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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Digital Panel Meters for Flow Rate,
Flow Total, Batch Control

 Product Selection Guide

Laureate Pulse Input Rate Meter, Model FR
 

6-digit scalable counter with dual pulse / AC inputs from turbine flow meters. Allows square root extraction, custom curve linearization, and display of rate or total. Dual channels allow addition or subtraction of two flow rates for net flow, or the ratio of two flow rates to control mixing operations. Includes isolated transducer excitation supply. Fast read rates with peak hold. Optional analog output, relays, and data I/O. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.
  

   Laurel Pulse Input Rate Meter
  

Laureate Process Meter, Model P
 

5-digit DC digital panel meter for analog signals such as 0-10 mA, 4-20 mA or 0-10 V. Programmable zero and span using three methods:
scale and offset, two-points, or system-level calibration using actual transducer signals for known readings. Fast read rates with peak hold. An Extended processor version allows custom curve linearization and rate from successive analog readings. Fast read rates with peak hold. Includes isolated transducer excitation supply. Optional analog output, relays, and data I/O. Five 0.56" (14.2 mm) high digits, 1/8 DIN case.
   

Laurel Process Input Digital Panel Meter
   

Laureate Process Totalizer, Model VF
 

This digital panel meter totalizes 0-1 mA, 4-20 mA or 0-10 V analog signals, for example to display totalized volume from the 4-20 mA analog signal of a flow meter transducer. Capabilities include zero and span adjustment, square root extraction from differential flow meter signals, custom curve linearization, and elapsed time based on rate (for example, the time it will take to fill a tank at the current flow rate. Optional data I/O and relays for alarm or control. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.
  

Laurel Process Totalizer Digital Panel Meter
  

Laureate Pulse Input Batch Controller, Model FR
 

The Extended Laureate with FR dual-channel signal conditioner accepts pulses from turbine flow meters and other transducers with a pulse output. Jumper selections provide optimum operation for different flow sensor types and noise conditions. Batch control is provided by three relays. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.
   
   Laurel Pulse Input Batch Controller
  
Laureate Analog Input Batch Controller, Model VF
 

The Extended Laureate with VF voltage-to-frequency signal conditioner accepts the 0-1 mA, 4-20 mA or 0-10 V process signal from a flow meter transducer. Jumper selections provide optimum operation for different flow sensor types and noise conditions. Batch control is provided by three relays. Six 0.56" (14.2 mm) high digits, 1/8 DIN case.
  
Laurel Analog Input Batch Controller
   
88-PRO Loop-Powered Digital Panel Meter
 

Scalable process meter powered by 1-5 mA, 4-20 mA or 10-50 mA current loop, with no need for external power. 3 1/2 LCD digits, 12.7 mm (0.50") digit height, 1/8 DIN case.
   
Loop-Powered Digital Panel Meter, Model 88-PRO
   
Junior Series Process Meter, Model P
 

Low-cost, screwdriver-adjusted, 3-1/2 digit panel meter indicator available for process signals (e.g., 4-20 mA, 0-10 V). Includes non-isolated transducer excitation supply. No control outputs. 3-1/2 digits, 0.56" (14.2 mm) digit height, 1/8 DIN case.
   

Junior Series Low-Cost Process Meter, Digital Panel Meter Model P
   

Grand Series "Large Digit" Displays, Models P & FR
 

5-digit large-digit displays with a digit height of 2.2" (57 mm), 4.0" (102 mm), 5.7" (144 mm) or 7.9" (200 mm) for long viewing distances. Available for process signals (Model P) or rate / frequency (Model FR). Scalable to engineering units. Includes non-isolated transducer excitation supply. Optional relays and data I/O. Choice of display brightness and cases for indoor or outdoor mounting.
   
Grand Series Large Digit Displays: Model P for process signals, Model FR for pulsed signals
   
Microminiature Digital Process Meter, Model M-35
 

Fits 22.5 x 45 mm cutout. Accepts 4-20 mA, 0-10 mA, 0-2V, 1-5 V, or 0-10 V signals. 3-1/2 0.39" (10 mm) high digits. Powered from 10-30 Vdc.
   

Microminiature Digital Process Meter, Model M-35
   

BAR Series 1/8 DIN Bargraph Process Display
 

30-segment bar graph meter with 75 mm (3") scale length for 0-1 mA, 4-20 mA, 0-10V or 1-5 V process signals. Optional dual-relay output.

1/8 DIN Bar Graph Process Display, BAR Series

PRO-BAR Large Bargraph Process Display
 

50-segment bar graph meter with 250 mm (10") scale length for 0-1 mA, 4-20 mA, 0-10V, or 1-5 V process signals.

Large Bar Graph Process Display, Model PRO-BAR
 
Transducers for flow or batch control may put out a pulsed / AC signal or a conditioned analog signal such as 0-1 mA, 4-20 mA or 0-10 V. Laurel offers digital panel meters for all signal types normally associated with flow meters, with scaling to display in engineering units, such as Gallons, GPM, or liters/sec. Flow meter capabilities include square root extraction for use with differential pressure flow meters, custom curve linearization, rate from successive readings, totalizing from rate signals, analog outputs tied to the reading, and relay outputs for alarm or control.  

Flow control or batch control block diagram

 
Batch control (or batching control) is used for repeatitive fill operations. Laurel batch controllers are available for flow meter signals with a pulse output or an analog output (0-1 mA, 4-20 mA or 0-10 V). Batch control is provided by two relays, one of which can serve as a pre-warn relay to slow down filling near the setpoint. The display can be set to show the current batch total, grand total, number of batches, or flow rate. All displayed values are scaled to engineering units of volume or flow.  

Batch control block diagram

 

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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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