Page EN-14
Pointek ULS200 – QUICK START MANUAL
7ML19981XB83
mmmmm
English
Relay Delay
Relay Deadband (Reset)
Blanking
Adjust the time delay, in seconds, from when the material reaches the relay level and the relay is
actuated. If the material level withdraws from the setpoint level, the delay is reset to 0.
The set time delay applies to both relays and all functions except `Loss OF Echo'.
Factory setting: 0 seconds.
Deadband (hysteresis) prevents relay chatter due to material level fluctuations at the set point. These
fluctuations are often waves or turbulence on a fluid's surface caused by agitators in the tank.
Once a relay is tripped, the detection level must move beyond the deadband value before it is reset. The
direction in which the deadband is measured depends on the application of the relay. If the relay is for a
high state then the deadband is measured below the set point. If the relay is for a low state then the
deadband is measured above the set point. Refer to the diagram below.
Deadband 1 is used for Relay 1 and Deadband 2 is used for Relay 2. The deadband value is entered in
the units selected, and applies to both relays and all alarm or control functions except `Loss Of Echo'.
Factory setting: 0.05 m (0.16 ft)
Blanking is used to ignore the zone in front of the
transducer where false echoes are at a level that
interfere with the processing of the true echo. It is
measured outward from the sensor face.
The minimum recommended blanking value is 0.25 m
(0.82 ft) but can be increased in order to extend the
blanking.
Factory setting: 0.20 m (0.66 ft)
on setpoint
deadband
off
high/high-high alarm
low/low-low alarm
deadband
off
ULS200
blanking
Summary of Contents for pointek uls200
Page 1: ...Quick Start Manual March 2010 ULS200 pointek...
Page 2: ...IQ300IX fm Page 5 Tuesday October 2 2001 1 43 PM...
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