Ethernet & 4-20 mA Output Transmitter and Totalizer for 0-1 mA, 4-20 mA or 0-10V Analog Proces Signals

Scalable to flow rate or total flow from process signals. DIN Rail mounted, digitally programmable.

Ethernet transmitter

Features

  • Ethernet Serial Data I/O, Modbus TCP or TDM ASCII protocol
  • 4-20 mA, 0-20 mA or 0-10V transmitter output, 16 bits, jumper selectable, isolated
  • Dual 120 mA solid state relays for alarm or control, isolated
  • 5V, 10V or 24V dc transducer excitation output, isolated
  • 0-1 mA, 4-20 mA or 0-10V process signal input, isolated
  • Converts signal input to a scaled rate or totalized rate
  • Selectable square root for differential flow
  • Analog output resolution 0.0015% of span (16 bits), accuracy ±0.02% of span
  • Digital span adjust from 0 to ±99,999, zero adjust from -99,999 to +99,999
  • Output accuracy maintained for narrow or wide spans
  • Universal 85-264 Vac / 90-300 Vdc or 10-48 Vdc / 12-32 Vac power
Description

The process signal input transmitter and totalizer accepts 0-1 mA, 4-20 mA or 0-10V signals from flow meters and other transducers, such as watt meters, to track rate or totalized rate.

  • With a Standard Main Board, the transmitter output can track rate (such as gallons per minute or watts) or totalized rate (such as gallons or kilowatt hours) whether the transducer output is linear or requires square root extraction (differential pressure flow transducers).
  • With an Extended Main Board, the transmitter can also perform custom curve linearization (provided by a curvilinear spline fit with up to 180 data points), display 1/ rate (such as the time it takes a conveyor to pass through an oven), and perform batch control for repetitive fill operations. Such applications typically make use of optional dual solid state relays, which are available as options. External reset of totals is provided by a special connector.
Signal Conditioner Board for  Analog Input Flow Rate Meter and Analog Flow Totalizer

A signal conditioner board converts the full-scale 0-1 mA, 4-20 mA or 0-10 V analog signal to a frequency of 10 kHz to 110 kHz. This frequency is determined by measuring period over a selected gate time (from 10 ms to 200 s) and taking the inverse of period. At the lowest frequency of 10 kHz and the minimum gate time of 10 ms, the transmitter is capable of 25 updates per second. Scaling is done mathematically. Totals are calculated as the product of rate and time in seconds regardless of the selected gate time. Totals are stored in nonvolatile memory in case of power loss.

Standard features of LTE transmitters include:

  • Ethernet I/O, isolated. Supported protocols are Modbus RTU and ASCII (tunneled via Modbus TCP) and TDM ASCII. The latter is simpler than the Modbus protocol and is recommended when all devices are s. Note that RS232 or RS485 data I/O in lieu of Ethernet is provided by LT Series transmitters.
  • 4-20 mA, 0-20 mA or 0-10V analog transmitter output, isolated, jumper-selectable and user scalable. All selections provide 16-bit (0.0015%) resolution of output span and 0.02% output accuracy of a reading from -99,999 to +99,999 counts that is also transmitted digitally. Output isolation from signal and power grounds eliminates potential ground loop problems. The supply can drive 20 mA into a 500 ohm (or lower) load for 10V compliance, or 10V into a 5K ohm (or higher) load for 2 mA compliance.
  • Dual solid state relays, isolated. Available for local alarm or control. Rated 120 mA at 130 Vac or 180 Vdc.
  • Universal 85-264 Vac power. Low-voltage 10-48 Vdc or 12-32 Vac power is optional.

Discovery and configuration of Ethernet Nodes is easily achieved with TDM's Node Manager Software, and the discovered transmitters can then be programmed using TDM's Instrument Setup Software. Both softwares run on a PC under MS Windows and can be downloaded from this website at no charge.

 Ethernet network by TD Micronic
Specifications
Ethernet & 4-20 mA Transmitter & Totalizer for 0-1 mA, 4-20 mA or 0-10V Process Signals
Analog Input 0-1 mA 4-20 mA 0-10 V
Input resistance 1.00 kΩ 50 Ω 1.01 MΩ
Max current or voltage 35 mA 70 mA 600 V
Input Resolution 6 digits
Span Tempco ±0.003% reading/°C
Zero Tempco ±0.003% FS/°C
Accuracy at 25°C ±0.01% FS ± 1 count
Read Rate 25/sec (typical)
Analog Output (standard)
Output Levels 4-20 mA and 0-10 Vdc (selectable)
Compliance, 4-20 mA 10V (0-500Ω load)
Compliance, 0-10V 2 mA (5 kΩ load)
Output Resolution 16 bits (65,536 steps)
Output Accuracy 0.02% of output span
Output Update Rate 25/sec
Output Isolation 250V rms working, 2.3 kV rms per 1 minute test
Ethernet Data I/O (standard)
Type 10/100 Base-T Ethernet per IEEE 802.3
Data Rates 300, 600, 1200, 2400, 4800, 9600, 19200 baud
Output Isolation 250V rms working, 2.3 kV rms per 1 min test
Serial Protocols Modbus TCP, Modbus RTU, Modbus ASCII, TDM ASCII
Modbus Compliance Modbus over Serial Line Specification V1.0 (2002)
Digital Addresses 247 for Modbus, 31 for TDM ASCII
Transducer Excitation Output (standard)
Jumper Selection 1 10V @ 60 mA, isolated to 50V from signal ground
Jumper Selection 2 5V @ 50 mA, isolated to 50V from signal ground
Jumper Selection 3 15V @ 60 mA, non-isolated
Dual Relay Output (standard)
Relay Type Two solid state relays, SPST, normally open, Form A
Load Rating 120 mA at 140 Vac or 180 Vdc
Power Input
Standard Power 85-264 Vac or 90-300 Vdc
Low Power Option 10-48 Vdc or 12-32 Vac
Power Frequency DC or 47-63 Hz
Power Isolation 250V rms working, 2.3 kV rms per 1 min test
Power Consumption 2W typical, 3W with max excitation output
Mechanical
Dimensions 129 x 104 x 22.5 mm case
Mounting 35 mm rail per DIN EN 50022
Electrical Connections Plug-in screw-clamp connectors
Environmental
Operating Temperature 0°C to 55°C
Storage Temperature -40°C to 85°C
Relative Humidity 95% at 40°C, non-condensing
Cooling Required Mount transmitters with ventilation holes at top and bottom. Leave 6 mm (1/4") between transmitters, or force air with a fan.
Pinout

Ethernet & 4-20 mA Transmitter & Totalizer for 0-1 mA, 4-20 mA or 0-10V Process Signals

LTE Ethernet Transmitter Pinout

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