FDT5100 SERIES FIELD MOUNT TRANSMITTERS MULTIPLY/DIVIDE, DC INPUTS

FDT5140: A x B 
FDT5150: A/B

  • NEMA 4X Splashproof Enclosure 
  • 3-1/2 Digit Display 
  • Multiply or Divide Two DC Inputs 
  • Input and Output Ranges Need Not be the Same 
  • Input/Output Isolation Standard 
  • Urethane-Coated Circuit Boards 
  • AC or DC Power Options

FDT5140/FDT5150
PDF
DATA SHEET

Also see: 
FDT5110/FDT5120/FDT5130 for Add/Subtract functions 
FDT5160/FDT5170 for Square/Square Root functions 

FDT5140/FDT5150 Multiply/Divide Transmitters respond to the product or ratio of two DC inputs and provide a proportional, isolated DC output. 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. FDT5000 Series transmitters include a 3-1/2 digit user-rangeable display to provide local process indication in engineering units.

Standard calibration calculates the inputs and outputs on a percent-of-span basis. For example, in an FDT5140 multiplying transmitter with 4/20mA inputs and a 0/10V output, when both inputs are at 12mA (50%) the output will be 2.5V (25%). The equation is: 0.5 x 0.5 = 0.25. Nonstandard calibrations are available, including dissimilar input ranges and input-to-output offsets. We also can, as a special, create the function, Output = (A x B)/C. Contact us with your requirements.

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, FDT5140A) 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, FDT5141A).

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, FDT5142A).

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: No connection. 
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).

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)

+/-0.2% of span. (For divider, input B must be greater than 20% of span to achieve rated accuracy.)

Adjustability: 

Zero and span each are adjustable approx. +/-15% of span.

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.