1 Specifications

Table 1: Sensor specifications (at 23°C and p

absolute

= 966 mbar, VDD = 5.0 V unless otherwise noted).

SDP1000-L05 SDP1000-L SDP1000-R SDP2000-L SDP2000-R Unit Parameter

Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max -5 125 - 20 500 - 20 500 -100 3500 -100 3500 Pa Measurement range -0.02 0.5 -0.08 2 -0.08 2 -0.4 14 -0.4 14 Inch water Power supply manufacturer
(see Tab 4) 4.75 5.00 5.25 4.75 5.00 5.25 4.75 5.00 5.25 4.75 5.00 5.25 4.75 5 5.25 V Full scale output
(100 k load) 4.00 4.00 4.00 4.00 4.00 V Zero Pressure Output 0.250 0.250 0.250 0.250 0.250 V Accuracy 0.2 0.3 0.1 0.2 0.2 0.3 0.1 0.2 0.2 0.3 % FS
(1)(2) [0°C < T < 50°C] (also see Figure 1) 1.5 2 1 1.5 1 1.5 1 1.5 1 1.5 % m.v.
(1) Repeatability 0.3 0.5 0.3 0.5 0.3 0.5 0.3 0.5 0.3 0.5 % m.v.
(1) Offset stability 0 0.1 0 0.1 0 0.3 0 0.3 0 0.5 Pa / year Temp. variation of zero pressure output -3 +3 -3 +3 -30 +30 -3 +3 -30 +30 mV
[0°C < T < 50°C] - 0.1 + 0.1 - 0.4 + 0.4 - 2.8 + 2.8 Pa Temperature error of span 0.8 1.0 0.2 0.25 0.30 0.40 0.2 0.25 0.30 0.40 % FS
(1)(2) [T < 0°C or T > 50°C] 1.50 3.00 1.50 3.00 1.50 3.00 1.50 3.00 1.50 3.00 % m.v.
(1) Resolution < 30% FS (1) 0.05 0.1 0.2 0.05 0.1 0.2 0.2 0.5 1 0.2 0.5 1 Pa
Resolution 30..70% FS (1) 0.05 0.1 0.2 1.5 2.2 3 1.5 2.2 3 8 11 14 8 11 14 Pa 0.2 0.5 1.5 0.2 0.5 1.5 1 2.5 8 1 2.5 8 Pa
Resolution > 70% FS (1) (1) FS = full scale or span, m.v. = measured value, i.e. reading, whichever value is bigger
(2) FS = full scale or span, i.e. for the SDP1000 it is 500 Pa (2 “H2O), for the SDP2000 it is 3500 Pa (14 “H2O)
(3) See 2.2 Voltage Output formula for conversion

(1) SDP1000 / SDP2000 around 23°C (2) (1) SDP1000-L (2,3) Membrane based sensors SDP1000 / SDP2000 between 0°…50°C (3) Typical membrane based sensor with 1.5% FS error between 10°…40°C

offset drift/year [Pa] ± error [ % of measured value] (1) (2) (3) 012345 678910 0102030405060708090100 01234567 01234

1 2 3

differential pressure [% full scale]

repeatability [Pa]

Figure 1: Accuracy (includes errors caused by offset, linearity, hysteresis and repeatability) of the SDP1000 -L (1), (2) compared with typical membrane sensors (3). Figure 2: Max. repeatability and offset drift/year of the SDP1000-L (1) compared with two typical membrane based sensors (2,3). www.sensirion.com v3.1 June 2008 2/10