3595-1C1 - 20 Channel Analogue Reed Relay IMP Replacement of 3595-1C IMP

The 3595-1C1 is a replacement for the original 3595-1C unit, which is proving compatible with the original for applications encountered so far. It has similar measurement ranges and accuracies to the original product and offers enhanced measurement resolutions and additional integration times on a per channel basis.

The 3595-1C1 also supports improved drift correct measurement options, without compromising compatibility.

It is compatible with the SNET communications and power supply features of the original product and operates on a network driven from a 3595-4C for example.

It is the same size, has identical fixing positions, and it has interchangeable connector blocks with the original product.

Features

  • Compatible Communications with 3595 series.
  • Compatible enclosure and connector blocks.
  • Thermocouple, resistance, RTD, voltage and current measurements in rugged enclosure.
  • 20 Channels per Module – precision reed relay isolation. Individually programmable.
  • Precision 3 and 4 wire resistance and RTD measurements. (3595-1Q1)
  • Enhanced 14 to 19/20 bit resolution. 100 to 10 measurements per second.
  • Enclosed connector blocks. Dual sensor accurate Cold Junction Compensation.
  • Thermocouple health monitoring Temperatures in °C or °F unit.

Specifications

Current Measurement

Number of channels / module: 20/10

Number of poles / channel: 3/6

Connector type input channels: Standard 3595 series isothermal Enclosure Screw Terminals.

Measurement modes: V DC (mV, DC, uVDC) Thermocouple CJC temperature.

Sensor health: Thermocouple types K,J,T,R,S,E,B,N

Thermocouple compensation: Dual sensors

Sensitivity ( 100R shunt fitted): <10nA

Accuracy as for voltage ranges + shunt accuracy.

A-D Converter

Interference Rejection

Measurement resolutions supported:

  • 19/20 bits at 9 measurements/s
  • 18/19 bits at 20 measurements/s
  • 17 bits at 30 measurements/s
  • 15 bits at 80 measurements/s
  • 14 bits at 100 measurements/s
  • Number of bits includes sign counted as 1 bit.

50 Hz Mains frequency interference rejection is provided by 17 and 20 bit modes 60 Hz mains interference rejection is provided by 17,19 and 20 bit modes.

Higher Measurement rates  possible by disabling drift correct measurements.

AC 50/60Hz

Common mode rejection ratio channel group: <0.1uV/V

Single channel common mode rejection ratio: <1uV/V

Series mode rejection ratio 50 or 60 Hz +/- 0.05%: <1uv/V

Note: reed scanners are not suitable for direct connection to power circuits.

Voltage measuring mode

Overload Protection

Input voltage ranges:            

+12V>-12V

+2,0V >-2.0V

+200mV >-200mV

+30mV >-30mV

Automatic range selection is supported.

Temperature coefficients DC voltage: 25ppm rdg + 0.1uV/o C

Measurement sensitivity 30mV range 18 bits: <0.25uV

Additional error at 80 & 100/sec mode 0.03% of range.

Channel overload protection: Passive 50V Continuous

Isolation

Power Requirement

For protection against transients and ground loops.

Isolation test voltage IMP to IMP or to SNET: Tested at 500V

Connector: Via SNET cable

Voltage: 11 to 48V

Current: <100mA at 12V, <50mA at 24V

Thermocouple Measurement Accuracy

Internal Cold junciton compensation errors included: (External compensation is also available)

General

Type Range Accuracy
K -100 to 500 0.05°C
  500 to 1200 0.7
J 1200 to 1600 3.0
  360 to 800 0.5
T -150 to 400 0.7
R 0 to 1600 0.5
S 0 to 1700 2.0
E -50 to 290 2.2
  290 to 1000 0.7
B 200 to 1600 1.0
N -200 to 1600 4.5
  -100 to 580 1.1.5
  80 to 1300 1.3

SNET Interface: SNET standard compatible

Status LED’s: 4

Function: Power, Communication, ADC fault, Calibration error

Safety: EN61010-1:2010, EN61010-2-30:2010

EMC: EN55011:2009, EN 61326-2-1:2006

Case size: 435*215*34.5mm

Protrusion of cable boots: 45mm

Weight: 3.23kg

Operating Temperature Range: -20 to 70 °C

Relative Humidity(non condensing): 85% at 40°C

Vibration: 1g 10hz to 400Hz in 3 planes.

Programming storage: Secure flash memory

Calibration temperature is 21°C

Displayed sensitivity: <0.1oC

Thermocouple Health Monitoring automatic by resistance measurement sequence.