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Description |
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These 2-wire (loop-powered) I/P transmitters accept a
current signal (such as 4-20mA) from a DCS, PLC or
PC-based control system. They convert the current
signal to a pneumatic signal (3-15psig, 0.2-1bar,
20-100kPa, etc.) to provide precise, proportional
control of valves, actuators and other pneumaticallycontrolled
devices.
The economical IPH2 (NEMA 4X) is
watertight, dust-protected, and resistant to corrosion
and chemicals. In addition to meeting NEMA 4X
requirements, the IPX2 can be installed in explosionproof
environments.
Both units are available with an optional coalescing
filter/regulator that combines an air filter and miniature
supply line regulator with a pressure gauge that reads
in both psig and bars. |
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| Specification |
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- PERFORMANCE
Accuracy: <±0.25% of span
including the combined
effect of linearity, hysteresis
and repeatability (between
0 and 3psig output, error will
not exceed ±1.0% of span)
Stability: Not to degrade
from stated accuracy for six
months
Step Response: <0.2
seconds into 100ml load
(6 in3) from 10% to 90% of
span; Not guaranteed below
3psig output
Supply Pressure Effect:
Negligible from 20-40psig,
steady pressure
Air Capacity:
5.0SCFM minimum (20psig
supply, 0psig output)
Relief Capacity: 2.5SCFM
minimum (15psig output)
Air Supply: Instrument air
only, 20-40psig. (Must be
5psig greater than maximum
output)
Gas Supply with -NG1 or
-NG2 Option: Same
cleanliness as instrument air.
H2S not to exceed 20ppm
Air Consumption
(Dead-ended):
At 3psig output, 20psig supply,
consumes 0.08SCFM
(0.14m3/hr), maximum; At
15psig output, 20psig supply,
consumes
0.10SCFM (0.17m3/hr),
maximum; At 15 psig output,
40psig supply, consumes
0.15SCFM (0.26m3/hr),
maximum; At 30psig output,
40psig supply, consumes
0.17SCFM (0.29m3/hr),
maximum
Maximum Input: 80psig without damage for units with
output pressure rating of
>15psig; 45psig without
damage for units with output
press 15psig
Voltage Drop:
5V, maximum
Mounting Position Effect:
Negligible, unit can be
mounted in any position;
Should be mounted upright or
horizontal to keep water out if
it is not in a dry environment
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- AMBIENT CONDITIONS
Operating & Storage
Range:
-40°C to +85°C
(-40°F to +185°F)
Ambient Temperature
Effect: <±0.025% of span/ °C, maximum from
-20°C to 80°C; <±0.1% of span/°C,
maximum
RFI/EMI Effect: <±0.25% of span change at
in field strengths of 10V/m@
frequencies of 20-1000MHz
Shock and Vibration Effect:
Meets SAMA PMC 31.1 as
detailed in the field mounted
category and rated as
follows: 5-15Hz, 2mm peakto-
peak; 15-150Hz, 1g;
150-2000Hz, 0.5g
Relative Humidity:
0-100%, non-condensing
Zero & Span: Screw adjusts
zero or span by ±10%
minimum, non-interactive
IPH2: 1.14kg (2.5 lbs)
IPX2: 2.0kg (4.4 lbs)
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