Eurotherm Action Instruments - Q403-3 - Two-wire Transmitter Input Isolator

Q404-3
Two-wire Transmitter Input Isolator

TECHNICAL SPECIFICATION (Q404-3)
Input	Range:	4-20mA
	Impedance:	< 20W
	Protection:	withstands up to 24VDC Common Mode: 2000VAC, input to ground
Output	Range:	4-20mA, 0-10V
	Voltage Output Drive:	10mA (1000W minW)
	Current Output Compliance:	15V (750W maxW)
LED Indication		Green LED indicates power on
Output Accuracy		< +0.1% of full-scale input typical,
		< +0.2% maximum @23C including linearity, repeatability and hysteresis
Stability		< 0.025%/C of full-scale maximum for full-scale and zero EMC Compliance (CE Mark)
	Emmissions:	EN50081-1
	Immunity:	EN50082-2
	Safety:	EN50178
Adjustability		Front accessed 10 turn, + 5% of range for zero and span
Isolation		> 2000VAC between input and output and channel to channel
Response Time		25mSec typical (10 to 90%)
Power		10.8 to 26.4VDC ,2W max.
Temperature	Operating:	-5 to 60°C (23 to 140°F)
	Storage:	-40 to 80°C (-40 to 176°F)
Humidity (non-condensing)
	Operating:	15 to 90% (@45°C
	Soak:	90% for 24 hours (@60°C)
Wire Terminal		Socketed screw terminals for 12-22 AWG
Agency Approvals		UL recognized per standard UL 508 (File No E99775). CSA certified per standard C22.2 No. 0- M91 and 142-M1987 (File No. LR42272-84). CE comformance per EMC directive 89/336/EEC and Low Voltage 73/23/EEC.

Operation
The ActionI/Q model Q404-3 operates as a four-wire transmitter; it derives its power from an independent, transformer isolated, DC to DC power source (10.8 to 26.4VDC). Typically a 12 or 24VDC source is used for power.

The Q404-3 has fixed input and output ranges. Standard output ranges in Table 1 are calibrated to rated accuracy.

Calibration

To check calibration, connect the input to a calibrated DC source. Connect the output to a DC voltage or current meter and the input power to DC source (between 10.8 and 26.4V) capable of providing up to 0.5 Amps.
Set the calibrator to 4mA and adjust the zero potentiometer for minimum (e.g. 4mA) output.
Set the calibrator to 20mA and adjust the span potentiometer for maximum (e.g. 20mA) output.
Repeat steps 2 and 3 to validate calibration to the output load.

Last updated July 20, 2004

Q404-3Two-wire Transmitter Input Isolator

Q404-3
Two-wire Transmitter Input Isolator