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Blue Sea Systems M2 Instructions Manual

Led temperature monitor
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M2 OLED Temperature Monitor Instructions
PN 1841
Installation Checklist
Check for components included
Read Warning and Cautions
Read Meter Functions and Connections
Read Initial System Setup, Detailed Wiring, and
Mounting Considerations
Prepare materials
Follow Initial System Setup instructions to install meter
Configure Displays
Configure Alarms
Configure Relays
Specifications
Display Size
55mm x 28mm
Power Supply
7V–70V DC
Power Consumption
0.3W–1.0W*
Sensors
Blue Sea Systems PN (1820, 1821)
Sensor Range**
-40°F – 250°F (-40°C –120°C)
Sensor Resolution
1%
Temp Alarms
80dB
External Relay
0.5A DC
* Variable with voltage, display intensity, and sleep mode
Regulatory
Monitor face is IP66 – protected against powerful water jets
when installed according to instructions
** Not all sensors are compatible for full range.
Warning and Caution Symbols
WARNING: The
symbol refers to possible injury to the user or
significant damage to the meter if the user does not follow the procedures.
CAUTION: The
symbol refers to restrictions and rules with regard
to preventing damage to the meter.
WARNING
• If you are not knowledgeable about electrical systems, have an
electrical professional install this unit. The diagrams in these
instructions pertain to the installation of M2 Digital Meters and not
to the overall wiring of the vessel.
• If an inverter is installed on the vessel, its power leads must be
disconnected at the battery before the meter is installed.
• If an AC generator is installed on the vessel, it must be stopped
and rendered inoperable before the meter is installed.
• Verify that no other DC or AC sources are connected to the vessel's
wiring before installing the meter.
CAUTION
• The back of the unit is not waterproof. Do not install where the back
of the meter is exposed to water.
Components Included
M2 Head Unit
Surface Mount Bezel
Surface Mount Cover
Flat Mount Bezel
Mounting Ring
Mounting Nut
Connector
Screwdriver
Retail Package Only
360 Panel Mounting Kit
(PN 1525 sold separately)
Header
Bezel
Mount
Carrier
Mount
Footer
Surface Mount Gasket
and Seal
Flat Mount Clamp
2 x 1820
Temperature Sensors
2 x 1821
Temperature Sensors
#6-32 x 1/4"
Flat Head
Machine Screws
(4X)
Panel
Frame
#6-32 x 3/8"
Flat Head
Machine Screws
(4X)
1

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Summary of Contents for Blue Sea Systems M2

  • Page 1 (PN 1525 sold separately) electrical professional install this unit. The diagrams in these instructions pertain to the installation of M2 Digital Meters and not to the overall wiring of the vessel. • If an inverter is installed on the vessel, its power leads must be Header #6-32 x 1/4"...

  • Page 2: Temperature Functions

    The negative lead of all the temperature sensors should terminate as close as possible to pin 1. For a simple and clean installation, use Blue Sea Systems PN 2304 as a small common bus bar for all of the meters DC negative connection. There should be one connection between pin 1...

  • Page 3: Initial System Setup

    Note: Detailed information of meter use and settings start on page 5. 1. No setup is required to use the 1841 M2 Bilge Monitor. However, you may want to change the input label or turn off unused inputs to prevent them from being displayed.

  • Page 4: Detailed Wiring

    Note: The negative feed of all of the temperature sensors should terminate as close as possible to pin 1. Use Blue Sea Systems’ PN 2304 Mini Bus with a short 18 AWG guage wire from pin 1 to the Mini Bus.

  • Page 5: Using The Meters

    Example Screens From PN 1841 Temperature Meter When an M2 Meter is initially powered up, it will display the Blue Sea Systems Logo, its serial number and its Software revision. After a couple of seconds, the unit will display a high-level System Summary screen.
  • Page 6 Setting Alarms The M2 Meter family provides monitoring capability of temperature input channels. Alarms are triggered if a channel is above or below a certain user selected threshold value. The following example indicates how to setup an over temperature alarm.
  • Page 7 RELAY SETUP & CONTROL M2 Meters provide an option to control an external relay. The M2 can trigger the relay based on high or low temperature levels. These relay options can be set from the Relay Setup menu. To get there, first navigate to the Setup menu. Then scroll to Relay Setup and press the Select button.
  • Page 8 Temp Delay (Relay) A relay delay can be specified so that relays don’t immediately trigger. The relay delay functions the same as the alarm delay. See Temp Delay (Alarm) on page 6 for details Viewing Relay Status To view a complete list of active relays, press Menu>Setup>Relay Setup. Any active relay will flash. Setting Input Thresholds Settings for each channel’s high and low temperature thresholds are provided.

  • Page 9: Display Setup

    Clearing Relay Notification If the Notification option is set to ON then any time the relay is opened (Normally Off) or closed (Normally On). A message will be displayed on the main screen. Pressing a key will clear this notification. If Silence is set to ON then the relay will be opened (Normally Off) or closed (Normally On). Viewing Relay Status For any active alarm, the parameter will flash if it is displayed.

  • Page 10: Version Info

    Changing System Labels The M2 allows the user to change the labels that are displayed above each channel. Each channel can have a maximum of 16 characters however in the summary screens only the first 11 or 12 characters of the channel label are displayed.

  • Page 11: Read Config

    Relay Supply Pin 4 voltage connections are only required if the M2 Meters contains an internal MOSFET relay that can drive external relay is used or if the battery monitor function is used. DC loads up to 0.5A. The input is protected with a thermally activated auto-resetting fuse that will protect against shorts.
  • Page 12 External Alarm (1070 Floyd Bell Turbo) The Relay output terminal can support an external audible alarm. Such as the Floyd Bell Turbo Alarm (1070). External Alarm Supply 5 to 30V DC 1 2 3 4 5 6 7 8 + Red - Silver 1070 External Relay...

  • Page 13: Mounting Templates

    Mounting Considerations M2 Digital Meters have three mounting methods: Surface mount, Flat panel mount, and 360 panel mount. When surface mounted per instructions the unit face is waterproof to IP66. Flat panel and 360 mounting systems are not waterproof. The unit should not be flat panel or 360 mounted if used in an exposed location.
  • Page 14 Cutout Templates 3.34" (84.8mm) Flat Mount Surface Mount Ø2.125" (54mm) 3.03" (77mm) 3.40" (86.5mm) Flat mount bezel edge WARNING! For cutouts to be accurate, print the document at full-scale. Do not print to fit paper size or use any other print scaling options. Measure printed cutouts to confirm size prior to cutting.

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1841

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