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Pressure Calibrators

Intelligent Digital Pressure Gauges
IQS311 Intelligent Digital Pressure Calibrator (Measuring Instrument Type Approval Certificate No.: 2017F818-33)
(With electrical signal measurement function, suitable for verifying general analog pressure gauges, digital pressure gauges, precision analog pressure gauges, pressure transmitters, HART smart pressure transmitters, pressure switches, electric contact pressure gauges and other pressure instruments.)
312 Precision Digital Pressure Gauge
(Suitable for verifying general analog pressure gauges, digital pressure gauges, precision analog pressure gauges)


Product detail

I. IQS311 Intelligent Digital Pressure Calibrator

(Measuring Instrument Type Approval Certificate No.: 2017F818-33)
(With electrical signal measurement function. Suitable for verifying general analog pressure gauges, digital pressure gauges, precision analog pressure gauges, pressure transmitters, HART smart pressure transmitters, pressure switches, electric contact pressure gauges and other pressure instruments.)

  • Built-in HART function replaces the HART handheld communicator. It can set or calibrate HART transmitter ranges, configure linear or square-root functions, and is more convenient to use than a handheld communicator.

  • Ideal for verifying electric contact pressure gauges. During indication verification, it simultaneously tests the upper switching value and lower switching value, with memory display function.

  • Can accommodate 1~2 built-in pressure modules. A single device with two pressure modules doubles the pressure coverage, reducing the need to swap standard pressure calibrators and cutting the number of calibrators needed on-site by half.

Features

  • Pressure up to 250 MPa

  • Built-in HART function replaces HART handheld communicator; Chinese display for easy operation

  • DC 24V power supply — no external power needed for transmitter verification

  • Built-in current and voltage measurement

  • Automatic temperature compensation

  • Data storage

  • Switchable 5-digit / 6-digit display

  • Backlit LCD display

  • Removable rechargeable lithium battery

  • Clock display function

  • Integrated design of pressure display and pressure module for convenient on-site verification

Main Technical Parameters

表格
ItemMeasurement RangeMaximum Permissible ErrorResolution
Current measurement(-25 ~ 25) mA±(0.01% RD + 0.005% FS)0.1 μA
Voltage measurement(-50 ~ 50) V±(0.01% RD + 0.005% FS)0.1 mV
DC power output24 VDC ± 0.5 V—Max load current: 50 mA
Switch on/off detectionVoltage range (3 ~ 24.4) V——
Dual-switch function:Simultaneously detects two pressure switches — particularly suitable for verifying dual-point switches and electric contact pressure gauges.

General Technical Specifications

  • Pressure units:Pa, kPa, MPa, psi, bar, mbar, inH₂O, mmH₂O, inHg, mmHg, kgf/cm², etc.

  • Ambient temperature:(-10 ~ 50) °C; Relative humidity:< 95%; Storage temperature:(-20 ~ 70) °C

  • Atmospheric pressure:(86 ~ 106) kPa

  • Battery operating time:Approx. 80 hours; Battery charging time:Approx. 3 hours

  • Dimensions:Gauge head Φ120 mm × 46 mm, total length 184 mm

  • Weight:0.7 kg; Communication interface:RS232

  • Pressure connection:M20×1.5 male thread, Φ6 mm quick-connect female socket (differential pressure type); Electrical connection:Φ4 mm banana plugs

II. IQS312 Precision Digital Pressure Gauge

(Measuring Instrument Type Approval Certificate No.: 2017F818-33)
(Suitable for verifying general analog pressure gauges, digital pressure gauges, precision analog pressure gauges)
The precision digital pressure gauge is built on a USB digital pressure module with the addition of a 5-digit FNT-mode LCD display. It features ultra-low power consumption, and undergoes high/low temperature aging and temperature compensation. Strictly designed to meet specifications, it replaces analog pressure gauges and digital pressure instruments.
Can accommodate 1~2 built-in pressure modules. A single device with two pressure modules doubles the pressure coverage, reducing the need to swap standard precision digital pressure gauges and cutting the number of standard gauges needed on-site by half.

Features

  • Industrial-grade components with high-performance detection, meeting accuracy requirements

  • High intelligence with digital compensation, digital calibration, and automatic temperature compensation

  • Suitable for both laboratory and industrial on-site use

  • Power supply:1 × removable 9V battery

General Technical Specifications

  • Pressure units:Pa, kPa, MPa, psi, bar, mbar, inH₂O, mmH₂O, inHg, mmHg, kgf/cm², etc.

  • Ambient temperature:(-10 ~ 50) °C; Relative humidity:< 95%; Storage temperature:(-20 ~ 70) °C

  • Atmospheric pressure:(86 ~ 106) kPa

  • Dimensions:Gauge head Φ120 mm × 46 mm, total length 184 mm

  • Weight:0.7 kg; Communication interface:RS232

  • Pressure connection:M20×1.5 male thread, Φ6 mm quick-connect female socket (differential pressure type); Electrical connection:Φ4 mm banana plugs


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