BABBITT LS7500, Руководство пользователя, Страница: 4 / 20

www.babbittinternational.com Reference Manual
2021
4
LS7500 PRESENCE/ABSENSE SWITCH
1. DESCRIPTION
1.1 General Description
The LS7500 Presence/Absence Detector is an adjustable, radio frequency impedance sensing device,
which can be used to detect the presence or absence of material inside a pipe. The basic unit is made up of
a solid stainless-steel flange attached to an explosion proof housing. Inside the explosion proof housing are
all calibration adjustments and sensing electronics. The unit is calibrated in the absence of material and an
internal relay changes state when material is detected.
1.2 Specifications
Electrical
Power: 115 VAC (±15%) 50/60 Hz. 2 watts, standard.
(12 VDC, 24 VDC or 230 VAC optional)
Output: 2 Form C contacts, DPDT relay, 5 amp resistive
At 125, 250 VAC; 30 VDC
Fuse: On board, 250 mA @ 125 volts
Fail Safe:
Selectable high or low level
Time Delay:
Selectable: ON or OFF delay
Adjustable: 1/8 sec to 2 hrs.
RF Frequency: Approximately 1.3 MHz
Environmental
Enclosure: Cast Aluminum, Class I, Groups C & D; Class II, Groups E, F & G
Temperature: Probe: -30° F to 180° F **
Electronics: -40° F to 185° F
Pressure: Probe: 200 psi @ 75° F**
(**Higher ranges available, consult factory)
Construction: Flange: All wetted parts, 316 SS, Teflon (or UHMWPE) and Viton.
Electronics: Housed in cast aluminum explosion proof enclosure.
Specifications subject to change without notice