Transmitters Field Mount Transmitters Potentiometer FDT5800
Friday, 10 June 2011 18:27 Last Updated on Friday, 26 August 2011 03:03 Written by Administrator

FDT5800 FIELD MOUNT TRANSMITTER POTENTIOMETER INPUT

 

  • NEMA 4X Splashproof Enclosure 
  • 3-1/2 Digit Display 
  • Potentiometers from 100 ohms to 100Kohms 
  • Offset and Expanded Ranges Available 
  • Input/Output Isolation Standard 
  • Urethane-Coated Circuit Boards 
  • AC or DC Power Options

 

FDT5800
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DATA SHEET

FDT5800
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MANUAL

The Model FDT5800 Potentiometer Input Transmitter provides an isolated DC output proportional to the position of a potentiometer or slidewire wiper. The input range may be 0-100% or any 10% or wider portion of the wiper's travel. Calibration is unaffected by the potentiometer's end-to-end resistance.

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 FDT5800 includes 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: 

FDT5800.

Power: 

Add suffix A (FDT5800A) for AC power, D for DC power. Specify 115Vac, 230Vac, 12Vdc or 24Vdc.

Input Potentiometer: 

It is not necessary to specify the potentiometer's resistance. Just make sure it is not less than 100 ohms nor more than 100Kohms.

Input Range: 

Specify 0/100%, or any 10% or wider portion of the travel (for example, 60/70%).

Output Range: 

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

Display Range: 

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 last digit of the model number to 1 (for example, FDT5801A).

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, FDT5802A).

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: Counterclockwise (0% travel). 
2: Wiper. 
3: Clockwise (100% travel). 
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

Input Potentiometer: 

May be any resistance between 100 ohms and 100Kohms. Calibration is not affected by the potentiometer's resistance.

Input Capabilities: 

0 to 100% travel, or any 10% or wider portion of the travel (for example, 45 to 55% travel).

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. When ordered for 0-100% travel, the adjustments are set up so as to allow calibration to any 75% or wider portion of the travel (for example, 0-75% or 25-100%).

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 +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.