Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument

Thermocouple Input Isolated Field Rangeable Two Wire Transmitter Model SR2401


Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument
Potentiometer,Position,Input,Two,Wire,Transmitter,Model SR2800,Wilkerson Instrument Catalogue
Potentiometer,Position,Input,Two,Wire,Transmitter,Model SR2800,Wilkerson Instrument Manual
ORDERING INFORMATION
SR2401, (   ) , (   ) , (   )  
    |       |       |   Burnout
    |       |             US - Upscale on Open Sensor
    |       |             DS = Downscale on Open Sensor
    |       |            
    |       |   Temperature Range
    |             (Specify F or C)
    |                    
    |   Sensor Type
  J, K, R, S, T, E, N, etc.

Example: SR2401,J,0/500F,US


Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument

Features

Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Provides DC Output Proportional to any Thermocouple Input*
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Fully Isolated Input/Output
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Unlimited** Choice of Input Ranges via Interchangeable Range Cards
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Reverse Polarity-Protected
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Upscale or Downscale Burnout Protection
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Test Points for Loop Current Monitoring Without Breaking Loop Circuit
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument 50 mm Diameter Case - 33 mm Mounting Hole Spacing
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument NEMA-4 and Explosion-Proof Connection Heads Available
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Intrinsically Safe Design with FM & CSA Approvals Pending
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument Low Cost
Thermocouple,Input,Isolated,Field,Rangeable,Two,Wire,Transmitter,Model SR2401,Wilkerson Instrument 5 + 5 Year Warranty


Description

The SR2401 is a low-cost, reliable, thermocouple input two-wire transmitter for field or panel mounting in various industrial housings and enclosures.  It provides a DC output current (4/20 mA) proportional to a thermocouple input.

The SR2401 includes filtering and conditioning to reduce susceptibility to transients and noisy operations.  The SR2401 provides isolation by using a feedback VCO to develop a pulse train with a duty cycle proportional to the input signal amplitude.  This pulse train is coupled through a pulse transformer to the output circuitry, where the duty cycle data is converted to a 4/20 mADC output level proportional to the millivolt signal from the thermocouple.

Ranging is accomplished via a plug-in range card which characterizes the input to the desired thermocouple type and sets the temperature range and burnout protection (upscale or downscale).  Cold junction compensation is provided by a solid state temperature sensor embedded in the thermocouple input terminal strip.  The output ZERO and SPAN controls are accessible through the top of the case.  Zero is adjustable ± 20% and span ± 15%.  Terminations are made to screw terminal connectors on the top of the case.

Test points located on the transmitter's front panel allow verification of loop current value, using a milliammeter, without breaking the loop current.

Typical Application

Remote temperature data acquisition.  Elimination of ground loops and common mode signals.

Mounting

The SR2401 can be mounted in a thermocouple connection head (TSH-A6L), explosion-proof housing (XJAY), or on a flat surface using the two 4.5 mm diameter mounting holes provided. Standard 33 mm hole center spacing allows for mounting in most connection heads. The 5.08 mm center hole allows clearance for input wiring or for a 3/16 inch diameter temperature probe. An optional DIN-Rail mounting kit is available (DMP2000).

Specifications

INPUT RANGE
Select any type thermocouple
  (minimum span 4 mV)

TEMPERATURE STABILITY
± 0.01% of span per°C

POWER
10-36 VDC, polarity protected

OUTPUT RANGE
4/20 mA
Current limited = 35 mA

SUPPLY VOLTAGE EFFECT
0.02% of span max 10-36 VDC

ISOLATION
Output to Input
  1000 Volts RMS sine wave

OPERATING TEMPERATURE
-13°F to 176°F
-25°C to  80°C

ACCURACY
 ± 0.1% of span

INPUT IMPEDANCE
 10 megohms

LINEARITY
 Better than ± 0.05% of span (mV)
  (input to output)

COMMON MODE REJECTION
 120 dB, DC to 60 Hz

MAX LOAD RESISTANCE
 = [(V supply - 10)/20 mA] kilohms

RESPONSE TIME
 - Step Change
250 ms for 99% of final value

*  For linearized output see SC5000 series

** Within Specified Range Limits




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