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Laureate™ Frequency, Rate
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Features Standard Counter
Extended Counter All capabilities of the Standard Counter, plus:
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Description
Fast, High Resolution Measurement
Extended Counter Capabilities
Universal Signal Conditioner
Other Features and Options
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Specifications
| Display | |
| Readout Display Range Zero Adjust Span Adjust Indicators |
6 LRD digits, 7-segment, 14.2 mm (.56"), red or green. -999999 to +999999, XXXXEX scientific notation beyond 999999 -999999 to +999999 0 to 999999 Four LED lamps |
| Inputs | |
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Types |
AC,
pulses from NPN, PNP transistors, contact closures, magnetic pickups. |
| Update Rate | |
| Frequency Technique Conversion Time Gate Time Time Before Zero Output |
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 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 -99999 to +99999 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 | |
| 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 |
| Electrical Connections | |
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Typical Applications
AC Line Frequency |
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The Laureate will accept line voltages up to 250 Vac and display line frequency to 6-digit accuracy (50.0000 or 60.0000) in a few line cycles. Fast low frequency response is achieved by timing the period and taking its inverse. |
RPM and Speed |
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The Laureate can sense the low-level signals from magnetic pickups or the NPN or PNP transistor output of active sensors. These can be powered directly by the meter. Display in RPM or units of speed is achieved by mathematically scaling the meter. |
Flow Rate and Simultaneous Total |
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The Laureate is compatible with all flow meters which generate pulses at a frequency proportional to flow rate. The Extended version can display scaled rate or total for the same input at the push of a button, and alarm from both the rate and total. The Extended version can also linearize flow transducers so as to extend their dynamic range. |
Combining Two Rates |
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The Extended Laureate offers A+B, A-B and A/B arithmetic functions. A+B allows two input flows to be summed for total flow, while A-B allows outflow to be subtracted from inflow for net flow. Flow ratios aid in the proper mixing of ingredients |
Custom Curve Linearization |
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The Extended Laureate can linearize the output turbine flow meters, which tend to be nonlinear on the low end. Linearizing improves the dynamic range and accuracy of turbine flow meters. |
System-level Capabilities |
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The Laureate dual channel rate meter can independently scale, display and alarm two pulse input channels. All signal or alarm data can further be transmitted via RS-232 or RS-485, including peak readings and arithmetic combinations of the two rates. The displayed rates can also be transmitted as an isolated 4-20 mA or 0-10V analog output. |
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Ordering
Guide
Laureate™ Frequency, Rate & Period Meters
| Create a model
number in this format: L80101FR. This example calls out a Laureate
counter with an Extended Main Board with red LEDs, 95-240 Vac ±10% &
90-300 Vdc power, dual 8A contact relays, no second output, RS-232 serial output,
and a dual-channel frequency signal conditioner. Includes plug-in screw
terminals. |
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Main Board |
L5 Standard Main Board, Green LEDs. L6 Standard Main Board, Red LEDs. L7 Extended Main Board, Green LEDs. L8 Extended Main Board, Red LEDs. |
$230 $230 $270 $270 |
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With Standard Main Board: Scalable to
±999,999 for frequency, rate, square root of rate, up or down total,
period, A-to-B time interval. With Extended Main Board: Above, plus rate and total simultaneously, ratio (A/B), draw (A/B-1), other arithmetic functions (AxB, A+B, A-B), phase angle, stopwatch, up/down counting, batching operation, custom curve linearization. |
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| Power |
0 Isolated 95-240 Vac ±10% & 90-300 Vdc 1 Isolated 12-30 Vac & 10-48 Vdc. |
NC $30 |
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Setpoint Output |
0 None. 1 Dual 8A Contact Relays. 2 Isolated Dual Solid State Relays. |
NC $80 $55 |
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Analog Output |
0 None. 1 Isolated 0-20 mA & 0-10 V. |
NC $90 |
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Digital Interface |
0 None. 1 Isolated RS-232. 2 Isolated RS-485.. 4 Isolated Modbus RS-485. |
NC $60 $80 $90 |
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Input Type |
FR Dual-Channel Pulse Input Signal Conditioner | NC | ||
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Add-on Options |
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$30 NC $19 $39 $40 $140 $180 |
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Resource Pages |
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3183-G Airway Avenue Costa Mesa, CA 92626, USA |
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