PS308A

Description

Product characteristics

Number of inputs and outputs

Number of analogue outputs: 1

Measuring range

0…0.25 bar

0…250 mbar

0…3.63 psi

0…25 kPa

Application

for industrial applications

Media

Liquids

Medium temperature [°C]

-10…60; (T6: -10…60 °C; T5: -10…80 °C; T4: -10…85 °C; 1 D, 1/2 D, 2 D (750 mW): -10…40 °C; (650 mW): -10…70 °C; (550 mW): -10…85 °C)

Min. bursting pressure

2.4 bar

35 psi

240 kPa

Pressure rating

2 bar

29 psi

200 kPa

Type of pressure

relative pressure

Electrical data

Switching amplifiers	connection to intrinsically safe supply isolators (Ex ia)
Operating voltage [V]	10…30 DC
Protection class	III
Reverse polarity protection	yes
Measuring principle	hydrostatic

Inputs / outputs

Number of inputs and outputs	Number of analogue outputs: 1

Outputs

Total number of outputs	1
Output signal	analogue signal
Number of analogue outputs	1
Analogue current output [mA]	4…20
Max. load [Ω]	700; (Ub = 24 V; (Ub – 10 V) / 20 mA)
Short-circuit protection	yes

Measuring/setting range

Measuring range

0…0.25 bar

0…250 mbar

0…3.63 psi

0…25 kPa

Accuracy / deviations

Repeatability [% of the span]	< 0,1; (with temperature fluctuations < 10 K)
Characteristics deviation [% of the span]	< 0,25 (BFSL) / 0,5; (incl. linearity, zero and span error (limit value setting); BFSL = Best Fit Straight Line)
Linearity deviation [% of the span]	< 0,2 (BFSL)
Long-term stability [% of the span]	< 0,2; (per year)
Temperature coefficient zero point [% of the span / 10 K]	< ± 0,2; (0…50 °C)
Temperature coefficient span [% of the span / 10 K]	< ± 0,2; (0…50 °C)

Operating conditions

Ambient temperature [°C]

-10…60

Note on ambient temperature

T6: -10…60 °C

T5: -10…80 °C

T4: -10…85 °C

1 D, 1/2 D, 2 D (750 mW): -10…40 °C

1 D, 1/2 D, 2 D (650 mW): -10…70 °C

1 D, 1/2 D, 2 D (550 mW): -10…85 °C

Storage temperature [°C]

-10…60

Protection

IP 68

Tests / approvals

Approval	BVS 10 ATEX E 132 X; IECEx BVS 10.0085 X
ATEX marking	I M1 Ex ia I Ma
	II 1 G Ex ia IIA T4/T5/T6 Ga
	II 1/2G Ex ia IIC T4/T5/T6 Ga/Gb
	II 2 G Ex ia IIC T4/T5/T6 Gb
	II 1D Ex ia IIIC T120°C Da
MTTF [years]	969
Pressure Equipment Directive	Sound engineering practice; can be used for group 2 fluids; group 1 fluids on request