K-Patents PR-23-SD Generation 1 - Manual (Page 25)

Safe-Drive™ Process Refractometer PR-23-SD Best Practices, Generation 1
© Copyright K-Patents 2013. All rights reserved.
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4.13 Installing DTR Transmitter
The indicating transmitter DTR is a specialized computer designed to process data received
from one or two sensors. The transmitter consists of a protecting enclosure, a front panel, an
LCD display and a keyboard. Knockout padlock provisions are included for locks to prevent
unauthorized access.
Figure 12 DTR transmitter
● DTR transmitter location:
● easily accessible
● well lit, but no direct sunlight
● dry
● ambient temperature range of the transmitter is 0–45 °C (32–113 °F)
● free of vibration or other such disturbances
● Consider the interconnecting cable length when choosing the installation location.
The standard delivery is 10 meter (33 feet) of cable and the maximum allowed
length is 200 meters (660 feet). You can use your own cable as long as it meets IEC
61158-2 type A standard requirements. For more information, please refer to chapter
Interconnecting cable specifications in K-Patents user documentation.
● Consider installing a drip shield to protect the transmitter from rain, sun and dust,
especially if the transmitter is installed outside.
WARNING: The transmitter does not have a built-in power switch so it is always powered
when connected to a power source. K-Patents recommends mounting an external power
switch to control the power supply.
To install the transmitter
1. Install the transmitter vertically on an upright surface (wall) using the four mounting feet,
preferably on the eye level of the user.
WARNING: Do not drill mounting holes in the enclosure. That would affect the
protection class of the enclosure and damage the electronics.
2. Connect the PR-23-SD sensor:
● Remove the four (4) screws holding the sensor nameplate.
● Connect the signal wires to terminals 1 and 2.