11
Rosemount 65Q
September 2014
www.rosemount.com
Identification data
The model and serial numbers are marked on each sensor.
Ingress Protection (IP) ratings
The particular rating is applicable only for complete assemblies
including a connection head and tubular thermowell. IP varies
from 65 to 68 due to a wide selection on different connection
heads, DIN A and B size, made of different materials such as
aluminum, polyamide, and stainless steel.
System components
Sensor
The 65Q sensor consists of an exchangeable mineral-insulated
measuring insert, wherein a small, drop-form thin film RTD
element is encapsulated. This design protects the relatively
strain-free element, thereby maintaining accuracy and
long-term stability. The sensor is mounted into a swaged or
straight stainless steel sheath. The sensor outer diameter is 3.2
mm. The minimum sensor length for an exchangeable sensor is
100 mm. The RTD sensor is fitted into a housing with connection
head and welded thermowell.
Extension
Standard material Stainless Steel 1.4404 (316 L)
Standard diameter of 10 mm
Preferred standard lengths; 50, 65, and 130 mm
Thermowell
Thermowell stem styles
Straight thermowell with an outer diameter of 6 mm diameter
must be used for immersion lengths less than 50 mm
More stable Stepped Thermowell with an outer diameter of
10mm reduced to 6 mm must be used for immersion lengths
greater than 50 mm (65 mm on parallel thread G
1
/
2
-in.
(
1
/
2
-in. BSPF))
Thermowell materials
Stainless Steel 1.4404 (316L) for hygienic applications
Thermowell surface qualities
R
a
< 0,8 μm as standard, electropolishing
R
a
< 0,4 μm optional, electropolishing
Connection heads (see
Table 2
)
The connection heads can be of different types (size DIN A and
B) and materials (plastic, aluminum, stainless steel). Its fitting to
the rest of the probe and the gland for the cable entry, assure an
IP grade of 65 at minimum. All supplied heads have a process
connection M24x1.5.
Polished stainless steel DIN A (sanitary applications)
Smoothly contoured design which minimizes crevices for easy
wipe-down
Sanitary Stainless Steel housing for easy-to-clean applications
Mounting of one DIN A or B sized transmitter on DIN plate
Local indication with integral LCD Display Meter
Polished stainless steel DIN B (sanitary applications)
Smoothly contoured design which minimizes crevices for easy
wipe-down
Sanitary Stainless Steel housing for easy-to-clean applications
Mounting of one DIN B sized transmitter on DIN plate
Rosemount aluminum DIN A
Rosemount design
Mounting of one or two transmitters on DIN plate and for
second one optional by the use of extension ring
TZ-A/BL (BUZH)
DIN B head with enlarger space for mounting a DIN A size
(644H) or DIN B size transmitter into the cover by the use of
terminal block or two transmitters with flying lead sensors
GR-A/BL (BUZ)
DIN B head with enlarger space for mounting a DIN A size
(644H) or DIN B size transmitter on DIN plates
TZ-A/BK
DIN B head with enlarger space for mounting a DIN A size
(644H) or DIN B size transmitter into the cover by the use of
terminal block or two transmitters (248H) with flying lead
sensors
Suggested for use in high humidity environments and at low
temperatures to avoid problems due to condensation
