Detcon P-1000 - Manual (Page 26)

P-1000
Portable Model 1000 H2S Analyzer Rev. 1.0 Page 22 of 24
7.1.11 LCD Not Easily Read
1. Adjust contrast potentiometer (Section 7.2).
7.2 Display Contrast Adjust
Detcon UniTox™ sensors feature a 2-line, 16-character liquid crystal display. Like most LCD’s, character
contrast can be affected by viewing angle and temperature. Temperature compensation circuitry included in
the UniTox™ design will compensate for this characteristic, however temperature or operating voltage
extremes may still cause a shift in the contrast.
Display contrast can be adjusted by the user if necessary. To adjust the display contrast, remove the front
panel (see Figure 12) and use a small screwdriver to turn the blue contrast potentiometer adjust screw located
on the back side of the UTM circuit board (see Figure 15). Adjust per preference. The adjustment location is
marked “CONTRAST”.
Figure 15 UTM PCB
8.0 Spare/Replacement Parts
327-000000-000 Programming
Magnet
922-9900P1-000 Universal Transmitter Module (UTM)
975-P10110-240 Battery Charger
344-400000-000 12V 7Ah Battery
392-32240S-01K 0-1000ppm ISM
392-32240S-100 0-100ppm ISM
392-32240S-020 0-20ppm ISM