Ametek Land U1 1100/2900F, User Manual

Page: 16 / 36

Page 10
Thermometer User Guide
3 Installing the Thermometer
This section contains similar information to the thermometer Installation
Guide.
If the thermometer is to be used in conjunction with a protection jacket and
air purge, refer to the installation guides provided with those accessories.
If the thermometer is to be installed in a location where the ambient
temperature is within the ranges specified for the thermometer, and no air
purging is required to keep the lens clean, the thermometer can be mounted
using the two tapped holes on the mounting pad. Either hole can be used for
direct tripod mounting.
3.1 Choosing a location for the thermometer
If your thermometer is an ‘U’ series thermometer (e.g. U1 600/1600C),
it must be positioned such that, at the chosen target distance, the target
is large enough to completely fill the area covered by the graticule of the
eyepiece (Refer to Section 3.1.1). The thermometer’s view of the target area
must not be obstructed.
If your thermometer is a ‘V’ series thermometer (e.g. V1 1000/2600C),
it is not essential for the target to completely fill the area covered by the
graticule.
The overall dimensions of the thermometer installation are given in Fig. 4.
3.1.1 Target size calculation
There are two types of lens available for use with the UNO thermometer.
Standard lens:
Focusable from 500mm to infinity denoted [VG/VC]
Short focus lens: Focusable from 350mm to 1000mm denoted [SG/SF]
For both lenses, the target area is defined as the area covered by the graticule.
To calculate the minimum target size at any distance, refer to Fig. 5.