Thermocouple meter HT-4801

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

Select a TC type and measure the temperature.
The electromotive force corresponding to the temperature difference between the tip of the TC and the main body of the instrument
is measured as a voltage and converted to a temperature.


Measurement -270°C to +1820°C
Measurement resolution 0.1℃/1℃

Rate setting between two points Linear correction formula

Thermocouples

Customization is possible, built into box, multi-CH, etc.     Go to custumize page

Functional changes  Built into box [Below are some examples of results] Compact Multi CH, built into the box
Inputs, outputs, operations, etc.
- Change input power supply
- Match output voltage and communication specifications to equipment
Please consult with us about the boxed items you would like. 

- Select and combine only what you need
- Convenient, easy, and low cost



Ex.
Thermocouple 4ch + voltage 2ch type [front/rear] /
HDMI output 20ch type

Output variety 2ms update
CAN output [Option]
3-wire wiring greatly reduces wiring compared to BCD
Powerful error detection system for improved noise immunity and safety

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

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

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

Easy setup, measurement and installation Consideration for ease of use on site

Front operation. Setting and measuring

(A) Operation indicator LED
(B) Front sheet button
- [In program mode] MODE, digit selection, numeric setting, ENTER
- [In measurement mode] Span shift, Zero shift
- Key lock, etc.

Blue/pink type [Option]
*Designs are subject to change.

Mounting hooks [Left and right] For fixing the main unit
Smart configuration and logging
Setting management, report printing, and CSV logging with dedicated software LINKSHIP [free of charge]  Go to LINKSHIP page

CSV logging Compare and match set value lists PC save and copy of set values Prevention of misoperation Quickly set up multiple units

Time-specified logging, such as 600 seconds, is also available. Custom logger software is also available. Multiple lists of set values can be compared and collated. It prevents errors in note-taking and manual entry, and reduces management effort and costs. Settings and confirmations can be made on the PC screen, preventing misoperation of the main unit's buttons. Even multiple units can be easily configured by simply writing the configuration data.

USB Type-C connector standard Setup unit without LINKSHIP or PC required:
Program Loader PL-5A
  [sold separately]

PL-5A Product Page
*Setting only / data logging and power supply not available
Power supply: 12 to 30VDC / 100 to 240VAC [Select a model]
Isolation 
Electrical isolation between power supply / thermocouple input / other input/output

Applications 

Integration into burn-in test equipment

Temperature
Pressure
Electric Current
Constant-temperature
oven
Temperature
Voltage
Current
Resistance
Frequency
HT
PSV
PSA
RR
SPD

CAN
USB
Analog output
RS-485
→→→

PC
Oscilloscopes
Data Loggers
Signal Input
Characteristics
Measurement

Good/Fail judgment
Alarm output
→→→

PLC

Fluid temperature difference measurement for flow error compensation
Temperature
HT-4801

CAN
USB
Analog output
RS-485
→→→

PLCs, loggers, PCs, etc.



Flow rate
Speeedmeter/Counter
[Switchable]
Flow rate
Speeedmeter/Counter
[Switchable]
Temperature
HT-4801

Temperature (thermocouple) - CAN conversion etc.

Specifications 

  Name
Model
Thermocouple meter
HT-4801
Input  Number of input points
1 point
  Measuring range Thermocouple types
K
J
R
E
T
B
N
S
Measuring range A [0.1°C]
-170.0 to 1370.0 °C
-200.0 to 1100.0 °C
100.0 to 1760.0 °C
-140.0 to 1000.0 °C
-240.0 to 400.0 °C
480.0 to 1820.0 °C
580.0 to 940.0 °C
450.0 to 1760.0 °C
Measuring range B [1°C]
-250 to 1370 °C
-200 to 1100 °C
-50 to 1760 °C
-260 to 1000 °C
-270 to 400 °C
100 to 1820 °C
-220 to 1300 °C
50 to 1760 °C
Accuracy
(±0.5% FS)
(±0.5% FS)
(±0.5% FS)
(±0.5% FS)
(±0.5% FS)
(±0.5% FS)
(±0.5% FS)
(±0.5% FS)
 


Measurement resolution
Burnout
Calibration
*Accuracy in parentheses ( ) 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°C
Measurement range A: 0.1°C /Measurement range B: 1°C
display "bAhn" in 7seg characters
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
Hold function

Hold input
Additional control input
Setting value memory
1 to 99
Set from current value, max. value, min. value, max. fluctuation range, zero shift (hold / external control input)
Zero shift function, set the current input level as the zero reference value for measurement
ON when shorted to 1-point GND, OFF when open (hold function is set)
ON when shorted to 2-point GND, OFF when open (hold function assigned and set for each input)
Nonvolatile memory (EEPROM)
Display Display Color
Indicator (Numerical Display)

Decimal point position
Display update time
Display moving average times
Display accuracy
Indicator (Round LEDs)
[Standard] HT-4801 Red LED / [Option] HT-4801-G Green LED
6-digit, 7-segment LED Character height 14.2mm / Display range:-199999 to 999999
Over indication: OL / Zero indication: Leading zero suppress
Semi-fixed Decimal point position is set in program mode. [0] ******,  [1] *****.* to [4] **.****
0.3 sec (settable from 0.1 to 9.9 sec)
5ppm ± 1 digit
1 time (settable from 1 to 9 times)
[IND ]
[HI] Lights up when HIGH comparator output is ON (option)
[LOW] Lights up when LOW comparator output is ON (option)
USB
communication
Communication specification
Communication function
Output update time
USB2.0 (Serial port communication by USB virtual COM 230.4kbps)
Writing/reading of set values/continuous output of measured values
2 to 9999ms, settable in 2ms increments
General
Information
Operating temp./humidity
Power supply voltage

Power consumption
Isolation
Withstand voltage
Weight
-10°C to +50°C / 35 to 85%RH (non-condensing)
HT-4801-AF: AC100-240V (Maximum rated AC85-264V) 50/60Hz
HT-4801-DF: 12-30V DC (Maximum rated 9-36V DC) with reverse connection protection
3W or less
Power Supply/ Thermocouple input /Other Input/output
Between each terminal of the above isolations: 500V DC between each terminal for 1 minute.
Approx. 340g
CAN Option Communication specifications
Communication function
Setting item
Output update time
CAN2.0B 10 k / 20 k / 50 k / 100 k / 250 k / 500 k / 1M bps, [Format] INTEL/MOTOROLA, [Frame] 11bit/29bit
Writing/reading of set values/continuous output of measured values
CAN transmit ID, CAN receive ID
2 to 9999 ms (settable in 2 ms increments)
RS-485
communication
option
Number of connected units
Communication format
Communication method
Communication standard
Communication speed
Data format
Communication code
Communication function

32 units (max.)
2-wire multi-drop serial communication
Asynchronous
RS-485
9,600 /19,200 /38,400bps Set in program mode
Start bit: 1 bit / Stop bit: 1 bit / Data length: 8 bits / Parity bit: None
ASCII
Writing/reading set values/measurement value output (response to request command)
Modbus RTU support is available upon request.
Analog
output option
Output signals
D/A conversion method
Output resolution
Load resistance
Output accuracy
Temperature fluctuation
Output scaling
Output update time
Response time after calculation
[E1] 0 to 10 V, [E5] 0 to 5 V, [R1] ±10 V, [R5] ±5 V, [I1] 4 to 20 mA    [Select a model]
DAC conversion method
16bit (50,000 or more)
[Voltage output] 4.7kΩ or more / [Current output] 300Ω or less
[Voltage output] ±0.1% of FS @ 23°C / [Current output] ±0.1% of FS @ 23°C
±200ppm/℃ or less
Arbitrary scaling is possible by full scale and zero scale settings
2 to 9999ms settable in 2ms increments
1 ms or less, 0 - 90% response
Alarm
[Comparator]
output option
Setting method
Number of outputs
Output form

Output load voltage
Output logic



Update time
Set in program mode
2 points
Isolated non-contact output (photo-MOS relay) No polarity.
When comparator operating condition is ON, resistance between COMP and COM: 50 Ω or less

Peak AC/DC280V 100mA (resistive load) / ON resistance 50Ω or less
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 inside the range

Depends on analog output update time setting. Response time 2ms (max)

To the page of Thermometers list

To the page top