SJ Gauge PRD-108 precision digital pressure gauge, front view

SJ Gauge PRD-108 digital pressure gauge, rear view with RS232 interface

SJ Gauge PRD-108 digital pressure gauge with side port and bottom connection

SJ Gauge PRD-108 digital pressure gauge with two side pressure ports

SJ Gauge PRD-108 low differential pressure gauge with base-mounted connections

Digital Pressure Gauge, Precision

Model: PRD-108

Standard accuracy of ±0.05% F.S., with options up to ±0.01% F.S. for precision measurement and calibration.
Six-digit backlit LCD with a pressure bar graph, ambient temperature and battery level display.
RS232 communication and a rechargeable lithium battery with a specified battery life of 80 hours.

Responsive after-sales service / Customizable
High quality / One-year warranty
Product images are for reference only. Final specifications are based on the confirmed order.

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Description

The PRD-108 precision digital pressure gauge is designed for precision pressure measurement, pressure gauge calibration and pressure testing. It can serve as a reference instrument for applications requiring high-accuracy pressure readings. Standard accuracy is ±0.05% F.S., with ±0.01%, ±0.025% and ±0.1% F.S. options available to suit different measurement requirements. Gauge, compound, vacuum and differential pressure configurations are available, with selectable positive-pressure ranges from 0 … 0.7 bar to 0 … 2500 bar.

A large six-digit LCD with white backlight displays pressure, a pressure percentage bar graph, ambient temperature and battery level. Nine selectable pressure units and an adjustable display update rate accommodate different testing requirements. The gauge features a silicon pressure sensor with a 316L stainless steel diaphragm, an RS232 communication interface and a 7.4 VDC rechargeable lithium battery with a specified battery life of 80 hours. It is suitable for indoor measurement and calibration work.

Selection note: Availability of ±0.01% F.S. versions above 700 bar and ±0.025% F.S. versions above 1000 bar requires confirmation.

Specifications

Basic information
Product type	Pressure gauge
Model	PRD-108
Connection location	Bottom mount (pressure range > ±100 kPa) Bottom mount, gauge pressure (pressure range ≤ ±100 kPa) Bottom mount, differential pressure (range ≥ 40 kPa) Bottom-mounted, differential pressure (range < 40 kPa)
Pressure type	Gauge pressure Compound pressure Vacuum pressure Differential pressure
Nominal size	66 (W) × 42 (H) mm
Case material
Bezel	Aluminum alloy
Back case	ABS plastic
Interface
Display	6-digit large LCD with white backlight Pressure percentage indication with bar graph Ambient temperature display Battery level indicator
Resolution	0.0001
Accuracy specifications
Measuring ranges
Positive pressure	0 … 0.7 bar to 0 … 2500 bar
Compound pressure	-1 … 1 bar
Vacuum pressure	-1 … 0 bar
Pressure units	Pa, kPa, MPa, psi, bar, mbar, kgf/cm², mmH₂O, mmHg 9 selectable pressure units; available units are automatically adjusted according to pressure range and display digits.
Accuracy	±0.01% F.S. (ranges above 700 bar require confirmation) ±0.025% F.S. (ranges above 1000 bar require confirmation) ±0.05% F.S. (standard) ±0.1% F.S.
Response time	Accuracy ≤ 0.025% F.S.: 150 ms Accuracy > 0.025% F.S.: 1 s
Update rate	1 / 2 / 3 / 10 times/s (selectable; default: 3 times/s)
Temperature measuring accuracy	±2°C
Measuring element
Sensor	Silicon pressure sensor with 316L stainless steel diaphragm
Process connection
Thread specification
Standard size	1/4 NPT, male thread M20 × 1.5, male thread
Wetted parts material	316 stainless steel
Operating conditions
Medium temperature	-10°C … 50°C
Ambient temperature	-10°C … 50°C
Storage temperature	-20°C … 70°C
Operating temperature	-10°C … 50°C
Temperature compensation range	-10°C … 50°C
Atmospheric pressure	86 … 106 kPa
Ambient humidity	< 95% R.H.
Pressure limitation
Overpressure limit	120% F.S.
Burst pressure	130% F.S.
Ingress protection	IP50, per IEC/EN 60529
Electrical specifications
Power supply
Battery	7.4 VDC rechargeable lithium battery, supplied with an 8.4 VDC charger
Charger plug type	Type C Europlug (Ø4.0 mm)
Battery life	80 hours
Overpressure alarm	110% F.S.
Communication interface	RS232
Options
Options	Vacuum resistance Taiwan plug adapter RS232 male-to-male communication cable RS232 male-to-USB male communication cable Diaphragm seal mounted Stainless steel tag Custom logo Custom product label Custom packaging box
Compliance	CE marking, subject to applicable EU directives
Calibration	Factory calibration certificate Third-party laboratory calibration certificate TAF-accredited laboratory calibration report TAF-accredited laboratory calibration report with ILAC MRA mark CIPM MRA recognized calibration report
Documentation
Provided free of charge upon request at the time of order.	Quality certificate One-year warranty certificate