M2110P SMART PRESSURE GAUGE USER’S MANUAL Meriam’s M2110P Smart Pressure Gauge is a microprocessor-based pressure sensing device. The various ranges available provide measurement of differential (dry/dry or wet/wet), gauge, compound or absolute pressure. Three configurations are available: Battery, SetPoint, and Current Loop models. All models are programmable through the front keypad. The user’s program information is stored in non-volatile memory and is retained when the power to the gauge is removed.
Safety Information Failure to follow all instructions could result in injury. Read, understand and follow all safety warnings and instructions provided with this product. Also, meet or exceed your employer’s safety practices. In no event shall Meriam be liable for any indirect, special, incidental, consequential or punitive damages or for any lost profits arising out of or relating to any services provided by Meriam or its affiliates.
Table of Contents 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. Certification / Safety / Warnings.....................................................................4 Pressure Display............................................................................................5 Keypad Functions ..........................................................................................6 Programmable Register Overview ........................................................
1. Certification / Safety / Warnings Fire/Explosion Hazard. This instrument is not intrinsically safe. DO NOT use or service in areas that may contain flammable gas or vapors, combustible dusts or ignitable fibers where an unintended spark can cause a fire/explosion. Do not exceed the Pressure Limits listed in the Product Specifications section of this manual. Failure to operate within the specified pressure limit could result in death or serious injury.
2. Pressure Display Indicators During normal operation, the gauge displays the pressure value in large numerals, and the bottom of the display shows the current Engineering Unit. The top of the display will show PRGM when the gauge is in Program Mode (flashing when “view only”). For SetPoint models, the top of the display will show SET1/SET2 to indicate activated outputs (or corresponding register opened in Program Mode).
3. Keypad Functions The keys on the front panel perform multiple functions. Their function differs depending on whether the gauge is in Measure Mode or Program Mode. • Measure Mode is the normal operating mode for measuring and displaying pressure. This mode is always default after power-up or reset. • Program Mode is used to configure the various options of the gauge. This mode is denoted by a PRGM indicator on the display.
Backlight/Do wn Arrow Key Document Symbol: (Down↓) Measure Mode Toggles the display Backlight on and off. Note that the default Backlight status for the Battery model is OFF to conserve battery life. The other models will retain the prior Backlight status as default. Program Mode Scroll down function. Scrolls down through the available programmable registers. Once a register is opened, this key allows editing by scrolling down through the values in the register.
4. Programmable Register Overview All M2110P Smart Pressure Gauges have programmable registers that allow the gauge to be configured to fit the pressure measurement application. Programmable registers are numbered P0 through P8. Each register controls a specific aspect of the gauge’s performance. A description of all programmable registers, and step by step instructions for their use, is included below.
5. Engineering Units The following Engineering Units are available on the M2110P: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. InH2O PSI Kg/cm2 kPa mBar Bar cmH2O inHg mmHg User Units – Inches of Water Column (ref. temp. selections: 20°C, 4°C, 60°F) – Pounds per Square Inch – Kilograms per Centimeter squared – KiloPascals – milliBar – Bar – Centimeters of Water Column (ref. temp. selections: 20°C, 4°C, 60°F) – Inches of Mercury Column (ref. temp. 0°C) – milliMeters of Mercury Column (ref. temp.
6. Zero Reference Zeroing the gauge consists of accepting the current pressure value as the zero pressure reference. To set the zero reference pressure, all pressure sources should be disconnected from the gauge, and its temperature should be stable. The pressure reading of the gauge is linearly offset from the zero reference value. Absolute-Isolated pressure sensors are theoretically zero-referenced to absolute zero pressure (perfect vacuum), and cannot be re-zeroed without a vacuum source.
3 Press PRGM/Enter→ before the countdown expires1. This acknowledges the warning. The display will again countdown from “0005” to “0000”. 4 Press ZERO again (Up↑ and Down↓) before the countdown expires1. This confirms the zero action. The display will flash “0000” several times while the new zero is taken. Notes 1. During steps 2 or 3, if the countdown expires, the gauge will return to Measure Mode unchanged. 2.
The Zero function (Up↑ and Down↓) will reset the entire register to 00 and allow editing to continue. 5 Press the PRGM/Enter→ key to accept the digit. The next digit begins flashing for edit. 6 Repeat steps 4 and 5 for the second digit. The complete 2-digit value will be accepted, and the register is closed (display shows P0 for selection). 7 Press the Backspace← key to activate the lockout and return to Measure Mode. Normal Pressure Display. Notes 1.
3 Press the Up↑ or Down↓ keys repeatedly to scroll to the desired register. Display shows “P1”. The Zero function (Up↑ and Down↓) will reset the scroll to P0 and allow selection to continue. 4 Press PRGM/Enter→ to open the register. The display shows the current value. 5 Press the Up↑ or Down↓ keys repeatedly to scroll to the desired register value. All available choices are scrolled. (Choices indicate actual Timeout in seconds.
STEP BY STEP: P2, DAMP RATE Step Action Display 1 Gauge should be in the normal Measure Mode. Normal Pressure Display. 2 Press the PRGM/Enter→ key. The PRGM annunciator shows at the top of the display, and the display shows the register name “P0”. If the lockout is active, the gauge will now prompt for entry of the lockout code. Refer to “STEP BY STEP: ENTERING A LOCKOUT CODE (When Prompted)” on page 22. 3 Press the Up↑ or Down↓ keys repeatedly to scroll to the desired register.
STEP BY STEP: P3, DENSITY OF WATER REFERENCE TEMP Step Action Display 1 Gauge should be in the normal Measure Mode. Normal Pressure Display. 2 Press the PRGM/Enter→ key. The PRGM annunciator shows at the top of the display, and the display shows the register name “P0”. If the lockout is active, the gauge will now prompt for entry of the lockout code. Refer to “STEP BY STEP: ENTERING A LOCKOUT CODE (When Prompted)” on page 22.
QUICK REFERENCE: P4, USER SCALE Px Name Description Value Range P4 User Units Full Scale Enables gauge to display units other than factory defined Engineering Units. 0 to 9,999 (Keypad) User defined 0 to 19,999 (Serial) value. Notes STEP BY STEP: P4, USER SCALE Step Action Display 1 Gauge should be in the normal Measure Mode. Normal Pressure Display. 2 Press the PRGM/Enter→ key. The PRGM annunciator shows at the top of the display, and the display shows the register name “P0”.
STEP BY STEP: P4, USER SCALE Step Action Display Notes 1. Preceding/Trailing zeroes are determined by where the user places the decimal point. When opening a register, the value is always shown padded with trailing zeroes. 2. Only 4 digits are available for editing (the ½ digit is not provided), plus the decimal point and negative sign (negative is not applicable to register P4).
STEP BY STEP: P5, SETPOINT OPTIONS Step Action Display 1 Gauge should be in the normal Measure Mode. Normal Pressure Display. 2 Press the PRGM/Enter→ key. The PRGM annunciator shows at the top of the display, and the display shows the register name “P0”. If the lockout is active, the gauge will now prompt for entry of the lockout code. Refer to “STEP BY STEP: ENTERING A LOCKOUT CODE (When Prompted)” on page 22. 3 Press the Up↑ or Down↓ keys repeatedly to scroll to the desired register.
13. P6 & P7 – SETPOINT (Set1 & Set2) SetPoint Model These registers define the pressure points at which the SPDT relays will energize. The relay will energize when the pressure exceeds its corresponding value, and de-energize when the pressure drops below the value (minus deadband; Register P8). P6 defines the SET1 relay, and P7 defines the SET2 relay. P6 and P7 settings are completely independent of each other; either may be greater, less than, or equal to the other.
QUICK REFERENCE: P6/P7, SETPOINTS Px Name Description Value Range Notes P6 SET1 SetPoint model: –20% to +120% of Full Scale User defined values. –20% to +120% of Full Scale On Current Loop models, SET1 cannot equal SET2. Controls SET1 relay. Current Loop model: Sets 4.00 mA value. P7 SET2 SetPoint model: Controls SET2 relay. Current Loop model: Sets 20.00 mA value. STEP BY STEP: P6/P7, SETPOINTS Step Action Display 1 Gauge should be in the normal Measure Mode. Normal Pressure Display.
8 Press the Up↑ or Down↓ keys repeatedly to scroll to the desired decimal point position, and to select positive/negative. If the Zero function (Up↑ and Down↓) is used during decimal point editing, it will still reset the register’s value to 0000, and not affect the decimal point position or negative sign. Decimal point moves accordingly. Please read carefully note 4 on page 17. Negative Sign activates and de-activates when the decimal point sequence is scrolled through completely.
5 Press the Up↑ or Down↓ keys repeatedly to scroll to the desired register value. The Zero function (Up↑ and Down↓) will reset the scroll to default and allow editing to continue. All available choices are scrolled. (Choices indicate actual Deadband in percent of full scale.) 6 Press the PRGM/Enter→ key to accept the desired value. The value is accepted, and the register is closed. Display shows “P8”. 7 Press the Backspace← key to activate the register setting and return to Measure Mode.
3 Press PRGM/Enter→ key to accept the digit. The next digit begins flashing for edit. 4 Repeat steps 2 and 3 for the second digit. The complete 2-digit value will be accepted. If the correct code was entered, the gauge will perform the requested function. Otherwise, an error message is displayed, and the gauge either returns to Measure Mode, or enters a “viewonly” status for the programmable registers (if Program Mode was requested). Notes 1.
SmartGauge/2110P (v5.00). (c)Copyright 2010 Meriam Instrument. SetPoint model. Sensor = 200.0 inH2O; ---------------------------------------------------------------Notice! Changing any value will PAUSE Gauge Operation, which will also pause updates to the outputs and display. ---------------------------------------------------------------Current Full Scale: 200.0 inH2O @ 20 Deg C.
The Notice of “PAUSE Gauge Operation” near the top of the menu is a reminder about this explanation. It is particularly important when a gauge is in service as an in-process instrument, since the gauge will not respond to process conditions while it is paused. TIMEOUT When the menu is displayed, it has no impact on gauge operation or performance. Therefore, the menu will remain displayed indefinitely, or until the operator takes action or the gauge is reset.
17. Error Codes All model M2110P gauges have an error/message feature to inform the operator of problems with the operation or programming of the gauge. These Error Codes and messages are identified and described in the table below. ERROR DESCRIPTION “OP” Overpressure warning. The measured pressure exceeds the full scale pressure by 20% of full scale or more (high or low).
18. Installation & Wiring Differential pressure sensors have two pressure connections on the back of the gauge. The diagram at the left shows the correct connections to obtain the desired type of pressure measurement. Gauge-Isolated and Absolute-Isolated pressure gauges have only one pressure connection. The SetPoint model utilizes the multifunction terminal strip shown at the left. This terminal strip has a NEMA 1 rating. SPDT relays are not powered by the gauge internally.
Note: The Smart Gauge comes with 1/8” FNPT pressure port(s). Gauge and Absolute models only use one pressure port. The unused port vents the enclosure/sensor to atmosphere. DO NOT REMOVE THE SINTERED PLUG (ALLEN HEAD FITTING). The Smart Gauge should be panel-mounted or held firmly in one hand while a small wrench is used to tighten the 1/8” MNPT pipe thread. Do not tighten the fitting without using a wrench on the manifold.
19. Outline Dimensions 20. Panel Mounting 20. Panel Mounting PANEL MOUNTING CUTOUT DIMENSIONS 1. Make a ¼ DIN panel cutout per drawing. 2. Remove the two 6-32 socket head screws in the grooves at the rear of the gauge. 3. Slide the panel mount jacks out of the groove. 3.60" +/- 0.010 4. Insert the gauge through the front of the panel. (92) 5. From the rear, insert the panel mount jacks in the grooves on the side of the gauge, and slide them firmly against the panel. 6.
21. Product Specifications DISPLAY: 4 1/2 digit, 0.6 inch (15.24 mm) LCD. TYPE & RANGE: DN: Differential Non-Isolated CI: Compound Isolated GI: Gauge Isolated AI: Absolute Isolated DI: Wet/Wet Differential Isolated PRESSURE CONNECTIONS: 1/8" female NPT. Brass on non-isolated, 316SS on isolated sensors. MEDIA COMPATIBILITY: Non-isolated sensor for clean, dry, non-corrosive gases. Isolated sensor for fluids compatible with 316SS. ACCURACY*: Indication: ± 0.
22. Range Limits and Indication Sensor Type Hard Under Range Under -20% 1 Soft Under Range -20 to 0% Certified Range (F.S.
23. Service and Calibration In the event an M2110 requires service or needs to be returned for factory recertification, battery replacement, or re-calibration, please contact Meriam at the numbers listed below. The battery board should only be replaced by properly trained technicians in a controlled environment. Contact Meriam for further details. DO NOT send any unit in for service without first contacting Meriam for a Return Material Authorization (RMA) number.
