Frequently Asked Questions

What is the accuracy of the DPG100 Digital Pressure Gauge?

The DPG100 Digital Pressure Gauge offers three accuracy classes: 0.02% F.S, 0.05% F.S, and 0.1% F.S. The 0.02% F.S accuracy is available for pressure ranges from (-1~0) bar up to (0~700) bar. For ranges above 1000 bar, the available accuracy classes are 0.05% F.S and 0.1% F.S (Sealed Gauge).

What pressure range does the DPG100 cover?

The DPG100 covers pressure ranges from -1 bar to 2500 bar across 24 models (DPG100-1 through DPG100-24). Common ranges include 0~1 bar, 0~10 bar, 0~100 bar, 0~600 bar, 0~1000 bar, and 0~2500 bar. Custom pressure ranges are also available upon request.

What power supply does the DPG100 use and how long does the battery last?

The DPG100 is powered by three AA alkaline batteries. Depending on the measurement speed setting, battery life ranges from 1 year (at 1 reading/second) up to 8 years (at 1 reading/10 seconds). The measurement speed is adjustable: 1 reading/1s, 1 reading/2s, 1 reading/5s, or 1 reading/10s.

What industries is the DPG100 suitable for?

The DPG100 is widely used in oil and gas, power industry, metrology bodies, and other fields requiring precision pressure measurement. It is suitable for precision pressure measurement, field gauge calibration, and calibration of other pressure instruments.

What are the key features of the DPG100?

Key features include: 6-digit display with white backlight, rugged aluminum housing, 316 stainless steel wetted parts, auto peak recording, overpressure warning (displays "Fail" above 110% F.S), RS232 communication, selectable pressure units (mmH2O, mmHg, Pa, kPa, MPa, psi, bar, mbar, kgf/cm2), and operating temperature range of -20~70°C with 0~50°C temperature compensation.

What is the difference between DPG100 and DPG280 Digital Pressure Gauges?

The DPG100 offers higher accuracy (up to 0.02% F.S) and a wider pressure range (up to 2500 bar) with a 6-digit backlit display and rugged aluminum housing. The DPG280 is a more economical portable test gauge with accuracy of 0.2% F.S or 0.4% F.S, pressure range up to 1000 bar, a 4-digit large LCD display, and stainless steel housing. The DPG100 is ideal for high-precision laboratory and field calibration, while the DPG280 is suited for general industrial pressure testing.

What is the accuracy and pressure range of the DPG280?

The DPG280 offers accuracy of 0.4% F.S and 0.2% F.S, with a pressure range up to 1000 bar. It features a 4-digit large LCD display with backlight, stainless steel housing, and dry-battery power that lasts more than 12 months.

Does the DPG280 support multiple pressure units?

Yes, the DPG280 supports multiple pressure units including MPa, bar, kgf, mH2O, PSI, kPa, mmHg, torr, mbar, cmH2O, and Pa. It also features zero clearing, maximum/minimum function, pressure percentage display, and low voltage alarm.

What connection types are available on the DPG280?

The DPG280 offers 1/4 NPT and 1/4 BSP connections (or custom connections according to client requirements). It uses dry batteries with a low-power design that keeps it working for more than 12 months.

What is the DPC100 Pressure Calibrator used for?

The DPC100 Intelligent Pressure Calibrator is a single-range, full-scale pressure measurement instrument with high-accuracy DC current and voltage measurement plus 24VDC power output. It is used to calibrate ordinary and precision pressure gauges, pressure transmitters, pressure regulating valves, and pressure switches. It also supports real-time pressure measurement.

What accuracy does the DPC100 provide?

The DPC100 provides pressure measurement accuracy of 0.02% F.S, 0.025% F.S, and 0.05% F.S, with pressure ranges up to 2,500 bar. It also measures DC current (mA) or voltage (V) with 0.02% RD + 0.003% F.S accuracy, and can power transmitters during testing using the 24V loop supply.

Can the DPC100 test pressure switches?

Yes, the DPC100 supports pressure switch testing. It also features selectable engineering units (Pa, kPa, MPa, psi, bar, mbar, mmH2O, mmHg), advanced temperature compensation, a large easy-to-read 6-digit backlit display, two-point correction, rechargeable battery or AC adapter, and optional NIM-traceable calibration certificate.

What is the DPG103 Micro Pressure Gauge designed for?

The DPG103 Micro Pressure Gauge is designed for micro-pressure precision measurement. It is suitable for field and laboratory use, and can calibrate pointer micro pressure gauges, precision pressure gauges, and general pressure gauges. It can completely replace traditional pointer micro pressure gauges.

How long can the DPG103 operate on battery power?

The DPG103 uses micro power consumption technology and can operate continuously for more than 10,000 hours without sleep. It also features an auto zero function, automatic peak recording, and adjustable measurement speed (fastest 3 readings/second, slowest 1 reading per 10 seconds).

What pressure units does the DPG103 support?

The DPG103 supports mmH2O, mmHg, inH2O, Pa, kPa, MPa, psi, bar, and mbar pressure units, making it versatile for various micro-pressure measurement applications.

What is the KT30 Pneumatic Comparator used for?

The KT30 Pneumatic Comparator is a portable pressure generator designed to generate pressure from vacuum to 100 bar. It is used to calibrate pressure instruments in field and laboratory settings across power, chemical, petrol, metallurgy, metering, and military industries.

What is the pressure adjustment resolution of the KT30?

The KT30 offers a fine adjustment resolution of 0.1 mbar (10 Pa), thanks to its F-adjust valve. It uses air as the working medium, features a built-in filter to protect the pump, and has a lever lead screw design for labor-saving operation. The output interface connection is M20x1.5 Female.

How much does the KT30 weigh and what are its dimensions?

The KT30 weighs 4.3 kg with dimensions of 370mm (L) x 210mm (W) x 160mm (H). It is constructed with a stainless steel/aluminum body and Buna-N seals, making it portable and durable for field use.

What is the maximum pressure of the KT50 Hand Operated Comparator?

The KT50 Hydraulic Comparator can generate pressure up to 700 bar. It uses 25# transformer oil or distilled water (KT50A model) as the working medium, with an adjustment resolution of 1 mbar. The screw pump design makes high-pressure operation easy and labor-saving.

What are the key features of the KT50 Comparator?

The KT50 features a compact and lightweight design using stainless steel and lithium alloy, a screw pump for easy high-pressure generation, an F-adjust valve for precise pressure setting, a detachable transparent oil cup for easy cleaning and maintenance, and two standard pressure outputs (M20x1.5 Female) for quick connection without wrenches. It weighs 5.1 kg.

What is the KT100 Hydraulic Comparator and what pressure can it generate?

The KT100 is a bench-top hydraulic pressure comparator designed to generate pressure from vacuum up to 2500 bar. Available models include KT100, KT100A, and KT105. It uses transformer oil as the working medium and features a screw pump design for smooth pressure increase and decrease.

How many instruments can the KT100 calibrate simultaneously?

The KT100 has 3 output ports with quick couplings, allowing it to calibrate 2 pressure instruments at the same time. It features a transparent oil cup for easy cleaning and maintenance, M20x1.5 Female output connections, and weighs 15 kg with dimensions of 520x390x240 mm.

What is the KDS801 Dry Block Calibrator used for?

The KDS801 Dry Block Calibrator is a temperature calibration instrument used for calibrating temperature sensors such as RTDs and thermocouples. It provides reliable high-precision temperature control and is suitable for field and laboratory temperature calibration applications.

What display and interface does the KDS801 feature?

The KDS801 features a 5.7-inch TFT LCD touch screen with 16-bit true color RGB display and full touch operation, making it simple and intuitive to use. It was the first worldwide to offer touch operation in a dry block calibrator. It also includes a USB Device communication interface (optional).

What are the key features of the KDS801?

Key features include: small size and light weight for portability, various insertion tube types to meet different sensor sizes and quantities (customizable), horizontal and vertical temperature field calibration, industry-leading insertion depth, fast cooling, good temperature stability, hot block quick replacement, and protection functions including load short circuit, load switch, and sensor protection. Operating environment: 0~50°C, 0%-90% humidity (non-condensing).

What is the KD Series Hydraulic Dead Weight Tester?

The KD Series Hydraulic Dead Weight Tester is a primary standard and the most accurate reference instrument for pressure calibration. It works on the physical principle of pressure = force/area, where mass pieces on a piston-cylinder system create a precisely defined force. It is used as a primary standard for defining the pressure scale and as a pressure reference for factory and calibration laboratories.

What models and pressure ranges are available in the KD Series?

The KD Series includes 6 models:

What materials are used in the KD Series Dead Weight Tester?

The KD Series uses tungsten carbide for the piston-cylinder system (rod and cylinder). The weights (masses) are made of non-magnetic stainless steel for 0.005%, 0.01%, and 0.02% accuracy classes, and carbon steel for the 0.05% accuracy class. The base is stainless steel. The working medium is mixed oil (transformer oil and kerosene) for pressures below 25 MPa, and sebacate oil for pressures 25 MPa and above.

What is the KT-1825 Multifunction Process Calibrator used for?

The KT-1825 (KT1825) is a multifunction calibration tool designed to calibrate virtually all industrial process parameters. It can measure and output resistance, current, frequency, RTDs, and thermocouples. It is ideal for calibrating process transmitters, sensors, and control systems in industrial automation environments.

What measurement and output functions does the KT-1825 support?

The KT-1825 supports the following functions:

It also features manual stepping, auto stepping, and ramp output functions.

What are the key features and specifications of the KT-1825?

The KT-1825 offers 0.05% reading accuracy, split-screen transmitter calibration, automatic cold junction compensation for thermocouples, IP67 waterproof rating, 220V automatic terminal protection, and RS232 PC communication. It weighs 0.65 kg with dimensions of 200×96×47 mm, powered by 6 R03 rechargeable batteries or an AC adapter. Operating conditions: -20~60°C storage temperature, 0~90%RH humidity (non-condensing).

What is the KT-S828E Digital Pressure Switch?

The KT-S828E is a smart digital pressure switch that integrates pressure measurement, display, and control in one unit. It can set two groups of normally open/normally closed alarm points, enabling dual high/low pressure control. It features one-key zero clearing and three pressure unit switching, with a 304 stainless steel housing and connector for durability in harsh environments.

What pressure ranges and accuracy does the KT-S828E support?

The KT-S828E supports:

• Conventional ranges: 0-0.2 MPa up to 0-200 MPa
• Micro-pressure ranges: 0-5 kPa to 0-100 kPa
• Negative pressure: -100 ~ 0 kPa (-0.1 ~ 0 MPa)

Accuracy is ±0.5% FS. Overpressure capacity is 150% for ranges ≥10 MPa and 200% for ranges <10 MPa. It samples at 5 times per second.

What applications and connection options does the KT-S828E support?

The KT-S828E is widely used in mechanical automation, engineering machinery, medical equipment, water and wastewater treatment, agricultural machinery, industrial field testing, and hydraulic/pneumatic systems. It offers multiple connection options (M20×1.5, G1/4, G1/2, NPT1/2, NPT1/4) and power supply options (24VDC, 220VAC, 380VAC). The dual relay output supports both normally open and normally closed configurations with independently settable hysteresis values, making it versatile as a controller, switch, or digital contact pressure gauge.

What is the KDQ Series Pneumatic Dead Weight Tester?

The KDQ Series Pneumatic Dead Weight Tester is a high-precision pressure reference instrument that uses air or nitrogen as the working medium. It can measure and calibrate gauge pressure, absolute pressure, and vacuum. Based on the principle of pressure = force/area, it uses weights on a piston-cylinder system to create precisely defined pressure. It outperforms hydraulic dead weight testers in durability, sensitivity, repeatability, and accuracy.

What models and pressure ranges are available in the KDQ Series?

The KDQ Series includes 6 models: KDQ-6, KDQ-25, KDQ-40, KDQ-60, KDQ-70, and KDQ-100. Measurement ranges include (-0.1~0.25) MPa (minimum 5 kPa), (-0.1~0.4) MPa, and (-0.1~0.6) MPa. Accuracy classes available are 0.005%, 0.01%, 0.02%, and 0.05% of reading.

What are the key features of the KDQ Series?

The KDQ Series features sensitivity up to 10 mg, a new structure measurement system that can measure both positive and negative pressure by switching the pressure vacuum cap and reversing valve, a filtering device to prevent dust entry, and a vacuum/positive pressure reversing valve for connecting vacuum pumps and nitrogen cylinders. The base is made of aluminum alloy, weights are non-magnetic stainless steel, and the pressure control unit (PCU) uses tungsten carbide. The working medium is pure nitrogen.

What is the KDS611 Pressure Transmitter?

The KDS611 is a digital pressure transmitter widely used in various industrial applications. It adopts advanced diaphragm isolation technology, integrated chip design, and wide voltage power supply. It features compact structure, easy installation, strong anti-interference ability, lightning protection, and current/voltage limiting with reverse polarity protection (current output type only). The wetted parts are made of 316L stainless steel.

What pressure ranges and output signals does the KDS611 support?

The KDS611 covers pressure ranges from -100 kPa to 100 MPa in gauge, absolute, and negative pressure modes. Output signal options include:

• 4~20mA (standard)
• RS485 (Modbus-RTU protocol)
• 0~10VDC
• 0~5VDC
• 1~5VDC
• 0.5~2.5VDC (customizable)

Supply voltage is 12~36VDC (standard), 15~36VDC (with display or 0~10VDC output), and 3~5VDC (for 0.5~2.5VDC output).

What accuracy classes and protection ratings does the KDS611 offer?

The KDS611 offers the following accuracy classes:

Display accuracy is 0.5 class with LED digital display. Protection rating is IP65 (without display) or IP54 (with display). It has an overload capacity of 200% FS or 120 MPa (whichever is smaller), stability of ±0.1% FS/year, and temperature drift of ±0.01% FS/°C within compensation range (-10~70°C).

How do I choose the right KDS pressure gauge or calibrator for my application?

Here is a quick selection guide:

• Highest precision laboratory calibration → DPG100 (0.02% F.S) or DPC100 calibrator (0.02% F.S)
• General industrial pressure testing → DPG280 (0.2% F.S, economical)
• Micro-pressure measurement → DPG103
• Pneumatic pressure generation → KT30 (up to 100 bar)
• Hydraulic pressure generation (portable) → KT50 (up to 700 bar)
• Hydraulic pressure generation (bench-top) → KT100 (up to 2500 bar)
• Temperature calibration → KDS801 Dry Block Calibrator
• Process signal calibration → KT-1825 Multifunction Process Calibrator
• Pressure switching and control → KT-S828E Digital Pressure Switch
• Pressure transmitter → KDS611 Pressure Transmitter
• Highest accuracy hydraulic pressure reference → KD Series Dead Weight Tester (up to 0.005% accuracy)
• Highest accuracy pneumatic pressure reference → KDQ Series Pneumatic Dead Weight Tester (up to 0.005% accuracy)

What pressure connection types are available on KDS instruments?

KDS instruments support various pressure connection types including 1/4 NPT, 1/2 NPT, G1/2, M20x1.5, and 1/4 BSP. The DPG100 offers 1/4NPT, 1/2NPT, G1/2 or M20x1.5 connections. The DPG280 offers 1/4NPT or 1/4BSP. The KT series comparators use M20x1.5 Female output connections. Custom connections are available upon request.

Does KDS Instrument provide calibration certificates?

Yes, KDS Instrument provides optional NIM-traceable calibration certificates for instruments like the DPC100. The KD Series Dead Weight Testers come with a certificate of approval and calibration record. Contact KDS Instrument at sales@kds-instrument.com or +86-010-21786280 for specific certification requirements.

How can I request a quote or inquire about KDS products?

You can request a quote by:

• Visiting our Contact Us page
• Emailing: sales@kds-instrument.com
• Calling: +86-010-21786280
• WhatsApp/WeChat: +8613693229193

Each product page also has an "Inquire Now" button for quick inquiries.