Emerson IFT9701 - Manual (Page 75)

Model IFT9701 Transmitter Instruction Manual 67
IFT9701 Specifications continued
HA
R
T
Me
n
u
T
re
e
s
Retu
rn
P
o
li
c
y
Op
tio
n
al Di
sp
la
y
Spec
ifications
20 to 30 VDC
• 6 watts typical, 14 watts maximum
• Fused at 60 V/1.8 A Trip
• Minimum startup voltage is 16 V at transmitter terminals
• Maximum total resistance for wiring is 13
ohms
• At startup, transmitter power source must provide a minimum of 0.7 amp of short-term current
A.3 Environmental limits
A.3.1 Temperature
Operating
See Process fluid vs. ambient temperature, below
Optional local display may become difficult to read below +14 °F (–10 °C).
Storage
–40 to +185 °F (–40 to +85 °C) without optional LCD
–4 to +58 °F (–20 to +70 °C) with optional LCD
A.3.2 Process fluid temperature limits
Integrally mounted transmitter
–40 to +257 °F (–40 to +125 °C)
See Process fluid vs. ambient temperature, below.
Remotely mounted transmitter
Refer to temperature limits for sensor.
Process fluid vs. ambient temperature
At their upper limits, process fluid temperature and ambient temperature restrict each other. The
graphs provided below define the maximum recommended process fluid temperature based on
maximum expected ambient temperature.