Specifications and Reference Data
May 2016
Reference Manual
00809-0100-4530, Rev DD
226
Specifications and Reference Data
A.2 Performance specifications
A.2.1 General
Reference conditions
Single Standard probe, 77 °F (25 °C) in water (DC=80) and
ambient pressure in a 4-in. pipe using Trim Near Zone
function.
Reference accuracy
(1)
± 0.12 in. (3 mm) or 0.03% of measured distance, whichever
is greatest
Repeatability
± 0.04 in. (1 mm)
Ambient temperature effect
± 0.008 in. (0.2 mm) /°K or ± 30 ppm/°K of measured value,
whichever is greatest
Electromagnetic interference effect
(2)(3)(4)
Shielded cable: ± 0.2 in. (5 mm)
Unshielded cable: ± 2 in. (50 mm)
Update interval
Minimum 1 update per second
A.2.2 Environment
Vibration resistance
Aluminum housing: IEC 60770-1 Level 1
Stainless Steel housing: IACS E10
Electromagnetic compatibility
Emission and Immunity: EMC directive 2004/108/EC,
EN61326-1:2006 and EN61326-3-1:2006. NAMUR
recommendations NE21
CE-mark
Complies with applicable directives (EMC, ATEX).
Built-in lightning protection
EN 61326, IEC 61000-4-5, level 2kV (6kV with T1 terminal
block)
Contamination/product build-up
Single lead probes are preferred when there is a risk of
contamination (because build-up can result in the
product bridging across the two leads for twin versions;
between the inner lead and outer pipe for the coaxial
probe).
For viscous or sticky applications, PTFE probes are
recommended. Periodic cleaning may also be required.
For viscous or sticky applications, it is not recommended
to use centering discs mounted along the probe.
Signal Quality Metrics (option code D01, or DA1) can be
used in determining when to clean the probe.
Transmitters equipped with the Diagnostics Suite option
can calculate Signal Quality Metrics.
Maximum error due to contamination is 1-10%
depending on probe type, dielectric constant,
contamination thickness and contamination height
above product surface.
Table A-5. Maximum Recommended Viscosity
and Contamination/Build-up
1.
For probes with spacers, the accuracy may deviate close to the
spacers. Accuracy may be affected by remote housing.
2.
Deviation through electromagnetic interference according to EN
61326.
3.
For F
OUNDATION
Fieldbus units it may be required to ground the signal
cable shield at the power supply and transmitter to achieve
optimum performance.
4.
Thresholds may need to be adjusted, see
for general guidelines on manual threshold settings.
Coaxial
Twin
lead
Single lead
Maximum
viscosity
500 cP
1500 cP
8000 cP
(1)(2)(3)
1. Consult your local Emerson Process Management
representative in the case of agitation/turbulence and
high viscous products.
2. Be cautious in HTHP viscous or crystallizing media
applications where temperature at instrument
connection is significantly lower than process
temperature with risk of coating in the upper part of probe
that may reduce the measurement signal. Consider using
HP or STD probes in such applications.
3. For viscous or sticky applications, it is not recommended
to use centering discs mounted along the probe.
Contamination/
build-up
Not
recommended
Thin
build-up
allowed,
but no
bridging
Build-up
allowed
