Laureate™ 16-Bit Analog Output Option

Isolated 4-20 mA, 0-20 mA or 0-10V or -10 to +10V analog output scaled to readout of digital panel meters, counters and remote displays
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Key Features
  • 16-bit resolution (1 part in 65,536 or 0.0015% of full scale)
  • 4-20 mA, 0-20 mA, 0-10V, or -10 to +10V analog output
  • Analog output linearized to reading
  • Analog output isolated to 250 Vac
  • ±0.02% full scale accuracy
  • Scale and offset via meter front panel, RS232, RS485 or USB
  • 50 Hz or 60 Hz update rate
  • 12V compliance at 20 mA
  • Output derived from filtered or unfiltered signal input
  • Certified EN 61010-1 (CE Mark) and RoHS
Description
Using a digital panel meter or electronic counter as an isolated 4-20 mA current loop transmitter

A 16-bit analog output option board can turn a Laureate 1/8 DIN digital panel meter, counter, timer or remote display into a superb, isolated, linearized transmitter or signal conditioner with exceptional accuracy and high-speed response. The analog output for thermocouples, RTDs and custom curves is linearized to the displayed reading.

The analog output can be selected as 4-20 mA, 0-20 mA, unipolar 0-10V, or bipolar -10V to +10V with a 20V span. If a voltage output is selected, output pins 1 and 2 may be reversed to provide reversed polarity.

A 16-bit D-to-A converter provides 0.0015% full-scale resolution and ±0.02% full-scale accuracy. The update rate for meters is a fast 60/sec for 60 Hz power or 50/sec at 50 Hz power. The analog output can track the unfiltered signal for fastest response, or a digitally filtered signal for best noise rejection.

Scaling of the analog output is easily entered via the meter's front panel pushbuttons or serial digital interface using Instrument Setup software. The displayed readings to produce the low and high analog outputs can be set to any value from -99,999 to +99,999 for DPMs, or -999,999 to +999,999 for counters and timers.

Isolation from power and signal is provided by a separate power supply in the meter. This supply can drive 20 mA of current into loads up to 600 ohms for 12V compliance. Isolation to signal ground and power ground eliminates problems caused by ground loops.

Laureate DIN rail transmitters, whether 4-20 mA transmitters or serial output transmitters, also come with a scalable 16-bit analog output, which can be configured for current or voltage.

Specifications Back to top
Electrical
Power source
Signal source
Output linearization
Output Levels (selectable)
Compliance at 20 mA
Compliance at 10 V
Isolation
Output resolution
Output nonlinearity
Accuracy
Output update rate, DPMs
Output update rate, counter rate meter
Provided by meter
Filtered or unfiltered digitized signal
Linearized to reading
4-20 mA, 0-20 mA, 0-10V, -10 to 10V
12V ( 600 Ω max load )
2 mA ( 5 kΩ min load)
250V rms working, 2.3 kV rms per 1 min test
16 bits (0.0015% of full scale)
< 0.01% of full scale
< 0.02% of full scale
50 or 60/sec (output may be digitally filtered)
Gate time + 30 ms + 0-2 periods
Scaling
Zero output & full-scale output, DPMs
Zero output & full-scale output, counters
Minimum span
-99,999 to +99,999 counts
-999,999 to +999,999 counts
150 counts
J4 Pin Assignments
Unipolar Connections
4-20 mA or 0-20 mA output 1
0-10V output 2
Isolated ground 3
Bipolar Connections
Reference or Return 1
-10V to +10V Output 2
N/C 3
feedback
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