FT5040 FIELD MOUNT TRANSMITTER 4/20mA INPUT W/LOOP EXCITATION SUPPLY
- NEMA 4X Splashproof Enclosure
- Optional 3-1/2 Digit Display
- Provides 24Vdc Power to Input Loop
- 4/20mA Input Standard, Others Available
- Input/Output Isolated
- Urethane-Coated Circuit Boards
- AC or DC Power Options
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 splashproof, 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 nonisolated 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.
Power: Add suffix A (Model FT/FDT5040A) for AC power, D for DC power. Specify 115Vac, 230Vac, 12Vdc or 24Vdc.
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.
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.
Reverse-Acting Transmitter (decreasing output with increasing input): Change model number to FT/FDT5041(A or D).
Loop-Powered Output: 4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Change model number to FT/FDT5042(A or D).
Conduit Connection: 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 factory
ELECTRICAL CONNECTIONS
Connections are made to 8 terminals within the enclosure:
1: Input plus.
2: Input minus.
3: +24Vdc loop excitation.
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
Voltage Input Capabilities: 50mV minimum span, +/-20V maximum input. Offset ranges are allowed. (Input Impedance: 200kohms or greater.)
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.)
Input Excitation: 24Vdc regulated. 25mA max. current.
Voltage Output Capabilities: 1 volt minimum output span, -10 to +15V absolute limit. Offset ranges are allowed. Maximum output load, 10mA (1Kohm at 10V output).
Current Output Capabilities: 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).
Display Capabilities: 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.
Accuracy (factory calibration): +/-0.1% of span.
Adjustability: Zero and span each are adjustable approx. +/-15% of span.
Linearity: +/-0.05% of span or better.
Response Time: Under 100 milliseconds.
Isolation: 3-way (Power/Input/Output) 1,500Vac rms (2,100V peak).
Guaranteed Operating Temperature: -10 to +60oC (14 to 140oF).
Temperature Stability: +/-0.02% of span per oC, or better.
Power Requirements: AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W.
