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True AC RMS Voltage or Current
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DIN Rail mounted, digitally
programmable.
Exceptional accuracy at high update rates.
Features
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Description AC Ranges. The Laureate Serial I/O, AC RMS input transmitter provides six voltage ranges and four current ranges, all factory calibrated and jumper selectable. The 200.00 mV and 2.0000 V ranges provide a high input impedance of 22 Mohm to minimize the load on the voltage signal. A special 5.000A range allows the output of 5A current transformers to be applied directly to the transmitter, with no need for a stepdown transformer. The current readings can easily be scaled digitally as needed. True RMS. Precision circuitry is used to determine the root-mean-square of complex waveforms from 10 Hz to 10 kHz. Spikes up to 2.4 times the maximum of each range are accurately measured. This provides a crest factor (Vp / Vrms) of 240 for a signal amplitude of 1% of full scale, decreasing to 2.4 at 100% of full scale. Laureate AC RMS input transmitters duplicate the performance and programmable features of their Laureate AC RMS digital panel meter counterparts.
Serial Data Output. Laureate TM Series transmitters send data as a serial digital signal. RS485 or RS232 signal levels are jumper selectable and can each be associated with either the Modbus protocol or Laurel’s simpler Custom ASCII protocol.
Transmitter programming is via the unit's three-terminal serial 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). Laurel's serial output transmitters and meters can also be part of PC-based data logging systems using Laurel's Datalogging Software, which operates under the Laurel ASCII Protocol. A single software command switches between the Modbus and Laurel ASCII Protocols. Transmitter options include dual solid state relays for local alarm or control and an isolated 4-20 mA or 10V (selectable) analog output, effectively providing a linearized analog transmitter output that tracks the reading that would be transmitted digitally. The analog output provides 12-bit (4096 step) resolution of the output span and is ultra-linear to within one bit. Its accuracy is ±0.05% of span for all signal types, except for AC rms, where accuracy is ±0.1%. Output isolation from signal and power grounds is provided by a separate on-board power supply, which can drive 20 mA into a 500 ohm load for 10V compliance. Output isolation eliminates problems caused by ground loops. DIN Rail Mounting. Laureate transmitters are housed in a 35 mm DIN rail case that is only 22.5 mm (0.89") thick. Signal connections are via detachable screw clamp plug connectors. |
Specifications
Laureate Serial Output Transmitters,
AC RMS Voltage or Current Input
| AC RMS Input |
Range |
Resolution | Input Ohms |
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Voltage Ranges & Input Resistance (1% to 100% of full scale) |
200.00 mV |
10 µV |
22 Mohm |
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Current Ranges & Input Resistance (1% to 100% of full scale) |
2.0000 mA |
0.1 µA |
100 ohms |
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Input Resolution Input Accuracy Output Update Rate Converter Settling Time Max applied voltage Over-current protection |
16 bits (65,536 steps) ±0.1% of full scale input (determined by ADC). 50 or 60 per second 1 sec (RMS converter) 600 Vac for 20, 200 & 600 V ranges, 125 Vac other ranges. 25x for 2 mA, 8x for 20 mA, 2.5x for 200 mA, 1x for 5A. |
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| Serial I/O (standard) | |||
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Signal levels Data Rates Output Isolation Serial Protocols Devices on RS-485 Line Modbus Addresses Modbus Modes Modbus Compliance |
RS485 (default) or RS232 (jumper selectable) 300, 600, 1200, 2400, 4800, 9600, 19200 baud 250V rms working, 2.3 kV rms per 1 min test. Modbus RTU, Modbus ASCII, Laurel ASCII (selectable) 32 max without a repeater. 247 max RTU or ASCII, 2-wire. Modbus over Serial Line Specification V1.0 (2002). |
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| 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 |
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| 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. |
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| Analog Output (optional) | |||
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Output Levels Compliance, 4-20 mA Compliance, 0-10V Output Resolution Output Accuracy Output Isolation |
0-20 mA, 4-20 mA or 0-10 Vdc (selectable) 10V ( 0-500 ohm load ) 2 mA ( 5 kOhm load ) 12 bits (4,096 steps) ±0.05% of output span 250V rms working, 2.3 kV rms per 1 minute test |
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| 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. |
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| 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. |
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| 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 |
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Pinout
Laureate Serial Output Transmitter, AC RMS Voltage or Current Input
(shown with optional analog output
and dual relay
output)
Ordering
Guide
Laureate Serial Output Transmitter,
AC RMS Voltage or Current Input
| Create a model
number in this format: TA2020RMV1. This example calls out a
Modbus I/O transmitter, standard main board, 95-240 Vac power, isolated dual solid state relays, no analog
output, and a 200.00 mV
AC input signal. Includes plug-in screw clamp
connectors. |
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Transmitter Type |
TM Laureate Transmitter, Modbus or Laurel ASCII Protocol. | $210 |
| Main Board |
2 Standard Main Board. 4 Extended Main Board. |
NC $40 |
| Note: Extended allows custom curve linearization and rate from successive readings. Not applicable to temperature. | ||
| Power |
0 95-240 Vac & 90-300 Vdc 1 12-30 Vac & 10-48 Vdc. |
NC $30 |
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Setpoint Output |
0 None. 2 Isolated Dual Solid State Relays. |
NC $30 |
| Analog Output |
0 None. 1 4-20 mA, 0-10V. |
NC $25 |
| Signal Input |
True AC RMS Volts RMV1 200.00 mV. RMV2 2.0000 V. RMV3 20.000 V. RMV4 200.00 V. RMV5 600.0 V (range not UL approved). RMV6 300.0 V. |
$35 |
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True AC RMS Amps RMA1 2.0000 mA. RMA2 20.000 mA. RMA3 200.00 mA. RMA4 5.000 A. |
$35 | |
| Note: The same AC RMS signal conditioner can be user configured for AC Volts or AC Amps. It is precalibrated in EEPROM for all AC Volt and AC Amp ranges listed. | ||
| Accessories |
CBL03 RS-232 cable, TM 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 |
