7
Hysteresis Mode
Hysteresis mode operates similarly to point set mode but allows the user to set a wider
hysteresis band. The digital output is enabled when pressure rises above H1 or H2 and is
disabled when pressure falls below L1 or L2. For information on setting H1, H2, L1 and L2, see
“Setting Digital Outputs”.
Normally-Open Contact Mode
Normally-Closed Contact Mode
Window Comparator Mode
In window comparator mode, the digital output is enabled when pressure rises above L1 or L2
plus system hysteresis and disabled when pressure rises above H1 or H2 plus system
hysteresis. As pressure decreases, the output is enabled when pressure drops below H1 or H2
and disabled when pressure drops below L1 or L2. For information on setting H1, H2, L1 and
L2, see “Setting Digital Outputs”. To ensure proper function, the difference between H1 and L1
or H2 and L2 must be greater than the system hysteresis, H
(see “Advanced Settings”).
Normally-Open Contact Mode
Normally-Closed Contact Mode
H = System hysteresis
Analog Output Characteristics
DPS series switches are available with either 1-5V or 4-20mA analog output signals. The analog
output signal is proportional to the full pressure range of the DPS series switch. Output signals
for 1-5V and 4-20mA models are plotted against pressure below.
1-5V Models
4-20mA Models
