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JAQUET Single Channel Tachometer | T411 | 383Z-05318 | with Display 4-20mA Output

JAQUET T411 single channel tachometer with display (order no. 383Z-05318), frequency measurement range 0.01Hz to 35kHz, isolated signal input with adaptive trigger level adjustment, supports magnetic and digital sensor inputs, analog output 0/4-20mA current signal (12-bit resolution, 0.5% full-scale accuracy), 1 relay output with 2 setpoints and programmable hysteresis, front panel LED display + RS232 configuration interface, 10-30VDC supply, power consumption <4.2W. Order available.

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Product Details

1. Product Overview

The JAQUET single channel tachometer with display T411, order number 383Z-05318 (T411.00, +14V sensor supply version), is a frequency measurement and switching instrument from JAQUET's T400 series (Green Line industrial speed measurement series), specifically designed for speed, frequency, and velocity measurement of industrial rotating machinery, widely used in speed monitoring and protection of steam turbines, gas turbines, water turbines, compressors, pumps, fans, motors, gearboxes, and other rotating equipment.

The T411 is a multifunctional single-channel tachometer integrating frequency measurement, speed display, analog output, and relay switching output. It receives pulse signals from speed sensors (such as magnetic speed sensors, Hall sensors, NAMUR sensors, etc.), performs high-precision frequency measurement and calculation, displays the real-time speed value on the front panel LED display, simultaneously outputs a 0/4-20mA analog current signal proportional to the speed, and can implement over-speed, under-speed, and other switching alarm and protection functions through programmable relay outputs.

This tachometer adopts isolated signal input design with adaptive trigger level adjustment, which can automatically adapt to signal levels of different sensors, providing high noise immunity and ensuring stable and reliable frequency signal measurement in complex industrial electromagnetic environments, with fast response to over-speed conditions. The input frequency range is as wide as 0.01Hz to 35kHz (-3dB), covering the full range of measurement needs from very low speed to high-speed rotating machinery. Input impedance is 46kΩ, input voltage withstands ±36V peak, trigger level low ≤1.6V and high ≥4.5V, compatible with various types of sensor output signals.

For analog output, the T411 provides 0...20mA or 4...20mA current output (selectable via software configuration), with resolution as high as 12-bit (4096 steps), linear error ≤0.1%, and accuracy of 0.5% of full scale. The transfer function supports both normal (rising characteristic) and reverse (falling characteristic) modes, which can be flexibly configured according to application requirements. The analog output can be directly connected to PLC, DCS, recorder, indicator, and other industrial automation equipment for remote transmission and centralized monitoring of speed signals.

For relay output, the T411 is equipped with 1 relay output, providing 2 setpoints (A/B), each with independently programmable action value and reset value (hysteresis), enabling various protection functions such as over-speed alarm, under-speed alarm, speed window monitoring, etc. The relay output can be directly connected to alarm lights, buzzers, shutdown circuits, etc., for safety protection of rotating equipment.

The front panel of this tachometer is equipped with an LED display and status indicators, which can display speed, frequency, setting parameters, and other information in real time, and provides an RS232 communication interface. All operating parameters can be configured and debugged quickly and conveniently through the JAQUET T400 Windows configuration software, including measurement range, sensor parameters, analog output range, relay setpoints, display units, etc. The software also supports device identity query, parameter backup and recovery, and other functions.

Supply voltage range is 10...30V DC, power consumption <4.2W, can be directly powered by industrial standard 24V DC power supply. Built-in +14V DC (T411.00 version) or +5V DC sensor supply output can directly power external speed sensors without additional sensor power supply. It has sensor fault monitoring function (Sensor Monitoring), which outputs a fault alarm when the sensor signal is lost or abnormal, ensuring system safety.

Note: This product T411 is a tachometer/frequency measurement instrument and must be used with an external speed sensor to complete speed measurement. Using the tachometer alone cannot achieve measurement function. For the matching speed sensor model, please Contact via email for confirmation based on application scenario and measurement requirements. Installation and wiring must be performed by professional engineers with electrical operation qualifications, strictly following electrical safety operation procedures.

2. Specifications

表格

Parameter	Value
Brand	JAQUET (Switzerland, now part of TE Connectivity sensing portfolio)
Model	T411
Order No.	T411.00 = 383Z-05318 (+14V sensor supply); T411.03 = Contact via email
Product Type	Single Channel Tachometer with Display / Frequency Measurement and Switching Instrument
Series	T400 series (Green Line industrial speed measurement series)
Functions	Frequency measurement, speed display, analog output, relay switching output
Lowest Measuring Range	0 ... 1,000 Hz
Highest Measuring Range	0 ... 35.00 kHz
Input Frequency Range	0.01 Hz ... 35 kHz (-3dB)
Minimum Measuring Time	Contact via email
Signal Input	Isolated signal input, automatic trigger level adjustment (adaptive trigger)
Input Impedance	46 kΩ
Input Voltage	±36 V peak
Trigger Level	Low ≤1.6V, High ≥4.5V
Supported Sensor Types	Magnetic speed sensors (sine/cosine signals), digital sensors (TTL/HTL/NAMUR square wave pulses)
Sensor Supply (T411.00)	+14 V DC
Sensor Supply (other versions)	+5 V DC, 35mA, short-circuit protected
Analog Output Type	Current output 0...20mA or 4...20mA (software configurable)
Corresponding Voltage Output Model	T412 (0...10V or 2...10V)
Transfer Function	Normal (rising) / Reverse (falling), configurable
Analog Output Resolution	12-bit (4096 steps)
Linearity Error	≤0.1%
Accuracy	0.5% of full scale
Output Open Circuit Voltage	Max. 13 V
Relay Output	1 relay, 2 setpoints (A/B), programmable hysteresis
Relay Contact Rating	Contact via email
Display	Front panel LED display
Status Indication	Status LED
Communication Interface	RS232 (for configuration and debugging)
Configuration Software	T400 Windows Software
Sensor Fault Monitoring	Yes (Sensor Monitoring)
System Alarm	Yes (System Alarm)
Binary Input	Yes (Binary Input)
Supply Voltage	10 ... 30 V DC
Power Consumption	< 4.2 W
Weight	Approx. 210 g (reference, Contact via email to confirm)
Mounting	Contact via email (DIN rail or panel mount)
Connection	Contact via email (screw terminals)
Operating Temperature	Contact via email (reference -20 ... +60°C)
Storage Temperature	Contact via email
Protection Degree	Contact via email
Certifications / Standards	Contact via email
Origin	Contact via email (Switzerland/Europe)
Matching Sensor	Requires external speed sensor (Contact via email for selection)
Minimum Order Quantity	1 unit
HS Code	Contact via email (reference 9032 automatic regulating/controlling instruments or 8543 electrical machines)
Stock Status	Order available
Warranty	12 months

5. Model Explanation

Model: T411

Order No.: T411.00 = 383Z-05318 (+14V sensor supply version)

Product Description: JAQUET T400 series single channel tachometer with display, frequency measurement 0.01Hz-35kHz, isolated signal input with adaptive trigger, 0/4-20mA current analog output, 1 relay output, LED display + RS232 configuration, 10-30VDC supply

T400 Series Overview:

The T400 series is JAQUET's Green Line industrial speed measurement and switching instrument series, including T401, T402, T411, T412, etc.
T401/T411: Current output type (0/4-20mA)
T402/T412: Voltage output type (0/2-10V)
T401/T402: Without display version
T411/T412: With display version (front panel LED display + RS232 interface)
All models support frequency measurement, analog output, relay switching output, configurable via T400 Windows software

T411 Sub-models and Order Numbers (reference):

表格

Sub-model	Order No.	Description
T411.00	383Z-05318	With display, 4-20mA output, +14V sensor supply, 1 relay
T411.03	Contact via email	Other configuration version (sensor supply/output type differences)
T411 S5	Contact via email	Special configuration version

Note: The above sub-models and order numbers are for reference only, specific subject to JAQUET official selection catalog. When the user specifies T411, it defaults to the T411.00 (383Z-05318) standard version. For other configuration versions, please Contact via email for confirmation.

Related Products (ordered separately, Contact via email for confirmation):

JAQUET speed sensors (magnetic DSE/DSD series, Hall DSH series, etc.)
JAQUET T412 (voltage output tachometer with display, 0/2-10V output)
JAQUET T401/T402 (without display tachometers)
JAQUET T400 Windows configuration software
RS232 configuration cable
Mounting brackets / DIN rail
Terminal blocks / terminal strips

Official Documentation Reference:

JAQUET T411/T412 Operating Instructions (Document No. 119047 Rev 003, published by TE Connectivity)
JAQUET Green Line industrial speed sensors product manual
JAQUET T400 series universal tachometer solution manual
JAQUET T400 Windows software user guide

6. Why Choose Us

Professional Procurement, Genuine JAQUET Quality Guaranteed — All JAQUET tachometers and speed sensors obtained through professional procurement channels, ensuring genuine JAQUET original products, with product identification, factory inspection certificates, and technical documentation, 12-month quality warranty. Pre-shipment appearance inspection, model confirmation, order number verification, power-on test, and packaging check performed.
Worldwide Delivery, Professional Industrial Electronics Logistics — DHL/FedEx/UPS international courier, global delivery available. Tachometers and other precision industrial electronic devices use shock-proof moisture-proof anti-static professional packaging, ensuring safe transport. Expedited logistics and customs clearance available, delivery to 200+ countries, meeting urgent project and maintenance needs.
Professional Technical Support, Speed Measurement Full-process Service — Tachometer selection consultation (confirming measurement range, sensor type, output type, supply voltage, mounting method, protection function requirements), installation guidance (wiring specifications, sensor installation gap adjustment, shield grounding guidance, relay output wiring), parameter commissioning (T400 software configuration, measurement range setting, analog output range configuration, relay setpoint and hysteresis setting, display unit configuration, sensor parameter calibration), fault analysis (alarm code troubleshooting, sensor signal quality diagnosis, cable fault detection, analog output abnormality analysis, relay action testing, spare parts replacement guidance), and spare parts list review, helping users correctly select, install and maintain.
Flexible Procurement, Project Bulk and Spare Parts Framework Agreements — Single unit and bulk project orders, tiered discounts. Complete rotating machinery monitoring package solutions available (tachometer + speed sensor + connection cable + mounting bracket + configuration software + relay combination) and annual spare parts framework agreements, helping users optimize procurement cost, ensure spare parts supply, minimize downtime risk. Customized quotations and long-term cooperation solutions available for power, petrochemical, metallurgy, water treatment, marine, rail transit and other industry users.
Pre-shipment Verification, Test Report Available — Appearance, packaging, model, order number checks before shipment; tachometer test report available if necessary (power-on test, frequency input test, analog output accuracy test, relay action test, display function test, RS232 communication test, appearance inspection, accessory inventory), ensuring delivered product in good condition and parameters qualified. For urgent project needs (equipment fault repair, production line emergency repair, project commissioning), priority inventory coordination and expedited shipping available.

7. Frequently Asked Questions (FAQ)

Q1: What is JAQUET T411? What are the main parameters?

A: JAQUET T411 is a single channel tachometer with display manufactured by JAQUET (Switzerland), order number 383Z-05318 (T411.00 version), belonging to the T400 series Green Line industrial speed measurement instruments, used for speed, frequency, and velocity measurement and protection of industrial rotating machinery.

Core parameters: Brand JAQUET, model T411, order no. T411.00 = 383Z-05318 (+14V sensor supply), product type Single Channel Tachometer with Display / Frequency Measurement and Switching Instrument, series T400 (Green Line), measurement range 0.01Hz to 35kHz (-3dB), lowest range 0-1000Hz, highest range 0-35kHz, signal input isolated input with adaptive trigger level adjustment, input impedance 46kΩ, input voltage ±36V peak, supported sensors magnetic speed sensors and digital sensors (TTL/HTL/NAMUR), sensor supply +14V DC (T411.00) or +5V DC, analog output 0/4-20mA current output, 12-bit resolution, linearity error ≤0.1%, accuracy 0.5% full scale, relay output 1 relay with 2 setpoints (A/B) programmable hysteresis, display front panel LED, communication RS232 with T400 Windows configuration software, supply 10-30V DC, power consumption <4.2W, weight approx. 210g, sensor fault monitoring yes, system alarm yes.

Main applications: Widely used in speed monitoring, over-speed protection, under-speed alarm, speed signal remote transmission, etc. for steam turbines, gas turbines, water turbines, compressors, pumps, fans, motors, gearboxes, centrifuges, crushers, and other rotating equipment. It is one of the core instruments in rotating machinery protection systems for power, petrochemical, metallurgy, water treatment, marine, rail transit, and other industries.

Note: This product is a tachometer/frequency measurement instrument and must be used with an external speed sensor to complete speed measurement. Using the tachometer alone cannot achieve measurement function. For the matching speed sensor, please select based on application scenario and measurement requirements.

Q2: What is the difference between T411, T412, T401, and T402? How to choose?

A: The JAQUET T400 series includes four main models, differing mainly in whether they have a display and the analog output type.

Model comparison:

表格

Model	Display	Analog Output Type	Typical Order No.
T401	No	Current output 0/4-20mA	383Z-05307
T402	No	Voltage output 0/2-10V	383Z-05308
T411	Yes (LED + RS232)	Current output 0/4-20mA	383Z-05318
T412	Yes (LED + RS232)	Voltage output 0/2-10V	383Z-05319

Common features:

All belong to T400 series Green Line industrial tachometers
All support frequency measurement (0.01Hz-35kHz), analog output, relay switching output
All use isolated signal input, adaptive trigger level adjustment
All configurable via T400 Windows software
All supply 10-30V DC
All have sensor fault monitoring and system alarm functions

How to choose:

Need for local display:
- Need to view speed value directly at the equipment site → select T411 (current output) or T412 (voltage output), with LED display
- No need for local display, speed signal transmitted remotely to control room → select T401 (current output) or T402 (voltage output), without display version, lower cost
Analog output type:
- Need 4-20mA current signal output (suitable for long-distance transmission, strong anti-interference, standard signal for most PLC/DCS analog input modules) → select T411 or T401
- Need 0-10V or 2-10V voltage signal output (suitable for short-distance transmission, some older systems or specific controller interfaces) → select T412 or T402
Communication configuration needs:
- T411/T412 with display versions have RS232 interface on the front panel, can be directly connected to a computer for configuration
- For T401/T402 without display versions, please refer to the official manual for configuration method (Contact via email to confirm)
Cost budget:
- Limited budget and no need for local display → T401/T402
- Need local display and convenient configuration → T411/T412

This product T411 is the version with display + current output, one of the most fully functional and widely used models in the T400 series. If you have selection questions, please provide application scenario, measurement range, sensor type, control system interface type, whether local display is needed, etc., and we can assist in confirming the most suitable model.

Q3: Which speed sensors can T411 be used with? How to wire?

A: The T411 tachometer supports multiple types of speed sensor inputs, as follows:

Supported sensor types:

Magnetic / Variable Reluctance Speed Sensors:
- Output signal: Sine/cosine analog signal
- Typical models: JAQUET DSE series, DSD series, etc.
- Features: Passive sensor, no external power needed, robust construction, high temperature resistant, suitable for harsh environments
- Wiring: Sensor two wires connect to T411 signal input terminals (note shield single-end grounded)
Hall Effect Speed Sensors:
- Output signal: Square wave pulse signal (TTL/HTL level)
- Typical models: JAQUET DSH series, etc.
- Features: Active sensor, requires external power supply (usually +5V or +12V or +24V), good frequency response, can measure zero speed
- Wiring: Sensor power supply wire connects to T411 sensor supply output (+14V or +5V, according to sensor requirements), signal wire connects to signal input, ground wire common ground
NAMUR Sensors:
- Output signal: NAMUR standard square wave signal (8.2V supply, current variation type)
- Features: Intrinsically safe sensor, suitable for explosion-proof areas
- Wiring: Requires use with safety barrier (Contact via email for specific wiring solution)
Other Digital Sensors:
- Encoders, proximity switches, etc. with TTL/HTL level square wave pulse output

T411 input characteristics:

Input impedance: 46kΩ
Input voltage: ±36V peak
Trigger level: Low ≤1.6V, High ≥4.5V
Adaptive trigger: Automatically adjusts trigger level to adapt to different signal amplitudes
Isolated input: Signal input electrically isolated from internal circuits

Wiring instructions (reference):

Magnetic sensor wiring:

Sensor signal wire (+) → T411 signal input positive terminal
Sensor signal wire (-) → T411 signal input negative terminal
Shield → Single-end grounded (usually grounded at the tachometer side)

Hall sensor wiring:

Sensor power supply (+) → T411 sensor supply output (+14V or +5V, according to sensor requirements)
Sensor ground (GND) → T411 power ground / signal ground
Sensor signal output → T411 signal input positive terminal
Sensor signal ground → T411 signal input negative terminal (if single-ended output then ground)

Analog output wiring:

4-20mA output positive → PLC/DCS analog input module positive terminal
4-20mA output negative → PLC/DCS analog input module negative terminal
Note: Current output loop must be in series, load resistance not exceeding allowable value (open circuit voltage max 13V)

Relay output wiring:

Relay common terminal (COM) → Alarm power supply or shutdown circuit input
Relay normally open (NO) → Alarm light / buzzer / shutdown circuit
Relay normally closed (NC) → Use as needed
Note: Relay contact rating is limited; when driving large loads, use through an intermediate relay

Wiring precautions:

Before wiring, ensure the power supply is completely off to prevent electric shock and equipment damage.
Sensor signal wires should use shielded twisted-pair cable, shield single-end grounded, avoid ground loops.
Sensor signal wires and power wires (such as motor wires, VFD output wires) should be routed separately, avoiding parallel routing, to reduce electromagnetic interference.
Analog output wires should also use shielded cable, pay attention to voltage drop during long-distance transmission.
Sensor installation gap must be adjusted strictly according to the sensor manual; magnetic sensors usually require 0.5-1.5mm gap from gear tooth top.
For specific wiring diagrams and terminal definitions, please refer to the JAQUET T411/T412 official operating instructions.

Q4: How to configure the relay output of T411? What protection functions can it achieve?

A: The T411 is equipped with 1 relay output, providing 2 independently programmable setpoints (A and B), each with independently configurable action value and reset value (hysteresis) via T400 Windows software, enabling various speed protection functions.

Relay output basic parameters:

Number of relays: 1
Number of setpoints: 2 (A/B)
Each setpoint independently configurable: action value (setpoint), reset value (hysteresis/reset point)
Action logic: Configurable as over-speed action or under-speed action
Hysteresis function: Programmable, prevents frequent switching (chatter) near the setpoint

Achievable protection functions:

Over-speed Protection:
- Set setpoint A as over-speed alarm value (e.g. 110% of rated speed)
- When speed exceeds setpoint A, relay activates, outputting over-speed alarm signal
- Can be connected to alarm light, buzzer, or shutdown circuit
- Reset value (hysteresis) set below action value by a certain value (e.g. 5%), relay resets when speed drops below reset value
Under-speed Protection:
- Set setpoint A as under-speed alarm value (e.g. 80% of rated speed)
- When speed drops below setpoint A, relay activates, outputting under-speed alarm signal
- Suitable for belt slip, pump cavitation, fan stall, and other fault detection
- Reset value set above action value by a certain value, relay resets when speed rises above reset value
Speed Window Monitoring:
- Setpoint A set as upper limit, setpoint B set as lower limit
- Normal state when speed is between A and B; relay activates alarm when exceeding upper limit or dropping below lower limit
- Suitable for processes requiring speed to be stable within a specific range
Zero Speed Detection:
- Set setpoint to very low speed value (e.g. 1Hz or a few RPM)
- When equipment stops or speed drops below setpoint, relay activates, outputting zero speed signal
- Can be used for equipment stop confirmation, safety interlock (e.g. ensuring equipment completely stopped before opening safety door)
Speed Pulse / Switch Output:
- Set relay to activate at a specific speed value, as a switch signal output indicating speed reaching setpoint
- Can be used for starting/stopping subsequent equipment, process switching, etc.

Configuration method:

Connect T411 to computer via RS232 cable
Open T400 Windows configuration software
Enter relay configuration interface
Set action values and reset values for setpoint A and setpoint B
Set action logic for each setpoint (over-speed/under-speed)
Set relay state on sensor fault (fail-safe/fail-danger)
Download configuration to T411
Disconnect RS232 cable, configuration complete

Configuration precautions:

Relay setpoints should be reasonably set according to equipment rated speed and process requirements, avoiding false action or refusal to act.
Hysteresis value should be set reasonably; too small may cause frequent chatter near the setpoint, too large may cause alarm delay.
For safety protection functions (such as over-speed shutdown), fail-safe relay logic is recommended (relay activates to trigger protection on sensor fault).
Relay contact rating is limited; when driving high-current loads (such as motors, solenoid valves), use through an intermediate relay or contactor.
For specific configuration steps and parameter ranges, please refer to the T400 Windows software user guide and T411 official operating instructions.

Q5: In stock? Lead time? Price?

A: Currently Order Available. Specific stock of JAQUET tachometer products fluctuates with market.

Lead time: Standard 4-8 weeks (JAQUET industrial tachometers are customized instruments, some common configurations may be in stock, specific subject to formal quotation).
Price: Subject to formal quotation, depends on specific configuration (sub-model, sensor supply, output type, certification requirements), quantity, supply channel, whether includes technical service and on-site commissioning support, etc. Bulk procurement enjoys tiered discounts.
Package solutions: Complete speed measurement package solutions available (tachometer + speed sensor + connection cable + mounting bracket + configuration software + RS232 cable combination), combined procurement price more favorable. T411 requires external speed sensor, it is recommended to purchase matching sensor and cable at the same time.
Expedited service: For urgent needs (equipment fault repair, production line emergency repair, project commissioning), we can try to coordinate stock or expedited ordering, please contact sales team.
Please indicate: required quantity, desired delivery time and destination, specific configuration requirements (sub-model/sensor supply/output type), whether matching speed sensor and cable needed, whether configuration software and RS232 cable needed when inquiring; we will coordinate fastest delivery and optimal price.

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