Specifications

Name

Thermocouple meter

Model

HT-4801

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

Terminal block 7.62mm pitch M3 free terminal 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

Output moving average

1 to 99 [Display moving average]1 to 9

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, span shift, zero set, span set

　ON Logic

Normally open, normally closed

　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

Indicator
(Numerical Display)

6-digit, 7-segment LED Character height 14.2mm
[Standard] HT-4801 Red LED / [Option] HT-4801-G Green LED
Display range:-199999 to 999999
Over indication: OL / Zero indication: Leading zero suppress

Decimal point position

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

Update time

0.3 sec (settable from 0.1 to 9.9 sec)

Display accuracy

20ppm ±1digit

Indicator
4 round LEDs

[IN] Not in use
[RUN] Illuminates when function setting is ON
[COMP1][COMP2] Illuminates when comparator output is ON [Option]

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

Update time

1 to 9999ms, settable in 1ms increments
(No output when output update time is set to 1 to 9)

General Information

Operating temp./humidity

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

Power supply
[Select a model]

[AF] 100-240VAC (Maximum rated 85-264VAC) 50/60Hz
[DF] 9.6-30VDC (Maximum rated 9-36VDC) with reverse connection protection

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. 340g

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

Update time

1 to 9999ms 　Settable in 1 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

Communication 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 method

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℃

Temperature fluctuation

±200ppm/℃ or less

Output scaling

Arbitrary scaling is possible by full scale and zero scale settings

Update time

1 to 9999ms settable in 1ms increments

Input/output delay time

Output update time + analog rise time 150 μs max.

Alarm [Comparator] output option

Setting method

Set in program mode

Number of outputs

1 to 4 points　[depends on the models]

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 for C2 option [2 comparator] / 100 Ω or less for C1 option [1 comparator]

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 range, OFF outside the range
[Out of range]	ON outside the set range, OFF within the range

Update time

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

Ethernet Communication option

Connector

RJ-45 (Network Interface) Lantronix XPort

Interface

100BASE-TX／10BASE-T (Auto-sensing)
Transmission Speed Standard: Category 5/Category 4

Specifications

Protocol: TCP/IP Method: Telnet Communication Connection

Output update

Same as USB communication 1 to 9999ms

Transmission Compatibility

DIX Ethernet Version2.0 IEEE 802.3

LED Indicators

100BASE-TX／10BASE-T

Link/Activity Indicator

Full Duplex/Half Duplex (Telnet cannot handle encrypted communication networks using SSL/TLS or SSH)

Calculation ・Moving average 99 max. ・Hold [Current/max./min./max. fluctuation range] ・Zero shift
HT-4801
Power supply ・DC9.6-30V ・AC100-240V	Setting ・Front button on main unit ・Special software LINKSHIP ・External setting unit PL-5A

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 [Temperature meter] HT-4801 Digital panel meter, Signal converter, Indicating alarm meter

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

Usage example *The figure below includes optional functions

Customization - built into box, multi-CH, etc.

Customization Examples [Available for Purchase]

Built into box

Backside

Multi CH in a box

Multi CH with display

HDMI output + display software

Rack Mounted

Output variety 1ms update

CAN [Option]

RS-485, Ethernet (LAN) [Option]

16bit analog [Option]

Alarm [Option]

USB Type-C [Standard]

Price

Easy setup, measurement and installation For ease of use on site

Front operation. Setting and measuring

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

CSV logging

Compare and match set value lists

PC save and copy of set values

Prevention of misoperation

Quickly set up multiple units

USB Type-C connector standard：For configuration and logging

Setup unit without LINKSHIP or PC required: [sold separately]

Power supply: 9.6 to 30VDC / 100 to 240VAC [Select a model]

Isolation

Applications

Incorporation into burn-in test equipment

Thermocouple to CAN conversion

For Infrared Temperature Sensors, Multi-CH Thermometer

Wind Tunnel Testing / vehicles, motorcycles, architectural and civil engineering structures, etc.

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 [Temperature meter] HT-4801
Digital panel meter, Signal converter, Indicating alarm meter

Usage example　*The figure below includes optional functions

Customization Examples　[Available for Purchase]

RS-485, Ethernet (LAN)　[Option]

16bit analog　[Option]

Alarm　[Option]

USB Type-C　[Standard]

Easy setup, measurement and installation　For ease of use on site

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

Power supply: 9.6 to 30VDC / 100 to 240VAC　[Select a model]

Related Products　