Michigan Scientigic MicroTC Manuale utente

User Manual

MicroTC

Michigan Scientific

Corporation

Details and speciﬁcations provided in this document are purely for informational

purposes and are subject to alterations. No liability is accepted for errors or

omissions.

Michigan Scientiﬁc Corporation

8500 Ance Road

Charlevoix, MI 49720

Revision Date: 2/23/2023 8:47 a.m. twnachazel

Contents

Introduction 1

Installation 3

Operations 5

Troubleshooting Guide 8

1.020

1.259

.192

.292

.392

.492

.684

.218

.324

REV

DESCRIPTION

DATE

CHANGE #

- - -

- - - - -

1016813

CUSTOMER CODE:

PRODUCT LINE:

PRELIMINARY

WEIGHT

PROJECT CODE:

- -

ABM

MicroTCv2b Housing Full Assembly

1016813

06/16/21

UNLESS OTHERWISE SPECIFIED:

SCALE: 2:1

SHEET 1 OF 1

REV

DWG. NO.

SIZE

DESCRIPTION:

NAME

DATE

MFG APPR.

ENG APPR.

CHECKED

DRAWN

FINISH

MATERIAL

DIMENSIONS ARE IN INCHES

TOLERANCES:

.XXXX

.0010

.XXX

.005

.XX

.01

FRACTIONAL

ANGULAR: MACH

BEND

PROPRIETARY AND CONFIDENTIAL

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

MICHIGAN SCIENTIFIC CORPORATION.

ANY REPRODUCTION IN PART OR AS A

WHOLE WITHOUT THE WRITTEN

PERMISSION OF MICHIGAN SCIENTIFIC

CORPORATION IS PROHIBITED.

MICHIGAN SCIENTIFIC CORPORATION

8500 ANCE ROAD

CHARLEVOIX, MICHIGAN 49720

www.michsci.com

• Provides cold junction compensation, ampliﬁcation

and linearization of K-type thermocouple signals

• Input signal is ampliﬁed to 5 mV per degree Celsius

over a wide input range

• Signal bandwidth, 2.35 kHz (other bandwidths

available)

• May be used in conjunction with Michigan Scientifc

Slip Ring Assemblies

• Reduces errors due to temperature gradients across

dissimilar metals in the slip ring and magnetic

interference

• Input signals can be grounded or isolated

• More than one ampliﬁer may be used with a single

control unit

The MicroTC

Linear Thermocouple

Ampliﬁer...

REV DESCRIPTION DATE BY CHANGE #

+ - - -

- - - - -

1016813

CUSTOMER CODE:

PRODUCT LINE:

PRELIMINARY

WEIGHT

PROJECT CODE:

- -

ABM

MicroTCv2b Housing Full Assembly

1016813

06/16/21

UNLESS OTHERWISE SPECIFIED:

SCALE: 2:1

SHEET 1 OF 1

REV

DWG. NO.

SIZE

DESCRIPTION:

NAMEDATE

MFG APPR.

ENG APPR.

CHECKED

DRAWN

FINISH

MATERIAL

DIMENSIONS ARE IN INCHES

TOLERANCES:

.XXXX ± .0010

.XXX ± .005

.XX ± .01

FRACTIONAL ±

ANGULAR: MACH ±

BEND ±

PROPRIETARY AND CONFIDENTIAL

THE INFORMATION CONTAINED INTHIS

DRAWING IS THE SOLE PROPERTY OF

MICHIGAN SCIENTIFIC CORPORATION.

ANY REPRODUCTION IN PART OR AS A

WHOLE WITHOUT THE WRITTEN

PERMISSION OF MICHIGAN SCIENTIFIC

CORPORATION IS PROHIBITED.

MICHIGAN SCIENTIFIC CORPORATION

8500 ANCE ROAD

CHARLEVOIX, MICHIGAN 49720

www.michsci.com

.192

.292

.392

.492

.684

1.020

1.259

.218

.324

1.020

1.259

.192

.292

.392

.492

.684

.218

.324

REV

DESCRIPTION

DATE

CHANGE #

- - -

- - - - -

1016813

CUSTOMER CODE:

PRODUCT LINE:

PRELIMINARY

WEIGHT

PROJECT CODE:

- -

ABM

MicroTCv2b Housing Full Assembly

1016813

06/16/21

UNLESS OTHERWISE SPECIFIED:

SCALE: 2:1

SHEET 1 OF 1

REV

DWG. NO.

SIZE

DESCRIPTION:

NAME

DATE

MFG APPR.

ENG APPR.

CHECKED

DRAWN

FINISH

MATERIAL

DIMENSIONS ARE IN INCHES

TOLERANCES:

.XXXX

.0010

.XXX

.005

.XX

.01

FRACTIONAL

ANGULAR: MACH

BEND

PROPRIETARY AND CONFIDENTIAL

THE INFORMATION CONTAINED IN THIS

DRAWING IS THE SOLE PROPERTY OF

MICHIGAN SCIENTIFIC CORPORATION.

ANY REPRODUCTION IN PART OR AS A

WHOLE WITHOUT THE WRITTEN

PERMISSION OF MICHIGAN SCIENTIFIC

CORPORATION IS PROHIBITED.

MICHIGAN SCIENTIFIC CORPORATION

8500 ANCE ROAD

CHARLEVOIX, MICHIGAN 49720

www.michsci.com

Input

Range (5 mV/C Linear Output) -25 °C to 400 °C

Range (with polynomial equation) -200 °C to 970 °C

Output

Range Min = -0.77 V; Max = 4.92 V

Measurement Error ±2 °C Typical; ±3 °C Max

Noise

0.01 Hz - 10 Hz 0.8 μV p-p

Dynamic Response Higher Bandwidths Available

Frequency Response -3db 2.35 kHz

Settling Time 0.1% 36 μs

Power Requirements

Voltage (V) +7 Vdc to + 16 Vdc

Quiescent Current 3.25 mA max

Environment

Speciﬁcation 0 °C to +50 °C (+32 °F to +122 °F)

Operation -40 °C to +100 °C (-40 °F to +212 °F)

Mechanical

Weight 3.9 g (0.14 oz)

Overall Length 32.0 mm (1.259 in)

Overall Height 8.2 mm (0.324 in)

Overall Width 17.4 mm (0.684 in)

Speciﬁcations

To electrical ground

Signal Label Color

Supply Voltage V Blue

Ground G Gray

Signal Output S Yellow

Terminal Signals

Installation

Electrostatic Sensitivity

The MicroTC is an electrostatic sensitive device. The terminals should

not be touched except during soldering. Soldering should be performed

at electrostatic discharge protected workstations. Wires attached to the

MicroTC should not be touched either.

If an electrostatic discharge protected workstation is not available, use a

grounded wrist-strap and ground the MicroTC. Do not handle the device in

areas where static charges are obviously present. Always store the MicroTC

in an anti-static bag or container when not in use.

Electrical Installation

Wires soldered to the signal terminals should be covered with heat shrink

tubing. This will both protect the terminals from electrical shorting as well as

provide strain relief for the wires.

The signal terminals on the MicroTC are color coded and labeled to help

determine which supply or output signal corresponds to which terminal. The

signals and terminal colors are shown in the table below:

Linearization Formulas

The output of the MicroTC is a linear 5 mV/°C over an input range

of -25 °C to 400 °C. Outside of this range, linearizing formulas

can be used to determine temperature within the speciﬁed error.

The following formulas use the voltage from the ampliﬁer as the

independent variable and generate temperature in °C.

T = Temperature in °C

V = Voltage from ampliﬁer

Range: -60 °C to 970 °C

T = 0.1744 x V4- 0.8386 x V3- 1.4378 x V2+ 204.33 x V - 1.6323

Range: -200 °C to 100 °C

T = -137.02 x V4+ 35.24 x V3- 0.3931 x V2+ 207.1 x V - 1.1512

Power Supply

Data Recording Device

Power Supply

Operations

The MicroTC must be powered with +7 to +16 V and a common. See

Electrical Installation section of this manual for instructions on how to

connect these supplies to the proper terminals. The MicroTC signals should

be measured with respect to the common terminal.

Current ﬂows in the ground line, so there will be a voltage drop along the

length of the conductor. This will create an oﬀset if the signals are measured

with respect to the common at the Remote Ampliﬁer Control Unit. It is

recommended that the signals are measured with respect to the common

wire at the ampliﬁer. This can be accomplished by adding a second common

line from the ampliﬁer to the recording device.

Power Supply

Data Recording Device

Slip Ring

The output high is measured relative to the ground wire. It is

recommended that a separate wire for signal common is added to

the common terminal to reduce errors from voltage drops along

the power common wire. When using the MicroTC with a slip ring

assembly, a separate signal common can be added to the stator of a

slip ring to decrease the amount of rings needed, but it is important to

place the ampliﬁer as close as possible to the slip ring.

The thermocouple sensor should be attached using the provided

mating connector (Omega± HMPW-*-M). If a thermocouple input is

left unused or if the thermocouple opens, the output of the ampliﬁer

will rise to V+. The ampliﬁer will not be damaged if a thermocouple is

left unattached.

Problem Potential Cause Test to Verify Problem Solution

Operation with PS Series Ampliﬁer Control Unit

Any Michigan Scientiﬁc Remote Ampliﬁer Control Unit will provide

±15 Volts and common. These control units have switches that control

bridge excitation and shunt calibration. For use with MicroTC units,

the Bridge Excitation switch should be turned on, and the Shunt

Calibration switch is unused.

The Remote Ampliﬁer Control Units reverse the polarity of the ±15 V

terminals when the bridge excitation switch is oﬀ. The MicroTC-S will

power oﬀ in this condition.

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