832A Dual RTD Input Intelligent Alarm

832A Dual Intelligent Alarm with RTD Input Description

IntelliPack alarms compare inputs against user-defined limit set-points to control built-in relays.

Each unit offers a selection of input ranges and alarm functions to handle a broad range of applications. As your needs change, you can easily reconfigure the unit for different ranges or functions. Alarm functions available on all models include on/off controller, limit alarm, window alarm, deviation alarm, rate-of-change alarm, and peak/valley detection.

Setup is very easy. IntelliPack alarms are configured through a user-friendly Windows 7 or newer program. Field adjustments and re-calibration are quickly performed with front-panel push-buttons and status LEDs. Once configured, IntelliPacks operate independent of any host computer.

Performance

General Input

Analog to Digital (A/D) Converter: 16-bit Σ-Δ A/D converter
Resolution: ±0.005% of span or 0.1°C/ LSB. ADC typically yields resolutions finer than 0.1°C/LSB
Ambient Temperature Effect: Better than ±0.005% of input span per °C or ±1μV, whichever is greater.
Noise Rejection:
Normal Mode: Better than 40dB @ 60Hz
Common Mode: Better than 130dB @ 60Hz
Input Filter: Normal mode filtering, plus digital filtering optimized and fixed per input range within Σ-Δ ADC
Input Response Time: Less than 300mS to 98% of final value for a step change in the input. A software programmable delay can be implemented for filtering transients.
Relay Time Delay: Adjustable alarm delay of up to 25 seconds
Input Over-voltage Protection: Bipolar Transient Voltage Suppressors (TVS)

Resistance Input

Resistance Input Range: 0 to 500 ohms
Resistance Accuracy: ±0.05 ohms

RTD Input

RTD Input Ranges:100 ohm Platinum, 120 ohm Nickel, or 10 ohm Copper; user-configured

RTD                °C Range (°F Range)                       Accuracy
Pt1            -200 to 850°C (-328 to 1562°F)              ±0.25°C
Pt2            -200 to 850°C (-328 to 1562°F)              ±0.25°C
Ni                 -80 to 320°C (-112 to 608°F)                 ±0.25°C
Cu             -200 to 260°C (-328 to 500°F)                 ±1.00°C
Alpha: Pt1 (a = 1.3850), Pt2 (a = 1.3911), Ni (a = 1.6720), Cu (a = 1.4272)
2, 3, or 4-wire configurations supported. Module provides sensor excitation, linearization, lead-wire compensation, and sensor break detection.

RTD Excitation Current: 1mA DC typical, all types
RTD Lead-Wire Compensation: 25 ohms per lead
RTD Break Detection: RTD sensor failure can be configured for either upscale or downscale.

Output

Relays: 
Two independent SPDT electro-mechanical relays
Contact material Silver-Cadmium Oxide (AgCdO)
Relay Ratings (CSA ratings):
25V DC @ 5A
120/240V AC @ 5A
Expected Mechanical Life: 20 million operations

Environmental

Ambient Temperature:
Operating: -25 to 70°C (-13 to 158°F)
Storage: -40 to 85°C (-40 to 185°F)
Relative Humidity: 5 to 95%
Power Requirements: 10 to 36V DC. 55mA @ 24V. 80mA @ 15V.
Isolation:
3-way (input/output/power)
1500V AC for 60 seconds or 250V AC continuous
Inputs share a common
Radiated Field Immunity (RFI): EN61000-4-3, EN50082-1
Electromagnetic Field Immunity (EMI):
No relay trips will occur beyond ±0.25% of input span from set-point under the influence of electromagnetic fields from switching solenoids, commutator motors, and drill motors.
Electrical Fast Transient (EFT): EN61000-4-4, EN50082-1
Surge Withstanding Capability (SWC): EN61000-4-5, EN50082-1
Electrostatic Discharge (ESD): EN61000-4-2, EN50082-1
Radiated Emissions: EN50081-1 for Class B equipment
Approvals:
UL, cUL listed (USA, Canada)
UL3121 – general product safety

Configuration

Software Configuration: Units are fully programmable via the Windows 7 or newer IntelliPack Configuration Program. Configuration downloads from PC through EIA232 serial port using Acromag 800C-SIP kit.
Field Configuration: Setpoint and deadband are configurable via push-buttons and a standard calibrator.
LED Indicators: LEDs indicate power, status, and alarm.

Physical

Enclosure: Case: Self-extinguishing NYLON type 6.6 polyamide thermoplastic UL94 V-2, color beige; general purpose NEMA Type 1 enclosure.
Connectors (Removable terminal blocks): Wire Range: AWG #14-22 (AWG #12 stranded only)
Printed Circuit Boards: Military grade FR-4 epoxy glass circuit board
Dimensions
1.05W x 4.68H x 4.35D inches
26.7W x 118.9H x 110.5D millimeters
Shipping Weight: 1 pound (0.45 Kg) packed

Additional information