Siemens LR 460 instruction manual Interface

Long-term stability		≤ ± 1 mm/year
Near Range (blanking)		0.35 m (1.15 ft)
Update time		mA output and loop display is updated once per
		second
Beam angle
•	3" horn:	11° at –3 dB boundary
•	4" horn:	8° at –3 dB boundary

Memory

•non-volatile EEPROM

•no battery required

Interface

Analog output (Not applicable to PROFIBUS PA option)

•	signal range	4 to 20 mA
		upper limit 20 to 23 mA adjustable
•	fail signal	3.6 mA to 23 mA; or last value
•	load	Max. 600 Ω; for HART1 communication min. 230 Ω
Digital output
•	function	Configurable as a device status or limit value (level)
•	signal type	Relay, either NCC or NOC function, max. 50 V DC,
		max. 200 mA, rating max. 5 W.
		Self-resetting fuse, Ri = 9 Ω
Electrical isolation		Outputs electrically isolated from the power supply and
		from each other
Display
•	LCD	two lines of 16 characters each, configurable for the
		following displays:
		level, amplitude, digital output,
		temperature, validity, signal-to-noise ratio,
		output current, distance

Specifications

1.HART® is a registered trademark of HART Communication Foundation.

7ML19985JM01 SITRANS LR 460 – INSTRUCTION MANUAL Page 7