Laurel Electronics for Digital Panel Meters, Counters, Timers, Transmitters, Digital Displays

Digital Panel Meters - Counters - Timers
DIN Rail Transmitters - Large Digit Displays

    

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Totalizer for 0-1 mA, 4-20 mA
or 0-10V Signals
4-20 mA Current Transmitter
 Scalable for flow rate or total flow.
DIN Rail mounted, digitally programmable.

Features

Standard Main Board

  • Isolated 4-20 mA or 0-10V transmitter output, selectable.
  • Output tracks rate or total.
  • 0-1 mA, 4-20 mA or 0-10V process signal input.
  • Output accuracy maintained for narrow or wide spans.
  • Selectable square root for differential flow.
  • 5V, 10 V or 15V dc excitation output to power sensors.
  • Output resolution: 0.025% of span (12 bits).
  • Output accuracy: ±0.05% of span.
  • Output update rate: 25/sec.
  • DIN rail mount package only 22.5 mm thick.
  • Detachable screw clamp plug connectors.
  • Easy setup using PC-based Instrument Setup Software.
  • Optional dual solid state relays for alarm or control.

Extended Main Board

  • All capabilities of the Standard Main Board, plus:
  • Custom curve linearization.
  • Time based on rate (1/rate).
 		4-20 mA Current Transmitter and Totalizer for 0-1 mA, 4-20 mA and 0-10V Signals

CE Mark       RoHS Mark

Description

Laureate 4-20 mA output, process signal input totalizing transmitters accept 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.

The process transmitters convert the full-scale 0-1 mA, 4-20 mA or 0-10 V analog input signal to a frequency of 10-110 kHz, which is converted internally to a 6-digit rate reading rate using inverse period timing, and from there to the analog transmitter output. The analog output is accurate to ±0.05% of output span, as determined by an ultra-linear 12-bit (4096 step) digital-to-analog converter (DAC). The output update rate is a fast 25/sec. Output isolation from signal and power grounds is provided by a separate on-board power supply, which can drive 20 mA into a 500 ohm load for 10V compliance. Output isolation eliminates problems caused by ground loops. In addition to the 4-20 mA output that would typically be used for signal transmission in an industrial environment, a 0-10V analog output is selectable.

Transmitter programming is via a three-terminal RS-232 port using Laurel's PC-based Instrument Setup Software. This software can be downloaded from this website at no charge. The required transmitter-to-PC interface cable is available from Laurel (P/N CBL03).

The transmitters are housed in a DIN rail case that is only 22.5 mm (0.89") thick. Signal connections are via detachable screw clamp plug connectors.

Specifications
 Laureate 4-20 mA Transmitters
Analog Input Rate Transmitter & Totalizer

Analog Input 0-1 mA 4-20 mA 0-10 V
Input resistance
Max current or voltage		 182 ohms
37 mA		 9 ohms
160 mA		 1 Mohm
600 V
Input Resolution
Span Tempco
Zero Tempco
Accuracy at 25°C
Read Rate

6 digits
±0.0025% R/°C
±0.0005 FS/°C
±0.005% FS ±1 count
25/sec (typical)
Analog Output
Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Update Rate
Output Isolation		 4-20 mA and  0-10 Vdc (selectable)
10V ( 0-500 ohm load )
2 mA ( 5 kOhm load )
12 bits (4,096 steps)
±0.05% of output span
25/sec
250V rms working, 2.3 kV rms per 1 minute test
Transducer Excitation Output (standard)
Jumper Selection 1
Jumper Selection 2
Jumper Selection 3		 10V @ 60 mA, isolated to 50V from signal ground
5V @ 50 mA, isolated to 50V from signal ground
15V @ 60 mA, non-isolated
Dual Relay Output (optional)
Relay Type
Load rating		 Two solid state relays, SPST, normally open, Form A
120 mA at 130 Vac or 170 Vdc, 28 ohms series resistance.
Power Input
Standard power
Low power option
Frequency
Power Isolation		 95-240V AC ±10% or 90-300V DC
12-30V AC or 10-48V DC
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test.
Mechanical
Case Dimensions
Case Mounting
Electrical Connections		 120 x 101 x 22.5 mm
35 mm rail per DIN EN 50022
Detachable screw clamp plug connectors
Environmental
Operating Temperature
Storage Temperature
Relative Humidity		 0°C to 70°C
-40°C to 85°C
95% at 40°C, non-condensing

Pinout
 Laureate 4-20 mA Transmitters
Analog Input Rate Transmitter & Totalizer
(shown with optional dual relay output)

Pinout, 4-20 mA Current Transmitter and Totalizer for 0-1 mA, 4-20 mA and 0-10V Signals

  DC & Externally Powered Process Transmitter
  

Pinout, 4-20 mA Current Transmitter and Totalizer for 0-1 mA, 4-20 mA and 0-10V Signals
    Transmitter Powering Two Sensors

Ordering Guide
 Laureate 4-20 mA Transmitters
Analog Input Rate Transmitter & Totalizer

Create a model number in this format: TA202VF3. This is for a 4-20 mA transmitter, Standard main board, 95-240 Vac power, isolated dual solid state relays, and 0-10V process signal conditioner. Includes detachable screw clamp connectors.
 
Transmitter
Type		 TA    Laureate 4-20 mA Transmitter. $235
Main Board 6  Standard Main Board.
8  Extended Main Board
With Standard Main Board: Rate, square root of rate, or totalized rate from differential pressure flow transducers with a DC output.
With Extended Main Board: Above plus linearization of nonlinear inputs, batch operation, 1/rate (time). 		NC
$40
Power 0  Isolated 95-240 Vac & 90-300 Vdc
1  Isolated 12-30 Vac & 10-48 Vdc.		 NC
$30
Setpoint
Output		 0  None.
2  Isolated Dual Solid State Relays.		 NC
$30
Input Type Voltage-to-Frequency Converter
VF1  V-to-F Converter, 4-20 mA.
VF2  V-to-F Converter, 0-1 mA.
VF3  V-to-F Converter, 0-10V.
In the write-in field of your invoice, specify min input, min reading; max input, max reading.		  
NC
Accessories CBL03  RS-232 cable, TA to computer.
BL02    USB to RS-232 cable adapter.		 $19
$39
 
Laurel Electronics domestic orders Order from distributors for shipment to USA or Canada.
Laurel Electronics international orders Order online for international shipment.

 

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Laurel Electronics, Inc.
Industrial Instrumentation & Displays
3183-G Airway Avenue
Costa Mesa, CA 92626, USA
Phone: (714) 434-6131
Fax:     (714) 434-3766

  
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