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MEDACS2200 Signal Conditioner

Brand: Status Instruments

The MEDACS (2200) intelligent signal conditioner consists of a family of DIN rail modules, each one having a high degree of functionality and configurability via a RS485 MODBUS serial communications interface or through push buttons on the single channel version. 

They are suitable for RTD, Thermocouple, Voltage, Current and Frequency signals and provide an isolated (4 to 20) mA re-transmission signal, 2 changeover trip relays or 4 normally open relays or various combinations. 

For high density systems, dual channel versions are available or for systems that require more local input, single channel versions with an in-built keypad and digital display are available where functions can be accessed via the front panel keys.

Each unit comes complete with a RS485 serial communications port which enables the devices to be integrated into a complete process control system. 

Unit wiring is simplified and speeded up by using the integral 'bus jumper' system provided with each unit which removes the need for complicated and expensive back plane wiring.

Specifications

Accuracy

  • Cold Junction Error: ± 0.5° C
  • Cold Junction Tracking: 0.05° C/°C
  • Current Input - Base Accuracy: 0.05 % of Full Scale ± 0.05 % of Reading
  • Current Re-Transmission Outputs: 0.07 % or 5 µA, whichever is greater
  • Frequency Inputs: 0.003 % of Full Scale
  • RTD - Basic Accuracy: 0.1° C (0.18° F) ± 0.05 % of Reading
  • Thermocouple - ± 0.04 % of Full Scale ± 0.04 % of Reading or ± 0.5° C (0.9° F) whichever is greater
  • Voltage Input - Range: 0.04 % of Full Scale ± 0.04 % of Reading

Alarm

  • Deviation
  • High
  • Low
  • Off: Alarm Function Inactive
  • Test

Approvals & Certifications

  • EMC Emissions: BS EN 61326, Immunity: BS EN 61326

Communication

  • Baud Rate: 19.2, 9.6, 1.2 Kbps
  • Modbus
  • RS-485

Current

  • Excitation Current: 1 mA

Delay Time

  • Programmable (Alarm Must be Continuously Present for This Period in Order to be Recognised)

Display

  • -1999 to 9999

Electrical Contacts

  • Contacts are normally closed i.e. the contact is closed at power off & when operating in an alarm condition. The contact opens in the absence of an alarm condition. The active function can be reversed in software.

Filter

  • Adaptive
  • Programmable

Frequency

  • 0.1 Hz to 20 kHz

Humidity

  • 10 to 90 % Relative Humidity

Hysteresis

  • 0 to 100 % (Programmable)

Input

  • ± 0.1 V
  • ± 1 V
  • ± 10 mA
  • ± 10 V
  • ± 100 mV
  • ± 20 mA
  • ± 5 V
  • 1-5 V
  • 4-20 mA

Input Impedance

  • Current Input: 20 ohms
  • Voltage Input: 1 Megaohm

Isolation

  • Breakdown: 1 kV I/P~O / P~PSU

Load

  • Maximum

Mounting

  • DIN Rail

Operating Temperature

  • -30° to 60° C (-22° to 140° F)

Operating Temperature - Sensor

  • -200° to 850° C (-328° to 1,562° F)

Operating Time

  • < 5 milliseconds

Output

  • 4-20 mA
  • Maximum

Power

  • 19 V

Power Requirement

  • 24 Vdc ± 10 % at 200 mA

Power Supply

  • Maximum

Relay Output

  • AC - Max.
  • DC - Max.

Resistance

  • Lead Resistance Effect: 0.002° C/ohms
  • Maximum
  • Relay Outputs - Contact Resistance: < 100 milliohms

Response Time

  • 300 milliseconds
  • Start-Up Delay: Programmable

RTD Type

  • Ni120
  • Pt100

Sensor, Probe Connection

  • 2-Wire
  • 4-Wire

Sensor, Probe Type

  • B Thermocouple
  • E Thermocouple
  • J Thermocouple
  • K Thermocouple
  • L Thermocouple
  • N Thermocouple
  • R Thermocouple
  • S Thermocouple
  • T Thermocouple

Stability

  • Temperature Stability: 5 µA/°C

Storage Temperature

  • -50° to 85° C (-58° to 185° F)

Temperature Range

  • -1,999° to 9,999° C (-3,566.2° to 5,537.2° F)
  • Cold Junction Range: -20° to 60° C (-4° to 140° F)

Thermal Drift

  • RTD - Span: 0.01 %/°C
  • RTD - Zero: ± 0.004 ohms/°C
  • Thermocouple - Span/Voltage Input - Thermal Drift/Current Input: 0.02 %/°C
  • Thermocouple - Zero: 4 µV/°C

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