Eurotherm Action Instruments - Q510 - Multi-channel, RTD Input Two-wire Transmitter

Q510
Multi-Channel, RTD Input, Two-wire Transmitter

TECHNICAL SPECIFICATION (Q510)
Input	Type:	Accepts two or four, three-wire Pt100 RTDs (a:0.00385W/W/°C)
	Ranges:	see Table 1
Input Excitation		0.8mA, typical, each channel
Input Leadwire Effect		<1% of full scale output, max. (@40W max./ lead)
Output Range		4-20mA
Supply Voltage Range		10 to 35VDC, each channel
Output Accuracy		< 0.1% of full-scale input typical, <0.4% maximum, including linearity, repeatability and hysteresis
Adjustablity		Front accessed 10 turn, +2% of span for zero and span, typical.
Stability		< 0.025%/oC of full-scale maximum for full-scale and zero
ESD Susceptibility		Capable of meeting IEC 801-2 level 2 (4kV)
Response Time		50mSec typical (10 to 90%)
Temperature	Operating:	-40 to 80C (-40 to 176F)
	Storage:	-40 to 80C (-40 to 176F)
Humidity (non-condensing)
	Operating:	15 to 90% (@45C)
Wire Terminal		Socketed screw terminals for 12-22 AWG
Weight		0.34lbs
Agency Approvals		CSA certified per standard C22.2 (File No. LR42272).
		UL recognized per standard UL508 (File No. E99775).
		CE conformance per EMC directive 89/336/EEC and low voltage 73/23/EEC (Input <75VDC).

Operation
The ActionI/Q model Q510 operates as a two-wire transmitter; each channel derives its power from a (10-35VDC) source connected in series with the 4-20mA output loop. Typically a 24VDC source is used, allowing 14VDC (700W @ 20mA) or less for other devices connected in series, in the current loop. The outputs of the Q510 are protected from reverse polarity. Zero and span pots are provided for each channel to calibrate the output to the input RTD.

The Q510 provides either a dual (2) channel or quad (4) channel, RTD to current, two-wire transmitters in one package. Standard input temperature ranges (see Table 1) are calibrated to rated accuracy. One range per module; two or four channels per module.

Calibration

Connect the input to a calibrated three-wire resistance source (not a resistance simulator). Connect the output in series to a voltage source capable of supplying at least 20mA and a milliamp current meter.
Set the calibrator to the specified minimum temperature resistance value and adjust the zero potentiometer for 4mA output.
Set the calibrator to the specified maximum temperature resistance value and adjust the span potenti- ometer for 20mA output.
Repeat steps 2 and 3, as necessary, to validate calibration.

Last Updated Thursday, July 28, 2005

Q510Multi-Channel, RTD Input, Two-wire Transmitter

Q510
Multi-Channel, RTD Input, Two-wire Transmitter