Datasheet

Page 11-4 Sales: 763-571-3121 ¨ Fax: [phone] ¨ www.minco.com Minco Bulletin TS-103
Elements
Elements
Elements
Installation and Accessories
Ceramic elements can be assembled into
probes or potted inside holes in heat
sinks and platens. Ceramic cement is
recommended for high temperature
potting. Epoxy is recommended for
intermediate temperatures.
Round elements will provide the best time
response in round sheaths and holes.
Flat thin film elements can be bonded to
surfaces.
Elements are calibrated at the end of their
leads. The leads have resistances
ranging from 0.6 to 2.4 W per foot, so you
should connect extension leads as close
as possible to the end of the element
leads to maintain tolerance.
Minco can supply elements with
extension leadwires welded onto the
sensor leads. Use the standard models
below or contact us for a quote on your
custom design.
One final note: Ceramic elements are
fragile and can suffer damage or loss of
accuracy from improper installations. In
many cases, the best alternative is to buy
a complete encased probe assembly
from Minco. Take advantage of our
expertise and equipment for best overall
performance and value.
#8 high temperature cement
#8 comes as a powder in 1 oz.
packages. Just add water to form a
potting compound rated to 850°C
(1562°F).
Extension leads
All elements are available with factory-welded extension leads insulated with PTFE,
polyimide, or mica/glass.
Insulation Max.
temp.
Lead
AWG
Max. diameter over lead bundle
in inches (mm)
Model
2 leads 3 leads 4 leads
PTFE, PTFE tubing over
connections
200°C
(392°F)
22 0.136 (3.45) 0.143 (3.63) 0.157 (3.99)
AC887
24 0.122 (3.10) 0.124 (3.15) 0.147 (3.73)
26 0.113 (2.87) 0.119 (3.02) 0.123 (3.12)
28 0.110 (2.79) 0.116 (2.95) 0.118 (3.00)
30 0.100 (2.54) 0.101 (2.57) 0.103 (2.62)
Mica/glass, glass braid
over connections
550°C
(1022°F)
22 0.157 (3.99) 0.192 (4.88) 0.195 (4.95) AC888
Polyimide, PTFE tubing
over connections
200°C
(392°F)
22 0.123 (3.12) 0.141 (3.58) 0.148 (3.76)
AC889
26 0.116 (2.95) 0.131 (3.33) 0.132 (3.35)
30 0.095 (2.41) 0.102 (2.59) 0.107 (2.72)
Glass braid, glass braid
over connections
550°C
(1022°F)
27 solid
leads
0.100 (2.54) 0.117 (2.97) 0.130 (3.30) AC101828
How to order extension leads
AC887 Model Number
Z Number of leads:
Y = 2 leads
Z = 3 leads
X = 4 leads
26 Lead gauge (AWG)
L
48 Lead length in inches
AC887Z26L48 ¬ Sample P/N
Custom elements
Shown below are examples of custom design:
•
A dual ceramic sensor used for air flow sensing
•
Two resistor-style RTDs