Siemens Sitrans P Accessories, Supplementary electronics for 4-wire connection, 134

© Siemens AG 2008

SITRANS P measuring instruments for pressure

SITRANS P Accessories

Supplementary electronics for 4-wire connection

■Overview

2

Structural design
Dimensions (W x H x D) in mm	80 x 120 x 60 (3.15 x 4.72 x 2.36)
(inch)
Electrical connection	Screw terminals (Pg 13.5 cable
	inlet) or Han 7D / Han 8U plug
Power supply
Supply voltage	230 V AC (-10 ... +6%,
	47 ... 63 Hz, approx. 6 VA) or
	24 V AC/DC (24 V AC ± 10%,
	47 ... 63 Hz, approx. 3 VA)
Permissible ripple (within the speci-	Approx. 2.5 Vpp
fied limits)

■Dimensional drawings

SITRANS P pressure transmitter with supplementary electronics for 4- wire connection

Direct connection of the supplementary electronics to a SITRANS P pressure transmitter from the DS III HART series pro- duces a transmitter for four-wire connection.

The supplementary electronics cannot be attached to explosion- protected pressure transmitters. The supplementary electronics is fitted in a light metal housing which is mounted on the left side of the pressure transmitter.

Note on ordering:

The supplementary electronics has to be be ordered through the supplementary options of the pressure transmitter in question.

■Technical specifications

SITRANS P, supplementary electronics for 4-wire connection Output

SITRANS P pressure transmitters with supplementary electronics for four- wire connection, dimension drawing, dimensions in mm (inch)

■Schematics

Output signal	0 ... 20 mA or 4 ... 20 mA
Load	Max. 750 Ω
Voltage measurement	Linear (square-rooting in transmit-
	ter if necessary)
Electrical isolation	Between power supply and input/
	output
Measuring accuracy	To EN 60770-1
Conformity error (in addition to	≤ 0.15% of set span
transmitter)
Influence of ambient temperature	≤ 0.1% per 10 K
Power supply effect	≤ 0.1% per 10% change in volt-
	age or frequency
Load effect	≤ 0.1% per 100% change
Rated conditions
Ambient temperature	-20 ... +80 °C (-4 ... +176 °F)
Storage temperature	-50 ... +85 °C (-58 ... +185 °F)
Degree of protection	IP54 to EN 60529
Electromagnetic compatibility	EN 50081, EN 50082
(EMC)

Terminals

1 HAN 8U/7D plug

2 plugs

AC 230 V

UC 24 V

Ia Output current

1 2 3 4 5 6

+-

I a		U H SL
6	7	SL
5	1	2
4		3

		+ I a -	U H
6	7		6	7	SL
5	1	2	5	1	2
4		3	4		3

	I a
+		-		U H
Han 7D			Han 7D
Han 7D			Han 8U
SL	Protective earth conductor UH Power supply

Supplementary electronics for 4-wire connection, connection diagram

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Siemens FI 01 · 2009