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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AC Phase Angle Input
4-20 mA Current Transmitter
 For angular phase offset in degrees of AC waveforms.
DIN Rail mounted, digitally programmable.

4-20 mA Current Transmitter, Phase Angle Input

 CE Mark      RoHS Mark

Features

  • Isolated 4-20 mA or 0-10V transmitter outputs, selectable.
  • Transmits phase angle between two AC waveshapes of similar period.
  • Frequency from .005 Hz to 10 kHz.
  • Resolution of 1º, 0.1º or 0.01º.
  • .01% accuracy at AC line frequency.
  • Internal conversion of input to six-digit reading:
    - Digital span adjust from 0 to ±999,999.
    - Digital zero adjust from -999,999 to +999,999.
  • Inputs from NPN or PNP proximity switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC inputs up to 250 Vac.
  • Triggers on positive or negative pulse edges.
  • 5V, 10V or 15V dc excitation output to power sensors.
  • 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.

Description
  

Phase angle measurement by phase transmitter

The 4-20 mA output of Laureate AC phase angle transmitter indicates the lead or lag in degrees from 0º to 360º between two periodic signals having the same period. In the illustration to the left, phase angle is 360*P1/P. The signals are applied to the Channel A and B inputs of the Laureate dual-channel pulse input signal conditioner board.

Phase angle measurement is commonly used with AC power from 50 Hz to 400 Hz. Phase angle needs to be set to zero to synchronize AC generators. It also applies to the triggering of SCRs and Triacs for power control. The phase angle between AC current and voltage determines power factor. The Laureate phase angle meter and transmitter provide exceptionally fast response and high accuracy for low frequencies, such as AC line frequency.

Signal conditioner board used with Laureate Phase TransmitterPhase angle measurement with the Laureate phase angle meter or phase angle transmitter requires that two signals with identical periods be applied to Channels A and B. A display from -180º to +180º is obtained by timing the rising edge of one channel and the falling edge of the other channel, and programming a 180º offset. A resolution of 1º, 0.1º or 0.01º is selectable. Accuracy is 0.01% up to 100 Hz, 0.1% at 1 kHz, and 1% at 10 kHz.

Phase angle is determined by timing crystal clock pulses over a specified gate time which is selectable from 10 ms to 199.99 s. By selecting the minimum gate time of 10 ms, the update rate can be up to 20/s for 50/60 Hz AC line frequency. Improved accuracy is obtained by making the gate time long enough so that multiple cycles can be averaged.

Exceptional Accuracy and Stability

The 4-20 mA analog output is generated by an ultra-linear 12-bit (4096 step) digital-to-analog convert (DAC) whose output span can be adjusted from 0 to ±999,999 counts and zero can be adjusted from -999,999 to +999,999 counts. The analog output has a rated accuracy of ±0.05% of output span. The output update rate for a minimum timing interval is 20/sec at AC line frequencies.

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 Transmitter, AC Phase Angle Input

Phase Angle Mode
Item Transmitted
Transmitted Units
Frequency Range
Accuracy
Maximum Timing Interval

Phase angle difference between two waves of same period
1°, 0.1°, 0.01°
.005 Hz to 10 kHz
.01°, .005 Hz to 100 Hz, .1° at 1 kHz, 1° at 10 kHz
200 s
Analog Output
Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Isolation		 0-20 mA or  0-10 Vdc (selectable)
10V ( 0-500 ohm load )
2 mA ( 5 kOhm load )
12 bits (4,096 steps)
±0.05% of output span
250V rms working, 2.3 kV rms per 1 minute test
Inputs
Types
  
Signal ground
Minimum Signal
Maximum Signal
Noise Filter
Contact Debounce

AC, pulses from NPN, PNP transistors, contact closures, magnetic pickups
Common ground for channels A & B
Nine ranges from (-12 to +12 mV) to (+1.25 to +2.1V).
250 Vac
1 MHz, 30 kHz, 250 Hz (selectable)
0, 3, 50 ms (selectable)
Update Rate
Conversion Interval
Gate Time
Time Before Zero Output

Gate time + 30 ms + 0-2 signal periods
Selectable 10 ms to 199.99 s
Selectable 10 ms to 199.99 s
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.
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
Protection		 0°C to 60°C
-40°C to 85°C
95% at 40°C, non-condensing
NEMA-4X (IP-65) when panel mounted

Applications

Using Laureate Meters, Counters or Transmitters to Synchronize Motor Generators

Using Laureate Meters, Counters or Transmitters to Synchronize Motor Generators

Synchronization of two motor generators requires that the two frequencies be identical, that the lines be in phase, and that the line voltages be close to each other. In this illustration, a single Laureate dual channel counter (or frequency transmitter) measures both frequencies to six-figure accuracy in a few line cycles. Another Laureate dual channel counter (or phase transmitter) measures phase angle to 0.1º resolution. Two Laureate AC RMS Voltmeters, which offer ranges of 200.00 V and 600.0 V, are used to display the two RMS voltage to 0.1% accuracy.

Pinout
 Laureate 4-20 mA Transmitter, AC Phase Angle Input
(shown with optional dual relay output)

Pinout, 4-20 mA Current Transmitter, Phase Angle Input

                                   Transmitter Powering a Single Sensor
  

Pinout, 4-20 mA Current Transmitter, Phase Angle Input

 Pinout, 4-20 mA Current Transmitter, Phase Angle Input
Transmitter Powering Two Sensors Transmitter with Active or Passive Sensors

Ordering Guide
 Laureate 4-20 mA Transmitter, AC Phase Angle Input

Create a model number in this format: TA802FR. This is for a 4-20 mA transmitter, Extended main board, 95-240 Vac power, isolated dual solid state relays, and dual channel pulse input signal conditioner. Includes detachable screw clamp connectors.
 
Transmitter
Type		 TA    Laureate 4-20 mA Transmitter. $210
Main Board 8  Extended Main Board (required for phase) $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 FR  Dual-Channel Pulse Input. NC
Accessories CBL03  RS-232 cable, TA to computer.
CBL02  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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