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Input specifications – Spectrum Controls 1734sc-IF4U User Manual

Page 42

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A-2

Point IO™ 4 Channel Universal Analog Input Module

User’s Manual Pub. 0300266-01 Rev. A

Input Specifications

Input Specification

Inputs per module

System Configuration 1: 2 each 4/3/2 wire RTDs/Resistors
System Configuration 2: 2 each V/I, 1 each 4/3/2 wire RTD/Resistor
System Configuration 3: 1 each TC, 1 each 4/3/2 wire RTD/Resistor,
1 each CJC
System Configuration 4: 2 each V/I, 1 each TC, 1 each CJC
System Configuration 5: 1 each V/I, 2 each TC, 1 each CJC
System Configuration 6: 3 each TC, 1 each CJC
System Configuration 7: 4 each V/I

Resolution 16

Bit

Input Update Rate

See Table 3-2 (Channel Conversion Time)

ADC Type

Sigma Delta

CMRR

>96dB Typical with 4Hz and 17Hz filters

NMRR

4 Hz Filter

74dB minimum at 50 and 60 Hz

17 Hz Filter

65dB minimum at 50 and 60 Hz

62 Hz Filter

First notch at 31Hz, typically 30dB

470 Hz Filter

First notch at 237 Hz, typically 35dB

Input ranges

0-20mA, 4-20mA, ±50mV, ±100mV, 0-5V, 1-5V, 0-10V, ±10V,
types J, K, T, E thermocouple, 100Ω and 1000Ω PT385 and Pt3916,
3000Ω resistance.
pH sensor ±1V

Input Impedance
Tolerances

Current Impedance: 253.0 +/-0.5% ohms
Voltage Impedance: 10.425 +/-0.7% Mohm

Data Format

Signed integer

Maximum overload

Fault protected to 24V DC

Calibration

Factory calibrated, user calibration not supported

Indicators

1 green/red module status LED
1 green/red network status LED
4 green/red input status LEDs

1 green/red module status LED
1 green/red network status LED
2 green/red input status LEDs

Thermocouple
Inputs

Linearization per ITS-90
System accuracy at 25°C (Using 4Hz and 17Hz filters)
Type J (°C to +55°C): ± 0.6°C maximum
Type T (0°C to +55°C): ± 1°C maximum
Type K (0°C to +55°C): ± 1°C maximum
Type E (0°C to +55°C): ± 0.6°C maximum

System accuracy at 25°C (Using 4Hz and 17Hz filters)
Type J: ± 0.6°C maximum

Type T (-230°C to 400°C): ± 1°C maximum
Type T (-270°C to -230°C): ± 5.4°C maximum
Type K (-225°C to 1370°C): ± 1°C maximum
Type K (-270°C to -225°C): ± 7.5°C maximum
Type E (-210°C to 1000°C): ± 0.5°C maximum
Type E (-270°C to -210°C): ± 4.2°C maximum

System accuracy at 0°C to +55°C (Using 4Hz and 17Hz filters)
Type J (0°C to +55°C): ± 1.2°C maximum
Type T (0°C to +55°C): ± 2°C maximum
Type K (0°C to +55°C): ± 2°C maximum
Type E (0°C to +55°C): ± 1.2°C maximum

System accuracy at 0-60°C (Using 4Hz and 17Hz filters)