Omega Products PXTX-4900-230 User Manual
HIGH-ACCURACY ISOLATED
TRANSMITTERS
ISOLATE mA, DC, AND Vdc SIGNAL INPUTS
PXTX Series
See Section Y for a
Selection of Scientific,
Technical, and Reference
Books Available from
omega.com
All Models
$
270
⻬ Voltage Input with
Current Output or
Current Input with
Voltage Output
⻬ 1500 Vrms of
CMV Isolation
⻬ Factory Calibrated for
Accuracy of ±0.1%
⻬ Operates from 115 Vac
50/60 Hz or 230 Vac
⻬ Rugged Epoxy-
Encapsulated Design
OMEGA®PXTX-4900 and
PXTX-4901 transmitters isolate a
4 to 20 mA current loop from the
0 to 10 Vdc signal and the power
line. They are ideal for eliminating
ground loops and common-mode
signals. In the PXTX-4901, which
converts 4 to 20 mA to 0 to 10 Vdc,
the input resistance is less than
50 Ω, generating less than 1V loop
voltage drop at 20 mA loop current.
The PXTX-4900 converts a 0 to
10 Vdc to a 4 to 20 mA output
signal. For both models, the 400 Hz
frequency response provides a
settling time of less than 0.003
seconds to 0.1%, which prevents
signal degradation. Both models
are completely encapsulated for
use in rugged environments.
Protected against shock and
vibration, they will provide years
of reliable and accurate operation.
All connections are easily made
using the conveniently located
barrier strips.
PXTX-4900,
$270, shown
actual size.
SPECIFICATIONS
PXTX-4900 Input: 0 to 10 Vdc
Output: 4 to 20 mA
Loop Resistance: Up to 1000
Loop Compliance: 20 V maximum
PXTX-4901 Input: 4 to 20 mA
Output: 0 to 10 Vdc
Load Resistance: 2000 Ω minimum
Load Capacitance: 0.01 µF
Isolation: 1500 Vrms 50/60 Hz
Capacitance Line to Input
or Output: 30 pF
Input to Output: 80 pF
Accuracy: ±0.1% of span maximum
Nonlinearity: ±0.05% of span
Temperature Stability 0 to 55°C:
Span: ±35 ppm/°C
Zero: ±50 ppm/°C of span
Input Resistance:
PXTX-4900: >10 MΩ
PXTX-4901: 47.6 ±0.3% Ω
Input Current Maximum:
PXTX-4900: 7 mA
PXTX-4901: 70 mA
Response: 3 dB bandwidth
400 Hz typical
Rise Time: 10 to 90% 0.9 ms typical
Settling Time: To 0.1% < than 3 ms
Noise: 0.1 Hz to 400 Hz <0.01%
rms of span
CCMR: 100 dB
Power Requirements: 105 to 125 Vac
50/60 Hz, 3.2 VA (230 Vac optional)
Operating Temp: -20 to 70°C
(-4 to 158°F)
Storage Temp: -20 to 85°C (-4 to 184°F)
Size: 95.25 L x 50.80 W x 72.90 mm H
(3.75 x 2 x 2.87")
Weight: 540 g (19 oz)
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
MODEL NO. PRICE INPUT / OUTPUT (POWER)
PXTX-4900 $270 0 to 10 Vdc/4 to 20 mA transmitter (115 Vac)
PXTX-4901 270 4 to 20 mA/10 Vdc transmitter (115 Vac)
PXTX-4900-230 270 0 to 10 Vdc/4 to 20 mA transmitter (230 Vac)
PXTX-4901-230 270 4 to 20 mA to 0/10 Vdc transmitter (230 Vac)
Comes complete with operator’s manual.
Ordering Examples: PXTX-4900, 0 to 10 Vdc input and 4 to 20 mA output, $270.
PXTX-4901, 4 to 20 mA input and 10 Vdc output, $270.
Recommended Reference Book: The Engineering Handbook,
EE-2455, $175. Visit omega.com/bobi for Additional Books
C-20
ACCESSORIES
C
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