Siemens technical specifications Displays and controls, Power supply

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Transmitters for gage, absolute and differential pressure

ZD series for gage and absolute pressure

•Upper and lower current saturation limit

•Electrical damping

The other two keys are used to set the values in the individual op- erating modes.

2Two LED indicators are fitted above the display to monitor the set range and the status.

The green LED signals that the measured pressure lies within the set limits. The red LED lights up when the measured pressure lies outside the set limits and when there is an error.

■Technical specifications

SITRANS P pressure transmitters, ZD series

Mode of operation
Measuring principle		Thin-film strain gage
Input
Measured variable		Gage and absolute pressure
Measured range		Resolution
0	... 2 bar (0 ... 29 psi)	0.6 mbar (0.008 psi)
0	... 10 bar (0 ... 145 psi)	3 mbar (0.044 psi)
0	... 50 bar (0 ... 725 psi)	15 mbar (0.218 psi)
0	... 200 bar (0 ... 2900 psi)	60 mbar (0.9 psi)
0	... 400 bar (0 ... 5800 psi)	120 mbar (1.8 psi)
Measured range		Overload limit
0	... 2 bar (0 ... 29 psi)	5 bar (72.5 psi)
0	... 10 bar (0 ... 145 psi)	25 bar (363 psi)
0	... 50 bar (0 ... 725 psi)	120 bar (1740 psi)
0	... 200 bar (0 ... 2900 psi)	500 bar (7250 psi)
0	... 400 bar (0 ... 5800 psi)	600 bar (8700 psi)
Range adjustment (turndown)		5:1
Output
Output signal		4 ... 20 mA
Lower current limit		min. 3.6 mA
Upper current limit		max. 23 mA
Output protected against		Reversed polarity, overvoltage
		and short-circuiting
Max. load		R B = (UH - 12 V) / 0.023 A
Voltage measurement		Linear rising
Measuring accuracy		To EN 60770-1
Error in measurement (including		< 0.25% of full-scale value (typi-
non-linearity, hysteresis and repeat-		cal), max. 0.5%
ability, at 25 °C (77 °F))
Adjustment time		< 100 ms
Long-term drift		0.25% of full scale value/year
Influence of ambient temperature		< ±0.25%/10 K (< ±0.25%/10 K)
		of full-scale value
Vibration influence		0.05%/g to 500 Hz in all directions
		(to IEC 68-2-64)
Power supply effect		< ±0.01%/V of full-scale value

Rated conditions
Ambient conditions
• Ambient temperature	-25 ... +85 °C (-13 ... +185 °F)
• Storage temperature	-40 ... +85 °C (-40 ... +185 °F)
Medium conditions
• Process temperature	-30 ... +100 °C (-22 ... +212 °F)
Degree of protection	IP65 to EN 60529
Electromagnetic compatibility
• Emitted interference and interfer-	To EN 61326/A1 appendix A
ence immunity	(1998)
Displays and controls
Display	LCD, max. 5 digits, digit height
	9 mm
Decimal point	Freely parameterizable
Limit values	Freely parameterizable
Limit violation display	Red LED and message on LCD
	(↑ symbol /↓ symbol in case of
	limit violation in upward / down-
	ward direction)
Parameterization	With 3 keys
Units	mA or % or physical variable
	(default setting: bar)
	Other dimensions: mbar, kPa,
	MPa, mmH20, mH20, psi, inH20,
	mmHg, kg/cm², torr, atm
Damping	Between 0.1 and 100 s
	(increment: 0.1 s) freely parame-
	terizable
Design
Weight	≈0.6 kg (≈1.32 lb)
Electrical connection	Using 2-pole plug connector with
	M16x1.5-Cable inlet to
	EN 175301-803A, plastic
Process connection	• Male thread G½B and female
	thread G1/ B
	8
	• G½B to EN 837-1
	• Female thread: ½-14 NPT
Version of housing/process connec-	• Radial (type A), can be swiveled
tion	by max. ±120° (α)
	• Axial (type B), can be swiveled
	by max. ±360°
Material
Non-wetted parts materials
• Field housing	Ø 80 mm (3.15 inch), stainless
	steel mat. No. 1.4016
• Cover	Stainless steel, mat. No. 1.4016
	with glass
Wetted parts materials
• Measuring cell	Al2O3
• Gasket	Viton
• Process connection	Stainless steel, mat. No.
	1.4571/316Ti
Power supply
Terminal voltage on pressure trans-	12 ... 30 V DC
mitter (UH)
Certificate and approvals
Classification according to pressure	For gases of fluid group 1 and liq-
equipment directive 97/23/EC	uids of fluid 1; complies with
	requirements of article 3, para-
	graph 3 (sound engineering prac-
	tice)

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Siemens FI 01 · 2009