Model 2612 | Strain Gauge and RTD via Ethernet
Features
  • Simultaneous measurement of four strain gauges or RTDs
  • 6 or 4-wire measurement with 200 nV resolution at a 6 Hz rate
  • Auto-calibration cycle measures excitation at remote strain gauge
  • Compatible with Linux and Windows
  • Use our design assistant to configure a system and calculate pricing

This module of the 2600 series adds four channels of strain gauge and/or RTD measurements . It reads the millivolt outputs of four strain/pressure gauges with 24-bit accuracy. Two voltage sense lines for the bridge input provide a true 6-wire measurement for the highest accuracy. The 2612’s microcontroller provides I/O services to the remote 2601 client via a category-5 cable.  The cable supplies isolated serial communication and power to the 2612’s microcontroller.

Analog Inputs
All measurements are made differentially to reduce common mode noise. All field wiring is connected directly to the 2612 via removable terminal blocks as shown in the photo.  This minimizes downtime should it become necessary to replace a module. It also eliminates the need for separate terminal block assemblies.

RTD Temperature Inputs
RTD temperature sensors with alphas of 385 or 392 may be connected in a bridge circuit in place of a strain gauge. External resistors may be added to the 2612’s terminal block to complete the bridge.

Auto standardize
The 2612 has automatic standardization circuitry that periodically measures on-boards reference standards to update the gain and offset of each channel. Subsequent readings use the newest computed gain, offset and bridge input voltage. Factory calibration constants are stored in non volatile memory so that 2612’s can be replaced without requiring field calibration.

Filtering
A digital filter provides 80dB rejection or greater in the range from 49Hz to 61Hz.

I/O Modules
A wide range of I/O module types are available.  Each I/O module type has a specialized function such as analog I/O, thermocouples,  relays, digital I/O, etc.  A low-cost category-5 patch cable connects each I/O module to its Communication Module. Any combination of I/O modules may be connected to a Communication Module.

All I/O modules have on-board DC/DC converters to power module circuitry. This feature helps to prevent ground loops and associated common mode voltage problems when the I/O modules are distributed over long distances.  In addition, the inter-module communication circuits are optically isolated so as to eliminate communication ground loops.

Model 2601 Communication module
Model 2608-0 16 analog and TC inputs (16 bit)
Model 2608-4 16 analog and TC inputs (16 bit), 4 analog outputs (16 bit)
Model 2608-8 16 analog and TC inputs (16 bit), 8 analog outputs (16 bit)
Model 2610 48 digital I/O, 5VDC to 24VDCModel 2612
Model 2612 Strain Gauge via Ethernet
Model 2620 4 encoder/counter/frequency interfaces (32 bit)
Model 2650 8 relay outputs, 0V to 240V @ 10A
Model 2652 SSR I/O Module (Supports 8 SSRs)
Model 2653 SSR I/O Module (Supports 16 SSRs)
Model 204 Power supply, 24 VDC @ 5A

 
Design Assistant
Use our design assistant to help you configure a system unique to your specifications and calculate pricing.

Software and Manuals

Full-featured Windows 98/NT/2000/XP and Linux libraries are available below in the software development kit, along with comprehensive sample programs.

2600 Hardware Manual Released 9/16/08
2600 Programming Guide Released 9/16/08
2600 Software Development Kit Released 11/18/08

 

Specifications

Function
Analog Inputs Resolution 24 bits
Input channels 4
Conversion rate 6.875 to 3500 samples/second for each channel
Input range ±1/2 of reference
Input impedance 110 kOhm.
Power Outputs Output channels 4
Output power 1.25V, 2V, 3V or 5V, ±10%@ 1 to 25 mA for each channel.
Mating Connectors
(*) = included with module		 IOM port (qty 1) RJ-45 plug, AMP 554169 or equivalent
Analog inputs (qty 4) RJ-45 plug, AMP 554169 or equivalent
Analog inputs (qty 4) (*)Pluggable TB, 8-pin, RIA 31166110 or equivalent
Temperature Operating range 0 to 70°C
Power Input power +24V ±5% @ 60mA.
Dimensions Outer dimensions 5.0H x 5.0W x 1.8D inches, including DIN mounting frame. Depth is specified with respect to surface of DIN rail support panel; additional clearance required for field wiring.

 

Prices

Model 2600 Series Industrial I/O via Ethernet Please use our design assistant
Model 2601 Communication Module Qty 1: $463 Qty 2-9: $421
Model 2612 Strain Gauge Qty 1: $395 Qty 2-9: $375
Model 204 24 V power supply Qty 1: $122 Qty 2-9: $122
Model 26C3 3 ft category-3 cable Call for current prices
Model 26C50 50 ft category 5E Call for current prices
Model 26C100 100 ft category 5E Call for current prices
Model 2600C1 Power Daisy Chain cable Qty 1: $14.55 Qty 2-9: $14.55
Model 2601C1 3 ft. Cat 3 or higher patch cable Qty 1: $10 Qty 2-9: $10
Model 2601C2 6 ft. Null modem cable Qty 1: $8 Qty 2-9: $8