The PG10 is a digital pressure gauge manufactured by Automation Products Group, Inc. It offers a range of features for pressure measurement, monitoring, and data logging, with various configuration options to suit different applications.

Function Description

The PG10's primary function is to measure and display pressure readings. It supports multiple units of measure, including PSI, BAR, KPA, MBAR, INHG, INH2O, MMHG, KGCM^2, MPA, FTH2O, and CMHG, with custom unit options available for volumetric weight display. The gauge can be configured to display the present pressure reading, maximum pressure reading, and minimum pressure reading, with the ability to reset these maximum/minimum values.

It includes a Peak-Hold feature, which displays the maximum pressure reading since power-on or the last reset. The gauge also incorporates advanced settings for display customization and optional features. An Auto-Off function, applicable to battery-powered units, allows users to set an inactivity time before the gauge powers down, or to keep it continuously powered based on ambient light levels. The decimal place resolution can be adjusted to High, Medium, or Low Resolution. The sample rate for readings can be set to SLOW (4x/second), MEDIUM (8x/second), or FAST (16x/second).

A Bar Graph feature allows users to define 0% and 100% values for a 270° display bar graph, with bars appearing/disappearing in 10% increments. The Full-Scale Range Adjust feature enables fine-tuning of the reading at full-scale pressure within +/-10% of the full-scale value. A Fast Calibration function allows for quick zero and span calibration by applying zero and full-scale pressure.

The PG10 also offers datalogging capabilities, recording pressure readings with associated date/time stamps at user-defined intervals. It can log continuously or based on specific pressure conditions (event logging) using Trip Relay settings. The gauge can store a maximum of 60 records in a FIFO buffer. Users can set the date and time, logging sample rate (1 second, 30 seconds, 1 minute, 30 minutes, 1 hour, 1 day), and enable/disable event logging based on Trip Relay status (T1ON, T2ON, T1T2ON, T1T2OF, T1OFF, T2OFF). Logged readings can be viewed, and logging can be stopped or cleared. The clock can be enabled on the main display, alternating with the unit of measure.

A Tare feature allows setting the current pressure reading as a zero reference to measure net pressure changes. The gauge can be reset to factory default settings.

For models equipped with outputs, the PG10 supports analog signals and trip point relays. Analog Low (AL SET) and Analog High (AH SET) setpoints can be defined for the analog output signal (e.g., 4mA/0V and 20mA/2V/5V). The analog signal endpoints can also be calibrated (AL CAL, AH CAL). Dual SPDT mechanical trip-point outputs (T1 and T2) can be configured with six different logic functions: Normally Closed (Type 0), Exclusive (Type 1), Normally Closed with Hysteresis (Type 2), Normally Open (Type 3), Inclusive (Type 4), Normally Open with Hysteresis (Type 5), and Trip Disable (Type 6). Trip Pressure determines the lower pressure point, and Trip Window defines the pressure range for certain types.

On models equipped with RS-485 Modbus communications, the PG10 can function as a slave device. Users can configure the Baud Rate (2400, 9600, 19200, 33400), Parity (None, Even, Odd), Stop Bits (1 or 2), and Sensor Number (address).

Important Technical Specifications

Overpressure: 2x full scale
Burst Pressure: 4x full scale or 20,000 psig, whichever is less.
Accuracy (linearity & hysteresis): +/-0.25% or +/- 0.1% B.F.S.L.
Housing: IP65
Compensated Temp: 20 to 130°F (-7 to 54°C)
Storage Temp: -40 to 160°F (-40 to 71°C)
Operating Temp: 0 to 160°F (-18 to 71°C)
Electrical (Batteries): (2) standard C cell
Electrical (External Power): 9-28 VDC
Weight: 1.6 lb (0.73 kg)
Case Material: Injection molded Phenolic

Output Specifications:

4-20 mA Output:
- Input Voltage (Excitation): 9 VDC min (no load) to 28 VDC max
- Input Current: 3-30 mA max
- Signal Variance: +/-0.16 mA at set points
- Output/Input: 2 wire loop powered
- Resolution: 14 bit
- Protection: Reversed polarity
0-2 VDC Output:
- Input Voltage (excitation): Battery powered
- Output: Zero set point is +/-0.15 V with a 2 VDC span +/-0.02 VDC
- Output/Input: 2 wire
- Resolution: 14 bit
0-5 VDC Output:
- Input Voltage (Excitation): 9 to 28 VDC
- Input Current: 6 mA max
- Output: 0-5 VDC / +/-0.5 VDC at set points
- Output/Input: Non-isolated 3 wire
- Resolution: 14 bit
- Protection: Reversed polarity
SPDT Relay Trip Points:
- Maximum Switched Voltage: 240 VAC, 220 VDC Max
- Maximum Switched Current: 5 A

Usage Features

The PG10 features a 4-button interface (MODE, ENTR, Up, Down) with dual functions for each button, allowing navigation and configuration within the setup menu and standard operating mode.

Operating Modes: Four modes are available:
- Mode 000 (Full Access): Provides access to all menu settings. Reverts to Mode 003 if no buttons are pushed for 1 minute.
- Mode 002 (Limited Access): Menu is locked. ENTR zeros the reading. Up/Down cycles between Max/Min readings. MODE On/Off for battery-powered gauges.
- Mode 003 (Factory Default): Full access except Full Scale Calibration is locked.
- Mode 005 (Locked Access): All buttons locked except MODE for power on/off on battery-powered gauges.
Setup Menu Access: Accessed by simultaneously pressing MODE and ENTR for 3 seconds, then entering mode 000.
Max/Min Reset: Cycle through options to reset Max/Min readings.
Units of Measure: Select from a wide range of standard units or configure custom units with a conversion factor from PSI.
Peak-Hold: Displays the maximum pressure reading. A "PEAK" icon indicates activation.
Auto-Off: Configurable power-down timer or light-sensor controlled continuous operation for battery-powered units.
Decimal Place: Adjust display resolution (HI RES, MEdRES, LO RES).
Sample Rate: Choose reading frequency (SLOW, MEDIUM, FAST) to balance battery life and responsiveness.
Bar Graph: Customize the 0% and 100% reference points for the visual bar graph.
Range Adjustment: Fine-tune full-scale pressure readings within a 5% window.
Fast Calibration: Quick zero and span calibration process.
Datalogging:
- Set date and time for timestamps.
- Configure logging sample rate.
- Enable continuous or event-based logging (using Trip Relay settings).
- View logged records and clear logging data.
- Enable/disable the clock display.
Tare Feature: Set a zero reference for measuring net pressure changes. A "TARE" icon indicates activation.
Default Settings: Reset the gauge to factory default settings.
Outputs (Optional):
- Configure Analog Low and High setpoints.
- Calibrate analog output endpoints.
- Set Trip Point Output types, pressures, and windows. "T1" or "T2" icons indicate active trip points.
Communications (Optional RS-485 Modbus):
- Configure Baud Rate, Parity, Stop Bits, and Sensor Number.

Maintenance Features

Battery Replacement: Involves untwisting the display locking ring, removing the front display, replacing batteries, and re-securing the display.
Calibration: The Fast Calibration feature allows users to quickly calibrate the zero and span of the gauge. Analog output endpoints can also be calibrated.
Default Reset: The gauge can be reset to factory default settings, which can be useful for troubleshooting or reconfiguring the device.

APG PG10 - Page 43

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