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Dual Pulse Input Totalizer
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Features |
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Standard Main Board
Extended Main Board
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Description Laureate 4-20 mA output, pulse input totalizer transmitters accept two independently scalable input channels from a wide range of pulse sources, such as NPN or PNP proximity switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC voltages to 250 Vac. Input pulse rates can be as high as 1 MHz.
The 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 is 25/sec. 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. |
Exceptional Accuracy and
Stability
Specifications
Laureate 4-20 mA Transmitter,
Dual
Pulse Input for Totalizing
| Pulse Input | |
| Types Signal Ground Minimum Signal Maximum Signal Maximum Frequency Contact Debounce |
AC,
pulses from NPN, PNP transistors, contact closures, magnetic pickups. |
| Analog Output | |
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Output Levels Compliance, 4-20 mA Compliance, 0-10V Output Resolution Output Accuracy Output Update Rate Output Isolation |
4-20 mA and 0-10 Vdc (selectable) 12V ( 0-600 ohm load ) 2 mA ( 5 kOhm load ) 12 bits (4,096 steps) ±0.05% of output span 25/sec max 250V rms working, 2.3 kV rms per 1 minute test |
| Transducer Excitation Output (standard) | |
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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) | |
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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 | |
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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. |
| Mechanical | |
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Case Dimensions Case Mounting Electrical Connections |
120 x 101 x 22.5 mm 35 mm rail per DIN EN 50022 Detachable screw clamp plug connectors |
| Environmental | |
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Operating Temperature Storage Temperature Relative Humidity |
0°C to
70°C -40°C to 85°C 95% at 40°C, non-condensing |
| Typical Applications | |
Up/Down Totalizing |
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Up/down totalizing is provided by a mode of the Extended totalizing transmitter where pulses are either added or subtracted on Channel A based on a direction input on Channel B. The unit can also be programmed so that counting by Channel A is inhibited by an input on Channel B. |
Combining Two Totals |
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A+B, A-B, A/B and AxB arithmetic functions are available with the Extended totalizing transmitter. A+B can sum two totals, while A-B subtracts the outflow total from inflow total. A/B ratio applied to two totals helps assure the proper mixing of components. |
Up or Down Counting with Preset |
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A single Laureate dual-channel totalizing transmitter will handle two repetitive fill operations by counting from zero up to a preset, or down from a preset to zero. The dual relay option is required. |
Machine ON Time and Utilization |
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An easy way to measure the ON time of machines is to count AC line cycles and scale the total to hours. To display machine utilization or duty cycle in percent, use the Extended totalizing transmitter. Connect Channel A to switched AC and Channel B to the AC line, and apply a 100 multiplier to the A/B ratio. |
Total and Rate Simultaneously |
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The Extended version of the Laureate dual channel totalizing transmitter can transmit scaled rate or total for the same channel at the push of a button, and alarm both the rate and total. The Extended version can also do curve linearization, thereby extending the working range and accuracy of flow transducers. |
Pinout
Laureate 4-20 mA Transmitter,
Dual
Pulse Input for Totalizing
(shown with optional dual relay
output)
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Transmitter
Powering a Single Sensor |
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| Transmitter Powering Two Sensors | Transmitter with Active or Passive Sensors |
Ordering
Guide
Laureate 4-20 mA Transmitter,
Dual
Pulse Input for Totalizing
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Create a model
number in this format: TA602FR. This is for a 4-20 mA transmitter,
Standard main board, 95-240 Vac power, isolated dual
solid state relays, and dual channel pulse input
signal conditioner. Includes detachable screw clamp
connectors. |
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Transmitter Type |
TA Laureate 4-20 mA Transmitter. | $235 |
| Main Board |
6 Standard Main Board. 8 Extended Main Board 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, linearization of nonlinear inputs. |
NC $40 |
| Power |
0 Isolated 95-240 Vac & 90-300 Vdc 1 Isolated 12-30 Vac & 10-48 Vdc. |
NC $30 |
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Setpoint Output |
0 None. 2 Isolated Dual Solid State Relays. |
NC $30 |
| Input Type | FR Dual-Channel Pulse Input Signal Conditioner. | NC |
| Accessories |
CBL03 RS-232 cable, TA to computer. CBL02 USB to RS-232 cable adapter. |
$19 $39 |
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Order from distributors for shipment to USA or Canada. |
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Order online for international shipment. |
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Resource Pages |
