Ohms - Advantech ADAM 4000 Series User Manual

B.1.4

Ohms

To indicate ohms, set bits 0 and 1 of the data format/checksum/integration time
parameter to 11.
The ohms format allows you to read the value of the RTD resistance in ohms. It con-
sists of a "+" or "-" sign followed by five decimal digits and a decimal point. The reso-
lution (position of the decimal point) of Platinum-Nickel RTDs is 10 m Ω. (two decimal
places).
For example, a 100 Ω platinum RTD specified for -100°C to +100°C has +100°C cor-
responding to +138.50 Ω and -100o C corresponding to +060.60 Ω.
The measurable resistance values are as given below:
The format is Type, Bottom Tem. (ohm) ~ Top Temp. (ohm)
BA1
PT-100 (0.385)
PT-100 (0.392)
PT-100 (0.385)
PT-100 (0.392)
PT-100 (0.385)
PT-100 (0.392)
PT-100 (0.385)
PT-100 (0.392)
PT-100 (0.385)
PT-100 (0.392)
PT-1000
Balco-500
Ni604-518
Ni604-518
Ni508A
Ni508B
-200(7.95) ~ 600(145.85)
-50(80.31) ~ +150(157.31)
-50(79.96) ~ +150(158.29)
0(100.00) ~ +100(138.50)
0(100.00) ~ +100(139.16)
0(100.00) ~ +200(175.84)
0(100.00) ~ +200(177.13)
0(100.00) ~ +400(247.04)
0(100.00) ~ +400(249.56)
-200(18.49) ~ +200(175.84)
-200(18.49) ~ +200(177.13)
-40(842.7) ~ +160(1610.4)
-30(397.05) ~ +120(723.44)
-80(410.73) ~ +100(917.33)
0(604) ~ +100(917.33)
0(507) ~ 100(772)
-50(400.14) ~ 200(1099.89)
225 ADAM-4000 Series User Manual