Data Acquisition
Starter Kit

DI-194RS

• 10-bit Resolution
• WinDaq Software
• Cable Included
• Only $24.95

DI-924MB

Multi-Channel Temperature Control Modules
Thermocouple or Millivolt Input
Limit Alarms or Discrete Outputs

Standard Modbus-RTU protocol with high-speed RS-485 communication (up to 115K bps) 16-bit sigma-delta A/D yields 0.1°C resolution and 0.5°C measurement accuracy Thermocouple linearization and sensor break detection ensure reliable measurements Four discrete outputs enable local temperature limit alarms or host-controlled on/off switching Heavy-duty 1A solid-state relays provide dependable on/off control of industrial devices Self-calibration lowers maintenance costs by reducing periodic manual calibration checks Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Four-way isolation eliminates potential ground loops between power, input, output and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication.

Note: Pricing outside the U.S. will be higher to account for shipping, taxes, duty, currency fluctuation, local warranty and technical support in your country. DI-900MB modules have typical lead times of 1-2 weeks.

Part Number	Description	Price (US)	DATAQ Store
DI-924MB	4-channel thermocouple/millivolt input module.	$415	Quantity:

Product Highlights

This signal conditioner is a four-channel analog input module with four discrete outputs. It filters and linearizes thermocouple inputs while providing isolation between input, output, power, and network circuits. Cold junction compensation and upscale/downscale sensor break detection are standard. AC and DC power sources are supported with nonpolarized, diode-coupled terminals.

The programmable inputs accommodate eight thermocouple types plus wide-range millivolt signals. Flexible discrete outputs operate as alarms or on/off controllers. As limit alarms, each discrete output can be configured with high and/or low setpoints exclusively tied to an analog input channel. Alarm trips function without host communication enabling low-cost stand-alone alarms as well as local backup for the primary control system. Otherwise, on/off control is based on commands issued by the host system. See the Circuit Connection Diagrams.

Combining flexible transmitter functions, mixed signal I/O, alarm support, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details).

Everything you need to complete your network is available from DATAQ Instruments, Inc. - isolators, signal converters, signal boosters, power sources, and mounting hardware. Check out the Accessories.

Data Acquisition Product Links

(click on text to jump to page)
Data Acquisition | Data Logger | Chart Recorder | Thermocouple | Oscilloscope | Load Cell | Pressure Sensor