FDT5100 SERIES FIELD MOUNT TRANSMITTERS ADD-SUBTRACT DC INPUTS

FDT5110: (A+B)/2 
FDT5120: (A+B+C)/3 
FDT5130: (A-B)

  • NEMA 4X Splashproof Enclosure 
  • 3-1/2 Digit Display 
  • Voltage or Current Inputs and Outputs 
  • Nonstandard Ranges Available 
  • Input/Output Isolation Standard 
  • Urethane-Coated Circuit Boards 
  • AC or DC Power Options

FDT5110/FDT5120/FDT5130
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DATA SHEET

Also see: 
FDT5140/FDT5150 for Multiply/Divide functions 
FDT5160/FDT5170 for Square/Square Root functions 

FDT5100 Series Add/Subtract Transmitters respond to the sum or difference of 2 or 3 DC inputs and provide a proportional, isolated DC output.

Standard calibration provides low-end output (0%) when all inputs are at 0%. On Models FDT5110 and FDT5120 full-scale output (100%) occurs when all inputs are at 100%. On Model FDT5130, full-scale output occurs when input A is at 100% and input B at 0%. Voltage or current inputs and outputs may be chosen: the input and output ranges need not be the same. Nonstandard calibrations are available, including unequal weighting, dissimilar input ranges and input-to-output offsets. Contact us with your requirements.

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. FDT5100 Series transmitters include a 3-1/2 digit user-rangeable display to provide local process indication in engineering units.

Available options include AC and DC power choices and reverse-acting transmitter (decreasing output with increasing input).

For field mount transmitters without a display, select any plug-in transmitter module plus our ENCL-1 NEMA-4X enclosure. (see Accessories page)

ORDERING INFORMATION

Model Number: 

Select from the list above according to your input function.

Display: 

Specify display reading at low end and at full scale output, 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: 

Add suffix A (for example, FDT5110A) for AC power, D for DC power. Specify 115Vac, 230Vac, 12Vdc or 24Vdc.

Input Range: 

Specify any DC voltage or current range allowed by the "Input Capabilities" spec, below.

Output Range: 

Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below.

Reverse-Acting Transmitter (decreasing output with increasing input)

Change the last digit of the model number to 1 (for example, FDT5111A).

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, FDT5112A).

Urethane Coating: 

Specify Option U.

Conduit Opening: 

Standard: None. The enclosure has knockouts. Option NPT: Single 1/2 inch NPT fitting (glass-fiber reinforced nylon) at the bottom of the housing.

ELECTRICAL CONNECTIONS

Connections are made to 8 terminals within the enclosure:

1: Input A (positive). 
2: Input common (negative). 
3: Input B (positive). 
4: Input C (positive - Model FDT5120 only). 
5: Output positive. 
6: Output negative. 
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: 

100mV minimum span, +/-20V maximum input. Offset ranges are allowed. (Input Impedance: 200kohms or greater.)

Current Input Capabilities: 

1mA minimum span, +/-100mA maximum input. Offset ranges are allowed. (Input Resistance: Varies with input range. Contact factory for details. 62 ohms for 4/20mA input.)

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).

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). (The inputs are not isolated from each other.)

Guaranteed Operating Temperature: 

-10 to +60˚C (14 to 140˚F).

Temperature Stability: 

+/-0.02% of span per ˚C, or better.

Power Requirements: 

AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W.