Omega TX92A, User Manual

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6
3.0 CALIBRATING THE TRANSMITTER (Continued)
An RTD calibrator may be used in place of the resistance source - refer to Figure 3-2.
Figure 3-2. Calibration Setup (RTD Simulator)
Table 3-1. Fahrenheit Temperature to OHMS Conversion Chart
Table 3-2. Celsius Temperature to OHMS Conversion Chart
1
2
3
4
5
ZS
DMM
(4–20 mA)
MONITOR
(–)
(+)
(–)
(+)
250 Ohms
INPUT
WIRE
SPAN
ZERO
RTD
CALIBRATOR
DC SUPPLY
24 VDC
V Va allu ue e M Mo od de ell N Nu um mb be err//R Ra an ng ge e
T TX X9 92 2A A-- 7 7 8 8 9 9 1 10 0
(0 to 100°C) (0 to 150°C) (0 to 250°C) (0 to 400°C)
LO IN 100 Ω 100 Ω 100 Ω 100 Ω
HI IN 138.51 Ω 157.33 Ω 194.10 Ω 247.09 Ω
V Va allu ue e M Mo od de ell N Nu um mb be err//R Ra an ng ge e
T TX X9 92 2A A-- 1 1 2 2 3 3 4 4 5 5 6 6
(-40 to 140°F) (0 to 200°F) (0 to 300°F) (0 to 500°F) (0 to 750°F) (0 to 1000°F)
LO IN 84.27 Ω 92.95 Ω 92.95 Ω 92.95 Ω 92.95 Ω 92.95 Ω
HI IN
123.24
Ω 135.85 Ω 156.96 Ω 197.71 Ω 246.74 Ω 293.56 Ω