811T: DC Voltage/Current Input Intelligent Transmitter

These transmitters isolate and convert sensor inputs to noise-free, proportional DC current or voltage output signals. An optional relay output adds a local limit alarm function.

Each unit offers a selection of input and output ranges, as well as several signal conditioning options. This flexibility enables a single IntelliPack to handle a broad range of applications. As your needs change, you can easily reconfigure the unit for different ranges or functions.

Setup is very easy. IntelliPack modules are quickly configured with the user-friendly Windows software program. Field adjustments are simple with the module’s front-panel push-buttons and status LEDs. Once configured, IntelliPacks operate independent of any host computer.

Performance

General Input

Analog to Digital Converter (ADC): 16-bit Σ-Δ A/D converter
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 100dB @ 60Hz
Input Response Time (for input step change): Less than 100mS typical to 98% of final output value
Input Over-voltage Protection: Bipolar Transient Voltage Suppressors (TVS)

DC Current Input

DC Current Input Ranges (100% rangeable):
Input Ranges          Resolution
0 to 22mA DC                  757nA
0 to 5mA DC                    189nA

DC Current Input Impedance: 24.9 ohms
Excitation Supply (for 2-wire instruments): +15V DC, 24mA maximum
DC Current Input Accuracy: better than ±0.05% of input span

DC Voltage Input

DC Voltage Input Ranges (100% rangeable):
Input Ranges          Resolution
±100V DC                       3.77mV
±50V DC                         1.88mV
±25V DC                           942μV
±12V DC                            471μV
±6V DC                             236μV
±3V DC                              118μV

Input impedance: Greater than 500K ohms
DC Voltage Input Accuracy: better than ±0.05% of input span

AC Current Input

AC Current Input Range (optional): An optional external AC current sensor is required to monitor AC current signals (Model 5020-350).
AC Current Range          Primary Turns
0 to 20A AC                                       1
0 to 10A AC                                       2
0 to 5A AC                                         4
0 to 2A AC                                       10
0 to 1A AC                                       20
AC Current Input Accuracy: better than ±0.05% of input span

Output (DC V/mA)

D/A Converter: 16-bit Σ-Δ
Current Output:
0-1mA, 0-20mA, 4-20mA
Compliance: 10V minimum (500 ohm load)
Accuracy: 0.025% of span
Voltage Output:
Ranges: 0-5V, 0-10V
Compliance: 10mA maximum with short circuit protection. 1 ohm output impedance
Accuracy: 0.025% of span
Accuracy (overall input to output): 0.075% of span

Output (Relay)

Relay: One SPDT electro-mechanical relay
Relay Ratings (CSA ratings):
25V DC @ 5A
120/240V AC @ 5A
Relay Time Delay: Adjustable alarm delay of up to 25 seconds
Contact Material: Silver-cadmium oxide (AgCdO)
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. 110mA @ 24V. 170mA @ 15V
Isolation (optical):
4-way (input/output/relay/power)
1500V AC for 60 seconds or 250V AC continuous
Radiated Field Immunity (RFI): EN61000-4-3, EN50082-1
Electromagnetic Field Immunity (EMI):
Less than ±0.25% of output span effect 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 listed (USA, Canada)

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: Output, zero/full-scale, relay setpoint and deadband are configurable via push-buttons and a standard calibrator.
LED Indicators: LEDs indicate power, status, calibration, 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