Macurco HS1-FCK, TX-6-HS User Manual
Macurco™ Hydrogen Sulfide Detector, Controller and Transducer TX-6-HS
User Instructions
Important: Keep these User Instructions for reference
TABLE OF CONTENTS
GENERAL SAFETY INFORMATION 3
List of Warnings and Cautions 3
USE INSTRUCTIONS AND LIMITATIONS 4
Use For 4
Do Not Use For 4
General Description 4
INSTALLATION AND OPERATING INSTRUCTIONS 5
MAINTENANCE 14
Sensor Replacement 15
Field Calibration Procedure 20
MACURCO GAS DETECTION PRODUCTS WARRANTY 22
Intended Use 3
Features 5
Specifications 5
Location 6
Installation 6
Garage diagram 7
DVP-120 Control Panel diagram 9
Power Up 10
Operation 10
Default – Factory Settings 10
On Board Diagnostics 13
Sensor Poisons 14
End-of-Warranty Signal 14
Sensor Life Reset 15
Cleaning 16
Testing 16
4-20 mA Output diagram 7
Multiple Device diagram 8
Alarm Control Panel diagram 8
Alternate Alarm Panel 10
Display setting 11
Buzzer setting 11
Alarm Relay setting 12
Alarm Relay Configuration 12
Fan Relay setting 12
Fan Relay Delay setting 13
Fan Minimum Runtime setting 13
Fan Relay Latching setting 13
4-20mA Output setting 13
Operation Test 16
Hydrogen Sulfide Test 18
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GENERAL SAFETY INFORMATION
Intended Use
The Macurco TX-6-HS is a low voltage, dual relay Hydrogen Sulfide (H2S) detector, controller and transducer. The TX-6-HS has
selectable 4-20 mA output, buzzer and digital display options. It is an electronic detection system used to measure the concentration of
H2S and provide feedback and automatic exhaust fan control to help reduce H2S concentrations in refineries, pulp and paper mills,
waste disposal or other commercial applications. The TX-6-HS is a low level meter capable of displaying from 0-50 ppm of Hydrogen
Sulfide. The TX-6-HS is factory calibrated and 100% tested for proper operation, but can also be calibrated in the field.
List of Warnings and Cautions within these User Instructions
! WARNING
Each person using this equipment must read and understand the information in these User Instructions before use. Use of this
equipment by untrained or unqualified persons, or use that is not in accordance with these User Instructions, may adversely affect
product performance and result in sickness or death.
Use only for monitoring the gas which the sensor and instrument are designed to monitor. Failure to do so may result in exposures
to gases not detectable and cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical
Service at 1-877-367-7891.
This equipment may not function effectively below 0F or above 125F (-18C or above 52C). Using the detector outside of this
temperature range may adversely affect product performance and result in sickness or death.
This detector helps monitor for the presence and concentration level of a certain specified airborne gas. Misuse may produce an
inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure
and cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical Service at 1-877-367-7891.
High voltage relay terminals (120/240 VAC) are located within this detector, presenting a hazard to service technicians. Only
qualified technicians should open the detector case and service the internal circuits. Ensure power is removed from the detector
relays prior to servicing the unit. Failure to do so may result in sickness or death.
Do not disassemble unit or attempt to repair or modify any component of this instrument. This instrument contains no user
serviceable parts, and substitution of components may impair product performance and result in sickness or death.
Using a certified gas with a concentration other than the one listed for this detector when conducting a calibration or calibration
verification test (bump test) will produce inaccurate readings. This means that higher levels of the gas being monitored may be
present and could result in overexposure and cause sickness or death. For proper use, see supervisor or User Instructions, or
call Technical Service at 1-877-367-7891
The following steps must be performed when conducting a calibration or calibration verification test (bump test) to ensure proper
performance of the monitor. Failure to do so may adversely affect product performance and result in sickness or death.
When performing a calibration or calibration verification test (bump test) only use certified calibration gas at the
required concentration level. Do not calibrate with expired calibration gas.
If the instrument cannot be calibrated, do not use until the reason can be determined and corrected.
Do not cover or obstruct display or visual alarm
Ensure sensor inlets are unobstructed and is free of debris
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USE INSTRUCTIONS AND LIMITATIONS
! WARNING
Each person using this equipment must read and understand the information in these User Instructions before use. Use of this
equipment by untrained or unqualified persons, or use that is not in accordance with these User Instructions, may adversely affect
product performance and result in sickness or death.
Use For
The TX-6-HS provides Hydrogen Sulfide detection and automatic exhaust fan control for refineries, pulp and paper mills, waste disposal
or other commercial applications. Hydrogen Sulfide or H2S, also called sewer gas, is a colorless gas with a strong odor of rotten eggs.
Note: Sense of smell becomes rapidly fatigued & can NOT be relied upon to warn of the continuous presence of H2S. The TX-6-HS is
designed to meet the NIOSH and OSHA standards for Hydrogen Sulfide exposure limits. TX-6-HS can be used stand alone, with the
Macurco DVP-120 Detection and Ventilation Control Panel, other 12 VAC or 24 VDC fire/security panels or building automation
systems.
! WARNING
Use only for monitoring the gas which the sensor and instrument are designed to monitor. Failure to do so may result in exposures to
gases not detectable and cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical Service at 1877-367-7891.
Do Not Use For
The TX-6-HS is not intended for use in hazardous locations. Do not mount the TX-6-HS where the normal ambient temperature is
below 0°F or exceeds 125°F (below -18C or above 52C). The TX-6-HS mounts on a 4x4 electrical box supplied by the contractor. Do
not install the TX-6-HS inside another box unless it has good air flow through it.
! WARNING
This equipment may not function effectively below 0F or above 125F (-18C or above 52C). Using the detector outside of this
temperature range may adversely affect product performance and result in sickness or death.
General Description
The TX-6-HS is a low voltage, dual relay Hydrogen Sulfide (HS) detector and automatic ventilation controller. The TX-6-HS uses a
microcomputer controlled, electronic system to measure the concentration of Hydrogen Sulfide, actuate relays and provide a 4-20mA
output. The TX-6-HS has a field replaceable, electrochemical sensor (expected life of 2+ years) and optional gas test and calibration
kits. The TX-6-HS is a low level meter capable of displaying from 0-50ppm of Hydrogen Sulfide.
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Features
ETL Listed to UL 61010-1
Low level meter capable of displaying from 0-50 ppm Hydrogen Sulfide
The TX-6-HS meets NIOSH and OSHA standards for gas exposure
Selectable fan and alarm relay activation
5 A SPDT fan relay controls starters of exhaust fans
0.5 A N.O. or N.C. alarm relay connects to warning devices or control panels
4-20 mA Current Loop
TX-6-HS mounts on a standard 4x4 electrical box and becomes cover for the box
Supervised system: any internal detector problem will cause the fan & alarm relay to activate
Calibration kit is available. One screw allows access for calibration or gas test
Specifications
Power: 3 W (max) from 12 to 24 VAC or 12 to 32 VDC
Current @ 24 VDC: 75 mA in alarm (two relays), 50 mA (fan relay only) and 23 mA stand by
Shipping Weight: 1 pound (0.45 kg)
Size: 4 1/2 x 4 x 2 1/8 in. (11.4 X 10.2 X 5.4 cm)
Color: Dark gray
Connections: plugs/terminals
Mounting box: (not included) 4x4 electric
Fan relay: 5 A, 240 VAC, pilot duty, SPDT, latching or non-latching
Fan relay actuation: selectable at diS (disable), 1, 2, 3, 4, 5, 6, 7, 8 (default), 9, 10 , 11, 12, 13, 14, 15, 16, 17, 18, 19,
20 ppm
Fan Delay Settings of 0, 1, 3 (default), 5 and 10 minutes
Fan Minimum Run Time settings are 0 (default), 3, 5, 10 or 15 minutes
Fan relay latching or not latching (default) selectable
Alarm relay: 0.5A 120 V, 60 VA
Alarm relay actuation: selectable N.O. (default) or N.C.
Alarm relay settings: diS, 5, 10, 15, 20 (default), 25, 30, 35, 40, 45, 50 ppm H2S
Current Loop: 4-20 mA for 0-50ppm H2S
Buzzer: 85 dBA at 10cm settable to off (default) or on
Digital display: 3 digit LED selectable to off (default) or on.
Operating environ: 0°F to 125°F (-18C to 52C).10 to 90% RH
INSTALLATION AND OPERATING INSTRUCTIONS
The following instructions are intended to serve as a guideline for the use of the Macurco TX-6-HS Hydrogen Sulfide Detector. It is not
to be considered all-inclusive, nor is it intended to replace the policy and procedures for each facility. If you have any doubts about the
applicability of the equipment to your situation, consult an industrial hygienist or call Technical Service at 1-877-367-7891.
, selectable to off or on (default)
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! WARNING
This detector helps monitor for the presence and concentration level of a certain specified airborne gas. Misuse may produce an
inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure and
cause sickness or death. For proper use, see supervisor or User Instructions, or call Technical Service at 1-877-367-7891.
Location
A TX-6-HS is normally mounted low in the room on a wall or column one foot above the floor in a central area where air movement is
generally good. Use the same spacing as for smoke detectors, 30-foot centers, 900 square feet per detector (465 sq. meters). The
coverage depends on air movement within the room or facility. Extra detectors may be needed near any areas where people work or
where the air is stagnant. The TX-6-HS mounts on a 4x4 electrical box supplied by the contractor. Do not install the TX-6-HS inside
another box unless it has good air flow through it. Do NOT mount the TX-6-HS where the normal ambient temperature is below 0°F or
exceeds 125°F (below -18°C or above 52°C).
! WARNING
High voltage relay terminals (120/240 VAC) are located within this detector, presenting a hazard to service technicians. Only qualified
technicians should open the detector case and service the internal circuits. Ensure power is removed from the detector relays prior to
servicing the unit. Failure to do so may result in sickness or death.
Installation
1. The TX-6-HS mounts on a 4” square (or 4x4) electrical box supplied by the contractor. Do not mount the TX-6-HS inside
another box, unless it has good air flow through it.
2. Connect the TX-6-HS to Class 2 power supply only. It is suggested to use a separate transformer for powering the unit or units
because of possible interference’s from other devices on the same power supply.
3. Connect the TX-6-HS to the control cables with terminal plugs. When making connections, make sure the power is off.
4. There are two terminals for Power: 12 to 24 VAC or 12 to 32 VDC, with no polarity preference.
5. There are two terminals for the dry alarm relay contacts, again with no polarity preference. The alarm relay can switch up to 0.5
A 120 V, or 60 VA. The alarm relay is activated if gas reaches or exceeds the alarm settings. See OPERATION section of
these User Instructions for details on relay settings.
6. The alarm relay can be configured to normally open (default) (N.O.) or normally closed (N.C.) and will activate if the gas
concentration exceeds alarm set point. It will deactivate once the gas concentration drops below the alarm set point. Note that
the “disable” setting will cause the alarm relay not to engage at all.
7. The dry contact, SPDT fan relay has three terminals. The common (COM.), normally open (N.O.) and the normally closed
(N.C.) contact. The fan relay can switch up to 5.0 A up to 240 VAC. See OPERATION section of these User Instructions for
details on relay settings.
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8. The Fan Relay can be configured for latching or non-latching (default) when activated (when the gas concentration exceeds fan
relay set point).
9. The Fan Relay will engage if the fan setting Hydrogen Sulfide concentration is exceeded for longer than the Fan Relay Delay
time. Unless it is configured for latching, the fan relay will disengage once both of these conditions have been met:
Hydrogen Sulfide concentration has dropped below fan setting
Fan Relay Run time has been exceeded
Note that the “disable” fan setting will cause the fan relay to not engage. The fan relay will engage in trouble fault condition and
will disengage once trouble fault condition is cleared.
10. The Current Loop is 4 mA in clean air and 20 mA for 50 ppm Hydrogen Sulfide
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