The core components of the QTQ900 digital pressure sensor/transmitter use the metal sputtering film core independently developed and produced by our company. The electronic components of the product have been strictly tested, with stable performance, high measurement accuracy, strong anti-interference ability, and appearance. The fully enclosed stainless steel structure can meet the requirements of harsh working conditions such as moisture-proof, explosion-proof, anti-corrosion, and dust-proof. The sensor output signal is standard CA Nbus or RS485 data with strong interchangeability. The product has the functions of data collection, data processing, online calibration, etc. The intelligent digital architecture can better help you to measure and control the equipment, reserve a secondary development interface for users, and allow users to re-customize new sensors.

Core capacity advantage

With an annual production capacity of 6 million cores, it has completely broken the pattern of foreign monopoly of the cores.

Packaging capacity advantage

The first packaging line with an annual output of 2 million pressure sensors was successfully put into production. Follow-up will continue to expand production.

Quality Assurance

Qitai has a mass-produced metal-based pressure-sensitive chip production line, a 100-level purification workshop, a fully automatic binding machine, and fully complies with the ISO9001 quality management system to ensure product quality and consistency. The company is well aware of the importance of quality in product applications, and for this reason we have been doing everything possible to improve product quality. For engineers, the worst thing is to stop work because of quality problems. Qitai attaches great importance to this issue and makes unremitting efforts for it. We promise to provide you with the greatest quality assurance. Qitai uses sputtering film technology, complete products and 100% final inspection quality assurance measures to ensure that customers will no longer be Worry about quality problems.

strong and sturdy

The QTQ900 digital pressure sensor/transmitter adopts a compact design of fully welded stainless steel, which can effectively protect the sensor under harsh working conditions. The electrical connector has a protection level of IP67 and a solid internal structure design to ensure that the sensor can work normally in a high vibration environment.

product features

◆High-performance pressure sensitive components

◆Can work in AC or DC

◆The measured value of the sensor is digital output, and the sensor can communicate in both directions

◆Wide power supply voltage range, and no need for voltage stabilization

◆Built-in interactive Chinese menu, built-in digital filter

◆The shell is made of stainless steel, which is durable

◆CAN output or RS485 output

◆High stability, strong anti-electromagnetic interference ability

application

◇Unmanned Aircraft Pressure Control System

◇Automobile pressure control system

◇Ship pressure control system

◇Pressure measurement of bridges and buildings

◇Measuring the internal pressure of the engine

◇Industrial Robot

◇Mechanical equipment

◇Low and medium speed pressure process control

Product parameter

Performance parameter

Accuracy	±0.3%FS
Long-term stability	±0.2%FS/year
Zero temperature drift	±0.1%FS/10℃
Full-scale temperature drift	±0.3%FS/10℃
Response time	≤1 millisecond
Durability	10 ⁷ pressure cycles

Range, overload pressure and failure pressure

Range MPa	2.5-6	10-60	70	100
Overload pressure	2 times	2 times	1.5 times
Breaking pressure	20 times	10 times and ≤400MPa	≤400MPa

Note: higher overload pressure and failure pressure can be customized

Electrical parameters

Supply voltage	AC 7-24V or DC 9-28V
Supply current	≤30mA
Output	CAN、RS485
Insulation resistance	≥1000MΩ/500VDC

Physical properties

Sensitive component material	17-4PH
shell	316 stainless steel
Pressure port	See back pressure port
Electrical connections	See the electrical interface
Protection level	IP67

Environmental parameters

Medium temperature range	-40～+95℃
Ambient temperature range	-40～+95℃
Storage temperature range	-40～+95℃, dry, clean and well-ventilated warehouse without corrosive medium
vibration	Vibration response<0.05%FS/g, 30g peak, 10HZ-2KHz, 12mm bidirectional peak
Impact resistance	10g, half sine pulse 1ms (three-way)
EMC- electromagnetic field radiation immunity	GB/T 17626.3-2016
EMC-electrostatic discharge immunity	GB/T 17626.2-2018

Wiring

Pressure port

Electrical Interface

CAN bus output type

Serial number	Logo	illustrate	MRD level	A、B、C、D、M、M1级
1	V +	External power supply	V +	V +
2	V-	External power supply	V-	V-
3	CAN-H	Communication line	CAN-H	CAN-H
4	CAN-L	Communication line	CAN-L	CAN-L
5/a	Internally	Programming line	Internally	Without lead wire
6/b	Internal R	Programming line	Internal R	Without lead wire
7/c	Internal Vcc	Programming line	Internal Vcc	Without lead wire
8/d	Internal PRG	Programming line	Internal PRG	Without lead wire

Rs485 bus output type

Serial number	Logo	illustrate	MRD level	A、B、C、D、M、M1级
1	V +	External power supply	V +	V +
2	V-	External power supply	V-	V-
3	RS485-A	Communication line	RS485-A	RS485-A
4	RS485-B	Communication line	RS485-B	RS485-B
5/a	Internally	Programming line	Internally	Without lead wire
6/b	Internal R	Programming line	Internal R	Without lead wire
7/c	Internal Vcc	Programming line	Internal Vcc	Without lead wire
8/d	Internal PRG	Programming line	Internal PRG	Without lead wire

Rs485 bus output type

Sampling rate	Applicable level	Remark
1 time/sec	A、B、C、D、M、M1、MRD
2 times/sec	A、B、C、D、M、M1、MRD
16 times/sec	A、B、C、D、MRD	custom made
32 times/sec	A、B、C、MRD	custom made

Ordering guide

model	Range	Pressure port	Output	Electrical Interface	Options
QTQ900	255 2.5 MPa	G2 G1/4 -19	V RS485	11 Aviation connector
QTQ900	046 4 MPa	M6 M20X1.5	J CAN protocol digital output	02 Direct outlet
	066 6 MPa	M3 M12X1.5		09 Waterproof connector for car
	106 10 MPa	G1 G1 / 8		10 Programming interface
	166 16 MPa	G4 G1 / 2
	256 25 MPa	M4 M14X1.5
	406 40 MPa	M7 M22X1.5
	606 60 MPa
	706 70 MPa
	107 100 MPa

Secondary development license

level	illustrate	Remark
A	Unlimited
B	Unlimited
C	Unlimited
D	Unlimited
M	Power-on license	Special equipment is required to activate the license
M1	Power-on license	Special equipment is required to activate the license
BILLION	Network online license	License software needs to be installed in the development computer

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QTQ900 digital pressure sensor/transmitter

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