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True AC RMS Voltage or Current
4-20 mA Current Transmitter
DIN Rail mounted, digitally
programmable.
High accuracy at high update rates.
Features
- 0.2, 2, 20, 200,
300V & 600V AC input ranges.
- 2, 20, 200 mA and 5A
AC input ranges.
- All ranges factory calibrated.
- AC coupled, frequencies from 10 Hz to 10
kHz.
- Crest factor of 2.4 at full scale
input.
- 4-20 mA or 0-10V isolated transmitter outputs,
user selectable.
- Output resolution: 0.025% of span
(12 bits).
- Output accuracy:
±0.1%
of full span.
- DIN rail mount package only 22.5 mm thick.
- Powered by AC or DC.
- Detachable screw-clamp connectors.
- Easy setup using PC-based
Instrument Setup Software.
- Optional dual solid state relays for alarm or control.
- Optional custom curve linearization (Extended main board).
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Description
Laureate 4-20 mA output,
AC RMS input
transmitters provide 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 accepts the output of 5A current transformers, 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.
Maximum error as a function of frequency
and signal amplitude
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Laureate AC RMS input transmitters
duplicate the performance and programmable features
of their Laureate AC RMS digital panel meter counterparts. Features include optional dual solid state relays for local alarm or control. 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 plugs.
In addition to the 4-20 mA
output that would typically be used for signal transmission in an
industrial environment, a 0-10V analog output is selectable. Either
selection provides 12-bit (0.025%) resolution of output span and is
ultra-linear to within one bit. The output tracks the reading that would be transmitted digitally. For
AC RMS signals, output accuracy is ±0.1% of full scale input.
Output isolation from signal and power grounds
is provided by a separate on-board transmitter power supply, thereby
eliminating potential problems caused by ground loops. The supply can an
drive 20 mA into a 500 ohm (or lower) load for 10V compliance, or 10V
into 5K ohm (or higher) load for 2 mA compliance.
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).
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Specifications
Laureate 4-20 mA Transmitters,
AC RMS Voltage or Current Input
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AC RMS Input |
Range |
Resolution |
Input Ohms |
Voltage Ranges
& Input Resistance
(1% to 100% of full scale)
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200.00 mV
2.0000 V
20.000 V
200.00 V
600.0 V |
10 µV
100 µV
1 mV
10 mV
100 mV |
22 Mohm
22 Mohm
1 Mohm
1 Mohm
1 Mohm |
Current Ranges
& Input Resistance
(1% to 100% of full scale)
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2.0000 mA
20.000 mA
200.00 mA
5.000 A |
0.1 µA
1 µA
10 µA
1 mA |
100 ohms
10 ohms
1 ohm
0.01 ohm |
Input Resolution
Update Rate, Max
Max applied voltage
Over-current protection |
16 bits (65,536 steps)
1 sec (RMS converter settling time)
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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Analog Output |
Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Isolation |
4-20 mA, 0-20 mA or 0-10 Vdc (selectable)
10V ( 0-500 ohm load )
2 mA ( 5 kOhm load )
12 bits (4,096 steps)
±0.1% of output span (limited by RMS converter)
250V rms working, 2.3 kV rms per 1 minute test |
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Transducer Excitation Output (standard) |
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) |
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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Power Input |
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 |
Case Dimensions
Case Mounting
Electrical Connections |
120 x 101 x 22.5 mm
35 mm rail per DIN EN 50022
Detachable screw-clamp plugs |
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Environmental |
Operating Temperature
Storage Temperature
Relative Humidity |
0°C to
70°C
-40°C to 85°C
95% at 40°C, non-condensing |
Pinout
Laureate 4-20 mA Transmitters,
AC RMS Voltage or Current Input
(shown with optional dual relay
output)
Ordering
Guide
Laureate 4-20 mA Transmitter,
AC RMS Voltage or Current Input
Create a model
number in this format: TA202RMV1. This is for a
4-20 mA output transmitter, standard main board, 95-240
Vac power, isolated dual solid state relays, and a 200.00 mV
AC input signal. Includes plug-in screw terminal
connectors.
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Transmitter
Type |
TA Laureate 4-20 mA Transmitter |
$235 |
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Main
Board |
2 Standard Main Board
4 Extended Main Board
Note:
Extended allows custom curve linearization and rate from
successive readings. |
NC
$40 |
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Power |
0 95-240 Vac & 90-300 Vdc
1 12-30 Vac & 10-48 Vdc |
NC
$30 |
Setpoint
Output |
0 None
2 Isolated Dual Solid State Relays |
NC
$30 |
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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 |
$35 |
True AC RMS Amps
RMA1 2.0000 mA
RMA2 20.000 mA
RMA3 200.00 mA
RMA4 5.000 A |
$35 |
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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. |
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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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