Level Measurement
Point level measurement — Capacitance switches
Pointek CLS500
4/67
Siemens FI 01 · 2014
4
■
Technical specifications
1)
When operation is in areas classified as hazardous, observe restrictions
according to relevant certificate.
See also Pressure/Temperature curves on page 4/74.
2)
Thermal isolator is used if process connection temperature exceeds 85 °C
(185 °F)
Input
Measuring range 0 ... 330 pF
Span Min. 1 pF
Output
Solid-state switch
• Output Galvanically isolated
• Protection Against reversed polarity
(bipolar)
• Max. switching voltage • 30 V DC
• 30 V peak AC
• Max. load current 82 mA
• Voltage drop < 1 V, typical at 50 mA
• Time delay
(pre or post switching)
1 ... 60 s
Current loop 4 ... 20 mA/20 ... 4 mA
Accuracy (transmitter)
Temperature stability 0.15 pF (0 pF) or < 0.25 %
(typical < 0.1 %) of actual
measurement value, whichever is
greater over the full temperature
range
Non-linearity and repeatability 0.1 % of full scale and actual
measurement respectively
Accuracy Deviation < 0.1 % of measured
value
Rated operating conditions
1)
Installation conditions
- Location Indoor/outdoor
Ambient conditions
• Ambient temperature (transmitter) -40 ... +85 °C (-40 ... +185 °F)
2)
• Installation category I
• Pollution degree 4
Medium conditions
• Relative dielectric constant H
r
Min. 1.5
• Process temperature Temperature ratings are pressure
dependent.
See Pressure/Temperature curves
on page 4/74.
- Standard (PFA) -50 ... +200 °C (-58 ... +392 °F)
- High temperature stainless steel
version with thermal isolator
-60 ... +400 °C (-76 ... +752 °F)
- Cryogenic version -200 ... +200 °C (-328 ... +392 °F)
for details.
Process pressure Pressure rating of process seal is
temperature dependent.
See Pressure/Temperature curves
on page 4/74.
• Standard (PFA) -1 ... +150 bar g
(-14.6 ... +2 175 psi g)
• High temperature version (stain-
less steel)
-1 ... +35 bar g
(-14.6 ... +507.6 psi g)
Design
Material
• Wetted parts material
- Standard rod 316L stainless steel
• Probe isolation (rod) PFA
Probe diameter
• Standard rod version (PFA) 16 mm (0.63 inch)
• High temperature rod version
(stainless steel)
19 mm (0.75 inch)
Probe length
• Standard rod version (PFA) Max. 1 000 mm (39.4 inch) with
16 mm (0.63 inch) diameter
probe
• High temperature rod version
(stainless steel)
Max. measuring length 1 000 mm
(39.4 inch) with 19 mm (0.75 inch)
diameter probe
Process connection of probe
• Threaded mounting NPT [(Taper), ANSI/ASME
B1.20.1]
R [(BSPT), EN 10226/PT (JIS-T),
JIS B 0203]
G [(BSPP), EN ISO 228-1/
PF (JIS-P), JIS B 0202]
• Flange mounting ASME, EN 1092-1
Enclosure
• Material Aluminum, epoxy-coated (stain-
less steel option available.
• Cable inlet 2 x ½" NPT
• Degree of protection Type 4X/NEMA4X/IP65, IP68
Power supply Max. 33 V DC
Features
Measurement current signaling NAMUR NE 43
Safety • Inputs/outputs fully galvanically
isolated
• Polarity-insensitive current loop
• Fully potted
• Integrated safety barrier
• Diagnostics with fault alarm when: Primary variable (PV) out of limits,
system failure in measurement
circuit, deviation between A/D
and D/A converter, check sum,
watch dog and self-checking
facility
• Function rotary switch Positions 0 ... 9, A ... F
• SMART communication Conforming to HART
Communication Foundation
(HCF)
Certificates and approvals
• General Purpose CE, CSA/FM, C-TICK
• Non incendive/Non sparking CSA/FM Class I, Div. 2, Groups A,
B, C, D T4
ATEX II 3G 2D EEx n A [ib] IIC T6
to T4 T100 °C
• Dust Ignition Proof CSA/FM Class II and III, Div. 1,
Groups E, F, G T4
ATEX II 1/2 GD EEx d [ia] T6 to T1
T100 °C
• Explosion Proof FM Class 1, Div. 1, Groups A, B,
C, D T4
ATEX II 1/2 GD EEx d [ia] IIC T6
to T1 T100 °C
• Marine Lloyds Register of Shipping,
Categories ENV1, ENV2, ENV3,
ENV5, Bureau Veritas
© Siemens AG 2013