Thermocouple Meters, Temperature Signal Converters, Thermocouple Converters

Specification Examples

Name

Thermocouple Meter

Model

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

Input Section

Inputs

1 Channel Thermocouple: K / J / R / E / T / B / N / S

Measurement Range

Type	Range A (0.1°C)	Range B (1°C)	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 1320°C	±0.5% FS
S	450.0 to 1760.0°C	50 to 1760°C	±0.5% FS

*Accuracy specified with output update rate set to 100ms. ※Measurable at 0.1°C resolution within measurement range.

Cold Junction Error

±2°C

Resolution

Range A: 0.1°C / Range B: 1°C

Burnout Indication

Displays "bAhn" in 7-segment characters on the display.

Calibration

Adjustable via zero/span reference voltage inputs for each thermocouple type (Commands via CAN/USB).

Calculation Section

Moving Average Count

1 - 99 (Display moving average: 1 - 9)

Control Input

None or 1 Channel (depends on model) [D2] option adds 2 channels

(Settings)

Functions configured per control input (CTL) for external control.
[Functions] Hold (Current, Max, Min, Max Peak-to-Peak) / Zero Shift

(Operation)

Reflected by shorting (or opening) the control input (CTL*) terminal (ON logic) to GND.

(Data Comm.)

Command control available via communication (USB, CAN, RS-485). *Commands set via communication cannot be cleared via terminal inputs; a reset execution is required.

Memory Backup

Non-volatile memory (EEPROM)

Display Section

Display (Numeric)

5-digit 7-segment LED, 9mm character height HT-24: Red LED / HT-24-G: Green LED (Option)
Display range: -19999 to 99999 Overflow: OL Zero display: Leading zero suppression
Display update rate: 0.3 sec (configurable from 0.1 to 9.9 sec) Display accuracy: 20ppm ± 1 digit at 23°C

Decimal Point

Semi-fixed, configured in program mode (0: □□□□□, 1: □□□□.□ to 4: □.□□□□)

Display (Indicator)

1 LED, configurable for Power / Control Input

USB Communication Section

USB Comm. Specs

USB 2.0 (Serial port communication via USB Virtual COM, 230.4kbps)

USB Comm. Functions

Read/Write settings / Continuous measurement data output

Update Rate

2ms - 9999ms (configurable in 2ms steps)

General Specifications

Operating Temp/Humid

-10°C to +50°C, 35 to 85%RH (non-condensing)

Power Supply

7-60 VDC (with reverse polarity protection) / USB host power: 5V

Power Consumption

3W or less

Isolation

Power supply / Thermocouple input / Other inputs & outputs

Withstand Voltage

Power supply / Thermocouple input / Other inputs & outputs: 500 VDC for 1 minute between terminals

Weight

Approx. 60g

CAN Option

Comm. Specs

CAN 2.0B, 10k / 20k / 50k / 100k / 250k / 500k / 1M bps Format (INTEL/MOTOROLA), Frame (11-bit/29-bit)

Comm. Functions

Read/Write settings / Continuous measurement data output

Config Items

CAN Transmit ID, CAN Receive ID

Update Rate

2ms - 9999ms (configurable in 2ms steps)

RS-485 Option Please consult us for Modbus RTU support

Max Connections

32 units (max)

Comm. Format

2-wire multi-drop serial communication

Comm. Method

Asynchronous

Comm. Standard

RS-485

Baud Rate

9600bps / 19200bps / 38400bps (configured in program mode)

Data Format

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

Comm. Code

ASCII

Comm. Functions

Read/Write settings / Measurement data output (responds to request commands)

Analog Output Option

Output Signals

[E1] 0 - 10V [E5] 0 - 5V [R1] ±10V [R5] ±5V [I1] 4 - 20mA 【Select Model】

D/A Conversion

DAC conversion method

Resolution

16-bit (50,000 or more)

Load Resistance

Voltage output: 4.7kΩ or more Current output: 300Ω or less

Accuracy

Voltage output: ±0.1% of FS @23°C Current output: ±0.1% of FS @23°C

Temp Drift

±200ppm/°C or less

Output Scaling

Custom scaling available via full-scale and zero-scale configurations

Update Rate

2ms - 9999ms (configurable in 2ms steps)

Response Time

1ms or less (0 to 90% response)

Comparator (Alarm) Output Option

Config Method

Configured in program mode

Outputs

2 channels / 4 channels (depending on model selection conditions)

Output Form

Isolated solid-state output (PhotoMOS relay), non-polarized. Resistance between COMP-COM is 50Ω or less when comparator condition is ON.

Load Voltage

Peak AC/DC 280V, 100mA (resistive load). Max ON resistance 50Ω or less.

Output Logic

Comparisons performed with polarity (0 is greater than minus numbers).

[Hi-Limit]	ON at or above set value
[Lo-Limit]	ON at or below set value
[In-Range]	ON within range, OFF out of range
[Out-Range]	ON out of range, ON within range

Update Rate

Depends on analog output update rate configuration. Response time 1ms (max).


*BXF-DN2* DIN Rail Fixture (Sold Separately)	*HT-2451* No Display	*HT-2431* With Display
> BXF-DN2 Page	> 2451 / 2431 Explanation

Calculation ・Moving average (Max 99) ・HOLD [Current / Max / Min / Peak-to-Peak Max] ・Zero shift
Thermocouple Meter

Output ・16-bit analog ・Alarm ・CAN ・RS-485 ・Modbus ・USB
PC, PLC, Logger, Oscilloscope, Indicator lights, etc.


LCD Monitor	No Display	Monitor Output Free monitor software available **Monitor is not included

Input Various Thermocouples
K, J, R, E, T, B, N, S

Thermocouple Meters Lineup Digital Panel Meters for Temperature Measurement, Thermocouple Temperature Converters, Thermocouple Converters, Indicator Alarms

Compatible with Various Thermocouple Types K, J, R, E, T, B, N, S

Application Examples

Non-contact, multi-point temperature measurement for production lines: Radiation temperature sensors & CAN

Temperature measurement in wind tunnel experiments: Vehicles, architectural and civil engineering structures, etc.

Converting thermocouple signals to CAN

Integration into burn-in testing equipment

Fluid temperature difference measurement for flow rate error correction

Features

Supports thermocouple types K, J, R, E, T, B, N, and S via setting switch

Measurement Range－270°C to ＋1820°C

Measurement Resolution 0.1°C / 1°C

Two-point scaling setup(Linear approximation formula)

USB Type-C [Standard]

RS-485 [Optional]

Modbus RTU [Under Development]

Product Lineup

HT-4801

HT-24

HTL-24

With SD Logger

Compact Multi-Channel

Customization Available [Please consult us]

Customization Examples [Available for Purchase]

Enclosure Box Type

Multi-CH with Display

Multi-CH Radiation Thermometer (CAN Output)

With SD Logger

Rack Mount

Handy Type

Selectable Connectors, Display Options, Power Supplies, etc.

Smart Configuration & Logging Manage settings, print reports, and log CSV data with our free LINKSHIP software

CSV Logging

Compare Settings

Save & Copy via PC

Prevent Misoperation

Reduce Setup Steps

USB Type-C Standard Equipment: Settings *HT/HTL-24 also supports logging and power supply

Easy Wiring & Installation

Versatile Use Cases

Portable Measurement

Panel Embedding

DIN Rail Mounting

Specification Examples

Other Related Products Panel Meters / Signal Converters / Indicators

Thermocouple Meters Lineup
Digital Panel Meters for Temperature Measurement, Thermocouple Temperature Converters, Thermocouple Converters, Indicator Alarms

Measurement Range
－270°C to ＋1820°C

Measurement Resolution
0.1°C / 1°C

Two-point scaling setup
(Linear approximation formula)