardous areas on a single twisted pair data highway. The cost can be further saved by reducing the number of inputs, cabinet space and weight of the control system.

MTL831C analog transmitter MTL831C fieldbus network multiplexer transmitter arrived

The MTL831C multiplexer transmitter is usually located in a hazardous area and is usually installed near the field instrument in an IP65 rated enclosure. It supports thermocouple, RTD and mV analog sensor inputs. The compatible safety area MTL838C receiver converts the information transmitted from MTL831C through the data highway, and provides serial Honeywell LLMUX or Modbus output with status information to feed to the host PLC, PC or DCS controller.

The single data highway cable is a pair of simple twisted pairs or a pair of wires in the intrinsically safe (IS) multi-core cable, which supports one-kilometer communication between the safe area and the dangerous area, and supplies power to the transmitter.

MTL831C analog transmitter MTL831C fieldbus network multiplexer transmitter arrived

"As an important component in the application of temperature measurement in hazardous areas, our 830m series multiplexers reduce the installation time and cost of intrinsically safe hazardous area wiring," said Niaz Ahmed, manager of Eaton's by-product line.

"We have invested in the development of the MTL830C multiplexer series to support the large temperature multiplexers we have installed worldwide. This allows 830b metric tons of installation to be migrated to the MTL831C and MTL838C products, while retaining the same sensor, wiring and control system interfaces," Ahmed added.

The multiplexer system is designed to convey the status of up to 32 inputs, reducing the number of hazardous area wiring pairs from 32 to 1. By eliminating the long-distance operation of expensive thermocouple compensation cables from hazardous areas to safe areas, this saves installation time and further reduces costs.

MTL831C analog transmitter MTL831C fieldbus network multiplexer transmitter arrived

MTL831C analog transmitter can transmit input signals from multiple hazardous areas to safe areas along the data highway composed of single-shielded twisted pair. It is intrinsically safe, so it can be installed in Zone 0 hazardous area or hazardous location.

MTL831C can monitor up to 16 inputs from THC or millivolt power supply or 2, 3 or 4 wire RTD or potentiometer. According to the application, cable and (noise) environment, a data highway is provided, which can transmit signal and power over a distance of up to 2km. Shielded twisted pair is strongly recommended. At the other end of the data highway, the MTL838C receiver translates the information transmitted from the MTL831C. One or two MTL831Cs can be connected to a single MTL838C.

MTL831C analog transmitter MTL831C fieldbus network multiplexer transmitter arrived

MTL838C provides input * Modbus ® Serial data output representation and status information. When the MTL831C transmitter is installed in a dangerous area, the data highway must be protected by the MTL5553/MTL5053 isolator/power supply installed in a safe area.

MTL831C analog transmitter MTL831C fieldbus network multiplexer transmitter arrived

The MTL830 series multiplexer with Modbus output does not need to isolate each instrument loop. By transmitting the status of multiple hazardous area sensors through the dual redundant data highway, the cost of installation and wiring is reduced by 50%.

Features of MTL831C analog transmitter MTL831C fieldbus network multiplexer transmitter arrived

-Save the cost of installing cables in hazardous areas

-Reduce installation time, space and weight

-Use the status reporting system to quickly detect problems

-Sensor fault detection and failsafe drive options

-Serial data output to host control system

-AI to Modbus controller

-Redundant data highway facilities

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