960-58A0-031 Datasheet, PDF (3/8 Pages) Magnetrol International, Inc. – Echotel® Model 960 AS-Interface® Ultrasonic Level Switches

ADVANCED SELF-TEST
Ultrasonic switches are often used as the
last means of detecting whether a
process vessel will overflow and cause a
spill of potentially hazardous liquids, or
empty out and possibly cavitate the
pumps. In these critical applications it is desirable to have
a method of periodically testing the ultrasonic switch.
Model 960 switches feature an advanced self-test technol-
ogy that not only tests the electronics, transducer, and
piezoelectric crystals, but also tests for the presence of
industrial sources of environmental noise. Should the
switch detect any problems, a malfunction output is gen-
erated to alarm the user, and a red fault LED is lit to indi-
cate an alarm condition.
Self-test is performed automatically and continuously sev-
eral times per second to verify proper operation of the
ultrasonic switch. In addition, a push button is provided
to initiate a manual self-test mode. Pressing this test button
stops all transmit pulses, which simulates an electronics
failure.
Taking diagnostics one step further is the unique noise
self-test mode feature that is standard in all 960 switches.
This tests for electromagnetic and acoustical noise that
can influence many instrumentation technologies. If high
levels of environmental noise are detected, the electron-
ics reports a fault condition to alert the user of potential
instrumentation reliability concerns.
AGENCY APPROVALS
AGENCY
FM
CSA
ATEX
AS-i
APPROVED MODELS
960-58AX-030 or
960-58AX-031
with transducers
9X1-XXXX-XXX
PROTECTION METHOD
Explosion Proof
AREA CLASSIFICATION
Class I, Div. 1,Groups B, C, & D
Class II, Div. 1, Groups E, F, & G
Class III, Type 4X, IP 66, T6
960-58AX-07X or
960-58AX-03X
with transducers
9X1-XXXX-XXX
Non-Incendive
Class I, Div. 2,Groups A, B, C, & D
Class II, Div. 2, Groups F & G
Class III, Type 4X, IP 66, T4
IP67 for 304 Stainless Steel Housing
960-58AX-030 or
960-58AX-031
with transducers
9X1-XXXX-XXX
Explosion Proof
Class I, Div. 1,Groups B, C, & D
Class II, Div. 1, Groups E, F, & G
Class III, Type 4X, IP 66, T6
960-58AX-07X or
960-58AX-03X
with transducers
9X1-XXXX-XXX
Non-Incendive
Class I, Div. 2,Groups A, B, C, & D
Class II, Div. 2, Groups E, F, & G
Class III, Type 4X, IP 66, T4
IP67 for 304 Stainless Steel Housing
960-58AX-0C0 or
960-58AX-0C1
with all metallic
transducers*
Flame Proof
II 1/2 G, EEx d IIC T6
These units have been tested to AS-Interface Specification
EN50295 and IEC 62026-2, and have met the demands of the
AS-Interface Test Requirements. AS-Interface certificate #76401
*Consult factory for model numbers
These units have been tested to EN 61326 and are
in compliance with the EMC Directive 89/336/EEC.
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