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Name

Thermocouple meter

Model

HT-2401 / HT-2411 / HT-2431 / HT-2451

Input

Number of input

1 point　Thermocouple

Measuring range

TC types	Range A(0.1℃)	Range B(1℃)	Accuracy*
K	-170.0 to 1370.0 °C	-250 to 1370 °C	(±0.5%FS)
J	-200.0 to 1100.0 °C	-200 to 1100 °C	(±0.5%FS)
R	100.0 to 1760.0 °C	-50 to 1760 °C	(±0.5%FS)
E	-140.0 to 1000.0 °C	-260 to 1000 °C	(±0.5%FS)
T	-240.0 to 400.0 °C	-270 to 400 °C	(±0.5%FS)
B	480.0 to 1820.0 °C	100 to 1820 °C	(±0.5%FS)
N	580.0 to 940.0 °C	-220 to 1300 °C	(±0.5%FS)
S	450.0 to 1760.0 °C	50 to 1760 °C	(±0.5%FS)

*Accuracy is specified by setting output update time of 100 ms.
*Measurements can be made with a resolution of 0.1°C within the measurement range.

Cold junction compensator accuracy

±2℃

Measurement resolution

Measurement range A: 0.1°C / B: 1°C

Burnout

display "bAhn" in 7seg characters

Input connector

Plug type [Standard] Spring lock / [Option] M2 screw

Calibration

Adjustable with zero reference voltage input and span reference voltage input for each thermocouple type
(Adjustment command via CAN or USB command)

Calculation

Moving Average Number

1 to 99

Control input

None or 1 point (depending on model)　　　[D2] Option adds 2 points

[Settings]

Set functions per control input (CTL) for external control

[Functions]

Hold (current value, max value, min value, max fluctuation range),
zero shift

[Operation]

Control Input (CTL*) Terminal (ON Logic):
Short to GND (Open) for ON, Open (Short) for setting content to take effect

[Commnication]

Command control possible via communication (USB, CAN, RS-485)
*Commands set via communication cannot be canceled by terminal input. Reset execution is always required

Setting Value Memory

Non-volatile Memory (EEPROM)

Display

Display Color

[Standard] HT-2401 Red LED
[Option]HT-2401-G Green LED

Indicator [Numerical Display]

5-digit, 7-segment LED Character height 9mm
Display range:-19999 to 99999
Over indication: OL / Zero indication: Leading zero suppress

Decimal point position

Semi-fixed Set in program mode. [0] *****, 　[1] ****.* to [4] *.****

Display update time

0.3 sec [settable from 0.1 to 9.9 sec]

Display accuracy

20ppm ± 1 digit

Display Moving Average

1 to 9

Indicator

LED 1 point [selected from power/ control input]
　

USB communication

Specification

USB2.0 [Serial port communication by USB virtual COM 230.4kbps]

Function

Writing/reading of set values/ Continuous output of measured values

Output update

2 to 9999ms, settable in 2ms increments
　

General Information

Operating temp./humidity

-10°C to +50°C / 35 to 85%RH [non-condensing]

Power supply

7 to 60V DC with reverse connection protection. Power supply from USB host: 5V

Power consumption

3W or less

Isolation

Power supply / TC input / Other input/output

Withstand voltage

Between each terminal of the above isolation:
DC 500V for 1 minute

Weight

Approx. 60g
　

CAN Option

Specifications

CAN2.0B 10 k / 20 k / 50 k / 100 k / 250 k / 500 k / 1M bps　[Format] INTEL/MOTOROLA, [Frame] 11bit/29bit

Function

Writing/reading of set values/ Continuous output of measured values

Setting item

CAN transmit ID, CAN receive ID

Output update

2ms to 9999ms 　settable in 2 ms increments
　

RS-485 communication option　Modbus RTU support is available upon request.

Connected units

32 units [max.]

Format

2-wire multi-drop serial communication

Method

Asynchronous

Standard

RS-485

Speed

9600bps / 19200bps / 38400bps Set in program mode

Data format

Start bit: 1 bit / Stop bit: 1 bit / Data length: 8 bits / Parity bit: None

Code

ASCII

Function

Writing/reading set values/measurement value output [response to request command]
　

Analog output option

Output signals

[E1] 0 - 10V　[E5] 0 - 5V　[R1] ±10V　[R5] ±5V　[I1] 4 - 20mA　 [Select a model]

D/A conversion

DAC conversion method

Output resolution

16bit [50,000 or more]

Load resistance

[Voltage output] 4.7kΩ or more / [Current output] 300Ω or less

Output accuracy

[Voltage output] ±0.1% of FS @ 23℃/ [Current output] ±0.1% of FS @ 23℃

Temp. fluctuation

±200ppm/℃ or less

Output scaling

Arbitrary scaling is possible by full scale and zero scale settings

Output update

2 to 9999ms settable in 2ms increments

Input/output delay

Output update time + analog rise time 150 μs max.
　

Alarm [Comparator] output option

Setting method

Set in program mode

Number of outputs

2 points (or 1 point)　depends on the models　 1 point for line driver input and analog output with comparator output specification.

Output form

Isolated non-contact output [photo-MOS relay] No polarity.
When comparator operating condition is ON, resistance between COMP and COM
50 Ω or less

Output load voltage

Peak AC/DC280V 100mA [resistive load] / ON resistance 50Ω or less

Output logic

Comparison is made with polarity [0 is greater than minus]

[Over]	ON when set value or more
[Under]	ON when set value or less
[Within range]	ON within the set value, OFF outside the range
[Out of range]	ON outside the set value, OFF within the range

Update time

Depends on analog output update time setting. Response time 1ms [max.]

Calculation ・Moving average Max. 99 ・HOLD [Current value/Max. value/Min. value/Max. variation range] ・Zero shift
HT-24 series
Power supply ・7 to 60V DC ・USB power 5V	Setting ・LINKSHIP software ・Setting unit PL-5A


*BXF-DN2* DIN rail attachment [sold separately]	*HT-2451* Display-less type	*HT-2431* With display type
>BXF-DN2 page

Load cell/Pressure/Strain	CAN to analog
DC current	DC voltage
Thermocouple meter	Thermistor meter
RTD meter	Resistance Meter
Speed/Count, Pulse Freq.	Torque/Freq.deviation

Thermocouple meter HT-2401 Digital Panel Meters for Temperature Measurement, Thermocouple Temperature Converters, Indicating Alarm Meters

Compatible with various thermocouple[TC] types K, J, R, E, T, B, N, S

Usage example *The figure below includes optional functions

Body Type

Front USB

Rear USB, Front waterproof gasket included

DIN rail mounting, with indicator

DIN rail mounting, no indicator

Customization ［Minimum of 1 unit: Please consult with us］

Output 2ms update

CAN [Option]]

RS-485 [Option]

16bit analog [Option] Resolution 50,000 or more／Full scale and zero scale settings, output zero adjustment

Alarm [Option] 1 to 4points [Depends on model]

USB Type-C [Standard feature] Data logging, setting

Reasonable and easy-to-use 1CH type

Smart configuration and logging

Setting management, report printing, and CSV logging with dedicated software LINKSHIP [free of charge]

CSV logging

Compare set value lists

Save and copy of set

Prevention of misoperation

Quickly set up multiple units

USB Type-C connector standard：For setting / logging / power supply

Setup unit without LINKSHIP or PC required [Sold separately]

Easy wiring and installation For on-site usability

Various ways to use

Carry and measure

Built in panel

DIN rail mounting

Power supply 7 to 60V DC, and 5V USB power supply

Isolation Electrical isolation between power supply/ Thermocouple input/other inputs and outputs

Applications

Specifications

Related Products

Other measurement categories：EX Series

CAN, 16bit analog, Alarm, RS-485, Modbus

Smart configuration / Prevents unintentional operation

USB Type-C standard equipment

Built in box, multi-CH, and function changes, etc

Thermocouple meter HT-2401
Digital Panel Meters for Temperature Measurement, Thermocouple Temperature Converters, Indicating Alarm Meters

Usage example　*The figure below includes optional functions

Customization　［Minimum of 1 unit: Please consult with us］

RS-485　[Option]

16bit analog　[Option]
Resolution 50,000 or more／Full scale and zero scale settings, output zero adjustment

Alarm　[Option] 1 to 4points　[Depends on model]

USB Type-C　[Standard feature] Data logging, setting

Easy wiring and installation　For on-site usability

Isolation　Electrical isolation between power supply/ Thermocouple input/other inputs and outputs