SBS SBS-H2 Montageanleitung

SBS-H2 Users Manual Rev 1.4 January 6th 2013

N56 W16665 Ridgewood Drive

Menomonee Falls, WI 53051

SBS-H2

Hydrogen Gas Detector Kit

For battery charging rooms and other areas where hydrogen gas may be present

INSTALLATION, OPERATING &

MAINTENANCE INSTRUCTIONS

Protects Life, Property, and Profits

1-800-554-2243

www.sbsbattery.com ■TEST@sbsbattery.com

Compliant with NFPA 70E ® and IEEE recommendations

Hydrogen sensor is UL Class 1 Division 2

Pre-March 2016 Design - Click to be redirected to newer SBS-H2 design

SBS-H2 Users Manual Rev 1.4 January 6th 2013

Table of Contents:

Description Page Section

Overview 3 1.0

Benefits 3 2.0

How It Works 3 3.0

Specifications 4 4.0

Sensor 4 5.0

Mounting Location 5 6.0

Installation 6 7.0

Operation 10 8.0

Electrical Testing 10 9.0

Calibration 10 10.0

LED Trouble Shooting Chart 11 11.0

Part Numbers & Options:

Part No. Description

SBS-H2 Hydrogen Gas Detector (Includes: Main Unit, (1) sensor & (1) 25ft cable)

H2-JB Junction Box, 4 11/16” X 4 11/16” Metal, with Knockouts

H2-SENSOR Additional/Replacement Hydrogen Gas Sensor with 25ft Cable

H2-100FT-CABLE Custom 100 Ft Cable and mA Converter (no sensor)

H2-CALKIT Field Calibration Kit for SBS-H2

E190399 110vac 3 Prong AC Cord, 10 Ft, 18AWG

Warnings:

This detector is added protection, not a substitute, for prudent safety measures where

hydrogen gas is present. For large or highly sensitive areas, you may have to use two or

more detectors with 1 or 2 sensors each for increased detection.

The hydrogen sensor does not provide protection from fires or hydrogen explosions.

The relay contacts are intended to be connected to a safety system, enabling audible

alarms, system shutdown, ventilation, or other measures to ensure safe handling and

use of hydrogen gas.

Ensure that your installation complies completely with all relevant local, State, Federal,

and OSHA safety and health regulations

If sensor responds, there is a risk of combustion or explosion. To avoid injury leave area

immediately.

The hydrogen sensor is calibrated for operation in air. Tampering with the sensor or

operation in other gas environments can lead to inaccurate readings and possible

permanent damage if operating in a reducing atmosphere or 100% hydrogen. The

hydrogen sensor is silicone resistant but uncured silicone compounds or extended

exposure to silicone off gassing, or high concentrations of refrigerant gasses related to a

leak, can give inaccurate readings in the sensor.

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

1.0 Overview

Hydrogen gas detectors act as monitors that provide alarms as well as control functions

such as controlling exhaust fans, remote alarm and signaling, building management

interfacing and more for the protection of your facility.

Batteries on charge emit hydrogen gas after reaching 80% of the recharge point.

Examples of typical hydrogen emissions per lead-acid battery are:

Battery Size

Hydrogen Gas

12 Volt / 500 Amp-Hour

3.5 Cubic Feet/hr.

24 Volt / 720 Amp-Hour

10.1 Cubic Feet/hr.

36 Volt / 935 Amp-Hour

19.8 Cubic Feet/hr.

48 Volt / 850 Amp-Hour

23.9 Cubic Feet/hr.

Concentrations of 4.1% to 75% H2 mixed with air can be explosive. Sparks or hot surfaces

can ignite them. A hydrogen gas detector in your battery room will provide a warning and

facilitate dissipation of hydrogen concentrations before they reach the lower explosive limit

(LEL) of 4.1%.

2.0 Benefits

In addition to protecting your employees and your property, the detector may also

reduce the following costs:

Electricity - Heating - Air Conditioning

Instead of continuously running an exhaust fan to prevent hydrogen gas accumulation, use the

detector to activate the fan only if the concentration reaches 1%.

Insurance

Installation of a detector in areas where batteries are charged may result in a premium

reduction.

3.0 How it Works

Should the concentration of hydrogen gas in the air surrounding the sensor reach 1% by

volume, the "1% Warning" yellow LED will light and the 1% internal relay will energize. Should

the hydrogen gas concentration reach 2% by volume, the "2% Alarm" red LED will flash and an

alarm will sound.

Either relay can be used to activate a remote exhaust fan and/or alarm.

Automatic operation, continuous monitoring, high sensitivity & stability,and solid state reliability.

The unit is also intrinsically safe using 120/240 VAC 50/60 Hz or 12-48 VDC operating voltages,

low in cost and easy and versatile to install.

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

4.0 Specifications

Dimensions:

4.75"L x 5.25"W x 1.4"D (display only)

Wall Mounting:

Two 3/16" screws

Junction Box Mounting:

Requires 4 11/16” x 4 11/16” 2-gang junction box (SBS Part# H2-JB)

Power Requirements:

120/220 VAC, 50 / 60 Hz or

12VDC Isolated or 14 to 48 VDC *** An earth ground must be supplied to the

GND terminal when using the 12VDC and Isolated (Gnd) inputs for 12 Volt

supply to the unit.

Relays:

1% Warning Relay, 1 Normally Open & 1 Normally Closed contact

2% Alarm Relay, 1 Normally Open and 1 Normally Closed contact

5.0 Sensor

The sensor consists of a ceramic sensing element whose electrical conductivity increases when

hydrogen is adsorbed on its surface. Conductivity of the sensor is proportional to the gas

concentration which is continuously monitored by an electronic circuit. The sensor only monitors

pure hydrogen gas (H2) and will not alarm due to Hydrogen Sulfide (H2S) –which has an odor

at very low concentrations.

Hydrogen Sensor 25 Ft Cable extension

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

6.0 Mounting Location

Hydrogen is colorless and odorless; the lightest of all gases and thus rises. The hydrogen

sensor, therefore, should be installed at the highest, draft-free location in the battery

compartment, cabinet, or room where hydrogen gas would accumulate.

The Alarm Box can be mounted at eye level or wherever is convenient for the user.

The size of the area one sensor will protect depends upon the battery compartment or room.

The detector measures hydrogen gas concentration in the air immediately surrounding the

sensor. Hydrogen gas may accumulate in several areas of the battery compartment or room

therefore; individual detectors should be installed in each of these areas.

Mounting and Power Options:

Alarm Wiring Input Power

Wall Mountable

Integrated back mounting plate allows

user to easily mount directly to any wall

using qty.2 3/16” screws (not included).

Wiring

Power and Alarm Wires can be ran

through the sides of the unit

Junction Box Mountable

Mounts to a standard, 4 11/16“ x 4 11/16“

2-gang junction box (SBS Part# H2-JB).

Hardwire

Run AC or DC power and alarm wires through

back of the unit, into the gang box and out

through conduit.

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

7.0 Installation

Hydrogen gas has only 7% of the density of air, and thus rises. Your hydrogen gas detector

should be installed at the highest, draft-free location in the battery room, cabinet, or

compartment where hydrogen gas would accumulate.

Carefully remove the cover by pulling it off the detector. Attach the detector to the wall, ceiling,

or optional junction box using the mounting holes at the top and bottom of the detector mounting

plate.

For hard wiring using conduit, the detector box will fit onto the optional junction box.

The detector has terminal blocks for connection to a single-phase 120 VAC 50/60 Hz power

source, OR a +12 VDC Regulated Power Source or a +14-48 VDC power source. It also has

two internal alarm relays. A 1% warning relay that is activated at 1% concentration of hydrogen

gas and a 2% alarm relay that is energized at 2% concentration of hydrogen gas. The relays

can be used to switch on a remote exhaust fan and/or to turn on an alarm.

For 120 VAC power, use 18 gage stranded wire minimum (Belden 19348, equivalent or better).

For relay wires, use stranded wire (Belden 8473, equivalent or better). Maximum wire size for

connector terminations is 14 AWG stranded copper wire.

Power Requirements: Current (A) Power (W)

Voltage

1 Sensor

2 Sensors

1 Sensor

2 Sensors

VDC

0.154

0.302

1.848

3.624

VDC

0.090

0.167

2.160

4.008

VDC

0.052

0.090

2.496

4.320

VAC

120

0.035

0.062

4.200

7.440

The detector's relay dry contacts are rated at 10A/250VAC, sufficient for most 1/3 HP exhaust

fans. For higher current requirements, add an external relay.

Locate the Sensor installation point within 25 feet of the detector and mount the sensor. Run

the supplied cable from the sensor to the detector and connect to the Sensor 1 input labeled on

the cover.

AC Cord -not included

(SBS Part# E190399)

Unit shown with 3-prong grounded AC

Cord (18+ AWG)

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

For installation of a second sensor

One additional sensor may be added to each detector. Multiple detectors can be installed to

meet the space coverage requirements of your particular installation.

Locate the 2nd sensor installation point within 25 feet of the detector and mount the sensor.

Connect the cable from the second sensor to the Sensor 2 input labeled on the cover. On the

detector printed circuit board, remove the jumper on P9 to enable the second sensor input.

Either sensor is capable of triggering a warning or alarm condition.

Switching from Voltage to Current Output- Required when using cable longer than 100 ft.

When using cable exceeding the 100FT sensor cable (SBS Part# H2-100FT-CABLE), the

Sensor jumper must be moved on the sensor input from the off condition to the on condition, so

it covers both pins.

1. Removing the front snap on cover will reveal the inner electronics of the alarm box.

2. Locate the signal output select jumper(s) (P5 for Sensor 1 and P6 for Sensor 2).

3. Install the jumper across the two pins to enable the current output mode (see photos)

Wiring Diagram:

1. The detector has 2 internal relays. One relay energizes when the sensor detects a 1%

concentration of hydrogen gas in the air surrounding it. The second relay contact energizes at a

2% concentration.

The detector's internal relays are rated: 10 amps at 250 volts ac; 10 amps at 30 volts dc; 1/3

horsepower at 125 volts ac; 1/2 horsepower at 250 volts ac.

Sensor Disabled

(40mA Signal Output)

Sensor Enabled

(Voltage Signal Output)

Note: (Alarm will emit a

“chirp” noise if sensors are

not connected)

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

If the load you have is higher than these relay ratings, add an external relay (shaded item in the

sketch above).

Alarm System Electronics:

Please refer to the photos below showing proper power and relay connection points in the

detector. It is advisable to use a twisted pair of 14 gage wires for the relay contacts to help

reduce any interference within the battery room that may cause false alarms.

A. Multiple Sensor Jumper - Select between single or multiple sensor set-up.

default jumper settings: single sensor (Jumper on P9 Only)

Place a jumper on P8 to disable SENSOR 1 Place a jumper on P9 to disable SENSOR 2

B. Signal Output Select Jumper (Volts/Amps) (P5 for Sensor #1) (P6 for Sensor #2)

Select between voltage or milliamp output. default setting: voltage output

Enabled amp output by installing the jumper on these pins (lift jumper and slide over to short pins)

C. Normally Open (NO) Relay for Warning Condition (1% H2)

D. Normally Open (NO) Relay for Alarm Condition (2% H2)

E. Test System Push Button

F. Calibration Potentiometers (DO NOT ADJUST –WILL VOID CALIBRATION)

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

Terminal Connection Diagram:

Earth GND Negative +12 VDC OR +14-48 VDC

Using the Mechanical Relays:

1. Remove the front cover of the detector by pulling straight off the body. This will reveal

the inner electronics of the alarm box.

2. Locate items C and D, and determine which condition you would like to use the relay to

be related to. Use Relay C for the warning condition (1% H2) and relay D for the alarm

condition (2% H2).

3. Restore the front covering of the alarm box and re-secure the two removed screws.

8.0 Operation

Keep the detector on at all times. A Green LED indicates that the detector is powered on.

N/C

N/O

COM

N/C

N/O

COM

EARTH(GND)

GND (ISO)

+ 12 VDC

+14-48VDC

120VAC LINE

EARTH (GND)

NEUTRAL

1% Warning Contacts

2% Alarm Contacts

AC Power Supply Terminals

DC Power Supply Terminals

Pre-March 2016 Version

SBS-H2 Users Manual Rev 1.4 January 6th 2013

When power is first turned on, a warm up period of 4 hours will elapse before the

detector will start to function. This delay is to prevent false activation of the internal

relays and alarm. The GREEN LED will flash during the warm up period and then turn

solid green once the warm up is complete.

If the concentration of hydrogen gas in the air surrounding the sensor reaches 1% by volume,

the yellow LED will light and the 1% internal relay will initiate(which can be used to activate a

remote fan and/or alarm).

Should the concentration reach 2%, the red LED will flash, the internal warning alarm will sound,

and the 2% internal relay will energize. The 1% relay will remain energized & the yellow LED will

remain on. When the concentration decreases below 2%, the red LED will turn off, the internal

alarm will stop, and the 2% relay will de-energize. When the concentration falls below 1%, the

1% relay will de-energize and the Yellow LED will turn off.

9.0 Electrical Testing (after the input power is on for 4 hours)

A "push-to-test" button is located on the front of the unit. Push and hold this button for

approximately 10 seconds to test the unit's electronic circuitry.

The caution and warning LEDs will light in sequence; the relays will activate whatever is

connected to them and the internal warning alarm will sound.

Note: The "push-to-test" button does NOT test the sensor itself.

10.0 Calibration

The Sensor and display have been calibrated at the factory for hydrogen gas and should not

need adjustment at the time of installation.

The SBS-H2 Display can be *calibrated in the field using a calibration kit (SBS Part# H2-

CALKIT) or the sensor and display can be sent to SBS for calibration.

SBS Part# H2-CALKIT calibration kit** shown above

*Sensor can accept up to 3 calibrations / **Sensor not included with calibration kit

Pre-March 2016 Version

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