Skip To Content

D1300M Modbus Modules with Thermocouple Input

$325.00

The D1300M modules measure thermocouple temperature sensors. Thermocouples consist of two wires made from dissimilar metals. The wires normally are joined or bonded together at one end to create a junction. This junction of different metals generates a predictable voltage output with changes in temperature.

The D1300M thermocouple input modules use an isolated 15-bit analog to digital converter to measure the thermocouple output voltage, performs cold-junction compensation and linearizes the digital data. The digital data values are scaled into 16-bit unsigned integer data format that represent a percentage of the full-scale input range. The data values are transmitted to a host computer using the Modbus RTU serial protocol via an RS-232 or RS-485 serial port.

The D1300M thermocouple input modules contain two discrete digital input and three open-collector digital outputs. The digital outputs can be used to control solid-state relays and annunciators.  They can be pulled up to +30Vdc and sink up to 30mA without damage.  The discrete digital inputs can accept +/-30Vdc signals without damage.  The discrete switching levels are <+1Vdc = logic “0”, >+3.5Vdc equals a Logic “1”.

Because the Modbus protocol does not support Echoing the RS-232 versions of D1000M series are limited to one module per serial port. Applications requiring more than one module should use RS-485.

Use the links below to download a Datasheet, User’s Manual or view the Modbus Scaling Example.

Download Datasheet

Download Manual

Modbus Scaling Overview

The D1300M series modules can also be mounted on a DIN-Rail using the MK-1 mounting kit.

Thermocouple Measurement Ranges:
[one_half]J= -200 to +760 C
K= -150 to +1250 C
T= -200 to +400 C
E= -100 to +1000 C [/one_half][one_half_last]B= 0 to +1820 C
S= 0 to +1750 C
R= 0 to +1750 C
C= 0 to +2315 C[/one_half_last]

Compare

Additional information

Dimensions 3.6 × 2.45 × 1.1 in
Specifications

• Types: J, K, T, E, R, S, B, C
• Accuracy (errors from all sources) from 0 to +40C ambient: +/-1deg C max (J,K,T,E types). +/-2.5 deg C max for (R,S,B,C types).
• Resolution: 1 degree (C or F).
• Common mode rejection: 100db at 50/60 Hz.
• Lead resistance effect: <20uV per 350 ohms.
• Input burnout protection to 250 VAC.
• Input impedance: 100 megohm min.
• Three open-collector digital outputs.
• Two digital inputs.
• Open thermocouple indication.
• Automatic Cold-junction Compensation