Emerson 2120 - Troubleshooting; Product Certifications

Quick Start Guide
15
December 2016
9.0 Troubleshooting
Table 2. Troubleshooting Chart
10.0 Product Certifications
10.1 European Union directive information
The EC declaration of conformity for all applicable European directives for this
product can be found on page 28 and at Emerson.com/Rosemount.
10.2 Hygienic approvals and compliance
3-A
®
(authorization 3496), and EHEDG (certificate: 102016)
ASME-BPE and FDA compliant
(See “Instructions for hygienic installations” on page 26)
10.3 Overfill approval
Certificate number: Z-65.11-522.
TÜV-tested and approved for overfill protection according to the German
DIBt/WHG regulations. Certified under safety devices for tanks and piping related
to water pollution control.
10.4 Marine approvals
ABS – American Bureau of Shipping
GL – Germanischer Lloyd
SRS – Russian Maritime Registered Shipping (RMRS)
10.5 NAMUR approval
NAMUR NE95 type test is available upon request. Complies with NAMUR NE21.
Fault Symptom and indication Action and solution
Does not
switch
No LED; no power
Check the power supply; (check load on direct load
switching electronics model)
LED flashing See “LED indication” on page 13
Fork is damaged Replace the Rosemount 2120
Thick encrustation on the forks Clean the fork with care
5 second delay when changing
mode/delay
This is normal – wait 5 seconds
Incorrect
switching
Dry = On, Wet = On set correctly Set the correct mode on the electronics cassette
Faulty
switching
Turbulence Set a longer switching time delay
Excessive electrical noise Suppress the cause of the interference
Cassette has been fitted from another
Rosemount 2120
Fit the factory supplied cassette and then
calibrate
(1)
1. Refer to the “Replacement and Calibration of Electronic Cassettes” section in the Rosemount 2120
Reference Manual
or Manual Supplement.