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FT5040: DC 4-20mA Input w/ Loop Excitation
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NEMA
4X Splash Proof Enclosure
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Optional
3 1/2 Digit Display
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Provides
24Vdc Power to Input Loop
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4/20mA
Input Standard - Others Available
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Input/Output
Isolated
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Urethane-Coated
Circuit Boards
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AC
or DC Power Options
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The Model FT5040 DIN-Rail Transmitter provides an isolated DC
voltage or current output proportional to a 4/20mAdc input. Designed
to isolate and convert signals from 2-wire (loop-powered)
transmitters, it includes a regulated 24Vdc input loop supply.
A rugged NEMA 4X splash proof, corrosion-resistant housing
protects the transmitter in outdoor and industrial environments. The
circuit boards are urethane coated for protection against
condensation and contaminants. Model FDT5040 includes a 3-1/2 digit
user-rangeable display to provide local process indication in
engineering units.
Other input ranges are possible. For example, the FT/FDT5040 may
be used with DC-powered "3-wire" sensors and transmitters
whose supply currents do not exceed 25mA. Input/output isolation
overcomes the ground loop problems sometimes encountered with
non-isolated DC-powered transmitters.
Available options include AC and DC power choices and
reverse-acting transmitter (decreasing output with increasing
input).
ORDERING INFORMATION
| Model
Numbers: |
FT5040:
Transmitter only. FDT5040: Transmitter with display. |
| Input
Range: |
Select 4/20mA for
use with 2-wire inputs, or any other range allowed by the
"Input Capabilities" spec, below. |
| Output
Range: |
Specify any DC voltage or current range allowed by the
"Output Capabilities" spec, below.
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Display
Range:
(optional) |
Specify display
reading at low end and at full scale, including decimal
point if required. See "Display Capabilities"
specification, below. Note that reverse-acting display is
possible - full scale reading downscale from low end.
Display may be re-ranged by user. |
| Power:
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Add suffix A (Model FT/FDT5040A) for AC power, D for DC
power. Specify 115Vac, 230Vac, 12Vdc or 24Vdc.
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Reverse-Acting
Transmitter
(decreasing output with increasing input): |
Change last digit of the model number to 1 (for example,
JH5041A).
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| Loop-Powered
Output: |
4/20mA "current sink" output stage for connection
to devices whose inputs provide 24Vdc loop excitation. Change
the last digit of the model number to 2 (for example,
JH5042A).
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| Conduit
Connections:
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Standard: A single 1/2 inch NPT conduit fitting
(glass-fiber reinforced nylon) is provided at the bottom of
the housing. Other options are possible, including no fitting
at all. Contact Us
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INSTALLATION AND CONNECTIONS
Connections are made to 8 terminals within the
enclosure:
1: Input plus.
2: Input minus.
3: No connection.
4: No connection.
5: Output plus.
6: Output minus.
7: Power (AC or, if DC power option, DC
plus).
8: Power (AC or, if DC power option, DC
minus).
DETAILED SPECIFICATIONS
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Voltage Input
Capabilities:
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50mV minimum span, +/-20V maximum
input. Offset ranges are allowed. (Input Impedance:
200kohms or greater.))
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| Current
Input Capabilities: |
1mA minimum span, 0/25mA
maximum input. Specify 4/20mA when used with a 2-wire
transmitter. Offset ranges are allowed. (Input resistance
varies with input range. Contact factory for details. 62
ohms for 4/20mA input.) |
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Loop
Excitation
Supply:
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24Vdc regulated. 25mA max. current
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Voltage
Output Capabilities:
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1 volt minimum output span, -10 to
+15V absolute limit. Offset ranges are allowed. Maximum
output load, 10mA (1Kohm at 10V output).
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Current
Output Capabilities:
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1mA minimum output span, 0 to +25mA
absolute limit. Positive offsets are allowed, negative
outputs are not. Output drive capability, 24V (1,200 ohms
max. at 20mA output).
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Display
Capabilities:
(optional) |
Low end and full scale
readings may be anywhere between -1999 and +1999 counts. A
fixed decimal point may be added in any position. Minimum
span (full scale minus low end) is 10 counts.
Reverse-acting display is possible (full scale reading
downscale from low end). Display may be re-ranged by user. |
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Accuracy
(factory calibration):
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+/-0.1% of span
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Adjustability:
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Zero and span each are adjustable
approx. +/-15% of span.
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Linearity:
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+/-0.05% of span or better.
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Response
Time:
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Under 100 milliseconds.
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Isolation:
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3-way (Power/Input/Output) 1,500Vac
rms (2,100V peak).
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Guaranteed
Operating Temperature:
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-10 to +60 deg. C (14 to 140 deg. F).
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Temperature
Stability:
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+/-(0.02% of span) per deg. C, or
better.
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Power
Requirements:
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AC, 115 or 230Vrms, 50/60Hz, 2.5V-A.
DC, 12 or 24V, 2.5W.
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