Mighty Modules Model SR2300
RTD Input Field Rangeable Two Wire Transmitter

ORDERING INFORMATION SR2300, ( ) , ( ) | | | | Temperature Range |   (specify°F or°C) | | Sensor Type: 4270 - 10 Ohm Copper .00427 3850 - 100 Ohm Platinum .00385 3920 - 100 Ohm Platinum .00392 xxxx -  Other RTD (specify) Example: SR2300,3850,0/250F	Catalogue Manual

Features

Description

The SR2300 is a low-cost, reliable, RTD 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 an RTD input.

Filtering and conditioning to reduce susceptibility to transients and noisy operations provide accurate, trouble-free operation.  Ranging is accomplished via a plug-in card which characterizes the input for the desired RTD type and sets the temperature range.  Linearization is provided for platinum RTDs.

The SR2300 utilizes a single constant current source to excite the RTD.  An accurate and stable leadwire compensation circuit uses the third lead of a 3-wire RTD to compensate for the RTD lead resistance.  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 SR2300 front panel allow monitoring of loop current value, using a milliammeter, without breaking the loop current.

Typical Application

Remote temperature data acquisition.

Mounting

The SR2300 can be mounted in a 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 diameter temperature probe. An optional DIN-Rail mounting kit is available (DMP2000).

Specifications

RTD INPUT 3-Wire or 2-Wire, 10 ohms to 1000 ohms Pt, Ni, Cu INPUT RANGE select any range from -100°C to 850°C   (min span 20°F/10°C) EXCITATION CURRENT 2.4 mA (10 ohms to 500 ohms) 0.24 mA (>500 ohms) OPERATING TEMPERATURE -13°F to 176°F -25°C to  80°C LINEARITY (Pt RTD, output vs. temp)   ± 0.03% of span (fullscale temp < or = 400°C)   ± 0.075% of span (fullscale temp > 400°C) (others, output vs. resistance)   ± 0.01% of span POWER 10-36 VDC, polarity protected SUPPLY VOLTAGE EFFECT 0.02% of span max, 10 to 36 V

COMMON MODE REJECTION 120 dB, DC to 60 Hz MAX LOAD RESISTANCE =[(V supply - 10)/20 mA] kilohms RESPONSE TIME - Step Change 150 ms for 99% of final value ACCURACY ± 0.1% of span or 0.02 ohms, whichever is greater OUTPUT RANGE 4/20 mA Current limited = 35 mA TEMPERATURE STABILITY ± 0.02% of span per°C     * Within specified range limits