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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Phase Meter

Laureate™ Phase Angle Meter
For Angular Phase Offset in Degrees

Phase Meter
CE Mark   UL Mark RoHS Mark Made in California

Phase Meter

Standard Features

Product Links

Specs
Mechanical
Serial I/O options
Power options
Relay options
Analog output option
Meter manual
Serial manual
Modbus manual
Setup software
Pricing
  • Measures phase angle between two waveshapes of identical period.
  • Resolution of 1º, 0.1º or 0.01º
  • 0.01% accuracy at AC line frequency
  • Inputs from 12 mV p-p to 250 Vac
  • Trigger on positive or negative pulse edges.
  • Frequency from 0.005 Hz to 10 kHz
  • 6-digit red or green LED display
  • Isolated 5, 10 or 24 Vdc excitation output to power sensors.
  • Universal AC power, 85-264 Vac
  • External controls for reset, meter hold and decimal points
  • NEMA 4X, 1/8 DIN case
  • Certified to UL 61010C-1 (UL mark), EN 61010-1 (CE mark), and RoHS
    Options:
  • Low voltage power: 10-48 Vdc or 12-30 Vac
  • Dual relays: Form C contact or Form A solid state
  • Analog output: Isolated, 4-20 mA, 0-20 mA, 0-10V, -10 to +10V
  • Serial communications: RS232, RS485, Modbus RS485, USB, USB-to-RS485 converter

Phase Meter

Description

Phase angle measurement - phase meterPhase Angle Measurement

Phase angle indicates the lead or lag in degrees from
-180º to +180º between two periodic signals of the same period. In the illustration to the right, phase angle is 360*P1/P.

The Laureate phase angle meter provides exceptionally fast response and high accuracy at low frequencies such as AC line frequency. 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 measurement requires that two signals with identical periods be applied to Channels A and B. One of the signals is typically an AC voltage up to 250 Vac, and the other signals is the voltage developed across a current shunt driven by a 5A current transformer. Both signals need to be mutually isolated. For best accuracy, both signals should have the same amplitude which should be larger that 1V, and the trigger level should be set at near the zero crossing of each waveshape at 12 mV.

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 are averaged.

digital phase meterUniversal Pulse Signal Conditioner

The Laureate Phase Angle Meter uses the Extended counter main board and the FR dual-channel signal conditioner board, which is jumpered for AC signals from 12 mV to 250 Vac. Jumper and digital noise filter selections provide optimum operation for different noise conditions.

Other Features & Options

Plug-in isolated analog output, dual setpoint controller, and RS232/485 serial data I/O boards can upgrade the Laureate from a stand-alone monitor to system interface and control. The 1/8 DIN case of Laureate meters and counters meets NEMA 4X (IP-65) standards from the front for high pressure wash-down when panel mounted.

Phase Meter

Specifications

Phase Angle Mode
Item Displayed
Display Units
Frequency Range
Accuracy
Max 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

Display
Readout
Range
Indicators
6 LED digits, 7-segment, 14.2 mm (.56"), red or green
-999999 to +999999
Four LED lamps
Inputs
Types
Signal ground
Minimum Signal
Maximum Signal
Noise Filter

AC
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)

Update Rate
Conversion Interval
Gate Time

Gate time + 30 ms + 0-2 signal periods
Selectable 10 ms to 199.99 s

Power
Voltage, standard
Voltage, optional
Frequency
Power Isolation
85-264 Vac or 90-300 Vdc (DC operation not UL approved)
12-30 Vac or 10-48 Vdc
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
Analog Output (optional)
Output levels
Current compliance
Voltage compliance
Scaling
Resolution
Isolation
4-20 mA, 0-20 mA, 0-10V, -10 to +10V (jumper selectable)
2 mA at 10V ( > 5 kOhm load)
12V at 20 mA ( < 600 Ohm load)
Zero and full scale adjustable from -99999 to +99999
16 bits (0.0015% of full scale)
250V rms working, 2.3 kV rms per 1 min test
Dual Contact Relay Outputs (optional)
Relay Type
Load Rating
Isolation
Form C, SPDT
8A at 250 Vac or 24 Vdc
250V rms working, 2.3 kV rms per 1 min test
Dual Solid State Relay Outputs (optional)
Relay Type
Load Rating
Isolation
Form A, SPST, normally open
130 mA at 140 Vac or 180 Vdc
250V rms working, 2.3 kV rms per 1 min test
Serial Data I/O (optional)
Board Selections
Protocols
Data Rates
Digital Addresses
Isolation
RS232, RS485, Modbus RS485, USB, USB-to-RS485 converter
Modbus RTU, Modbus ASCII, simpler Laurel ASCII
300 to 19200 bps
247 (Modbus), 31 (Laurel ASCII),
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
Signal Connections
Phase meter pinout

Phase Meter

Applications

Using Laureate Meters and Counters to Synchronize Motor Generators

Using Laurel Meters and Counters to Synchronize Two 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 measures both frequencies to six-figure accuracy in a few line cycles. Another Laureate dual channel counter 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.

Phase Meter

Ordering Guide
Laureate™ Phase Angle Meter
 Click on the radio buttons to build a model number with pricing (shown below the Ordering Guide).

  Quantity
Main
Board
L7  Extended Main Board, Green LEDs
L8  Extended Main Board, Red LEDs
$270
$270
Note: Use of the Extended Main Board makes this counter also suitable for A-B time interval, stopwatch, frequency, rate, period, square root of rate, up or down total, arithmetic functions, simultaneous rate and total, duty cycle, batching, and custom curve linearization.  
Power Isolated 85-264 Vac
Isolated 12-30 Vac or 10-48 Vdc
NC
$30
Relay
Output
None.
Dual 8A Contact Relays.
Isolated Dual Solid State Relays.
NC
$80

$55
Analog
Output
None.
Isolated 0-20 mA & 0-10 V.
NC
$90
Digital
Interface
None.
Isolated RS-232
Isolated RS-485
Isolated Modbus RS-485
USB
USB-to-RS485 converter
NC
$60

$80

$90

$60

$100
Input
Type
FR  Dual-Channel Pulse Input Signal Conditioner  NC
Add-on
Options
EB  Extra bight red LED display
BL  Blank lens without button pads
CBL01  RJ11-to-DB9 cable
CBL02  USB-to-DB9 adapter
CBL05 
USB Cable, A to B
IPC 
Clear front panel cover sealed to NEMA 4X / IP65
BOX1 
NEMA-4X wall-mount enclosure with 1/8 DIN cutout
BOX2 
BOX1 plus IPC
$30
NC

$19

$39

$15

$40

$140

$180
 
Configured model number L70000FR
Configured price per model $270
Quantity 1
Extended price $270
 

 

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

  
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