4-20mA Option For Hallett 30
Released on 19/Aug/16 - X800099E
Page 2 UV Pure Technologies Inc. © 2016
Applications
The Crossfire Technology® embedded within the Hallett units (See Figure 3),
allows for both a UV Intensity and Net UV Transmittance (UVT) signal to be
provided. The 4-20mA option provides these two analog signals. It is a loop-
powered transmitter that can be used with any device that requires a 4-20mA
signal for logging purposes or for process control. The device is installed On
Board (see Figure 1) but used only for Hallett 30s.
Product Features
1.
LCD Display
- A 2.5
” LCD display is a standard feature indicating both
input values and transmitted values
– see Figure 1
2.
UV Intensity Output
– A signal proportional to the UV intensity of the
UV lamp is transmitted.
3.
Net UV Transmittance (UVT) Output
– A signal proportional to the
Net UV Transmittance of the water is transmitted.
4.
Factory Calibrated
– Both span and offsets are preset for immediate
field use.
5.
Mounted On Board
– The 4-20mA unit is typically installed within the
Hallett 30 unit with the display located on the front panel - see Figures
1 & 2.
