Andover Controls LCX 890 Series User Manual

LCX 890 Installation Guide 9
Special Factors for Thermistors
You could connect a thermistor to one of the analog inputs. To keep
thermistor errors minimal, lay out your site so you can limit the length
of wire runs to the maximum for the gauge wire you select.
Table 1 shows the maximum runs for wires of various gauges to keep
errors within .5°F, .25°F, and .10°F when sensing temperatures up to
70°F.
Table 1. Wire Gauges and Corresponding Maximum Runs
for Sensing Temperatures Up to 70
°
F
Table 2 shows the maximum runs for wires of various gauges to keep
errors minimal when sensing temperatures up to 100°F.
Gauge
1
/
2
°
F Error
#20 6600 ft
#14 26,700 ft
#16 16,800 ft
#18 10,500 ft
1
/
4
°
F Error
3300 ft
13,300 ft
8400 ft
5200 ft
1
/
10
°
F Error
1300 ft
5300 ft
3300 ft
2100 ft
#22 4100 ft 2000 ft 800 ft

Andover Controls LCX 890 Series Specifications

General

Brand	Andover Controls
Model	LCX 890 Series
Category	Controller
Language	English