AC-LVDT Indicator, Single Channel (DMI-A1 Series)

Description

Replaces TIC-9000

The DMI-A1 Series AC LVDT Indicator is an accurate, high performance, programmable single channel AC LVDT indicator that delivers precise measurement for applications using AC LVDT (Linear Variable Differential Transformer) inputs. The 5-digit alphanumeric LED display provides easy-to-follow setup prompts for all LVDT parameters using the intuitive text configuration menus.

Used in conjunction with AC LVDTs, DMI-A1 Series Indicators make up a comprehensive, reliable, measurement system. The combination can be applied to a wide variety of demanding measurement applications, such as in process gaging in automated assembly machinery, differential measurements in thickness gaging, and other comparative measurements. Utilize the unit's optional relays and you have an economical solution when you need control functions for comparative and direct measurements in smaller automated systems.

The DMI-A1 Series AC LVDT Indicator is designed to be upgradeable for expansion of capabilities. You can order this as an indicator only and if you decide later to add an option like RS-232 to utilize the remote utility software package or to add communication to data acquisition software, it can be done at the factory.

The AC LVDT input module of the DMI-A1 Series AC LVDT Indicator is designed to drive and condition the signal from an LVDT transducer. The module contains 2 high-speed micro controllers and a 16-bit A/D converter. One of the micro controllers generates the sine wave for the AC LVDT excitation frequency. These frequencies are produced as multiples of the line frequency (either 50 Hz or 60 Hz that are selectable via the scrolling text menus).

The 16-bit A/D converter has over 130 dB noise rejection at the excitation frequencies and is capable of 40 Hz averaged output on 45 samples. Scrolling text menus provide quick access to a range of configuration modes for easy AC LVDT application setup.

If you require 2 sensor channels we also offer a Dual Channel LVDT Indicator Controller model number DMC-A2.

Features

115-240 VAC operation

Four independently
programmable set points

Supports all standard LVDTs

Optional User Selectable Features

0-10VDC analog output

4-20 mA or 0-20 mA sourcing

24VDC operation

Four 5.0A relays and
115 VAC operation

Four 5.0A relays and
24 VAC operation

RS-232 serial output

Ethernet

Free Software for meter configuration and LVDT calibration (with RS-232 option)

Directly replaces TIC-9000

Digital Display: 7-segment, 0.56” (14.2 mm) LEDs.
Display Color: productgridtitlemedium
Display Range: -19999 to 99999.
Display Update Rate: 10 times per second
Display Dimming: 8 brightness levels. Front panel selectable.
Polarity: Assumed positive. Displays – negative.
Annunciators: 6 productgridtitlemedium LEDs on front panel.
Front Panel Controls: PROGRAM, UP, and DOWN buttons

Standard voltage AC / DC power supply 85-265 V AC / 95-370 V DC

optional low voltage AC/ DC power supply 18-48 V AC / 10-72 V DC.

Operating Temperature: 0 to 50°C (32°F to 122°F).
Storage Temperature: -20°C to 70°C (-4°F to 158°F).
Relative Humidity: 95% (non-condensing) at 40°C (104°F).

Case Dimensions: 1/8 DIN, 96x48 mm (3.78” x 1.89”).
Case Depth: 137 mm maximum (5.39”).
Case Material: 94V-0 UL rated self-extinguishing polycarbonate.
Weight: 11.5 oz (0.79 lbs), 14 oz (0.96 lbs) when packed.

CE: Per EN-61000-3/4/6 and EN-61010-1

Excitation Voltage : 3 V RMS sine wave, zero DC component
THD < 2% (1.2 kHz).
Excitation Frequency: x 16 selectable frequencies available (1.2 kHz to 11.5 kHz). Crystal locked, software driven.
Temperature Coefficient: ± 50 ppm/ °C of full scale (typical).
LVDT Input : 30 kW input impedance. Synchronous demodulation of excitation carrier. >130 db rejection of excitation carrier.
Frequency Response: 500 Hz (–3 Db) low-pass filter.
Analog to Digital: Single channel SD A/D converter approaching 19-bit resolution. Ratiometric operation relative to excitation voltage magnitude.
Output Rate: 10 Hz averaged response output.
Line Frequency Rejection: 50 or 60 Hz noise rejection

Plug into carrier board from rear:

1. Four Relay Module: Four 5 A Form A Relays*.
*Form A Relay Specifications: 5 A 240 V AC, 4 A 24 V DC. Isolation 3000 V. UL and CSA listed.

Ordering Information

Optional power, analog output, communication and calibration configuration suffixes. The base Unit desigination is -100

• -2xx for operating on 24 V DC
• -9xx for 4 5A relays and 24 V DC operation
• -8xx for 4 5A relays and 115 V AC operation
• -x1x 0-10VDC analog output
• -x3x 4-20 mA sourcing
• -xx1 for serial ASCII RS-232
• -xx2 for Ethernet communications
• System Calibration (call factory for details)
• For specifications on other Macro Sensors LVDT signal conditioners, please visit the signal conditioner page.

Example: DMI-A1-212 is equipped with the following: 1. -2xx 24 V DC Operation; 2. -x1x 0-10 VDC analog output; 3. -xx2 Ethernet Communication


click the image for an enlarged view General Specifications Ordering Information Instruction Manual Tech Bulletin QuickStart Instructions Software: Digital Controller Configuration Utility Ethernet FAQ	Description Replaces TIC-9000 The DMI-A1 Series AC LVDT Indicator is an accurate, high performance, programmable single channel AC LVDT indicator that delivers precise measurement for applications using AC LVDT (Linear Variable Differential Transformer) inputs. The 5-digit alphanumeric LED display provides easy-to-follow setup prompts for all LVDT parameters using the intuitive text configuration menus. Used in conjunction with AC LVDTs, DMI-A1 Series Indicators make up a comprehensive, reliable, measurement system. The combination can be applied to a wide variety of demanding measurement applications, such as in process gaging in automated assembly machinery, differential measurements in thickness gaging, and other comparative measurements. Utilize the unit's optional relays and you have an economical solution when you need control functions for comparative and direct measurements in smaller automated systems. The DMI-A1 Series AC LVDT Indicator is designed to be upgradeable for expansion of capabilities. You can order this as an indicator only and if you decide later to add an option like RS-232 to utilize the remote utility software package or to add communication to data acquisition software, it can be done at the factory. The AC LVDT input module of the DMI-A1 Series AC LVDT Indicator is designed to drive and condition the signal from an LVDT transducer. The module contains 2 high-speed micro controllers and a 16-bit A/D converter. One of the micro controllers generates the sine wave for the AC LVDT excitation frequency. These frequencies are produced as multiples of the line frequency (either 50 Hz or 60 Hz that are selectable via the scrolling text menus). The 16-bit A/D converter has over 130 dB noise rejection at the excitation frequencies and is capable of 40 Hz averaged output on 45 samples. Scrolling text menus provide quick access to a range of configuration modes for easy AC LVDT application setup. If you require 2 sensor channels we also offer a Dual Channel LVDT Indicator Controller model number DMC-A2.	Features 115-240 VAC operation Four independently programmable set points Supports all standard LVDTs Optional User Selectable Features 0-10VDC analog output 4-20 mA or 0-20 mA sourcing 24VDC operation Four 5.0A relays and 115 VAC operation Four 5.0A relays and 24 VAC operation RS-232 serial output Ethernet Free Software for meter configuration and LVDT calibration (with RS-232 option) Directly replaces TIC-9000