TCA_Compact_Temperature_switches_Riels0 pages
TCA
COMPACT
TEMPERATURE
SWITCHES
TEMPERATURE
Compact temperature switches
explosionproof Execution
Electric construction
Degree of protection: IP65 (NEMA 4).
Mode of protection:
- Explosion-proof: Ex-d IICT6 andT4
- Dust-protected enclosure: Ex-tD A2I IP65T85 andTI 35
Electrical safety class: class I (EN61298-2:1997-06)
Enclosure
Case and cover copper free aluminium alloy, threaded coupling with tam-
per proof device. Epoxy exterior painting, grey colour
Cable entry: 1/2-14 NPT-F (std) (see point 4).
Terminal block: suitable for wires section 1,5 mm2 (minimum 0,5 mm2).
Insulating material toVDE standard.
Earthing screws: one Inside, one outside.
Max section of earthing wires: 4 mm2.
Electric contacts
(See point 1.4) One micro, SPDT or DPDT, with fixed dead band.
Sensor
Vapor tension system to SAMA II C or II A, consisting of:
- Bulb AISI 316.
- Connection AISI 304 compression fitting with adjustable
nsertion length.
- Capillary AISI 3 I 6 with stainless steel flexible armor
Ranges
-30 to + 250°C, (see point 2).
Set point
Adjustable throughout the range.
Repeatability: better than I % of span.
Scale: the Instrument Is fitted as std. with an approximate scale of the set
point Indication.
Mounting
- Direct, sensortype B.
- Remote at surface (std.) or 2" pipe (with optional bracket), sensors type
C, Q, R.
Ambient temperature (operative limit1):
Ambient temperature -40/+85°C
Equipment
Certified according to
Directive ATEX 94/9/EC Group II Category 2GD Annex lll + IV
) In accordance with ISA S5 I.
(£^) AT f / GAS Ex-d DUST Ex-tD
Gr. II Cat. 2 GD
IP65
Dimensions (mm) e weights (kg)
to
66
A*
0 9.S
ffl
4tf
i | |
20 | |
t |
X
1
REMOTE (SENSORTYPE "C/Q/R") DIRECT (SENSORTYPE "B")
= bulb connection
E = cable entry
Weight: I kg
Riels Instruments Sri . W +39 049 8961771 - A +39 049 7l7368 .www.riels.it. info@riels.it
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