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Laureate™ Counters with Arithmetic
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Extended Counter
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Description
Fast, High Resolution Measurement
Universal Signal Conditioner
Other Features & Options
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Specifications
| Display | |
| Readout Display Range Zero Adjust Span Adjust Indicators |
6 LED digits, 7-segment, 14.2 mm (.56"), red or green LED -999999 to +999999, XXXXEX notation beyond 999999 -999999 to +999999 0 to 999999 Four LED lamps |
| Inputs | |
| Types Signal Ground Channel A Frequency Channel B Frequency Minimum Signal Maximum Signal Noise Filter Contact Debounce |
AC,
pulses from NPN, PNP transistors, contact closures, |
| Update Rate | |
| Frequency Technique Conversion Time Gate Time Time Before Zero Out |
Inverse period Gate time + 30 ms+ 0-2 signal periods Selectable 10 ms to 199.99 s Selectable 10 ms to 199.99 s |
| Accuracy | |
| Time Base Span Tempco Long-term Drift |
Crystal
calibrated to ±2 ppm |
| Power | |
| Voltage, standard Voltage, optional Frequency Power Isolation |
95-240 Vac ±10% 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 |
| Excitation Output | |
| 5
Vdc 10 Vdc 24 Vdc Output Isolation |
5 Vdc ±5%, 100 mA 10 Vdc ±5%, 120 mA 24 Vdc ±5%, 50 mA 50 Vdc to meter ground |
| Analog Output (optional) | |
| Output
levels Compliance Scaling Resolution Isolation |
0-10V,
0-20 mA, 4-20 mA (jumper selectable) 2 mA at 10V (5 kOhm load), 12V at 20 mA (0-60 ohm load) Zero and full scale adjustable from -999999 to +999999 12 bits (0.025% 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 8A at 250 Vac or 24 Vdc 250V rms working, 2.3 kV rms per 1 min test |
| Dual Solid State Relay Outputs (optional) | |
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Relay Type Load Rating Isolation |
SPST, normally open,
Form A 120 mA at 130 Vac or 170 Vdc, 28 ohms series resistance 250V rms working, 2.3 kV rms per 1 min test |
| Serial Data I/O (optional) | |
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Board Selections Protocols Data Rates Digital Addresses Isolation |
RS232, RS485, Modbus RS485 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 | |
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Operating Temp. Storage Temp. 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 | |
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Application Examples
Controlling the Mixing Ratio of Two Fluids |
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Displaying and alarming the input flow rate ratio of two fluids (gas or liquid) allows these to be mixed in a predetermined ratio in continuous processes. The sensing element is normally a turbine flowmeter, which outputs pulses at a frequency proportional to flow rate. The A/B ratio can also be displayed for totalized rate (or delivered volume). |
Comparing Fluid Inflow & Outflow |
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The ratio of the inflow and outflow rates of a tank is a measure of the relative filling or emptying rate. The same meter can also be programmed to display the net inflow or outflow rate in flow units, or to display totalized inflow our outflow in volume units. Any of these parameters can be alarmed using the dual relay board and be transmitted via 4-20 mA, RS-232 or RS-485. |
Controlling Coating Thickness on a Film |
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In this application, Channel A measures the rate at which a coating material is applied, as measured by a flow meter, while Channel B measures the speed of the film based on pulses from a proximity switch. Displaying and alarming the A/B ratio assures that an even thickness of coating material is applied as the speed of the film is varies. |
Synchronizing Two Conveyor Lines |
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The dual-channel Laureate counter can measure the speed of conveyor lines by using the output of proximity switches which sense gear teeth or spokes of rotating drive wheels. Displaying the speed ratio of two lines allows line speeds to be adjusted so that material arrives at work stations when needed. |
Measuring Draw for Elongation |
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Draw (Ch A / Ch B - 1) can be used to display the elongation of films compressed between rollers, the shrinkage films, and the RPM difference of rollers whose speed is varied to maintain tension. The six-digit resolution of the Laureate dual channel counter / rate meter is ideal for comparison of rates that are close to each other. |
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Ordering
Guide
Laureate™ A/B Ratio & A/B-1 Draw Meters
Click
on the radio buttons to build a model number with pricing.
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Resource Pages |
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3183-G Airway Avenue Costa Mesa, CA 92626, USA |
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