FT5400 FIELD MOUNT TRANSMITTER RTD INPUT
FT5400: 100 ohm Platinum RTD, Linearized
FDT5400: 100 ohm Platinum RTD, Linearized, with optional display Model numbers
FT/FDT54x0: reserved for other RTD styles. Contact factory with your requirements.
- NEMA 4X Splashproof Enclosure
- Optional 3-1/2 Digit Display
- Available for all RTD Types
- Linearizes Platinum RTDs
- 3-Wire Lead Compensation Standard
- Urethane-Coated Circuit Boards
- AC or DC Power Options
FT5400 Series RTD Input Transmitters provide an isolated DC output proportional to temperature as measured by a resistance thermometer (RTD). Model FT5400 specifically designates 100 ohm platinum RTD input: additional model numbers are reserved for other RTD types.
Standard three-wire input circuitry compensates for lead wire resistance: a 4-wire input option is available. Platinum RTDs are linearized to provide true temperature indication. (Other types may or may not be: contact us to discuss your specific requirements.) A low-drift input amplifier helps assure accurate readings under varying ambient conditions.
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. FDT5400 Series transmitters include a 3-1/2 digit user-rangeable display to provide local process indication in degrees or other engineering units.
Available options include AC and DC power choices and reverse-acting transmitter (decreasing output with increasing input).
ORDERING INFORMATION
Model Number:
Specify Model FT5400 for use with 100 ohm platinum RTDs. Other model numbers will be assigned upon request for other RTD types. Contact factory for non-RTD resistance inputs.
Optional Display:
Change FT to FDT (FDT5400). If not otherwise specified, the display will be calibrated in degrees per your input range. Other calibrations are possible: see "Display Capabilities" specification, below.
Power:
Add suffix A (for example, FT5400A) for AC power, D for DC power. Specify 115Vac, 230Vac, 12Vdc or 24Vdc.
RTD Type:
Model FT/FDT5400: 100 ohm platinum. Others as determined by assigned model number.
Input Range:
Specify any input range allowed by the "Input Capabilities" spec, below.
Output Range:
Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below.
4-Wire RTD:
Specify Option 4W.
Reverse-Acting Transmitter (decreasing output with increasing input):
Change last digit of the model number to 1 (for example, FT5401A).
Loop-Powered Output:
4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Change last digit of the model number to 2 (for example, FDT5402A). Urethane Coating:
Specify Option U.
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: RTD.
2: RTD (same end of RTD as terminal 1). When connecting to 2-wire RTD, jumper terminals 1 and 2. 3: RTD (opposite end)
4: Standard - no connection. Option 4W - 4th wire of RTD (same end as terminal 3).
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
RTD Type:
Any RTD from 10 to 2,000 ohms. (Model FT/FDT5400 for 100 ohm platinum, other models FT/FDT54x0 for other types. Contact factory. Specify RTD type, resistance & slope.)
Input Connection:
3-wire connection is standard. Specify Option 4W for 4-wire RTD.
Input Capabilities:
Minimum span 10 deg. C (18 deg. F) or 1 ohm, whichever is greater. Any range up to maximum covered by RTD. Offset ranges are allowed.
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. (Display is normally calibrated in degrees per the input range. If other settings are desired, please specify on your order.)
Endpoint Accuracy (factory calibration):
+/-0.1% of span or 0.02 ohms, whichever is greater.
Adjustability:
Zero and span each are adjustable approx. +/-15% of span.
Linearity:
Platinum RTDs are linearized. Copper is inherently linear. Contact factory for information on others.
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 plus 0.002OC) per OC, or better.
Power Requirements:
AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W.
