senseca PRO 211-x Differential Manometers Instruction Manual

OPERATING MANUAL
PRO 211-x
PRO 215-x
Differential manometers

General information

Read this document carefully and familiarize yourself with the operation of the device before using it.
Keep this document ready to hand and in the immediate vicinity of the device so that it is always available to the personnel/user in case of doubt.
Only technically qualified persons are permitted to carry out commissioning, operation, maintenance and decommissioning. The personnel must have carefully read and understood the operating manual before starting any activity.
Legal notices

• For your safety, use only the manufacturer’s original spare parts and accessories. We assume no responsibility for the use of other products and any resulting damage.
• The user must have adequate knowledge of the measuring process and use of the measurements. The user is liable in case of damage/danger due to misinterpretation of the measurements as a result of inadequate knowledge.
• The liability and warranty of the manufacturer for product damages and consequential damages are voided in the event of misuse, failure to comply with these operating instructions, failure to observe safety warnings, assignment to inadequately qualified technical personnel and arbitrary modifications of the device.
• No part of this document may be reproduced, modified or translated without prior written permission of the product manufacturer. In case of ambiguity between different language versions of this document, the English version applies.
• This document does not create any legally binding obligations for the product manufacturer. All legally binding obligations are included only in the General Terms and Conditions of Sale.

Correctness of content

• This document was checked for corrected contents and is subject to a continuous updating process. This does not rule out potential errors. In the event that errors are discovered or in case of suggestions to make this document more user-friendly, please inform us via the contact information given in this document.
• We reserve the right to change the product specifications and the contents of this document without prior notice.

Explanation of symbols used

Danger!
Warning of danger that could result in death, serious bodily injury, or serious property damage if not observed.
Caution!
Warning of potential danger or harmful situation that may cause damage to the device or the environment if not observed.
Attention!
Action that may have a direct effect on operation or may cause an unexpected behavior.
1.1 Safety information
Fault-free operation and operational safety of the device can only be guaranteed if the general safety requirements and the specific safety requirements in this document are observed.
Do not use the device in climatic conditions other than those specified in this document.
Do not use the device in places with:

• Rapid ambient temperature variations that may cause condensation.
• Direct vibrations / shocks to the device.
• High-intensity electromagnetic fields or static electricity.

Intended use
The device is a handheld meter designed for measuring differential pressure in air and non-aggressive dry gases.
Foreseeable misuse
If the following notices are disregarded, personal injury or death, as well as property damage can occur.
Danger!

• Do not use in safety / emergency stop devices!
• Not suitable for use in hazardous areas (Ex-environments)!
• Not suitable for diagnostic or other medical purposes on patients!
• Not suitable for SIL (Safety Integrity Level)!
• The device is not suitable for contact with food!
• Not suitable for children!
• Do not use as PPE (Personal Protection Equipment).

Caution!
Do not use if:

• There is visible damage to the device.
• The device is not working as expected.
• The device has been stored under unsuitable conditions for an extended period.

On suspicion that the device can no longer be operated without danger, it must be decommissioned and prevented from recommissioning with appropriate labelling.
In case of doubt, send the device to the manufacturer for repair or maintenance.
Attention!
Remove batteries to prevent leakage if the device is stored at a temperature above 50 °C or not used for an extended period of time.

Overview

PRO 211-x and PRO 215-x are professional handheld differential pressure meters. PRO 215x also has data logging capabilities.
The meters have an internal digital differential pressure sensor. Offset and slope user corrections allows compensating any possible sensor drift with time, for the best measuring accuracy.
Supplied with universal barbed pressure ports for connecting 4 and 6 mm inner diameter hose.
The pressure ports are screwed to the meter by a standard G 1/8 thread, allowing the user to change them with a different type of port, if necessary, to fit his specific needs.
Detection of minimum, average and maximum values. The user can reset the statistical info to start a new statistical calculation.
Alarm thresholds can be set, to warn the user when the set values are exceeded.
The HOLD feature allows freezing the measurement on display, while the REL feature allows showing the measurement against a value determined by the user.
The meter can be connected to a PC via the USB-C port, for data acquisition in COM interface mode. The logger version PRO 215-x can operate in Mass storage mode, for viewing or downloading the files stored in the internal memory or connecting to the  roXware application software.
Powered by 4 standard AA size alkaline batteries. For permanent operation, the instruments  can also be powered via the USB-C port by a standard 5 Vdc standard power adapter or suitable power bank.
The configurable auto-off feature and LCD backlight level allows for more energy saving options.
2.1 Scope of delivery
PRO 211-x is supplied with:

• Quick start guide
• 4 alkaline batteries, AA size
• 2 PVC hoses, inner Ø 4 mm, outer Ø 6 mm
• Test report

PRO 215-x is additionally supplied with a USB cable.
The ProXware application software is downloadable from Senseca website.

Description

1. Pressure ports.

2. Left function key: runs the command shown at the bottom left on display.

3. OK key: confirms the selection.

4. key: in measurement display cycles through the various available visualization modes; in the menu goes up one level, cancelling any unconfirmed changes.

5. F key: reserved.

6. Status LED.

7. USB-C port for connecting the PC or the external power supply.

8. ON/OFF key: turns the instrument on/off.

9. Down arrow key: scrolls down in a list or decreases the value of a parameter.

10. MENU key: enters the configuration menu.

11. Up arrow key: scrolls up in a list or increases the value of a parameter.

12. Right function key: runs the command shown at the bottom right on display.

13. Foldable stand: pull to open the stand.

14. Magnet, for attachment to metal surfaces.

15. Battery compartment fixing screw.
    DISPLAY Symbols in the status bar:| Battery charge level
    ---|---
    | External power supply connected
    | cor Measurement correction applied
    | hld Hold function active
    | rec Logging in progress
    | al. Measurement in alarm
    | USB USB port connected to PC
    14:25| Current time

16.  Status bar.

17.  Measured parameter and unit of measurement.

18.  Function corresponding to the left function key.

19. Function corresponding to the right function key.

20. Measured value.

Preparing the instrument

Power supply
The instrument is powered by 4 AA size alkaline batteries, already assembled in the device as standard.
If for some reason (e.g., shipping rules) the batteries are not already assembled, unscrew the battery cover fixing screw and remove the cover, then insert the batteries as shown below.

The instrument can also be powered via the USB-C port by a 5 Vdc standard power adapter or power bank. If a power bank is used, make sure it is of appropriate capacity and does not have the auto-shutdown function when the current draw is very low (for example, suitable power banks are those in the Varta Power Bank Energy series).
Pressure ports connection
The instrument is supplied as standard with universal barbed pressure ports for 4 and 6 mm inner diameter hose. Connect the hoses respecting the +/- polarity according to the system to be monitored. Attention!
Use hoses with a diameter compatible with the pressure ports. The inner diameter of the hose should not be too large to avoid pressure loss and should not be too small to avoid mechanically forcing the ports when inserting the hose.
Caution!

• Use hoses suitable for the pressure to be measured.
• It is recommended that the hoses are not under pressure during connection.
• It is recommended to secure the hoses to the pressure ports with hose clamps when measuring pressures above 1 bar. GDZ-18 hose clamp is available as optional accessory.

The pressure ports are interchangeable. It is possible to unscrew the ports to replace them with ports of a different type, provided they have G 1/8 thread. When tightening the ports, use a suitable tool and observe the maximum torque of 2 Nm.

Measurement mode

To switch on the instrument, press the ON/OFF key. After a few seconds, the instrument displays the measured value.
Note: when the instrument is turned on for the first time, it automatically enters the menu displaying some factory settings (language, date/time, etc.); press repeatedly OK to accept the proposed settings or change them as indicated in the Configuration chapter [ p.13].
By repeatedly pressing the key, measurements can be displayed in different formats:

| Parameter displayed in large format.
---|---
| Parameter displayed in medium format.
| Parameter displayed in medium format with indication of maximum , average and minimum  values.
| One parameter displayed in large format and the remaining in small format.

Parameter displayed numerically and graphically.
To change the unit of measurement, see the Configuration chapter [ p.13].
5.1 Hold function
The Hold function, which can be activated/deactivated by pressing the right function key, freezes the current measurement value on the display.
The function activation is highlighted by the symbol in the status bar of the display.
5.2 Rel function
The Rel function displays the relative measurement against a reference value, consisting of the measurement value at the time the function is activated.
To activate the relative measurement, press the left function key (Rel ∆), the measurement is highlighted in negative, then press the left function key (∆ on). The symbol ∆ and the reference value appear on display. To disable the relative measurement, press the left function key (∆ off) again.
By pressing the right function key (Exit ∆), the instrument exits the relative measurement enable/disable (∆ on/off) mode.
The Rel ∆ command is not available:

• in the screen with the statistical values;
• in the screen with the graph;
• while logging.

5.3 Reset of the statistical values
To reset the statistical values, press the left function key (Select) in the measurement screen with the maximum/medium/minimum values, the measurement is highlighted in negative, then press the left function key (Clear).
To exit the statistical values reset mode, press the right function key (Exit).

Configuration

Press the MENU key to enter the configuration menu.
The menu is structured in levels. The current level is indicated by the number of overlapping bars in the menu header: Use the down/up arrow keys to select an item, press OK to confirm.
The presence of the scroll bar indicates that there are additional items available beyond those displayed.
The left function key (Help) provides a description of the selected item. If the help function is entered, press the left function key (Help off) again to exit.
Attention!
It is not possible to access the menu if the instrument is logging.
6.1 Menu structure
The menu structure is shown below; each item is preceded by the level according to the bar symbology shown on the display.

‒ Measures list
‒ Recording
= Start recording
= Set interval
‒ Chart setup
= Channel select
= Chart interval
‒ USB mode
‒ Alarm settings
‒ Settings
= Device info
= Backlight
≡ BL activation
≡ BL intensity
= Auto-off
= Date & time
= Time zone
= Language
= Dark mode
= Factory reset
‒ Pressure sensor
= Measures units
= Alerting
= Min. alarm()
= Max. alarm()
= Hysteresis(*)
= Correction
≡ Zero point
≡ Gradient
= Probe info| Selection of the quantities to display and log
Available only in PRO 215-x. Item visible only if USB mode=COM interface.
Logging start
Setting of logging interval: 1/2/5/10/15/30 s, 1/2/5/10/15/30 min, 1 h
Setting of the measurement graphical display
Selection of parameters to be displayed graphically (selectable from those
enabled in the “Measures list” menu)
Chart measurement interval: 1/2/5/10/15/30 s, 1/2/5/10 min
USB setting: COM interface (for logging and serial communication) or Mass storage (for viewing logging files from PC)
Type of alarm signaling: Off, acoustical (buzzer) and/or optical (flashing backlight and red flashing status LED)
Displaying of instrument info (model, S/N, FW revision, …)
Backlight configuration
Backlight duration: Off, 5 s, 30 s, 1 min, always On
Backlight intensity: Low, Medium, High
Auto-off setting: Off, 30 min, 1/2/4/6/12 h
Setting of date and time (yyyy-mm-dd hh:mm:ss)
UTC or CET time zone setting
Selection of the menu language
Black background enabling/disabling
Reset to factory settings
Measurement settings
Setting of the unit of measurement: Pa, hPa, kPa, bar, mbar, psi, inHg, mmHg, inH2 O, mmH2 O (units actually available depend on model)
Alarm thresholds enabling/disabling
Lower alarm threshold (alarm if measure < threshold)
Upper alarm threshold (alarm if measure > threshold)
Thresholds hysteresis
Measurement adjustment
Offset adjustment
Slope adjustment
Information on the sensor

(*) The item does not appear if “Alerting” is set to “Off”; to display the item, first select a measure/channel to associate the alarm with.
To go back up one level within the menu, press the key. The MENU key allows exiting the menu directly and return to measurement mode from any level (except from parameter setting screens, from which you can exit only with .
6.2 Configuring a parameter
Configuring a parameter may require choosing an option from those proposed, or setting a numerical value.
Configuring a parameter by choosing an option from those proposed:
The current setting is marked by the check mark. To change it, choose an option with the down/up arrow keys, then press OK to confirm.
Pressing the key it is possible to exit by canceling changes not yet confirmed. Configuring a parameter by setting a numerical value:
Select the various digits using the function keys (< >). To change a digit, use the down/up ar- row keys. When finished, press OK to confirm the value.
Pressing the key it is possible to exit by canceling changes not yet confirmed.

Measurement basics

The instrument internal pressure sensor detects the difference between the pressure applied to the “+” input and the pressure applied to the “-” input.
Before taking the measurement, check the need to perform zeroing by leaving the pressure inputs open (see next chapter for measurement adjustment).
By connecting only the “+” input and leaving the “–” input open, the pressure difference from the ambient pressure (relative pressure) can be measured.
Caution!

• Do not exceed the maximum overpressure specified, the sensor may be damaged.
• The sensor is suitable for measurement in air and non-aggressive dry gases: do not use for measurement in corrosive gases.
• Avoid performing measurements in the presence of high-frequency sources, microwaves or strong magnetic fields.
• Connect the hoses to the instrument without forcing or bending the pressure ports.

8 Measurement adjustment
The measurement can be adjusted by setting the following parameters, available in the Pressure sensor → Correction:

• Zero point: adds an offset (Poffs ) to the measurement. Displayed value = Measured value + Poffs
• Gradient: applies a percentage correction (Cslope %) to the measurement. Zero indicates no correction.
  Displayed value = (Measured value + Poffs ) * (1 + Cslope % / 100)

If a measurement correction is applied by setting a value other than zero for the “Zero point” and/or “Gradient” parameters, the cor symbol appears on the display.
Logging (PRO 215-x only)
The logging function stores in the memory of the instrument the detected measurement, along with the date and time of each sample. The data are stored in CSV format.
Logging is automatic according to the set interval. To start logging, select the Start recording item from the Recording menu.
Attention!

• To use the logging function, the USB mode menu item must be set to COM interface.
• The Logging function records only the quantities enabled in the measurement screens.

Before starting logging, make sure that all quantities of interest are enabled.
By selecting “Start recording,” the instrument automatically exits the menu. It is not possible to access the menu during logging.
The logging activation is highlighted by the rec symbol in the status bar of the display. During logging, the status LED briefly flashes green every 5 seconds.
With logging active, in the measurement screens the left function key assumes the function of Stop logging.
During logging, the instrument auto-off is disabled.
9.1 Viewing the logged data
The instrument can be connected to the PC via a standard USB-C cable. The instrument is viewed by the PC as a mass storage device containing the various log files in CSV format.
Attention!
For viewing files from PC, logging must be off and the USB mode menu item must be set to Mass storage.
The files can be opened with any standard software capable of reading CSV files, or, the ProXware application software can be used.
9.2 Deleting the logged data
The log files can be erased from the PC using a file manager.

Serial communication

Serial commands can be sent to the instrument, to read the instrument information and the measurements.
To send serial commands to the instrument, the USB mode menu item must be set to COM interface.
In the serial communication software used, the PC COM port number to which the instrument is connected and the following parameters should be set:

• Baud rate = 115200
• Data bits = 8
• Stop bits = 1
• Parity = None

The full list of commands supported by the model, with their description, is obtained by sending the following command:
GetCommandList: 0