Blue Sea Systems 1836, 1837, 1838 Instructions Manual
AC M2 OLED Meter Instructions
PN 1836/ PN 1837 / PN 1838
Installation Checklist
• Check for components included
• Read Warning and Cautions
• Read QuickStart Installation Guide for mounting instructions
• Read System Overview, Mounting Considerations, Detailed Wiring,
and Sensing Description
• Read QuickStart Installation Guide for installation notes
• Follow Initial System Setup instructions
• Congure Displays
• Congure Alarms
• Congure Relays
Display Size 55mm x 28mm
Power Supply 7V–70V DC
Power Consumption 0.3W–1.0W*
* Variable with voltage, display intensity, and sleep mode
Regulatory
Monitor face is IP66 – protected against powerful water jets
when installed according to instructions
1836 Specications
Current
Range 0A–150A (300A optional)†
Resolution (100 to 150) 1A
Resolution (0.0 to 99.9) 0.1A
Current Transformer Included 1 × PN 8256 (150A /50mA)
Alarm / Relay Activation High and Low Current
1837 Specications
Voltage
Range 50V–250V AC (RMS)
Resolution 1V AC
Alarm / Relay Activation High and Low Voltage
Components Included
M2 Head Unit Surface Mount Gasket
Surface Mount Cover
Mounting Ring
Surface Mount Bezel
and Seal
Flat Mount Bezel
Mounting Nut
Flat Mount Clamp
AC Current Transformer
8256 (1X)
1836 and 1838 Only
1838 Specications
Voltage
Range 50V–250V AC (RMS)
Resolution 1V AC
Current
Range 0A–150A (300A optional)†
Resolution (100 to 150) 1A
Resolution (0.0 to 99.9) 0.1A
Current Transformer Included 1 × PN 8256 (150A /50mA)
Alarm / Relay Activation High and Low Voltage, Current,
and Frequency
Frequency
Range 40Hz–90Hz
Resolution 1 Hz
Power
Range 0W–45kW
Resolution (0W–9990W) 10W
Resolution (10kW–45kW) 0.1kW
† Will achieve 300A with an optional current transformer PN 1829
Connector
Connector
1837 and 1838 Only
Screwdriver
Retail Package Only
360 Panel Mounting Kit (PN 1525 sold separately)
Bezel
Mount
Header
Footer
Carrier
Mount
Panel
Frame
#6-32 x 1/4"
Machine Screws
#6-32 x 3/8"
Machine Screws
Flat Head Sheet
Metal Screws
Flat Head
(4X)
Flat Head
(4X)
#8 x 1/2"
(4X)
1
Warning And Caution Symbols
WARNING: The symbol refers to possible injury to the user or signicant 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
• Verify that all AC sources are disconnected before connecting or disconnecting the current transformer. Failure to do so will generate lethal voltages
on the current transformer.
• 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.
• If the meter must be removed, connect the current transformer leads together before restoring power to the AC system. (P/Ns 1836 & 1838 Only)
CAUTION
• The back of the unit is not waterproof. Do not install where the back of the meter is exposed to water.
Installation
1. Make all connections to the meter’s terminal block before connecting the terminal block to the unit.
Keep hands away from the terminal block when applying power to the meter.
2. As the nal DC connection, insert a fuse into the in-line fuse holder on the wire to the positive (+) battery terminal.
Mounting Templates
Flat Mount
3.34" (84.8mm)
3.34" (84.8mm)
3.00" (76.2mm)
3.00" (76.2mm)
3.46" (87.9mm)
Surface Mount
Ø2.125"
(54mm)
3.40" (86.5mm)
2
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 at panel or 360 mounted if used in an
exposed location. For all mountings, the back of the unit is not waterproof and must be kept dry.
Flat Mount
M2
Head
Unit
Surface Mount
Flat
Mount
Bezel
Clamp
Mounting
Substrate
Mounting
Ring and Nut
360 Panel Mount PN 1525
STEP 1
Use 1/4"
Mounting
Screws
STEP 2
Snap header
and footer
into mounting
clips and post.
Snap the
mounting bezel
into place
with the flat
edge up.
360 Panel
Mount
Carrier
Panel
Frame
Header
Surface
Mount
Cover
NOTE: During
installation use cover
to align the bezel
and gasket
M2
Head
Unit
Surface
Mount
Gasket
Surface
Mount
Bezel
and Seal
Mounting
Ring and Nut
Mounting
Substrate
STEP 3
M2
Head
Unit
Footer
Header
Bezel
Panel
Frame
Mounting
Ring and Nut
Panel
BezelFooter
Frame
3
AC Functions (1836, 1837, 1838)
1836 AC Ammeter measures the current draw of up to two sources or legs.
1837 AC Voltmeter measures the voltages of up to two sources or legs.
1838 AC Multimeter measures the voltages and current draws of up to two sources or legs.
Connections
IMPORTANT! The Sensing Description section of this manual gives important details to the location of sensors in the AC and DC
electrical systems of the boat. Improper location and configuration of sensors can result in erroneous readings and possible damage to
components.
Pinout Tables
1836 Connector Pin Assignment Table
8 Pin Connector*
1 Required Connection
Required Connection
2
3
4
5
6
7
8
USB
*The 8 pin low voltage connector supports wire sizes from 16-26 AWG
Function
DC Negative
DC Positive
Relay DC Out to Load
Relay DC +
AC 1 Current Transformer –
AC 1 Current Transformer +
AC 2 Current Transformer –
AC 2 Current Transformer +
Micro USB Port
1837 Connector Pin Assignment Table
4 Pin Connector*
1 AC Voltage 1 - HOT
2
3
4
8 Pin Connector**
1
Required Connection
Required Connection
2
3
4
5
6
7
8
USB Micro USB Port
*The 4 pin high voltage connector supports wire sizes from 12-24 AWG
**The 8 pin low voltage connector supports wire sizes from 16-26 AWG
Function
AC Voltage 1 - NEUTRAL
AC Voltage 2 - NEUTRAL
AC Voltage 2 - HOT
Function
DC Negative
DC Positive
Relay DC Out to Load
Relay DC +
No Connection
No Connection
No Connection
No Connection
1838 Connector Pin Assignment Table
4 Pin Connector*
1 AC Voltage 1 - HOT
2
3
4
8 Pin Connector**
1
Required Connection
2
Required Connection
3
4
5
6
7
8
USB
*The 4 pin high voltage connector supports wire sizes from 12-24 AWG
**The 8 pin low voltage connector supports wire sizes from 16-26 AWG
Function
AC Voltage 1 - NEUTRAL
AC Voltage 2 - NEUTRAL
AC Voltage 2 - HOT
Function
DC Negative
DC Positive
Relay DC Out to Load
Relay DC +
AC 1 Current Transformer –
AC 1 Current Transformer +
AC 2 Current Transformer –
AC 2 Current Transformer +
Micro USB Port
Meter Power Supply Connections
All meters must have pins 1 (DC Neg.) and 2 (DC Pos.) connected. These pins are used to provide power to the meter. Connect pin 1 to ground and pin
2 to a 12V to 48V power source. Note on some DC meters pin 2 is also used to monitor additional voltages.
AC Connections (1836, 1837, 1838)
AC Current
In most cases, the AC Current Transformer should be located on the main AC line wire before any other devices.
The Current Transformer does not indicate polarity. The leads should be twisted to reduce the effects of interference from other electrical circuits.
AC Voltage
The AC supply HOT ( Line, or “Ungrounded Conductor”) connection should be protected with a fast acting fuse of 0.25A to 0.5A to protect against shorts.
4
Detailed Wiring
1836 AC Ammeter
To loads
To loads
Relay
7713, 12V
7717, 24V
AC
1 H
AC
2 H
12345678
Alarm
OROR
1070
From source
LED 12/24V
8033, Amber
8171, Red
8172, Green
Optional
Transformer
1838 AC Multimeter (North American 120V / European 230V)
OROR
From Supply
LED 12/24V
8033, Amber
8171, Red
8172, Green
Optional
Transformer
To loads
1 H
AC
AC
2 N
AC
1 N
AC
2 H
Relay
7713, 12V
7717, 24V
1 2 3 4
12345678
Alarm
1070
1837 AC Voltmeter
To loads
Relay
7713, 12V
7717, 24V
AC
1 H
AC
1 N
AC
2 N
AC
2 H
1 2 3 4
V
1 H V1 N V2 N V2 H
12345678
Alarm
1070
OROR
LED 12/24V
8033, Amber
8171, Red
8172, Green
From Source
5
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