SECTION 1 - TECHNICAL SPECIFICATION
Page 1.1
pickering
MILLIVOLT THERMOCOUPLE SIMULATOR MODULE 41-760
SECTION 1 - TECHNICAL SPECIFICATION
PXI Millivolt Thermocouple Simulator 41-760
pickeringtest.com
ISSUE 4.0 MAR 2021
y32, 24, 16 or 8 Channel Low Voltage Source
yIdeal For Thermocouple Simulation
y+/-100 mV, +/-50 mV and +/-20 mV Output Ranges
y0.7 µV Voltage Resolution (+/-20 mV Range)
yTwo-Wire Output for Each Channel
yRemote Sense for Breaking Ground Loop Effects
yOpen Circuit Simulation
ySupported in PXI or LXI Chassis
yKernel and VISA Drivers
y3 Year Warranty
Voltage
Generator 1
Vo1 Vcold1
Channel 2 Channel 32Channel 1
Voltage
Generator 2
Vo2 Vcold2
Voltage
Generator 32
Vo32 Vcold32
78-Pin D-Type Front Panel Connector
Functional Diagram for the 41-760-001 Millivolt Thermocouple Simulator Module
The 41-760 is a low voltage source module ideal for
simulating the operation of a thermocouple, available with
a choice of 32, 24, 16 or 8 channels. Each channel of the
41-760 provides a low voltage output across two connector
pins capable of providing ±20 mV with 0.7 µV resolution,
±50 mV with 1.7 µV resolution and ±100 mV with 3.3 µV
resolution, covering most thermocouple types.
The use of two wire outputs ensures that the 41-760 can
be used to accurately simulate low voltages even in the
presence of common mode voltages in the system. Each
Vcold connection is independent permitting the 41-760 to
be connected to multiple cold junctions.
Each simulation channel is able to provide an open circuit
setting to simulate faulty wiring connections to a sensor.
For improved accuracy each channel of the Low Voltage
Source carries accurate calibration data stored in EEPROM
on the module. Regular calibration of the channels is not
necessary.
When used for Thermocouple Simulation the 41-760 can
be connected straight into the measurement system,
bypassing the need for Isothermal Blocks and Cold
Junction Compensation. To aid in this, Pickering offers a
78-pin connector solution that has 32, 24, 16 or 8 copper
twisted pairs terminated with mini copper thermocouple
plugs. Use of copper connections minimizes offset voltage
generation in the connection interface.
Alternatively Pickering can also supply connector blocks
that convert the copper connections of the module’s 78-pin
connector to that of the required thermocouple type.
