Fluke Hart Scientific 9150, Руководство пользователя

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Parts and Controls
6.3 Constant Temperature Block Assembly
6
6-3
6.3 Constant Temperature Block Assembly
The constant temperature block assembly is shown in Figure 3 and consists of
removable inserts.
fig-3.eps
Figure 3. Removable Inserts
6.3.1 Constant Temperature Block
The “Block” is made of aluminum-oxide and provides a relatively constant and
accurate temperature environment for the sensor that is to be calibrated. A 1.25-
inch diameter well is provided that may be used for sensors of that size or may
be sleeved down with various sized multi-hole probe sleeves. Heaters sur- round
the block assembly and provide even heat to the sensor. A Type S thermocouple
is used to sense and control the temperature of the block. The entire assembly is
surrounded by a heat reflector to thermally isolate the chassis and electronics.
6.3.2 Probe Sleeves and Tongs
The calibrator is supplied with a multi-hole aluminum-oxide probe sleeve and
insulator sleeve for insertion into the calibrator well and tongs for removing
sleeves. Probe sleeves of various hole sizes are available to allow the user’s
probe to fit snugly into the well whatever the diameter of the probe.
Insert A and an insulator is provided unless otherwise indicated. The inserts are:
•
Insert A Model 3150-2 (variety block): 1/2”, 1/4”, 3/8”, 3/16”, 1/8”, and 1/16”
holes
•
Insert B Model 3150-3 (comparison block): two each 3/8”, 1/4”, and 3/16”
holes
or
•
Insert C Model 3150-4 (1/4” comparison block): six 1/4” holes
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